3.0 Release

Patch

.github/CHANGELOG.md

@@ -0,0 +1,149 @@
+# Maintenance Changelog
+This file contains update logs for this project. The top may contain a `Unreleased` section, gathering update logs for a future update during development.
+
+## 3.0 - February 17th 2019
+### Changed
+* This plugin now also supports the platforms Sponge and Velocity!
+* Added tabcompletion for maintenance commands on all platforms
+* This plugin now uses a custom config system, which means comments won't vanish after saving them and the different configs have been unified
+* You can now also add and remove (offline) players to/from the maintenance whitelist by using their uuid (i.e. `/maintenance add <uuid>`)
+* The %TIMER% variable can now also be used in the playercount-, playercounthover- and kickmessages
+* To make life easier for people running on Bungee without an extra permission plugin: the `maintenance.admin` permission gives access to all subcommands
+* Made bug reports a little easier with the new `/maintenance dump` command
+* Added a config option to disable update checks (not recommended)
+* Moved `kickmessage` field from config to language file and added its default translations
+* Changed permissions nodes for the Bungee part (`from: to`):
+  * `maintenance.toggleserver`: `maintenance.singleserver.toggle`
+  * `maintenance.servertimer`: `maintenance.singleserver.timer`
+  * `maintenance.status`:  `maintenance.singleserver.status`
+* The command `/maintenance timer abort` has been renamed to `/maintenance aborttimer`
+* Added additional aliases: `/maintenance end` for `/maintenance endtimer`, `start` for `starttimer`, `abort` for `aborttimer`
+* On false command syntax usage, the reply will be the specific help message for that command, not the entire help window as it was before
+* Improved update checks and updater
+* Many many other runtime improvements and some major internal refactoring
+### Fixed
+* Fixed a startup issue with other plugins using the same MySQL library on Bungee (for example some versions of LuckPerms)
+* Fixed an error on Bungee when single servers are set to maintenance with no fallbackserver set
+* Fixed a rare problem with adding and removing players to/from the maintenance whitelist
+* Fixed an issue with starting server timers while also running a global maintenance timer
+* Fixed the `/maintenance status` not appearing in the help overview
+---
+## 2.5.2 - December 17th 2018
+### Changed
+* Added French `fr` (thanks to Zendrique) and Portuguese `pt` (thanks to JoaoPinto) translations!
+* Improvements to MySQL stuff on the Bungee part
+* If enabled, single servers (on the Bungee part) that are under maintenance are now saved into the given database as well!
+### Fixed
+* Fixed the maintenance value only loading on the first server ping, not on startup
+* Fixed an error while setting maintenance to single servers, when the executor is something other than a player
+* Fixed the maintenance-icon not loading on 1.13+ Spigot servers with ProtocolLib
+* Some other general improvements and a small message fix
+---
+## 2.5.1 - November 17th 2018
+### Fixed
+* Fixed an occasional file loading error on startup
+---
+## 2.5 - November 17th 2018
+### Changed
+* Added the possibility on BungeeCord to also enable maintenance on Spigot servers managed by the proxy
+  * `/maintenance <on/off> <servername>` will now set maintenance to a proxied Spigot server
+  * `/maintenance <starttimer/endtimer> <server> <minutes>` works analog to the normal timer commands
+  * `/maintenance status` shows proxied servers that have maintenance enabled
+  * new permissions are `maintenance.toggleserver`, `maintenance.servertimer` and `maintenance.status`
+* Added a multiple-language-support system! It's currently not that big tho, with the only language added being de/German
+  * If you like this plugin, know French or Spanish (or any other language that isn't yet supported by the plugin) and want to contribute a bit to it, translations of the default language.yml are greatly appreciated!
+  * Note: There will be a new 'language-en.yml' file created, so if you changed any messages before, you have to do it again in the new file
+* Made the help message a little fancier
+* Some API changes
+### Fixed
+* Fixed a bug with starttimers not being able to start properly
+---
+## 2.4 - September 17th 2018
+### Changed
+* Edit nearly every message to your hearts content with the now introduced language.yml file!
+* Added `/maintenance removemotd <index>` command to remove a motd via an ingame command (if you have multiple ones)
+* You can now include the `%TIMER%` variable into your maintenance motd - **If using the maintenance endtimer**, it will display the time left until maintenance will be disabled!
+  * Simply shows `-` if maintenance is on without any timer
+  * A nice integration could be `&cExpected to come back in: &6%TIMER%`
+* You can now choose to show the normal playercount during maintenance instead of a custom message by changing the `enable-playercountmessage` value in the config
+* You can also include the playercount in a custom playercountmessage by using the 2 variables `%ONLINE%` and `%MAX%`
+* If there's a new update available, the update notification will no longer be sent on every single login, but rather just on the first one after startup
+* Removing players from the maintenance whitelist now accepts uncapitalized names
+---
+## 2.3.1 - August 17th 2018
+### Changed
+* When a string in the config is missing, the plugin doesn't cancel the current process and throws an error anymore, but rather gives a soft warning in the console and returns a backup string
+* If MySQL is enabled, the plugin will only make a database request at least x seconds after the last request, whereas you can define the value in the config under `mysql.update-interval`
+  * Example: If a first player pings the server after startup, the value will be updated -> No update in the next x seconds even if a player pings -> After elapsed, as soon as the next player pings the server again
+  * Especially helpful as well as recommended for servers with many players
+* Another improvement for MySQL support: After enabling maintenance on one proxy, the other connected ones will then also kick all non permitted players and switch their ServerListPlus state!
+* The `/maintenance` helppage now only shows the commands the player actually has permission to execute
+---
+## 2.3 - July 17th 2018
+### Changed
+* Added the possibility to have multiple pingmessages, of which one will be randomly chosen on each ping when maintenance is enabled (you can also just keep it at one)!
+* Added permissions per subcommand
+  * `maintenance.command` required to use any of the commands
+  * `maintenance.toggle` to use /maintenance <on/off>
+  * `maintenance.reload` to use /maintenance reload
+  * `maintenance.update` to use /maintenance <update/forceupdate>
+  * `maintenance.timer` to use /maintenance <starttimer/endtimer> <minutes>
+  * `maintenance.whitelist.add` to use /maintenance add <player>
+  * `maintenance.whitelist.remove` to use /maintenance remove <player>
+  * `maintenance.whitelist.list` to use /maintenance whitelist
+  * `maintenance.setmotd` to use /maintenance setmotd <index> <1/2> <message>
+  * `maintenance.motd` to use /maintenance motd
+* Added `/maintenance motd` command to list all set maintenance pingmessages
+* `/maintenance whitelist` now also shows the UUID connected to each name
+### Fixed
+* Reworked/fixed the `/maintenance setmotd` command
+* Some typo and description fixes
+---
+## 2.2.2 - June 17th 2018
+### Changed
+* Changed the loading of the maintenance icon to be more predictable: It will load directly on startup and can now be reloaded by using the `/maintenance reload` command as well
+* Changed the reload message to read the proper reload changes
+* Removed an obsolete config comment
+* You can now hook into the plugin with the integrated API
+---
+## 2.2.1 - April 17th 2018
+### Changed
+* Added `/maintenance setmotd <1/2> <message>` command to edit the maintenance mode motd via a command
+* The Bungee version of the plugin will now automatically create a MySQL table if it is enabled, so you won't have to manually create one anymore
+### Fixed
+* Fixed the ServerListPlus motd only changing on using the command, but not on the server startup
+* Fixed an error with canceling the start-/endtimer in the Bungee version
+* Fixed an error with removing players from the whitelist in the Spigot version
+---
+## 2.2 - March 17th 2018
+### Changed
+* Great update for the Spigot version of the plugin as well as performance improvements and bugfixes in both versions
+* If you have ProtocolLib installed, you can set a custom server icon while maintenance is enabled, also the playercount-message and the playercount-hover-message are now available (as it has already been in the Bungee version)!
+* In the BungeeCord version of the plugin, the `/maintenance remove <player>` command now also works for offline players
+* Removed the plugin's prefix from some messages
+* General performance improvements
+### Fixed
+* The Spigot version should be much more compatible with other motd-changing plugins, such as SexyMotd
+* Fixed some other issues with the ProtocolLib integration
+* Minor textfix for the updatemessage in the Spigot version
+---
+## 2.1 - February 17th 2018
+### Changed
+* Massive code cleanup for both the Bungee and Spigot version of the plugin
+* Minor performance improvements
+### Fixed
+* Fixed start- and endtimers not being cancelled properly
+* Fixed an error for the update command in the Spigot version
+* Fixed an error regarding the ServerListPlus integration in the Spigot version
+---
+## 2.0 - February 15th 2018
+### Changed
+* You can now put the plugin not only inside your Bungee plugins folder, but also your Spigot/Bukkit one! Both will have the same feautures, but simply on their own platform. However, the Spigot version doesn't have MySQL support (as you would normally use BungeeCord for connecting multiple Spigot/Bukkit servers) and you can't use playercount-message, besides this, it has all its main features.
+  * On BungeeCord you can make your own custom messages for the playercount
+  * On Spigot you will see `N/0` (N being the actual count). If you also have ProtocolLib on your server, `0/0` will be displayed.
+* As many of you asked me: Maintenance now supports the plugin ServerListPlus
+* Performance improvements
+### Fixed
+* Fixed some permission and message bugs
+* Fixed problems with adding and removing players from the maintenance whitelist
+* Fixed update checks

.github/CONTRIBUTING.md

@@ -0,0 +1,5 @@
+# Contribution
+As I'm just a random guy making this plugin as a fun side-project, it will never be "perfect".
+Any improvement is welcome, as long as it fits with the general style of code, that should become apparent when looking at some of the other classes. :)
+
+Generally, the used formatting is the default formatting of IntelliJ (Ctrl+Alt+L).

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,14 @@
+---
+name: Bug report
+about: Report a bug to have it fixed
+
+---
+
+## Bug reproducibility
+**How does the problem occur/what are the steps to reproduce it?**
+
+## Error
+**Is there an error? Save it via https://pastebin.com/ and link paste the link.**
+
+## Server information
+**Type '/maintenance dump' and paste the given link here**

.gitignore

@@ -91,4 +91,5 @@ $RECYCLE.BIN/
 *.msi
 *.msm
 *.msp
-*.lnk
+*.lnk
+!MaintenanceAPI.jar

.travis.yml

@@ -0,0 +1,7 @@
+language: java
+jdk:
+  - oraclejdk8
+
+cache:
+  directories:
+    - '$HOME/.m2'

LICENSE.txt

@@ -1,4 +1,4 @@
-                    GNU GENERAL PUBLIC LICENSE
+GNU GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 
  Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
@@ -671,4 +671,4 @@ into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
-<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

Maintenance-API/src/main/java/eu/kennytv/maintenance/api/IMaintenance.java

@@ -1,36 +0,0 @@
-package eu.kennytv.maintenance.api;
-
-public interface IMaintenance {
-
-    /**
-     * Enabled/disabled maintenance mode.
-     * If enabled, all non-permitted players will be kicked.
-     * <p>
-     * If using the BungeeCord version and MySQL is enabled,
-     * it will also be written into the database.
-     * </p>
-     *
-     * @param maintenance true to enable, false to disable maintenance mode
-     */
-    void setMaintenance(boolean maintenance);
-
-    /**
-     * @return true if maintenance is enabled on the proxy
-     */
-    boolean isMaintenance();
-
-    /**
-     * @return true if a timer task is currently running
-     */
-    boolean isTaskRunning();
-
-    /**
-     * @return version of the plugin
-     */
-    String getVersion();
-
-    /**
-     * @return {@link ISettings} for more options
-     */
-    ISettings getSettings();
-}

Maintenance-API/src/main/java/eu/kennytv/maintenance/api/ISettings.java

@@ -1,54 +0,0 @@
-package eu.kennytv.maintenance.api;
-
-import java.util.Map;
-import java.util.UUID;
-
-public interface ISettings {
-
-    /**
-     * @return true if maintenance is enabled on the proxy
-     */
-    boolean isMaintenance();
-
-    /**
-     * @return true if "join-notification" is set to true in the config
-     */
-    boolean isJoinNotifications();
-
-    /**
-     * @return true if "custom-maintenance-icon" is set to true in the config
-     */
-    boolean hasCustomIcon();
-
-    /**
-     * The keyset of the map contains the uuids as a string, the values the names of the players.
-     *
-     * @return map of uuids of whitelisted players with their last seen names
-     */
-    Map<UUID, String> getWhitelistedPlayers();
-
-    /**
-     * Removes a player from the maintenance whitelist.
-     *
-     * @param uuid uuid of the player to remove
-     * @return true if removing the player was successful
-     */
-    boolean removeWhitelistedPlayer(UUID uuid);
-
-    /**
-     * Removes a player from the maintenance whitelist.
-     *
-     * @param name name of the player to remove in lowercase letters
-     * @return true if removing the player was successful
-     */
-    boolean removeWhitelistedPlayer(String name);
-
-    /**
-     * Adds a player to the maintenance whitelist.
-     *
-     * @param uuid uuid of the player to add
-     * @param name of the player to add
-     * @return true if adding the player was successful
-     */
-    boolean addWhitelistedPlayer(UUID uuid, String name);
-}

Maintenance-API/src/main/java/eu/kennytv/maintenance/api/MaintenanceBungeeAPI.java

@@ -1,29 +0,0 @@
-package eu.kennytv.maintenance.api;
-
-import net.md_5.bungee.api.ProxyServer;
-import net.md_5.bungee.api.plugin.Plugin;
-
-/**
- * Utility class to get the {@link IMaintenance} instance for the BungeeCord version of the plugin.
- * <p>
- * This class is NOT available for the Spigot version!
- * </p>
- *
- * @author KennyTV
- * @since 1.0
- */
-public final class MaintenanceBungeeAPI {
-
-    /**
-     * Returns API instance of IMaintenance.
-     *
-     * @return {@link IMaintenance} instance
-     */
-    public static IMaintenance getAPI() {
-        final Plugin maintenance = ProxyServer.getInstance().getPluginManager().getPlugin("MaintenanceBungee");
-        if (maintenance == null)
-            ProxyServer.getInstance().getLogger().warning("Could not get instance of MaintenanceBungee!");
-
-        return (IMaintenance) maintenance;
-    }
-}

Maintenance-API/src/main/java/eu/kennytv/maintenance/api/MaintenanceSpigotAPI.java

@@ -1,28 +0,0 @@
-package eu.kennytv.maintenance.api;
-
-import org.bukkit.Bukkit;
-
-/**
- * Utility class to get the {@link IMaintenance} instance for the Spigot/Bukkit version of the plugin.
- * <p>
- * This class is NOT available for the BungeeCord version!
- * </p>
- *
- * @author KennyTV
- * @since 1.0
- */
-public final class MaintenanceSpigotAPI {
-
-    /**
-     * Returns API instance of IMaintenance.
-     *
-     * @return {@link IMaintenance} instance
-     */
-    public static IMaintenance getAPI() {
-        final org.bukkit.plugin.Plugin maintenance = Bukkit.getPluginManager().getPlugin("MaintenanceSpigot");
-        if (maintenance == null)
-            Bukkit.getLogger().warning("Could not get instance of MaintenanceSpigot!");
-
-        return (IMaintenance) maintenance;
-    }
-}

Maintenance-Core/src/main/java/eu/kennytv/maintenance/core/MaintenanceModePlugin.java

@@ -1,114 +0,0 @@
-package eu.kennytv.maintenance.core;
-
-import eu.kennytv.maintenance.core.hook.ServerListPlusHook;
-
-import java.io.*;
-import java.net.HttpURLConnection;
-import java.net.MalformedURLException;
-import java.net.URL;
-import java.net.URLConnection;
-
-public abstract class MaintenanceModePlugin {
-    protected final String version;
-    protected int taskId;
-    protected ServerListPlusHook serverListPlusHook;
-    private final String prefix;
-    private String newestVersion;
-
-    protected MaintenanceModePlugin(final String prefix, final String version) {
-        this.prefix = prefix;
-        this.version = version;
-    }
-
-    public abstract void onDisable();
-
-    public abstract void setMaintenance(boolean maintenance);
-
-    public String getVersion() {
-        return version;
-    }
-
-    public boolean isTaskRunning() {
-        return taskId != 0;
-    }
-
-    public void setTaskId(final int taskId) {
-        this.taskId = taskId;
-    }
-
-    public String getNewestVersion() {
-        return newestVersion;
-    }
-
-    public abstract int schedule(Runnable runnable);
-
-    public abstract void async(Runnable runnable);
-
-    public abstract void cancelTask();
-
-    public abstract File getPluginFile();
-
-    public abstract void broadcast(String message);
-
-    public String getPrefix() {
-        return prefix;
-    }
-
-    public boolean updateAvailable() {
-        try {
-            final HttpURLConnection c = (HttpURLConnection) new URL("https://api.spigotmc.org/legacy/update.php?resource=40699").openConnection();
-            final String newVersion = new BufferedReader(new InputStreamReader(c.getInputStream())).readLine().replaceAll("[a-zA-Z ]", "");
-
-            final boolean available = !newVersion.equals(version);
-            if (available)
-                newestVersion = newVersion;
-
-            return available;
-        } catch (final Exception ignored) {
-            return false;
-        }
-    }
-
-    public boolean installUpdate() {
-        try {
-            URL url = null;
-            try {
-                url = new URL("https://github.com/KennyTV/Maintenance/releases/download/" + newestVersion + "/Maintenance.jar");
-            } catch (final MalformedURLException e) {
-                e.printStackTrace();
-            }
-
-            final URLConnection conn = url.openConnection();
-            final InputStream is = new BufferedInputStream(conn.getInputStream());
-            final OutputStream os = new BufferedOutputStream(new FileOutputStream("plugins/Maintenance.tmp"));
-            final byte[] chunk = new byte[1024];
-            int chunkSize;
-            while ((chunkSize = is.read(chunk)) != -1) {
-                os.write(chunk, 0, chunkSize);
-            }
-            os.close();
-            final File newfile = new File("plugins/Maintenance.tmp");
-            final long newlength = newfile.length();
-            if (newlength <= 10000) {
-                newfile.delete();
-                return false;
-            } else {
-                final FileInputStream is2 = new FileInputStream(new File("plugins/Maintenance.tmp"));
-                final OutputStream os2 = new BufferedOutputStream(new FileOutputStream(getPluginFile()));
-                final byte[] chunk2 = new byte[1024];
-                int chunkSize2;
-                while ((chunkSize2 = is2.read(chunk2)) != -1)
-                    os2.write(chunk2, 0, chunkSize2);
-                is2.close();
-                os2.close();
-
-                final File tmp = new File("plugins/Maintenance.tmp");
-                tmp.delete();
-                return true;
-            }
-        } catch (final IOException e) {
-            e.printStackTrace();
-            return false;
-        }
-    }
-}

Maintenance-Core/src/main/java/eu/kennytv/maintenance/core/Settings.java

@@ -1,156 +0,0 @@
-package eu.kennytv.maintenance.core;
-
-import com.google.common.collect.Maps;
-import com.google.common.collect.Sets;
-
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-import java.util.UUID;
-
-public abstract class Settings {
-    protected final Map<UUID, String> whitelistedPlayers = Maps.newHashMap();
-    protected boolean maintenance;
-    private Set<Integer> broadcastIntervalls;
-    private String timerBroadcastMessage;
-    private String endtimerBroadcastMessage;
-    private String pingMessage;
-    private String kickMessage;
-    private String joinNotification;
-    private String noPermMessage;
-    private String maintenanceActivated;
-    private String maintenanceDeactivated;
-    private String playerCountMessage;
-    private String playerCountHoverMessage;
-    private boolean joinNotifications;
-    private boolean customMaintenanceIcon;
-
-    protected void loadSettings() {
-        timerBroadcastMessage = getConfigString("starttimer-broadcast-mesage");
-        endtimerBroadcastMessage = getConfigString("endtimer-broadcast-mesage");
-        pingMessage = getConfigString("pingmessage");
-        kickMessage = getConfigString("kickmessage");
-        joinNotification = getConfigString("join-notification");
-        noPermMessage = getConfigString("no-permission");
-        maintenanceActivated = getConfigString("maintenance-activated");
-        maintenanceDeactivated = getConfigString("maintenance-deactivated");
-        maintenance = getConfigBoolean("enable-maintenance-mode");
-        joinNotifications = getConfigBoolean("send-join-notification");
-        customMaintenanceIcon = getConfigBoolean("custom-maintenance-icon");
-        broadcastIntervalls = Sets.newHashSet(getBroadcastIntervallList());
-        playerCountMessage = getConfigString("playercountmessage");
-        playerCountHoverMessage = getConfigString("playercounthovermessage");
-
-        loadExtraSettings();
-    }
-
-    public abstract void saveWhitelistedPlayers();
-
-    public abstract boolean createFiles();
-
-    public abstract String getConfigString(String path);
-
-    public abstract boolean getConfigBoolean(String path);
-
-    public abstract List<Integer> getBroadcastIntervallList();
-
-    public abstract void loadExtraSettings();
-
-    public abstract void setWhitelist(String uuid, String s);
-
-    public abstract void saveConfig();
-
-    public abstract void reloadConfigs();
-
-    public abstract void setConfigBoolean(String path, boolean boo);
-
-    public String getTimerBroadcastMessage() {
-        return timerBroadcastMessage;
-    }
-
-    public String getEndtimerBroadcastMessage() {
-        return endtimerBroadcastMessage;
-    }
-
-    public String getPingMessage() {
-        return pingMessage;
-    }
-
-    public String getKickMessage() {
-        return kickMessage;
-    }
-
-    public String getJoinNotification() {
-        return joinNotification;
-    }
-
-    public String getNoPermMessage() {
-        return noPermMessage;
-    }
-
-    public String getMaintenanceActivated() {
-        return maintenanceActivated;
-    }
-
-    public String getMaintenanceDeactivated() {
-        return maintenanceDeactivated;
-    }
-
-    public String getPlayerCountMessage() {
-        return playerCountMessage;
-    }
-
-    public String getPlayerCountHoverMessage() {
-        return playerCountHoverMessage;
-    }
-
-    public void setMaintenance(final boolean maintenance) {
-        this.maintenance = maintenance;
-    }
-
-    public boolean isMaintenance() {
-        return maintenance;
-    }
-
-    public boolean isJoinNotifications() {
-        return joinNotifications;
-    }
-
-    public boolean hasCustomIcon() {
-        return customMaintenanceIcon;
-    }
-
-    public Set<Integer> getBroadcastIntervalls() {
-        return broadcastIntervalls;
-    }
-
-    public Map<UUID, String> getWhitelistedPlayers() {
-        return whitelistedPlayers;
-    }
-
-    public boolean removeWhitelistedPlayer(final UUID uuid) {
-        if (!whitelistedPlayers.containsKey(uuid)) return false;
-        whitelistedPlayers.remove(uuid);
-        setWhitelist(uuid.toString(), null);
-        saveWhitelistedPlayers();
-        return true;
-    }
-
-    @Deprecated
-    public boolean removeWhitelistedPlayer(final String name) {
-        if (!whitelistedPlayers.containsValue(name)) return false;
-        final UUID uuid = whitelistedPlayers.entrySet().stream().filter(entry -> entry.getValue().equals(name)).findFirst().get().getKey();
-        whitelistedPlayers.remove(uuid);
-        setWhitelist(uuid.toString(), null);
-        saveWhitelistedPlayers();
-        return true;
-    }
-
-    public boolean addWhitelistedPlayer(final UUID uuid, final String name) {
-        final boolean contains = !whitelistedPlayers.containsKey(uuid);
-        whitelistedPlayers.put(uuid, name);
-        setWhitelist(uuid.toString(), name);
-        saveWhitelistedPlayers();
-        return contains;
-    }
-}

Maintenance-Core/src/main/java/eu/kennytv/maintenance/core/hook/ServerListPlusHook.java

@@ -1,15 +0,0 @@
-package eu.kennytv.maintenance.core.hook;
-
-import net.minecrell.serverlistplus.core.ServerListPlusCore;
-
-public final class ServerListPlusHook {
-    private final ServerListPlusCore serverListPlusCore;
-
-    public ServerListPlusHook(final ServerListPlusCore serverListPlusCore) {
-        this.serverListPlusCore = serverListPlusCore;
-    }
-
-    public void setEnabled(final boolean enable) {
-        serverListPlusCore.getProfiles().setEnabled(enable);
-    }
-}

Maintenance-Core/src/main/java/eu/kennytv/maintenance/core/runnable/MaintenanceRunnable.java

@@ -1,34 +0,0 @@
-package eu.kennytv.maintenance.core.runnable;
-
-import eu.kennytv.maintenance.core.MaintenanceModePlugin;
-import eu.kennytv.maintenance.core.Settings;
-
-public final class MaintenanceRunnable implements Runnable {
-    private final MaintenanceModePlugin plugin;
-    private final Settings settings;
-    private final boolean enable;
-    private int minutes;
-
-    public MaintenanceRunnable(final MaintenanceModePlugin plugin, final Settings settings, final int minutes, final boolean enable) {
-        this.plugin = plugin;
-        this.settings = settings;
-        this.minutes = minutes;
-        this.enable = enable;
-    }
-
-    @Override
-    public void run() {
-        if (minutes <= 0) {
-            plugin.setMaintenance(enable);
-
-            plugin.cancelTask();
-        } else if (settings.getBroadcastIntervalls().contains(minutes)) {
-            if (enable)
-                plugin.broadcast(settings.getTimerBroadcastMessage().replaceAll("%MINUTES%", String.valueOf(minutes)));
-            else
-                plugin.broadcast(settings.getEndtimerBroadcastMessage().replaceAll("%MINUTES%", String.valueOf(minutes)));
-        }
-
-        minutes--;
-    }
-}

Maintenance-Core/src/main/java/eu/kennytv/maintenance/core/util/MessageUtil.java

@@ -1,13 +0,0 @@
-package eu.kennytv.maintenance.core.util;
-
-public final class MessageUtil {
-
-    public static boolean isNumeric(final String string) {
-        try {
-            Integer.parseInt(string);
-        } catch (final NumberFormatException nfe) {
-            return false;
-        }
-        return true;
-    }
-}

Maintenance-Core/src/main/resources/WhitelistedPlayers.yml

@@ -1 +0,0 @@
-a8179ff3-c201-4a75-bdaa-9d14aca6f83f: KennyTV

MaintenanceBungee/src/main/java/eu/kennytv/maintenance/bungee/MaintenanceBungeeBase.java

@@ -1,27 +0,0 @@
-package eu.kennytv.maintenance.bungee;
-
-import net.md_5.bungee.api.plugin.Plugin;
-
-import java.io.File;
-
-/**
- * @author KennyTV
- * @since 2.1
- */
-public final class MaintenanceBungeeBase extends Plugin {
-    private MaintenanceBungeePlugin plugin;
-
-    @Override
-    public void onEnable() {
-        plugin = new MaintenanceBungeePlugin(this);
-    }
-
-    @Override
-    public void onDisable() {
-        plugin.onDisable();
-    }
-
-    File getPluginFile() {
-        return getFile();
-    }
-}

MaintenanceBungee/src/main/java/eu/kennytv/maintenance/bungee/MaintenanceBungeePlugin.java

@@ -1,127 +0,0 @@
-package eu.kennytv.maintenance.bungee;
-
-import eu.kennytv.maintenance.api.IMaintenance;
-import eu.kennytv.maintenance.api.ISettings;
-import eu.kennytv.maintenance.api.MaintenanceBungeeAPI;
-import eu.kennytv.maintenance.bungee.command.MaintenanceBungeeCommand;
-import eu.kennytv.maintenance.bungee.listener.PostLoginListener;
-import eu.kennytv.maintenance.bungee.listener.ProxyPingListener;
-import eu.kennytv.maintenance.bungee.metrics.MetricsLite;
-import eu.kennytv.maintenance.core.MaintenanceModePlugin;
-import eu.kennytv.maintenance.core.hook.ServerListPlusHook;
-import net.md_5.bungee.api.ProxyServer;
-import net.md_5.bungee.api.plugin.Plugin;
-import net.md_5.bungee.api.plugin.PluginManager;
-import net.minecrell.serverlistplus.core.plugin.ServerListPlusPlugin;
-
-import java.io.File;
-import java.util.concurrent.TimeUnit;
-
-/**
- * @author KennyTV
- * @since 1.0
- */
-public final class MaintenanceBungeePlugin extends MaintenanceModePlugin implements IMaintenance {
-    private final MaintenanceBungeeBase plugin;
-    private final SettingsBungee settings;
-
-    MaintenanceBungeePlugin(final MaintenanceBungeeBase plugin) {
-        super("§8[§eMaintenanceBungee§8] ", plugin.getDescription().getVersion());
-
-        this.plugin = plugin;
-        plugin.getLogger().info("Plugin by KennyTV");
-
-        settings = new SettingsBungee(plugin);
-
-        final PluginManager pm = getProxy().getPluginManager();
-        pm.registerListener(plugin, new PostLoginListener(this, settings));
-        pm.registerListener(plugin, new ProxyPingListener(plugin, settings));
-        pm.registerCommand(plugin, new MaintenanceBungeeCommand(this, settings));
-
-        new MetricsLite(plugin);
-
-        // ServerListPlus integration
-        final Plugin serverListPlus = pm.getPlugin("ServerListPlus");
-        if (serverListPlus != null) {
-            serverListPlusHook = new ServerListPlusHook(((ServerListPlusPlugin) serverListPlus).getCore());
-            plugin.getLogger().info("Enabled ServerListPlus integration!");
-        }
-    }
-
-    @Override
-    public void onDisable() {
-        if (settings.getMySQL() != null)
-            settings.getMySQL().close();
-    }
-
-    @Override
-    public void setMaintenance(final boolean maintenance) {
-        if (settings.getMySQL() != null) {
-            settings.setMaintenanceToSQL(maintenance);
-        } else {
-            settings.setMaintenance(maintenance);
-            settings.setConfigBoolean("enable-maintenance-mode", maintenance);
-            settings.saveConfig();
-            settings.reloadConfigs();
-        }
-
-        if (serverListPlusHook != null)
-            serverListPlusHook.setEnabled(!maintenance);
-
-        if (isTaskRunning())
-            cancelTask();
-
-        if (maintenance) {
-            getProxy().getPlayers().stream()
-                    .filter(p -> !p.hasPermission("maintenance.bypass") && !settings.getWhitelistedPlayers().containsKey(p.getUniqueId()))
-                    .forEach(p -> p.disconnect(settings.getKickMessage().replace("%NEWLINE%", "\n")));
-            getProxy().broadcast(settings.getMaintenanceActivated());
-        } else
-            getProxy().broadcast(settings.getMaintenanceDeactivated());
-    }
-
-    @Override
-    public boolean isMaintenance() {
-        return settings.isMaintenance();
-    }
-
-    @Override
-    public int schedule(final Runnable runnable) {
-        return getProxy().getScheduler().schedule(plugin, runnable, 0, 1, TimeUnit.MINUTES).getId();
-    }
-
-    @Override
-    public void async(final Runnable runnable) {
-        getProxy().getScheduler().runAsync(plugin, runnable);
-    }
-
-    @Override
-    public void cancelTask() {
-        getProxy().getScheduler().cancel(taskId);
-        setTaskId(0);
-    }
-
-    @Override
-    public ISettings getSettings() {
-        return settings;
-    }
-
-    @Override
-    public File getPluginFile() {
-        return plugin.getPluginFile();
-    }
-
-    @Override
-    public void broadcast(final String message) {
-        getProxy().broadcast(message);
-    }
-
-    @Deprecated
-    public static IMaintenance getAPI() {
-        return MaintenanceBungeeAPI.getAPI();
-    }
-
-    public ProxyServer getProxy() {
-        return plugin.getProxy();
-    }
-}

MaintenanceBungee/src/main/java/eu/kennytv/maintenance/bungee/SettingsBungee.java

@@ -1,173 +0,0 @@
-package eu.kennytv.maintenance.bungee;
-
-import eu.kennytv.maintenance.api.ISettings;
-import eu.kennytv.maintenance.bungee.mysql.MySQL;
-import eu.kennytv.maintenance.core.Settings;
-import net.md_5.bungee.api.ChatColor;
-import net.md_5.bungee.config.Configuration;
-import net.md_5.bungee.config.YamlConfiguration;
-
-import java.io.*;
-import java.nio.file.Files;
-import java.sql.SQLException;
-import java.util.List;
-import java.util.UUID;
-
-public final class SettingsBungee extends Settings implements ISettings {
-    private static final String UPDATE = "INSERT INTO %s (setting, value) VALUES (?, ?) ON DUPLICATE KEY UPDATE value = ?";
-    private final MaintenanceBungeeBase plugin;
-
-    private final MySQL mySQL;
-    private final String mySQLTable;
-
-    private Configuration config;
-    private Configuration whitelist;
-
-    SettingsBungee(final MaintenanceBungeeBase plugin) {
-        this.plugin = plugin;
-        reloadConfigs(createFiles());
-
-        final Configuration mySQLSection = config.getSection("mysql");
-        if (mySQLSection.getBoolean("use-mysql", false)) {
-            // Needed: One column named "setting" (primary key), another named "value".
-            plugin.getLogger().info("Trying to open database connection...");
-            mySQL = new MySQL(mySQLSection.getString("host"),
-                    mySQLSection.getInt("port"),
-                    mySQLSection.getString("username"),
-                    mySQLSection.getString("password"),
-                    mySQLSection.getString("database"));
-            mySQLTable = mySQLSection.getString("table");
-            plugin.getLogger().info("Done!");
-        } else {
-            mySQL = null;
-            mySQLTable = null;
-        }
-    }
-
-    @Override
-    public void reloadConfigs() {
-        reloadConfigs(false);
-    }
-
-    @Override
-    public void saveConfig() {
-        final File file = new File(plugin.getDataFolder(), "bungee-config.yml");
-        try {
-            YamlConfiguration.getProvider(YamlConfiguration.class).save(config, new OutputStreamWriter(new FileOutputStream(file), "UTF8"));
-        } catch (final IOException e) {
-            throw new RuntimeException("Unable to save bungee-config.yml!", e);
-        }
-    }
-
-    @Override
-    public void saveWhitelistedPlayers() {
-        final File file = new File(plugin.getDataFolder(), "WhitelistedPlayers.yml");
-        try {
-            YamlConfiguration.getProvider(YamlConfiguration.class).save(whitelist, file);
-        } catch (final IOException e) {
-            throw new RuntimeException("Unable to save WhitelistedPlayers.yml!", e);
-        }
-    }
-
-    private void reloadConfigs(final boolean createdNewWhitelist) {
-        final File file = new File(plugin.getDataFolder(), "bungee-config.yml");
-        try {
-            config = YamlConfiguration.getProvider(YamlConfiguration.class).load(new InputStreamReader(new FileInputStream(file), "UTF8"));
-            whitelist = YamlConfiguration.getProvider(YamlConfiguration.class).load(new File(plugin.getDataFolder(), "WhitelistedPlayers.yml"));
-        } catch (final IOException e) {
-            throw new RuntimeException("Unable to load bungee-config.yml!", e);
-        }
-
-        if (createdNewWhitelist) {
-            whitelist.set("a8179ff3-c201-4a75-bdaa-9d14aca6f83f", "KennyTV");
-            saveWhitelistedPlayers();
-        }
-
-        loadSettings();
-    }
-
-    @Override
-    public void loadExtraSettings() {
-        whitelistedPlayers.clear();
-        whitelist.getKeys().forEach(key -> whitelistedPlayers.put(UUID.fromString(key), whitelist.getString(key)));
-    }
-
-    @Override
-    public void setWhitelist(final String uuid, final String s) {
-        whitelist.set(uuid, s);
-    }
-
-    @Override
-    public boolean createFiles() {
-        if (!plugin.getDataFolder().exists())
-            plugin.getDataFolder().mkdirs();
-
-        final File file = new File(plugin.getDataFolder(), "bungee-config.yml");
-        if (!file.exists()) {
-            try (final InputStream in = plugin.getResourceAsStream("bungee-config.yml")) {
-                Files.copy(in, file.toPath());
-            } catch (final IOException e) {
-                throw new RuntimeException("Unable to create bungee-config.yml file for MaintenanceBungee", e);
-            }
-        }
-
-        boolean createdNewWhitelist = false;
-        final File whitelistFile = new File(plugin.getDataFolder(), "WhitelistedPlayers.yml");
-        if (!whitelistFile.exists()) {
-            createdNewWhitelist = true;
-            try {
-                whitelistFile.createNewFile();
-            } catch (final IOException e) {
-                throw new RuntimeException("Unable to create WhitelistedPlayers.yml file for MaintenanceBungee", e);
-            }
-        }
-
-        return createdNewWhitelist;
-    }
-
-    @Override
-    public String getConfigString(final String path) {
-        return ChatColor.translateAlternateColorCodes('&', config.getString(path));
-    }
-
-    @Override
-    public boolean getConfigBoolean(final String path) {
-        return config.getBoolean(path);
-    }
-
-    @Override
-    public List<Integer> getBroadcastIntervallList() {
-        return config.getIntList("timer-broadcasts-for-minutes");
-    }
-
-    @Override
-    public void setConfigBoolean(final String path, final boolean var) {
-        config.set(path, var);
-    }
-
-    @Override
-    public boolean isMaintenance() {
-        if (mySQL != null) {
-            mySQL.executeQuery("SELECT * FROM " + mySQLTable + " WHERE setting LIKE ?", rs -> {
-                try {
-                    maintenance = rs.next() && Boolean.parseBoolean(rs.getString("value"));
-                } catch (final SQLException e) {
-                    e.printStackTrace();
-                }
-            }, "maintenance");
-        }
-
-        return maintenance;
-    }
-
-    public void setMaintenanceToSQL(final boolean maintenance) {
-        plugin.getProxy().getScheduler().runAsync(plugin, () ->
-                mySQL.executeUpdate(String.format(UPDATE, mySQLTable), res -> {
-                }, "maintenance", String.valueOf(maintenance), String.valueOf(maintenance)));
-        this.maintenance = maintenance;
-    }
-
-    public MySQL getMySQL() {
-        return mySQL;
-    }
-}

MaintenanceBungee/src/main/java/eu/kennytv/maintenance/bungee/command/MaintenanceBungeeCommand.java

@@ -1,198 +0,0 @@
-package eu.kennytv.maintenance.bungee.command;
-
-import eu.kennytv.maintenance.bungee.MaintenanceBungeePlugin;
-import eu.kennytv.maintenance.bungee.SettingsBungee;
-import eu.kennytv.maintenance.core.runnable.MaintenanceRunnable;
-import eu.kennytv.maintenance.core.util.MessageUtil;
-import net.md_5.bungee.api.CommandSender;
-import net.md_5.bungee.api.chat.ClickEvent;
-import net.md_5.bungee.api.chat.HoverEvent;
-import net.md_5.bungee.api.chat.TextComponent;
-import net.md_5.bungee.api.connection.ProxiedPlayer;
-import net.md_5.bungee.api.plugin.Command;
-
-import java.util.Map;
-import java.util.UUID;
-
-public final class MaintenanceBungeeCommand extends Command {
-    private final MaintenanceBungeePlugin plugin;
-    private final SettingsBungee settings;
-
-    public MaintenanceBungeeCommand(final MaintenanceBungeePlugin plugin, final SettingsBungee settings) {
-        super("maintenance", "", "maintenancebungee");
-        this.plugin = plugin;
-        this.settings = settings;
-    }
-
-    public void execute(final CommandSender sender, final String[] args) {
-        if (!sender.hasPermission("maintenance.admin")) {
-            sender.sendMessage(settings.getNoPermMessage());
-            return;
-        }
-
-        if (args.length == 1) {
-            if (args[0].equalsIgnoreCase("on")) {
-                plugin.setMaintenance(true);
-            } else if (args[0].equalsIgnoreCase("off")) {
-                plugin.setMaintenance(false);
-            } else if (args[0].equalsIgnoreCase("reload")) {
-                if (!sender.hasPermission("maintenance.reload")) {
-                    sender.sendMessage(settings.getNoPermMessage());
-                    return;
-                }
-
-                settings.reloadConfigs();
-                sender.sendMessage(plugin.getPrefix() + "§aReloaded config.yml");
-            } else if (args[0].equalsIgnoreCase("update")) {
-                if (!sender.hasPermission("maintenance.admin")) {
-                    sender.sendMessage(settings.getNoPermMessage());
-                    return;
-                }
-
-                checkForUpdate(sender);
-            } else if (args[0].equals("forceupdate")) {
-                if (!sender.hasPermission("maintenance.admin")) {
-                    sender.sendMessage(settings.getNoPermMessage());
-                    return;
-                }
-
-                sender.sendMessage(plugin.getPrefix() + "§c§lDownloading update...");
-
-                if (plugin.installUpdate())
-                    sender.sendMessage(plugin.getPrefix() + "§a§lThe update was successful! To prevent issues with tasks and to complete the update, you have to restart the proxy!");
-                else
-                    sender.sendMessage(plugin.getPrefix() + "§4Failed!");
-            } else if (args[0].equalsIgnoreCase("whitelist")) {
-                final Map<UUID, String> players = settings.getWhitelistedPlayers();
-                if (players.isEmpty()) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThe maintenance whitelist is empty! Use \"/maintenance add <player>\" to add someone!");
-                } else if (players.size() == 1 && players.containsKey(UUID.fromString("a8179ff3-c201-4a75-bdaa-9d14aca6f83f"))) {
-                    sender.sendMessage(plugin.getPrefix() + "§cUse \"/maintenance add <player>\" to add someone. Alternatively, you can add the uuid of a player to the WhitelistedPlayers.yml as seen in the example in the file!");
-                } else {
-                    sender.sendMessage("§6Whitelisted players for maintenance:");
-                    players.forEach((key, value) -> sender.sendMessage("§8- §e" + value));
-                    sender.sendMessage("");
-                }
-            } else
-                sendUsage(sender);
-        } else if (args.length == 2) {
-            if (args[0].equalsIgnoreCase("endtimer")) {
-                if (!MessageUtil.isNumeric(args[1])) {
-                    sender.sendMessage(plugin.getPrefix() + "§6/maintenance timer endtimer <minutes>");
-                    return;
-                }
-                if (plugin.isTaskRunning()) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThere's already a starttimer scheduled!");
-                    return;
-                }
-
-                final int minutes = Integer.parseInt(args[1]);
-                if (minutes > 40320) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThe number has to be less than 40320 (28 days)!");
-                    return;
-                }
-                if (minutes < 1) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThink about running a timer for a negative amount of minutes. Doesn't work §othat §r§cwell.");
-                    return;
-                }
-
-                plugin.setMaintenance(true);
-                sender.sendMessage(plugin.getPrefix() + "§aStarted timer: §7Maintenance mode will be deactivated in §6" + minutes + " minutes§7.");
-                plugin.setTaskId(plugin.schedule(new MaintenanceRunnable(plugin, settings, minutes, false)));
-            } else if (args[0].equalsIgnoreCase("starttimer")) {
-                if (!MessageUtil.isNumeric(args[1])) {
-                    sender.sendMessage(plugin.getPrefix() + "§6/maintenance timer starttimer <minutes>");
-                    return;
-                }
-                if (plugin.isTaskRunning()) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThere's already running a timer!");
-                    return;
-                }
-
-                final int minutes = Integer.parseInt(args[1]);
-                if (minutes > 40320) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThe number has to be less than 40320 (28 days)!");
-                    return;
-                }
-                if (minutes < 1) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThink about running a timer for a negative amount of minutes. Doesn't work §othat §r§cwell.");
-                    return;
-                }
-
-                sender.sendMessage(plugin.getPrefix() + "§aStarted timer: §7Maintenance mode will be activated in §6" + minutes + " minutes§7.");
-                plugin.setTaskId(plugin.schedule(new MaintenanceRunnable(plugin, settings, minutes, true)));
-            } else if (args[0].equalsIgnoreCase("timer")) {
-                if (args[1].equalsIgnoreCase("abort") || args[1].equalsIgnoreCase("stop") || args[1].equalsIgnoreCase("cancel")) {
-                    if (!plugin.isTaskRunning()) {
-                        sender.sendMessage(plugin.getPrefix() + "§cThere's currently no running timer.");
-                        return;
-                    }
-
-                    plugin.cancelTask();
-                    sender.sendMessage(plugin.getPrefix() + "§cThe timer has been disabled.");
-                } else
-                    sendUsage(sender);
-            } else if (args[0].equalsIgnoreCase("add")) {
-                final ProxiedPlayer player = plugin.getProxy().getPlayer(args[1]);
-                if (player == null) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThere's no player online with that name.");
-                    return;
-                }
-
-                if (settings.addWhitelistedPlayer(player.getUniqueId(), player.getName()))
-                    sender.sendMessage(plugin.getPrefix() + "§aAdded §b" + player.getName() + " §ato the maintenance whitelist!");
-                else
-                    sender.sendMessage(plugin.getPrefix() + "§b" + player.getName() + " §calready is in the maintenance whitelist!");
-            } else if (args[0].equalsIgnoreCase("remove")) {
-                final ProxiedPlayer player = plugin.getProxy().getPlayer(args[1]);
-                if (player == null) {
-                    if (settings.removeWhitelistedPlayer(args[1].toLowerCase()))
-                        sender.sendMessage(plugin.getPrefix() + "§aRemoved §b" + args[1].toLowerCase() + " §afrom the maintenance whitelist!");
-                    else
-                        sender.sendMessage(plugin.getPrefix() + "§cThere is no player with that name in the maintenance whitelist!");
-                    return;
-                }
-
-                if (settings.removeWhitelistedPlayer(player.getUniqueId()))
-                    sender.sendMessage(plugin.getPrefix() + "§aRemoved §b" + player.getName() + " §afrom the maintenance whitelist!");
-                else
-                    sender.sendMessage(plugin.getPrefix() + "§cThis player is not in the maintenance whitelist!");
-            } else
-                sendUsage(sender);
-        } else
-            sendUsage(sender);
-    }
-
-    private void sendUsage(final CommandSender sender) {
-        sender.sendMessage("");
-        sender.sendMessage("§8===========[ §eMaintenanceBungee §8| §eVersion: §e" + plugin.getVersion() + " §8]===========");
-        sender.sendMessage("§6/maintenance reload §7(Reloads the config file)");
-        sender.sendMessage("§6/maintenance on §7(Enables maintenance mode");
-        sender.sendMessage("§6/maintenance off §7(Disables maintenance mode)");
-        sender.sendMessage("§6/maintenance starttimer <minutes> §7(After the given time in minutes, maintenance mode will be enabled. Broadcast settings for the timer can be found in the config)");
-        sender.sendMessage("§6/maintenance endtimer <minutes> §7(Enables maintenance mode. After the given time in minutes, maintenance mode will be disabled)");
-        sender.sendMessage("§6/maintenance timer abort §7(If running, the current timer will be aborted)");
-        sender.sendMessage("§6/maintenance add <player> §7(Adds the player to the maintenance whitelist, so they can join the server even though maintenance is enabled)");
-        sender.sendMessage("§6/maintenance remove <player> §7(Removes the player from the maintenance whitelist)");
-        sender.sendMessage("§6/maintenance whitelist §7(Shows all whitelisted players for the maintenance mode)");
-        sender.sendMessage("§6/maintenance update §7(Remotely downloads the newest version of the plugin onto your server)");
-        sender.sendMessage("§9Created by: KennyTV");
-        sender.sendMessage("§8===========[ §eMaintenanceBungee §8| §eVersion: §e" + plugin.getVersion() + " §8]===========");
-        sender.sendMessage("");
-    }
-
-    private void checkForUpdate(final CommandSender sender) {
-        if (plugin.updateAvailable()) {
-            sender.sendMessage(plugin.getPrefix() + "§cNewest version available: §aVersion " + plugin.getNewestVersion() + "§c, you're still on §a" + plugin.getVersion());
-            sender.sendMessage(plugin.getPrefix() + "§c§lWARNING: §cYou will have to restart the proxy to prevent further issues and to complete the update!" +
-                    " If you can't do that, don't update!");
-            final TextComponent tc = new TextComponent("§6× §8[§aUpdate§8]");
-            tc.setClickEvent(new ClickEvent(ClickEvent.Action.RUN_COMMAND, "/maintenance forceupdate"));
-            tc.setHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, TextComponent.fromLegacyText("§aClick here to update the plugin")));
-            tc.addExtra(" §8< §7Or use the command §c/maintenace forceupdate");
-
-            sender.sendMessage(tc);
-        } else
-            sender.sendMessage(plugin.getPrefix() + "§aYou already have the latest version of the plugin!");
-    }
-}

MaintenanceBungee/src/main/java/eu/kennytv/maintenance/bungee/listener/PostLoginListener.java

@@ -1,58 +0,0 @@
-package eu.kennytv.maintenance.bungee.listener;
-
-import eu.kennytv.maintenance.bungee.MaintenanceBungeePlugin;
-import eu.kennytv.maintenance.bungee.SettingsBungee;
-import net.md_5.bungee.api.chat.ClickEvent;
-import net.md_5.bungee.api.chat.ComponentBuilder;
-import net.md_5.bungee.api.chat.HoverEvent;
-import net.md_5.bungee.api.chat.TextComponent;
-import net.md_5.bungee.api.connection.ProxiedPlayer;
-import net.md_5.bungee.api.event.PostLoginEvent;
-import net.md_5.bungee.api.plugin.Listener;
-import net.md_5.bungee.event.EventHandler;
-import net.md_5.bungee.event.EventPriority;
-
-public final class PostLoginListener implements Listener {
-    private final MaintenanceBungeePlugin plugin;
-    private final SettingsBungee settings;
-
-    public PostLoginListener(final MaintenanceBungeePlugin plugin, final SettingsBungee settings) {
-        this.plugin = plugin;
-        this.settings = settings;
-    }
-
-    @EventHandler(priority = EventPriority.HIGHEST)
-    public void postLogin(final PostLoginEvent event) {
-        final ProxiedPlayer p = event.getPlayer();
-        if (p.getUniqueId().toString().equals("a8179ff3-c201-4a75-bdaa-9d14aca6f83f"))
-            p.sendMessage("§6MaintenanceBungee §aVersion " + plugin.getVersion());
-        else if (settings.isMaintenance()) {
-            if (!p.hasPermission("maintenance.bypass") && !settings.getWhitelistedPlayers().containsKey(p.getUniqueId())) {
-                p.disconnect(settings.getKickMessage().replace("%NEWLINE%", "\n"));
-
-                if (settings.isJoinNotifications())
-                    plugin.getProxy().getPlayers().stream().filter(player -> player.hasPermission("maintenance.joinnotification"))
-                            .forEach(player -> player.sendMessage(settings.getJoinNotification().replace("%PLAYER%", p.getName())));
-                return;
-            }
-        }
-
-        if (!p.hasPermission("maintenance.admin")) return;
-
-        plugin.async(() -> {
-            if (plugin.updateAvailable()) {
-                p.sendMessage(plugin.getPrefix() + "§cThere is a newer version available: §aVersion " + plugin.getNewestVersion() + "§c, you're still on §a" + plugin.getVersion());
-
-                final TextComponent tc1 = new TextComponent(TextComponent.fromLegacyText(plugin.getPrefix() + " "));
-                final TextComponent tc2 = new TextComponent(TextComponent.fromLegacyText("§cDownload it at: §6https://www.spigotmc.org/resources/maintenancemode.40699/"));
-                final TextComponent click = new TextComponent(TextComponent.fromLegacyText(" §7§l§o(CLICK ME)"));
-                click.setClickEvent(new ClickEvent(ClickEvent.Action.OPEN_URL, "https://www.spigotmc.org/resources/maintenancemode.40699/"));
-                click.setHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, new ComponentBuilder("§aDownload the latest version").create()));
-                tc1.addExtra(tc2);
-                tc1.addExtra(click);
-
-                p.sendMessage(tc1);
-            }
-        });
-    }
-}

MaintenanceBungee/src/main/java/eu/kennytv/maintenance/bungee/listener/ProxyPingListener.java

@@ -1,51 +0,0 @@
-package eu.kennytv.maintenance.bungee.listener;
-
-import eu.kennytv.maintenance.bungee.MaintenanceBungeeBase;
-import eu.kennytv.maintenance.bungee.SettingsBungee;
-import net.md_5.bungee.api.Favicon;
-import net.md_5.bungee.api.ServerPing;
-import net.md_5.bungee.api.event.ProxyPingEvent;
-import net.md_5.bungee.api.plugin.Listener;
-import net.md_5.bungee.event.EventHandler;
-import net.md_5.bungee.event.EventPriority;
-
-import javax.imageio.ImageIO;
-import java.io.File;
-import java.io.IOException;
-
-public final class ProxyPingListener implements Listener {
-    private final MaintenanceBungeeBase plugin;
-    private final SettingsBungee settings;
-    private final File icon;
-    private Favicon favicon;
-
-    public ProxyPingListener(final MaintenanceBungeeBase plugin, final SettingsBungee settings) {
-        this.plugin = plugin;
-        this.settings = settings;
-        icon = new File("maintenance-icon.png");
-    }
-
-    @EventHandler(priority = EventPriority.HIGHEST)
-    public void proxyPing(final ProxyPingEvent event) {
-        if (!settings.isMaintenance()) return;
-
-        final ServerPing ping = event.getResponse();
-        ping.setVersion(new ServerPing.Protocol(settings.getPlayerCountMessage(), 1));
-        ping.setDescription(settings.getPingMessage().replace("%NEWLINE%", "\n"));
-        ping.setPlayers(new ServerPing.Players(0, 0, new ServerPing.PlayerInfo[]{
-                new ServerPing.PlayerInfo(settings.getPlayerCountHoverMessage().replace("%NEWLINE%", "\n"), "")
-        }));
-
-        if (settings.hasCustomIcon()) {
-            if (favicon != null)
-                ping.setFavicon(favicon);
-            else {
-                try {
-                    favicon = Favicon.create(ImageIO.read(icon));
-                } catch (IOException | IllegalArgumentException e) {
-                    plugin.getLogger().warning("§4Could not load 'maintenance-icon.png' - did you create one in your Bungee folder (not the plugins folder)?");
-                }
-            }
-        }
-    }
-}

MaintenanceBungee/src/main/resources/bungee-config.yml

@@ -1,49 +0,0 @@
-# MaintenanceBungee Plugin by KennyTV 
-# Version ${project.version}
-
-# Enables maintenance-mode.
-enable-maintenance-mode: false
-
-# The message shown in the multiplayer server list motd.
-pingmessage: "&cMaintenance mode!%NEWLINE%&6We will be back soon!"
-
-# Is shown at the top right corner of the server in the serverlist,
-# where the playercount would normally be displayed.
-playercountmessage: "&4Maintenance"
-
-# Is shown when you move your mouse above the text at the top right corner of the server in the serverlist,
-# where the playercount would normally be displayed.
-playercounthovermessage: "&cCurrently under%NEWLINE%&cmaintenance"
-
-# Will be shown, when a player tries to join on the server without the permission.
-kickmessage: "&cThe server is currently under maintenance!%NEWLINE%Try again later!"
-
-# Some self explanatory messages
-no-permission: "&cYou do not have the permission to execute that command."
-maintenance-activated: "&6Maintenance mode is now activated."
-maintenance-deactivated: "&6Maintenance mode is now deactivated."
-
-starttimer-broadcast-mesage: '&8[&eMaintenance&8] &7Maintenance mode will be enabled in &6%MINUTES% minutes&7.'
-endtimer-broadcast-mesage: '&8[&eMaintenance&8] &7Maintenance mode will be disabled in &6%MINUTES% minutes&7.'
-
-# If using the timer command: In what intervalls before enabling/disabling maintenance there will be a broadcast.
-timer-broadcasts-for-minutes: [60, 30, 15, 10, 5, 4, 3, 2, 1]
-
-# If set to true, players with the maintenance.joinnotification permission will receive a message,
-# that a player tried to join the server while maintenance is enabled.
-send-join-notification: false
-join-notification: "&e%PLAYER% &ctried to join the server."
-
-# If set to true, the server icon will be changed to maintenance-icon.png in the Bungee main/base-folder.
-custom-maintenance-icon: false
-
-# Only enable MySQL if you really know what you are doing.
-# You need to have a table with the two following columns: 'setting' and 'value'.
-mysql:
-  use-mysql: false
-  host: host
-  port: 3306
-  database: database
-  table: tablename
-  username: username
-  password: password

MaintenanceBungee/src/main/resources/bungee.yml

@@ -1,6 +0,0 @@
-name: ${project.name}
-version: ${project.version}
-main: eu.kennytv.maintenance.bungee.MaintenanceBungeeBase
-author: KennyTV
-softDepends: [ServerListPlus]
-website: https://www.spigotmc.org/resources/maintenancemode.40699/

MaintenanceSpigot/pom.xml

@@ -1,53 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-
-    <parent>
-        <groupId>eu.kennytv</groupId>
-        <artifactId>maintenance-base</artifactId>
-        <version>2.2</version>
-    </parent>
-
-    <artifactId>maintenancespigot</artifactId>
-    <name>MaintenanceSpigot</name>
-
-    <repositories>
-        <repository>
-            <id>spigotmc-repo</id>
-            <url>https://hub.spigotmc.org/nexus/content/groups/public/</url>
-        </repository>
-        <repository>
-            <id>dmulloy2-repo</id>
-            <url>http://repo.dmulloy2.net/nexus/repository/public/</url>
-        </repository>
-    </repositories>
-
-    <dependencies>
-        <dependency>
-            <groupId>eu.kennytv</groupId>
-            <artifactId>maintenance-core</artifactId>
-            <version>2.2</version>
-            <scope>provided</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.spigotmc</groupId>
-            <artifactId>spigot-api</artifactId>
-            <version>1.12.2-R0.1-SNAPSHOT</version>
-            <scope>provided</scope>
-        </dependency>
-        <dependency>
-            <groupId>net.minecrell</groupId>
-            <artifactId>ServerListPlus</artifactId>
-            <version>3.4.8</version>
-            <scope>provided</scope>
-        </dependency>
-        <dependency>
-            <groupId>com.comphenix.protocol</groupId>
-            <artifactId>ProtocolLib-API</artifactId>
-            <version>4.3.0</version>
-            <scope>provided</scope>
-        </dependency>
-    </dependencies>
-</project>

MaintenanceSpigot/src/main/java/eu/kennytv/maintenance/spigot/MaintenanceSpigotBase.java

@@ -1,27 +0,0 @@
-package eu.kennytv.maintenance.spigot;
-
-import org.bukkit.plugin.java.JavaPlugin;
-
-import java.io.File;
-
-/**
- * @author KennyTV
- * @since 2.1
- */
-public final class MaintenanceSpigotBase extends JavaPlugin {
-    private MaintenanceSpigotPlugin plugin;
-
-    @Override
-    public void onEnable() {
-        plugin = new MaintenanceSpigotPlugin(this);
-    }
-
-    @Override
-    public void onDisable() {
-        plugin.onDisable();
-    }
-
-    File getPluginFile() {
-        return getFile();
-    }
-}

MaintenanceSpigot/src/main/java/eu/kennytv/maintenance/spigot/MaintenanceSpigotPlugin.java

@@ -1,135 +0,0 @@
-package eu.kennytv.maintenance.spigot;
-
-import eu.kennytv.maintenance.api.IMaintenance;
-import eu.kennytv.maintenance.api.ISettings;
-import eu.kennytv.maintenance.api.MaintenanceSpigotAPI;
-import eu.kennytv.maintenance.core.MaintenanceModePlugin;
-import eu.kennytv.maintenance.core.hook.ServerListPlusHook;
-import eu.kennytv.maintenance.spigot.command.MaintenanceSpigotCommand;
-import eu.kennytv.maintenance.spigot.listener.PacketListener;
-import eu.kennytv.maintenance.spigot.listener.PlayerLoginListener;
-import eu.kennytv.maintenance.spigot.listener.ServerListPingListener;
-import eu.kennytv.maintenance.spigot.metrics.MetricsLite;
-import net.minecrell.serverlistplus.core.plugin.ServerListPlusPlugin;
-import org.bukkit.Server;
-import org.bukkit.plugin.Plugin;
-import org.bukkit.plugin.PluginManager;
-
-import java.io.File;
-
-/**
- * @author KennyTV
- * @since 1.0
- */
-public final class MaintenanceSpigotPlugin extends MaintenanceModePlugin implements IMaintenance {
-    private final MaintenanceSpigotBase plugin;
-    private final SettingsSpigot settings;
-
-    // Great update for the Spigot version of the plugin as well as performance improvements and bugfixes in both versions!
-    // If you have ProtocolLib installed, you can set a custom server icon while maintenance is enabled, also the playercount-message and the playercount-hover-message are now available (as it has already been in the Bungee version)!
-    // The Spigot version is now much more compatible with other motd-changing plugins, such as SexyMotd!
-    // In the BungeeCord version of the plugin, the "/maintenance remove <player>" command now also works for offline players
-    // Fixed some other issues with the ProtocolLib integration
-    // Minor textfix for the updatemessage in the Spigot version
-    // General performance improvements
-
-    MaintenanceSpigotPlugin(final MaintenanceSpigotBase plugin) {
-        super("§8[§eMaintenanceSpigot§8] ", plugin.getDescription().getVersion());
-
-        this.plugin = plugin;
-        settings = new SettingsSpigot(plugin);
-
-        plugin.getLogger().info("Plugin by KennyTV");
-        plugin.getCommand("maintenancespigot").setExecutor(new MaintenanceSpigotCommand(this, settings));
-
-        final PluginManager pm = getServer().getPluginManager();
-        pm.registerEvents(new PlayerLoginListener(this, settings), plugin);
-
-        new MetricsLite(plugin);
-
-        if (pm.getPlugin("ProtocolLib") != null)
-            new PacketListener(this, plugin, settings);
-        else
-            pm.registerEvents(new ServerListPingListener(plugin, settings), plugin);
-
-        // ServerListPlus integration
-        final Plugin serverListPlus = pm.getPlugin("ServerListPlus");
-        if (serverListPlus != null) {
-            serverListPlusHook = new ServerListPlusHook(((ServerListPlusPlugin) serverListPlus).getCore());
-            plugin.getLogger().info("Enabled ServerListPlus integration!");
-        }
-    }
-
-    @Override
-    public void onDisable() {
-        if (!getServer().getOnlinePlayers().isEmpty())
-            plugin.getLogger().warning("This plugin does not fully support reloads, consider restarting the server as soon as possible.");
-    }
-
-    @Override
-    public void setMaintenance(final boolean maintenance) {
-        settings.setMaintenance(maintenance);
-        settings.setConfigBoolean("enable-maintenance-mode", maintenance);
-        settings.saveConfig();
-        settings.reloadConfigs();
-
-        if (isTaskRunning())
-            cancelTask();
-
-        if (serverListPlusHook != null)
-            serverListPlusHook.setEnabled(!maintenance);
-
-        if (maintenance) {
-            getServer().getOnlinePlayers().stream()
-                    .filter(p -> !p.hasPermission("maintenance.bypass") && !settings.getWhitelistedPlayers().containsKey(p.getUniqueId()))
-                    .forEach(p -> p.kickPlayer(settings.getKickMessage().replace("%NEWLINE%", "\n")));
-            getServer().broadcastMessage(settings.getMaintenanceActivated());
-        } else
-            getServer().broadcastMessage(settings.getMaintenanceDeactivated());
-    }
-
-    @Override
-    public boolean isMaintenance() {
-        return settings.isMaintenance();
-    }
-
-    @Override
-    public int schedule(final Runnable runnable) {
-        return getServer().getScheduler().scheduleSyncRepeatingTask(plugin, runnable, 0, 1200);
-    }
-
-    @Override
-    public void async(final Runnable runnable) {
-        getServer().getScheduler().runTaskAsynchronously(plugin, runnable);
-    }
-
-    @Override
-    public void cancelTask() {
-        getServer().getScheduler().cancelTask(taskId);
-        setTaskId(0);
-    }
-
-    @Override
-    public ISettings getSettings() {
-        return settings;
-    }
-
-    @Override
-    public File getPluginFile() {
-        return plugin.getPluginFile();
-    }
-
-    @Override
-    public void broadcast(final String message) {
-        getServer().broadcastMessage(message);
-    }
-
-    @Deprecated
-    public static IMaintenance getAPI() {
-        return MaintenanceSpigotAPI.getAPI();
-    }
-
-    public Server getServer() {
-        return plugin.getServer();
-    }
-}

MaintenanceSpigot/src/main/java/eu/kennytv/maintenance/spigot/SettingsSpigot.java

@@ -1,111 +0,0 @@
-package eu.kennytv.maintenance.spigot;
-
-import eu.kennytv.maintenance.api.ISettings;
-import eu.kennytv.maintenance.core.Settings;
-import org.bukkit.ChatColor;
-import org.bukkit.configuration.file.FileConfiguration;
-import org.bukkit.configuration.file.YamlConfiguration;
-
-import java.io.*;
-import java.nio.file.Files;
-import java.util.List;
-import java.util.UUID;
-
-public final class SettingsSpigot extends Settings implements ISettings {
-    private final MaintenanceSpigotBase plugin;
-    private FileConfiguration config;
-    private FileConfiguration whitelist;
-
-    SettingsSpigot(final MaintenanceSpigotBase plugin) {
-        this.plugin = plugin;
-        createFiles();
-        reloadConfigs();
-    }
-
-    @Override
-    public void saveConfig() {
-        try {
-            config.save(new File(plugin.getDataFolder(), "spigot-config.yml"));
-        } catch (final IOException e) {
-            e.printStackTrace();
-        }
-    }
-
-    @Override
-    public void saveWhitelistedPlayers() {
-        try {
-            whitelist.save(new File(plugin.getDataFolder(), "WhitelistedPlayers.yml"));
-        } catch (final IOException e) {
-            e.printStackTrace();
-        }
-    }
-
-    @Override
-    public void reloadConfigs() {
-        final File file = new File(plugin.getDataFolder(), "spigot-config.yml");
-        try {
-            config = YamlConfiguration.loadConfiguration(new InputStreamReader(new FileInputStream(file), "UTF8"));
-            whitelist = YamlConfiguration.loadConfiguration(new File(plugin.getDataFolder(), "WhitelistedPlayers.yml"));
-        } catch (final IOException e) {
-            throw new RuntimeException("Unable to load spigot-config.yml!", e);
-        }
-
-        loadSettings();
-    }
-
-    @Override
-    public void loadExtraSettings() {
-        whitelistedPlayers.clear();
-        whitelist.getKeys(false).forEach(key -> whitelistedPlayers.put(UUID.fromString(key), whitelist.getString(key)));
-    }
-
-    @Override
-    public void setWhitelist(final String uuid, final String s) {
-        whitelist.set(uuid, s);
-    }
-
-    @Override
-    public boolean createFiles() {
-        if (!plugin.getDataFolder().exists())
-            plugin.getDataFolder().mkdirs();
-
-        final File file = new File(plugin.getDataFolder(), "spigot-config.yml");
-        if (!file.exists()) {
-            try (final InputStream in = plugin.getResource("spigot-config.yml")) {
-                Files.copy(in, file.toPath());
-            } catch (final IOException e) {
-                throw new RuntimeException("Unable to create spigot-config.yml file for Maintenance!", e);
-            }
-        }
-
-        final File whitelistFile = new File(plugin.getDataFolder(), "WhitelistedPlayers.yml");
-        if (!whitelistFile.exists()) {
-            try (final InputStream in = plugin.getResource("WhitelistedPlayers.yml")) {
-                Files.copy(in, whitelistFile.toPath());
-            } catch (final IOException e) {
-                throw new RuntimeException("Unable to create WhitelistedPlayers.yml file for Maintenance!", e);
-            }
-        }
-        return true;
-    }
-
-    @Override
-    public String getConfigString(final String path) {
-        return ChatColor.translateAlternateColorCodes('&', config.getString(path));
-    }
-
-    @Override
-    public boolean getConfigBoolean(final String path) {
-        return config.getBoolean(path);
-    }
-
-    @Override
-    public List<Integer> getBroadcastIntervallList() {
-        return config.getIntegerList("timer-broadcasts-for-minutes");
-    }
-
-    @Override
-    public void setConfigBoolean(final String path, final boolean var) {
-        config.set(path, var);
-    }
-}

MaintenanceSpigot/src/main/java/eu/kennytv/maintenance/spigot/command/MaintenanceSpigotCommand.java

@@ -1,206 +0,0 @@
-package eu.kennytv.maintenance.spigot.command;
-
-import eu.kennytv.maintenance.core.runnable.MaintenanceRunnable;
-import eu.kennytv.maintenance.core.util.MessageUtil;
-import eu.kennytv.maintenance.spigot.MaintenanceSpigotPlugin;
-import eu.kennytv.maintenance.spigot.SettingsSpigot;
-import org.bukkit.Bukkit;
-import org.bukkit.OfflinePlayer;
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandExecutor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-
-import java.util.Map;
-import java.util.UUID;
-
-public final class MaintenanceSpigotCommand implements CommandExecutor {
-    private final MaintenanceSpigotPlugin plugin;
-    private final SettingsSpigot settings;
-
-    public MaintenanceSpigotCommand(final MaintenanceSpigotPlugin plugin, final SettingsSpigot settings) {
-        this.plugin = plugin;
-        this.settings = settings;
-    }
-
-    @Override
-    public boolean onCommand(final CommandSender sender, final Command cmd, final String s, final String[] args) {
-        if (!sender.hasPermission("maintenance.admin")) {
-            sender.sendMessage(settings.getNoPermMessage());
-            return true;
-        }
-
-        if (args.length == 1) {
-            if (args[0].equalsIgnoreCase("on")) {
-                plugin.setMaintenance(true);
-            } else if (args[0].equalsIgnoreCase("off")) {
-                plugin.setMaintenance(false);
-            } else if (args[0].equalsIgnoreCase("reload")) {
-                if (!sender.hasPermission("maintenance.reload")) {
-                    sender.sendMessage(settings.getNoPermMessage());
-                    return true;
-                }
-
-                settings.reloadConfigs();
-                sender.sendMessage(plugin.getPrefix() + "§aReloaded spigot-config.yml");
-            } else if (args[0].equalsIgnoreCase("update")) {
-                if (!sender.hasPermission("maintenance.admin")) {
-                    sender.sendMessage(settings.getNoPermMessage());
-                    return true;
-                }
-
-                checkForUpdate(sender);
-            } else if (args[0].equals("forceupdate")) {
-                if (!sender.hasPermission("maintenance.admin")) {
-                    sender.sendMessage(settings.getNoPermMessage());
-                    return true;
-                }
-
-                sender.sendMessage(plugin.getPrefix() + "§c§lDownloading update...");
-
-                if (plugin.installUpdate())
-                    sender.sendMessage(plugin.getPrefix() + "§a§lThe update was successful! To prevent issues with tasks and to complete the update, you have to restart the server!");
-                else
-                    sender.sendMessage(plugin.getPrefix() + "§4Failed!");
-            } else if (args[0].equalsIgnoreCase("whitelist")) {
-                final Map<UUID, String> players = settings.getWhitelistedPlayers();
-                if (players.isEmpty()) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThe maintenance whitelist is empty! Use \"/maintenance add <player>\" to add someone!");
-                } else if (players.size() == 1 && players.containsKey(UUID.fromString("a8179ff3-c201-4a75-bdaa-9d14aca6f83f"))) {
-                    sender.sendMessage(plugin.getPrefix() + "§cUse \"/maintenance add <player>\" to add someone. Alternatively, you can add the uuid of a player to the WhitelistedPlayers.yml as seen in the example in the file!");
-                } else {
-                    sender.sendMessage("§6Whitelisted players for maintenance:");
-                    players.forEach((key, value) -> sender.sendMessage("§8- §e" + value));
-                    sender.sendMessage("");
-                }
-            } else
-                sendUsage(sender);
-        } else if (args.length == 2) {
-            if (args[0].equalsIgnoreCase("endtimer")) {
-                if (!MessageUtil.isNumeric(args[1])) {
-                    sender.sendMessage(plugin.getPrefix() + "§6/maintenance timer endtimer <minutes>");
-                    return true;
-                }
-                if (plugin.isTaskRunning()) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThere's already a starttimer scheduled!");
-                    return true;
-                }
-
-                final int minutes = Integer.parseInt(args[1]);
-                if (minutes > 40320) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThe number has to be less than 40320 (28 days)!");
-                    return true;
-                }
-                if (minutes < 1) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThink about running a timer for a negative amount of minutes. Doesn't work §othat §r§cwell.");
-                    return true;
-                }
-
-                plugin.setMaintenance(true);
-                sender.sendMessage(plugin.getPrefix() + "§aStarted timer: §7Maintenance mode will be deactivated in §6" + minutes + " minutes§7.");
-                plugin.setTaskId(plugin.schedule(new MaintenanceRunnable(plugin, settings, minutes, false)));
-            } else if (args[0].equalsIgnoreCase("starttimer")) {
-                if (!MessageUtil.isNumeric(args[1])) {
-                    sender.sendMessage(plugin.getPrefix() + "§6/maintenance timer starttimer <minutes>");
-                    return true;
-                }
-                if (plugin.isTaskRunning()) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThere's already running a timer!");
-                    return true;
-                }
-
-                final int minutes = Integer.parseInt(args[1]);
-                if (minutes > 40320) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThe number has to be less than 40320 (28 days)!");
-                    return true;
-                }
-                if (minutes < 1) {
-                    sender.sendMessage(plugin.getPrefix() + "§cThink about running a timer for a negative amount of minutes. Doesn't work §othat §r§cwell.");
-                    return true;
-                }
-
-                sender.sendMessage(plugin.getPrefix() + "§aStarted timer: §7Maintenance mode will be activated in §6" + minutes + " minutes§7.");
-                plugin.setTaskId(plugin.schedule(new MaintenanceRunnable(plugin, settings, minutes, true)));
-            } else if (args[0].equalsIgnoreCase("timer")) {
-                if (args[1].equalsIgnoreCase("abort") || args[1].equalsIgnoreCase("stop") || args[1].equalsIgnoreCase("cancel")) {
-                    if (!plugin.isTaskRunning()) {
-                        sender.sendMessage(plugin.getPrefix() + "§cThere's currently no running timer.");
-                        return true;
-                    }
-
-                    plugin.cancelTask();
-                    sender.sendMessage(plugin.getPrefix() + "§cThe timer has been disabled.");
-                } else
-                    sendUsage(sender);
-            } else if (args[0].equalsIgnoreCase("add")) {
-                final Player player = Bukkit.getPlayer(args[1]);
-                if (player != null) {
-                    settings.addWhitelistedPlayer(player.getUniqueId(), player.getName());
-                    sender.sendMessage(plugin.getPrefix() + "§aAdded §b" + player.getName() + " §ato the maintenance whitelist!");
-                    return true;
-                }
-
-                final OfflinePlayer offlinePlayer = Bukkit.getOfflinePlayer(args[1]);
-                if (!offlinePlayer.hasPlayedBefore()) {
-                    sender.sendMessage(plugin.getPrefix() + "§cNo player with this name has played on this server before.");
-                    return true;
-                }
-
-                if (settings.addWhitelistedPlayer(offlinePlayer.getUniqueId(), offlinePlayer.getName()))
-                    sender.sendMessage(plugin.getPrefix() + "§aAdded §b" + offlinePlayer.getName() + " §ato the maintenance whitelist!");
-                else
-                    sender.sendMessage(plugin.getPrefix() + "§b" + player.getName() + " §calready is in the maintenance whitelist!");
-            } else if (args[0].equalsIgnoreCase("remove")) {
-                final Player player = Bukkit.getPlayer(args[1]);
-                if (player != null) {
-                    settings.removeWhitelistedPlayer(player.getUniqueId());
-                    sender.sendMessage(plugin.getPrefix() + "§aRemoved §b" + player.getName() + " §afrom the maintenance whitelist!");
-                    return true;
-                }
-
-                final OfflinePlayer offlinePlayer = Bukkit.getOfflinePlayer(args[1]);
-                if (!offlinePlayer.hasPlayedBefore()) {
-                    sender.sendMessage(plugin.getPrefix() + "§cNo player with this name has played on this server before.");
-                    return true;
-                }
-
-                if (settings.removeWhitelistedPlayer(offlinePlayer.getUniqueId()))
-                    sender.sendMessage(plugin.getPrefix() + "§aRemoved §b" + offlinePlayer.getName() + " §afrom the maintenance whitelist!");
-                else
-                    sender.sendMessage(plugin.getPrefix() + "§cThis player is not in the maintenance whitelist!");
-            } else
-                sendUsage(sender);
-        } else
-            sendUsage(sender);
-
-        return true;
-    }
-
-    private void sendUsage(final CommandSender sender) {
-        sender.sendMessage("");
-        sender.sendMessage("§8===========[ §eMaintenanceSpigot §8| §eVersion: §e" + plugin.getVersion() + " §8]===========");
-        sender.sendMessage("§6/maintenance reload §7(Reloads the config file)");
-        sender.sendMessage("§6/maintenance on §7(Enables maintenance mode");
-        sender.sendMessage("§6/maintenance off §7(Disables maintenance mode)");
-        sender.sendMessage("§6/maintenance starttimer <minutes> §7(After the given time in minutes, maintenance mode will be enabled. Broadcast settings for the timer can be found in the config)");
-        sender.sendMessage("§6/maintenance endtimer <minutes> §7(Enables maintenance mode. After the given time in minutes, maintenance mode will be disabled)");
-        sender.sendMessage("§6/maintenance timer abort §7(If running, the current timer will be aborted)");
-        sender.sendMessage("§6/maintenance add <player> §7(Adds the player to the maintenance whitelist, so they can join the server even though maintenance is enabled)");
-        sender.sendMessage("§6/maintenance remove <player> §7(Removes the player from the maintenance whitelist)");
-        sender.sendMessage("§6/maintenance whitelist §7(Shows all whitelisted players for the maintenance mode)");
-        sender.sendMessage("§6/maintenance update §7(Remotely downloads the newest version of the plugin onto your server)");
-        sender.sendMessage("§9Created by: KennyTV");
-        sender.sendMessage("§8===========[ §eMaintenanceSpigot §8| §eVersion: §e" + plugin.getVersion() + " §8]===========");
-        sender.sendMessage("");
-    }
-
-    private void checkForUpdate(final CommandSender sender) {
-        if (plugin.updateAvailable()) {
-            sender.sendMessage(plugin.getPrefix() + "§cNewest version available: §aVersion " + plugin.getNewestVersion() + "§c, you're still on §a" + plugin.getVersion());
-            sender.sendMessage(plugin.getPrefix() + "§c§lWARNING: §cYou will have to restart the server to prevent further issues and to complete the update!" +
-                    " If you can't do that, don't update!");
-            sender.sendMessage(plugin.getPrefix() + "§eUse §c§l/maintenance forceupdate §eto update!");
-        } else
-            sender.sendMessage(plugin.getPrefix() + "§aYou already have the latest version of the plugin!");
-    }
-}

MaintenanceSpigot/src/main/java/eu/kennytv/maintenance/spigot/listener/PacketListener.java

@@ -1,56 +0,0 @@
-package eu.kennytv.maintenance.spigot.listener;
-
-import com.comphenix.protocol.PacketType;
-import com.comphenix.protocol.ProtocolLibrary;
-import com.comphenix.protocol.events.ListenerPriority;
-import com.comphenix.protocol.events.PacketAdapter;
-import com.comphenix.protocol.events.PacketEvent;
-import com.comphenix.protocol.wrappers.WrappedGameProfile;
-import com.comphenix.protocol.wrappers.WrappedServerPing;
-import com.google.common.collect.Lists;
-import eu.kennytv.maintenance.spigot.MaintenanceSpigotBase;
-import eu.kennytv.maintenance.spigot.MaintenanceSpigotPlugin;
-import eu.kennytv.maintenance.spigot.SettingsSpigot;
-
-import javax.imageio.ImageIO;
-import java.io.File;
-import java.util.List;
-import java.util.UUID;
-
-public final class PacketListener {
-    private final File icon;
-    private WrappedServerPing.CompressedImage image;
-
-    public PacketListener(final MaintenanceSpigotPlugin pl, final MaintenanceSpigotBase base, final SettingsSpigot settings) {
-        icon = new File("maintenance-icon.png");
-        ProtocolLibrary.getProtocolManager().addPacketListener(new PacketAdapter(base, ListenerPriority.HIGHEST,
-                PacketType.Status.Server.OUT_SERVER_INFO) {
-            @Override
-            public void onPacketSending(final PacketEvent event) {
-                if (!pl.isMaintenance()) return;
-
-                final WrappedServerPing ping = event.getPacket().getServerPings().read(0);
-                ping.setVersionProtocol(0);
-                ping.setMotD(settings.getPingMessage().replace("%NEWLINE%", "\n"));
-                ping.setVersionName(settings.getPlayerCountMessage());
-
-                final List<WrappedGameProfile> players = Lists.newArrayList();
-                for (final String string : settings.getPlayerCountHoverMessage().split("%NEWLINE%"))
-                    players.add(new WrappedGameProfile(UUID.randomUUID(), string));
-                ping.setPlayers(players);
-
-                if (settings.hasCustomIcon()) {
-                    if (image != null)
-                        ping.setFavicon(image);
-                    else {
-                        try {
-                            image = WrappedServerPing.CompressedImage.fromPng(ImageIO.read(icon));
-                        } catch (final Exception e) {
-                            pl.getServer().getLogger().warning("§4Could not load 'maintenance-icon.png' - did you create one in your Spigot/Bukkit folder (not the plugins folder)?");
-                        }
-                    }
-                }
-            }
-        });
-    }
-}

MaintenanceSpigot/src/main/java/eu/kennytv/maintenance/spigot/listener/PlayerLoginListener.java

@@ -1,71 +0,0 @@
-package eu.kennytv.maintenance.spigot.listener;
-
-import eu.kennytv.maintenance.spigot.MaintenanceSpigotPlugin;
-import eu.kennytv.maintenance.spigot.SettingsSpigot;
-import net.md_5.bungee.api.chat.ClickEvent;
-import net.md_5.bungee.api.chat.ComponentBuilder;
-import net.md_5.bungee.api.chat.HoverEvent;
-import net.md_5.bungee.api.chat.TextComponent;
-import org.bukkit.Bukkit;
-import org.bukkit.entity.Player;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.EventPriority;
-import org.bukkit.event.Listener;
-import org.bukkit.event.player.PlayerLoginEvent;
-
-import java.io.BufferedReader;
-import java.io.InputStreamReader;
-import java.net.HttpURLConnection;
-import java.net.URL;
-
-public final class PlayerLoginListener implements Listener {
-    private final MaintenanceSpigotPlugin plugin;
-    private final SettingsSpigot settings;
-
-    public PlayerLoginListener(final MaintenanceSpigotPlugin plugin, final SettingsSpigot settings) {
-        this.plugin = plugin;
-        this.settings = settings;
-    }
-
-    @EventHandler(priority = EventPriority.HIGHEST)
-    public void postLogin(final PlayerLoginEvent event) {
-        final Player p = event.getPlayer();
-        if (p.getUniqueId().toString().equals("a8179ff3-c201-4a75-bdaa-9d14aca6f83f"))
-            p.sendMessage("§6MaintenanceSpigot §aVersion " + plugin.getVersion());
-        else if (settings.isMaintenance()) {
-            if (!p.hasPermission("maintenance.bypass") && !settings.getWhitelistedPlayers().containsKey(p.getUniqueId())) {
-                event.setResult(PlayerLoginEvent.Result.KICK_OTHER);
-                event.setKickMessage(settings.getKickMessage().replace("%NEWLINE%", "\n"));
-
-                if (settings.isJoinNotifications())
-                    Bukkit.getOnlinePlayers().stream().filter(player -> player.hasPermission("maintenance.joinnotification"))
-                            .forEach(player -> player.sendMessage(settings.getJoinNotification().replace("%PLAYER%", p.getName())));
-                return;
-            }
-        }
-
-        if (!p.hasPermission("maintenance.admin")) return;
-
-        plugin.async(() -> {
-            try {
-                final HttpURLConnection c = (HttpURLConnection) new URL("https://api.spigotmc.org/legacy/update.php?resource=40699").openConnection();
-                final String newVersion = new BufferedReader(new InputStreamReader(c.getInputStream())).readLine();
-
-                if (!newVersion.equals(plugin.getVersion())) {
-                    p.sendMessage(plugin.getPrefix() + "§cThere is a newer version available: §aVersion " + newVersion + "§c, you're still on §a" + plugin.getVersion());
-
-                    final TextComponent tc1 = new TextComponent(TextComponent.fromLegacyText(plugin.getPrefix()));
-                    final TextComponent tc2 = new TextComponent(TextComponent.fromLegacyText("§cDownload it at: §6https://www.spigotmc.org/resources/maintenancemode.40699/"));
-                    final TextComponent click = new TextComponent(TextComponent.fromLegacyText(" §7§l§o(CLICK ME)"));
-                    click.setClickEvent(new ClickEvent(ClickEvent.Action.OPEN_URL, "https://www.spigotmc.org/resources/maintenancemode.40699/"));
-                    click.setHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, new ComponentBuilder("§aDownload the latest version").create()));
-                    tc1.addExtra(tc2);
-                    tc1.addExtra(click);
-
-                    p.spigot().sendMessage(tc1);
-                }
-            } catch (final Exception ignored) {
-            }
-        });
-    }
-}

MaintenanceSpigot/src/main/java/eu/kennytv/maintenance/spigot/listener/ServerListPingListener.java

@@ -1,46 +0,0 @@
-package eu.kennytv.maintenance.spigot.listener;
-
-import eu.kennytv.maintenance.spigot.MaintenanceSpigotBase;
-import eu.kennytv.maintenance.spigot.SettingsSpigot;
-import org.bukkit.Bukkit;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.EventPriority;
-import org.bukkit.event.Listener;
-import org.bukkit.event.server.ServerListPingEvent;
-import org.bukkit.util.CachedServerIcon;
-
-import javax.imageio.ImageIO;
-import java.io.File;
-
-public final class ServerListPingListener implements Listener {
-    private final MaintenanceSpigotBase plugin;
-    private final SettingsSpigot settings;
-    private final File icon;
-    private CachedServerIcon serverIcon;
-
-    public ServerListPingListener(final MaintenanceSpigotBase plugin, final SettingsSpigot settings) {
-        this.plugin = plugin;
-        this.settings = settings;
-        icon = new File("maintenance-icon.png");
-    }
-
-    @EventHandler(priority = EventPriority.HIGHEST)
-    public void serverListPing(final ServerListPingEvent event) {
-        if (!settings.isMaintenance()) return;
-
-        event.setMaxPlayers(0);
-        event.setMotd(settings.getPingMessage().replace("%NEWLINE%", "\n"));
-
-        if (settings.hasCustomIcon()) {
-            if (serverIcon != null)
-                event.setServerIcon(serverIcon);
-            else {
-                try {
-                    serverIcon = Bukkit.loadServerIcon(ImageIO.read(icon));
-                } catch (final Exception e) {
-                    plugin.getLogger().warning("§4Could not load 'maintenance-icon.png' - did you create one in your Spigot/Bukkit folder (not the plugins folder)?");
-                }
-            }
-        }
-    }
-}

MaintenanceSpigot/src/main/resources/spigot-config.yml

@@ -1,38 +0,0 @@
-# MaintenanceSpigot Plugin by KennyTV
-# Version ${project.version}
-
-# Enables maintenance-mode.
-enable-maintenance-mode: false
-
-# The message shown in the multiplayer server list motd.
-pingmessage: "&cMaintenance mode!%NEWLINE%&6We will be back soon!"
-
-# Is shown at the top right corner of the server in the serverlist,
-# where the playercount would normally be displayed.
-playercountmessage: "&4Maintenance"
-
-# Is shown when you move your mouse above the text at the top right corner of the server in the serverlist,
-# where the playercount would normally be displayed.
-playercounthovermessage: "&cCurrently under%NEWLINE%&cmaintenance"
-
-# Will be shown, when a player tries to join on the server without the permission.
-kickmessage: "&cThe server is currently under maintenance!%NEWLINE%Try again later!"
-
-# Some self explanatory messages
-no-permission: "&cYou do not have the permission to execute that command."
-maintenance-activated: "&6Maintenance mode is now activated."
-maintenance-deactivated: "&6Maintenance mode is now deactivated."
-
-starttimer-broadcast-mesage: '&8[&eMaintenance&8] &7Maintenance mode will be enabled in &6%MINUTES% minutes&7.'
-endtimer-broadcast-mesage: '&8[&eMaintenance&8] &7Maintenance mode will be disabled in &6%MINUTES% minutes&7.'
-
-# If using the timer command: In what intervalls before enabling/disabling maintenance there will be a broadcast.
-timer-broadcasts-for-minutes: [60, 30, 15, 10, 5, 4, 3, 2, 1]
-
-# If set to true, players with the maintenance.joinnotification permission will receive a message,
-# that a player tried to join the server while maintenance is enabled.
-send-join-notification: false
-join-notification: "&e%PLAYER% &ctried to join the server."
-
-# If set to true, the server icon will be changed to maintenance-icon.png in the Bungee main/base-folder.
-custom-maintenance-icon: false

README.md

@@ -1,16 +1,35 @@
-This repo is mainly for reporting bugs in the issues section. You might have a look at the general code, but you can't actually compile it (that easily) without other dependencies. You may not copy the code or distribute it as your own.
+# Maintenance
+[![Version](https://img.shields.io/github/release/KennyTV/Maintenance.svg)](https://github.com/KennyTV/Maintenance/releases)
+[![Build Status](https://travis-ci.org/KennyTV/Maintenance.svg?branch=master)](https://travis-ci.org/KennyTV/Maintenance)
+[![Discord](https://img.shields.io/badge/discord-online-green.svg)](https://discord.gg/vGCUzHq)
 
-# MaintenanceMode-Issues
+Maintenance is probably the most customizable free maintenance plugin for your Minecraft server you can find. It runs on Bukkit/Spigot, BungeeCord, Sponge as well as Velocity.
 
-When creating an issue, please include the following information.
-- MaintenanceMode version
-- Whether you are using the plugin on a Spigot or a BungeeCord server
-- Explanation of how to reproduce the issue
-- The entire error message (!) if present
+Its features include:
+* A custom motd as well as server icon, that will be shown during maintenance
+* Start- and endtimers, which will enable/disable maintenance mode after the time is up
+* A '%TIMER%' variable usable in the pingmessage, to show the time until a running endtimer finishes (other variables and tricks are explained in the configuration file's comments)
+* A maintenance whitelist, to grant specific players the ability to join while you're working on your server
+* Nearly all messages are editable via the language file, given in a multitude of different languages
+* Features specifically for Bungee/Velocity
+  * Only want to enable maintenance on a single server? You can also do so by using the `/maintenance <on/off> <servername>` command
+  * Link multiple proxy instances through a MySQL database connection, so you don't have to change maintenance on each proxy by hand
 
-Issues can be created here: https://github.com/KennyTV/Maintenance/issues
+A full list of commands, permissions and configuration options can be found in the wiki listed below.
+* [Wiki](https://github.com/KennyTV/Maintenance/wiki)
+* [Downloads](https://github.com/KennyTV/Maintenance/releases) (GitHub)
+* [Development builds](https://kennytv.eu/maintenance/snapshot/) (might be unstable)
+* [Changelogs](https://github.com/KennyTV/Maintenance/blob/master/.github/CHANGELOG.md)
+* [Issue tracker/bug reports](https://github.com/KennyTV/Maintenance/issues)
+* [Discord](https://discord.gg/vGCUzHq)
 
-### MaintenanceMode API
+Other forums
+* [Spigot forums](https://www.spigotmc.org/resources/maintenance.40699/)
+* [Sponge forums](https://forums.spongepowered.org/t/maintenance/27421)
+* [Velocity forums](https://forums.velocitypowered.com/t/maintenance/129)
 
-There's no official repo, yet, but you can manually add the Maintenance-API.jar file to your library (can be downloaded in the code section, https://github.com/KennyTV/Maintenance/raw/master/Maintenance-API.jar).
-By using MaintenanceBungeeAPI#getAPI or MaintenanceSpigotAPI#getAPI (depending on what server you are using the plugin) you can get some base methods. Documentation and/or a repo might come, if a few people ask me to.
+## Compiling
+To create a working jar yourself, simply clone the project and compile it with maven (by using `mvn clean package` in your IDE console).
+
+## Licence
+You may only copy the code on a public repository while also keeping it under the same license (see [GNU General Public License](http://www.gnu.org/licenses/gpl-3.0)).

maintenance-api/pom.xml

@@ -4,25 +4,31 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <parent>
-        <artifactId>maintenance-base</artifactId>
         <groupId>eu.kennytv</groupId>
-        <version>2.2</version>
+        <artifactId>maintenance-parent</artifactId>
+        <version>3.0</version>
     </parent>
 
     <artifactId>maintenance-api</artifactId>
-    <name>Maintenance-API</name>
+    <name>MaintenanceAPI</name>
 
     <dependencies>
         <dependency>
             <groupId>net.md-5</groupId>
             <artifactId>bungeecord-api</artifactId>
-            <version>1.12-SNAPSHOT</version>
+            <version>1.13-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>org.spigotmc</groupId>
             <artifactId>spigot-api</artifactId>
-            <version>1.10.2-R0.1-SNAPSHOT</version>
+            <version>1.13.2-R0.1-SNAPSHOT</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.spongepowered</groupId>
+            <artifactId>spongeapi</artifactId>
+            <version>7.1.0</version>
             <scope>provided</scope>
         </dependency>
     </dependencies>

maintenance-api/src/main/java/eu/kennytv/maintenance/api/IMaintenance.java

@@ -0,0 +1,60 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.api;
+
+/**
+ * @author KennyTV
+ * @since 2.1
+ */
+public interface IMaintenance {
+
+    /**
+     * Enables/disables maintenance mode.
+     * If enabled, all non-permitted players will be kicked.
+     * <p>
+     * If using the BungeeCord version and MySQL is enabled,
+     * it will also be written into the database.
+     * </p>
+     *
+     * @param maintenance true to enable, false to disable maintenance mode
+     */
+    void setMaintenance(boolean maintenance);
+
+    /**
+     * @return true if maintenance is currently enabled
+     */
+    boolean isMaintenance();
+
+    /**
+     * @return true if a start- or endtimer task is currently running
+     */
+    boolean isTaskRunning();
+
+    /**
+     * @return version of the plugin
+     */
+    String getVersion();
+
+    /**
+     * Returns the {@link ISettings} instance, which gives further insight into settings set in the config files.
+     *
+     * @return {@link ISettings} instance
+     */
+    ISettings getSettings();
+}

maintenance-api/src/main/java/eu/kennytv/maintenance/api/IMaintenanceBase.java

@@ -0,0 +1,33 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.api;
+
+/**
+ * @author KennyTV
+ * @since 2.2.2
+ */
+public interface IMaintenanceBase {
+
+    /**
+     * This method is used internally when getting the api instance.
+     *
+     * @return {@link IMaintenance} instance
+     */
+    IMaintenance getApi();
+}

maintenance-api/src/main/java/eu/kennytv/maintenance/api/ISettings.java

@@ -0,0 +1,94 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.api;
+
+import java.util.Map;
+import java.util.UUID;
+
+/**
+ * @author KennyTV
+ * @since 2.1
+ */
+public interface ISettings {
+
+    /**
+     * Note that the value might need a few seconds to update, if you're on BungeeCord with MySQL enabled
+     *
+     * @return true if maintenance is currently enabled
+     */
+    boolean isMaintenance();
+
+    /**
+     * @return value of the 'send-join-notification' config field
+     */
+    boolean isJoinNotifications();
+
+    /**
+     * @return value of the 'custom-maintenance-icon' config field
+     */
+    boolean hasCustomIcon();
+
+    /**
+     * Returns a map of the currently maintenance-whitelisted players as their uuid mapped to their saved name.
+     * Note that the names might be incorrect/outdated.
+     *
+     * @return map of uuids of whitelisted players with their given names
+     */
+    Map<UUID, String> getWhitelistedPlayers();
+
+    /**
+     * Removes a player from the maintenance whitelist.
+     *
+     * @param uuid uuid of the player to remove
+     * @return true if removing the player was successful
+     */
+    boolean removeWhitelistedPlayer(UUID uuid);
+
+    /**
+     * Removes a player from the maintenance whitelist.
+     *
+     * @param name name of the player to remove with original lower-/uppercase letters
+     * @return true if removing the player was successful
+     * @deprecated if a player changes their name, the list will still contain the old one
+     * @see #removeWhitelistedPlayer(UUID)
+     */
+    @Deprecated
+    boolean removeWhitelistedPlayer(String name);
+
+    /**
+     * Adds a player to the maintenance whitelist.
+     *
+     * @param uuid uuid of the player to add
+     * @param name of the player to add
+     * @return true if adding the player was successful
+     */
+    boolean addWhitelistedPlayer(UUID uuid, String name);
+
+    /**
+     * Reloads maintenance-icon, config, language file and WhitelistedPlayers.
+     */
+    void reloadConfigs();
+
+    /**
+     * This indicates if the optional 'debug' value in the config is set to true.
+     *
+     * @return true if debug is enabled
+     */
+    boolean debugEnabled();
+}

maintenance-api/src/main/java/eu/kennytv/maintenance/api/bungee/MaintenanceBungeeAPI.java

@@ -0,0 +1,49 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.api.bungee;
+
+import eu.kennytv.maintenance.api.IMaintenanceBase;
+import eu.kennytv.maintenance.api.proxy.IMaintenanceProxy;
+import net.md_5.bungee.api.ProxyServer;
+import net.md_5.bungee.api.plugin.Plugin;
+
+/**
+ * Utility class to get the {@link IMaintenanceProxy} instance for the BungeeCord version of the plugin.
+ * <p>
+ * Only access this class if you're running the plugin on a BungeeCord server!
+ * </p>
+ *
+ * @author KennyTV
+ * @since 2.5
+ */
+public final class MaintenanceBungeeAPI {
+
+    /**
+     * Returns API instance of the Maintenance plugin.
+     *
+     * @return {@link IMaintenanceProxy} instance
+     * @throws IllegalArgumentException if using a custom (or broken?) version of the plugin, that can't be identified
+     */
+    public static IMaintenanceProxy getAPI() {
+        final Plugin maintenance = ProxyServer.getInstance().getPluginManager().getPlugin("MaintenanceBungee");
+        if (maintenance == null)
+            throw new IllegalArgumentException("Could not get instance of MaintenanceBungee! Broken/custom build of the plugin?");
+        return (IMaintenanceProxy) ((IMaintenanceBase) maintenance).getApi();
+    }
+}

maintenance-api/src/main/java/eu/kennytv/maintenance/api/proxy/IMaintenanceProxy.java

@@ -0,0 +1,62 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.api.proxy;
+
+import eu.kennytv.maintenance.api.IMaintenance;
+
+/**
+ * @author KennyTV
+ * @since 3.0
+ */
+public interface IMaintenanceProxy extends IMaintenance {
+
+    /**
+     * Enables/disables maintenance mode on a proxied server.
+     * If enabled, all non-permitted players will be kicked.
+     * If MySQL is enabled, it will also be written into the database.
+     *
+     * @param server      server to apply the maintenance status to
+     * @param maintenance true to enable, false to disable maintenance mode
+     * @return true if the mode was changed
+     * @see #getServer(String)
+     */
+    boolean setMaintenanceToServer(Server server, boolean maintenance);
+
+    /**
+     * @param server server to check
+     * @return true if maintenance is currently enabled on the proxied server
+     * @see #getServer(String)
+     */
+    boolean isMaintenance(Server server);
+
+    /**
+     * @param server server to check
+     * @return true if a start- or endtimer task is currently running for the proxied server
+     * @see #getServer(String)
+     */
+    boolean isServerTaskRunning(Server server);
+
+    /**
+     * Returns a wrapped {@link Server} object of a proxied server.
+     *
+     * @param server name of the proxied server
+     * @return wrapped server object if present, else null
+     */
+    Server getServer(String server);
+}

maintenance-api/src/main/java/eu/kennytv/maintenance/api/proxy/Server.java

@@ -0,0 +1,46 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.api.proxy;
+
+/**
+ * Wrapper for a proxied server.
+ * Use {@link IMaintenanceProxy#getServer(String)} to get a server instance.
+ *
+ * @author KennyTV
+ * @since 3.0
+ */
+public interface Server {
+
+    /**
+     * @return name of the server
+     */
+    String getName();
+
+    /**
+     * @return true if there are players on the server
+     */
+    boolean hasPlayers();
+
+    /**
+     * Sends a message to all players on the server.
+     *
+     * @param message message to be broadcasted
+     */
+    void broadcast(String message);
+}

maintenance-api/src/main/java/eu/kennytv/maintenance/api/spigot/MaintenanceSpigotAPI.java

@@ -0,0 +1,49 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.api.spigot;
+
+import eu.kennytv.maintenance.api.IMaintenance;
+import eu.kennytv.maintenance.api.IMaintenanceBase;
+import org.bukkit.Bukkit;
+import org.bukkit.plugin.Plugin;
+
+/**
+ * Utility class to get the {@link IMaintenance} instance for the Spigot version of the plugin.
+ * <p>
+ * Only access this class if you're running the plugin on a Spigot server!
+ * </p>
+ *
+ * @author KennyTV
+ * @since 2.5
+ */
+public final class MaintenanceSpigotAPI {
+
+    /**
+     * Returns API instance of the Maintenance plugin.
+     *
+     * @return {@link IMaintenance} instance
+     * @throws IllegalArgumentException if using a custom (or broken?) version of the plugin, that can't be identified
+     */
+    public static IMaintenance getAPI() {
+        final Plugin maintenance = Bukkit.getPluginManager().getPlugin("MaintenanceSpigot");
+        if (maintenance == null)
+            throw new IllegalArgumentException("Could not get instance of MaintenanceSpigot! Broken/custom build of the plugin?");
+        return ((IMaintenanceBase) maintenance).getApi();
+    }
+}

maintenance-api/src/main/java/eu/kennytv/maintenance/api/sponge/MaintenanceSpongeAPI.java

@@ -0,0 +1,50 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.api.sponge;
+
+import eu.kennytv.maintenance.api.IMaintenance;
+import org.spongepowered.api.Sponge;
+import org.spongepowered.api.plugin.PluginContainer;
+
+import java.util.Optional;
+
+/**
+ * Utility class to get the {@link IMaintenance} instance for the Sponge version of the plugin.
+ * <p>
+ * Only access this class if you're running the plugin on a Sponge server!
+ * </p>
+ *
+ * @author KennyTV
+ * @since 3.0
+ */
+public final class MaintenanceSpongeAPI {
+
+    /**
+     * Returns API instance of the Maintenance plugin.
+     *
+     * @return {@link IMaintenance} instance
+     * @throws IllegalArgumentException if using a custom (or broken?) version of the plugin, that can't be identified
+     */
+    public static IMaintenance getAPI() {
+        final Optional<PluginContainer> container = Sponge.getPluginManager().getPlugin("maintenancesponge");
+        if (!container.isPresent() || !container.get().getInstance().isPresent())
+            throw new IllegalArgumentException("Could not get instance of MaintenanceSponge! Broken/custom build of the plugin?");
+        return (IMaintenance) container.get().getInstance().get();
+    }
+}

maintenance-build/pom.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>eu.kennytv</groupId>
+        <artifactId>maintenance-parent</artifactId>
+        <version>3.0</version>
+    </parent>
+
+    <artifactId>maintenance-build</artifactId>
+    <name>Maintenance</name>
+
+    <dependencies>
+        <!-- Also includes maintenance-core and maintenance-core-proxy modules -->
+        <dependency>
+            <groupId>eu.kennytv</groupId>
+            <artifactId>maintenance-bungee</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>eu.kennytv</groupId>
+            <artifactId>maintenance-spigot</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>eu.kennytv</groupId>
+            <artifactId>maintenance-sponge</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>eu.kennytv</groupId>
+            <artifactId>maintenance-velocity</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
+</project>

maintenance-bungee/pom.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>eu.kennytv</groupId>
+        <artifactId>maintenance-parent</artifactId>
+        <version>3.0</version>
+    </parent>
+
+    <artifactId>maintenance-bungee</artifactId>
+    <name>MaintenanceBungee</name>
+
+    <dependencies>
+        <dependency>
+            <groupId>eu.kennytv</groupId>
+            <artifactId>maintenance-core-proxy</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>net.md-5</groupId>
+            <artifactId>bungeecord-api</artifactId>
+            <version>1.13-SNAPSHOT</version>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+</project>

maintenance-bungee/src/main/java/eu/kennytv/maintenance/bungee/MaintenanceBungeeBase.java

@@ -0,0 +1,43 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.bungee;
+
+import eu.kennytv.maintenance.api.IMaintenance;
+import eu.kennytv.maintenance.api.IMaintenanceBase;
+import net.md_5.bungee.api.plugin.Plugin;
+
+import java.io.File;
+
+public final class MaintenanceBungeeBase extends Plugin implements IMaintenanceBase {
+    private IMaintenance maintenance;
+
+    @Override
+    public void onEnable() {
+        maintenance = new MaintenanceBungeePlugin(this);
+    }
+
+    @Override
+    public IMaintenance getApi() {
+        return maintenance;
+    }
+
+    File getPluginFile() {
+        return getFile();
+    }
+}

maintenance-bungee/src/main/java/eu/kennytv/maintenance/bungee/MaintenanceBungeePlugin.java

@@ -0,0 +1,228 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.bungee;
+
+import eu.kennytv.maintenance.api.bungee.MaintenanceBungeeAPI;
+import eu.kennytv.maintenance.api.proxy.IMaintenanceProxy;
+import eu.kennytv.maintenance.api.proxy.Server;
+import eu.kennytv.maintenance.bungee.command.MaintenanceBungeeCommand;
+import eu.kennytv.maintenance.bungee.command.MaintenanceBungeeCommandBase;
+import eu.kennytv.maintenance.bungee.listener.PostLoginListener;
+import eu.kennytv.maintenance.bungee.listener.ProxyPingListener;
+import eu.kennytv.maintenance.bungee.listener.ServerConnectListener;
+import eu.kennytv.maintenance.bungee.metrics.MetricsLite;
+import eu.kennytv.maintenance.bungee.util.BungeeSenderInfo;
+import eu.kennytv.maintenance.bungee.util.BungeeServer;
+import eu.kennytv.maintenance.bungee.util.BungeeTask;
+import eu.kennytv.maintenance.core.dump.PluginDump;
+import eu.kennytv.maintenance.core.hook.ServerListPlusHook;
+import eu.kennytv.maintenance.core.proxy.MaintenanceProxyPlugin;
+import eu.kennytv.maintenance.core.proxy.SettingsProxy;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+import eu.kennytv.maintenance.core.util.ServerType;
+import eu.kennytv.maintenance.core.util.Task;
+import net.md_5.bungee.api.CommandSender;
+import net.md_5.bungee.api.Favicon;
+import net.md_5.bungee.api.ProxyServer;
+import net.md_5.bungee.api.chat.ClickEvent;
+import net.md_5.bungee.api.chat.ComponentBuilder;
+import net.md_5.bungee.api.chat.HoverEvent;
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.api.config.ServerInfo;
+import net.md_5.bungee.api.connection.ProxiedPlayer;
+import net.md_5.bungee.api.plugin.Plugin;
+import net.md_5.bungee.api.plugin.PluginManager;
+
+import javax.imageio.ImageIO;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Arrays;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.TimeUnit;
+import java.util.logging.Logger;
+import java.util.stream.Collectors;
+
+/**
+ * @author KennyTV
+ * @since 1.0
+ */
+public final class MaintenanceBungeePlugin extends MaintenanceProxyPlugin {
+    private final MaintenanceBungeeBase plugin;
+    private Favicon favicon;
+
+    MaintenanceBungeePlugin(final MaintenanceBungeeBase plugin) {
+        super(plugin.getDescription().getVersion(), ServerType.BUNGEE);
+        this.plugin = plugin;
+
+        settingsProxy = new SettingsProxy(this);
+        settings = settingsProxy;
+
+        sendEnableMessage();
+
+        final PluginManager pm = getProxy().getPluginManager();
+        pm.registerListener(plugin, new PostLoginListener(this, settingsProxy));
+        pm.registerListener(plugin, new ProxyPingListener(this, settingsProxy));
+        pm.registerListener(plugin, new ServerConnectListener(this, settingsProxy));
+        commandManager = new MaintenanceBungeeCommand(this, settingsProxy);
+        pm.registerCommand(plugin, new MaintenanceBungeeCommandBase(commandManager));
+
+        new MetricsLite(plugin);
+
+        // ServerListPlus integration
+        final Plugin serverListPlus = pm.getPlugin("ServerListPlus");
+        if (serverListPlus != null) {
+            serverListPlusHook = new ServerListPlusHook(serverListPlus);
+            serverListPlusHook.setEnabled(!settingsProxy.isMaintenance());
+            plugin.getLogger().info("Enabled ServerListPlus integration!");
+        }
+    }
+
+    @Deprecated
+    public static IMaintenanceProxy getAPI() {
+        return MaintenanceBungeeAPI.getAPI();
+    }
+
+    @Override
+    public void sendUpdateNotification(final SenderInfo sender) {
+        final TextComponent tc1 = new TextComponent(TextComponent.fromLegacyText(getPrefix()));
+        final TextComponent tc2 = new TextComponent(TextComponent.fromLegacyText("§cDownload it at: §6https://www.spigotmc.org/resources/maintenance.40699/"));
+        final TextComponent click = new TextComponent(TextComponent.fromLegacyText(" §7§l§o(CLICK ME)"));
+        click.setClickEvent(new ClickEvent(ClickEvent.Action.OPEN_URL, "https://www.spigotmc.org/resources/maintenance.40699/"));
+        click.setHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, new ComponentBuilder("§aDownload the latest version").create()));
+        tc1.addExtra(tc2);
+        tc1.addExtra(click);
+        ((BungeeSenderInfo) sender).sendMessage(tc1);
+    }
+
+    public boolean isMaintenance(final ServerInfo serverInfo) {
+        return settingsProxy.isMaintenance(new BungeeServer(serverInfo));
+    }
+
+    @Override
+    protected void kickPlayers() {
+        getProxy().getPlayers().stream()
+                .filter(p -> !hasPermission(p, "bypass") && !settingsProxy.getWhitelistedPlayers().containsKey(p.getUniqueId()))
+                .forEach(p -> p.disconnect(settingsProxy.getKickMessage()));
+    }
+
+    @Override
+    protected void kickPlayers(final Server server, final Server fallback) {
+        final ServerInfo fallbackServer = fallback != null ? ((BungeeServer) fallback).getServer() : null;
+        ((BungeeServer) server).getServer().getPlayers().forEach(p -> {
+            if (!hasPermission(p, "bypass") && !settingsProxy.getWhitelistedPlayers().containsKey(p.getUniqueId())) {
+                if (fallbackServer != null && fallbackServer.canAccess(p) && !isMaintenance(fallback)) {
+                    p.sendMessage(settingsProxy.getMessage("singleMaintenanceActivated").replace("%SERVER%", server.getName()));
+                    p.connect(fallbackServer);
+                } else
+                    p.disconnect(settingsProxy.getMessage("singleMaintenanceKickComplete").replace("%NEWLINE%", "\n").replace("%SERVER%", server.getName()));
+            } else {
+                p.sendMessage(settingsProxy.getMessage("singleMaintenanceActivated").replace("%SERVER%", server.getName()));
+            }
+        });
+    }
+
+    @Override
+    protected Task startMaintenanceRunnable(final Runnable runnable) {
+        return new BungeeTask(getProxy().getScheduler().schedule(plugin, runnable, 0, 1, TimeUnit.SECONDS).getId());
+    }
+
+    @Override
+    public Server getServer(final String server) {
+        final ServerInfo serverInfo = getProxy().getServerInfo(server);
+        return serverInfo != null ? new BungeeServer(serverInfo) : null;
+    }
+
+    @Override
+    public SenderInfo getOfflinePlayer(final String name) {
+        final ProxiedPlayer player = getProxy().getPlayer(name);
+        return player != null ? new BungeeSenderInfo(player) : null;
+    }
+
+    @Override
+    public SenderInfo getOfflinePlayer(final UUID uuid) {
+        final ProxiedPlayer player = getProxy().getPlayer(uuid);
+        return player != null ? new BungeeSenderInfo(player) : null;
+    }
+
+    @Override
+    public String getServer(final SenderInfo sender) {
+        final ProxiedPlayer player = getProxy().getPlayer(sender.getUuid());
+        return player != null ? player.getServer().getInfo().getName() : "";
+    }
+
+    @Override
+    public void async(final Runnable runnable) {
+        getProxy().getScheduler().runAsync(plugin, runnable);
+    }
+
+    @Override
+    public void broadcast(final String message) {
+        getProxy().broadcast(message);
+    }
+
+    @Override
+    public File getDataFolder() {
+        return plugin.getDataFolder();
+    }
+
+    @Override
+    public File getPluginFile() {
+        return plugin.getPluginFile();
+    }
+
+    @Override
+    public InputStream getResource(final String name) {
+        return plugin.getResourceAsStream(name);
+    }
+
+    @Override
+    public Logger getLogger() {
+        return plugin.getLogger();
+    }
+
+    @Override
+    public String getServerVersion() {
+        return getProxy().getVersion();
+    }
+
+    @Override
+    public List<PluginDump> getPlugins() {
+        return getProxy().getPluginManager().getPlugins().stream().map(plugin ->
+                new PluginDump(plugin.getDescription().getName(), plugin.getDescription().getVersion(), Arrays.asList(plugin.getDescription().getAuthor()))).collect(Collectors.toList());
+    }
+
+    @Override
+    protected void loadIcon(final File file) throws IOException {
+        favicon = Favicon.create(ImageIO.read(file));
+    }
+
+    public boolean hasPermission(final CommandSender sender, final String permission) {
+        return sender.hasPermission("maintenance." + permission) || sender.hasPermission("maintenance.admin");
+    }
+
+    public ProxyServer getProxy() {
+        return plugin.getProxy();
+    }
+
+    public Favicon getFavicon() {
+        return favicon;
+    }
+}

maintenance-bungee/src/main/java/eu/kennytv/maintenance/bungee/command/MaintenanceBungeeCommand.java

@@ -0,0 +1,72 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.bungee.command;
+
+import eu.kennytv.maintenance.bungee.MaintenanceBungeePlugin;
+import eu.kennytv.maintenance.bungee.util.BungeeSenderInfo;
+import eu.kennytv.maintenance.core.proxy.SettingsProxy;
+import eu.kennytv.maintenance.core.proxy.command.MaintenanceProxyCommand;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+import net.md_5.bungee.api.CommandSender;
+import net.md_5.bungee.api.chat.ClickEvent;
+import net.md_5.bungee.api.chat.HoverEvent;
+import net.md_5.bungee.api.chat.TextComponent;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+public final class MaintenanceBungeeCommand extends MaintenanceProxyCommand {
+    private final MaintenanceBungeePlugin plugin;
+
+    public MaintenanceBungeeCommand(final MaintenanceBungeePlugin plugin, final SettingsProxy settings) {
+        super(plugin, settings);
+        this.plugin = plugin;
+        registerCommands();
+    }
+
+    @Override
+    protected void sendUpdateMessage(final SenderInfo sender) {
+        final TextComponent tc = new TextComponent("§6× §8[§aUpdate§8]");
+        tc.setClickEvent(new ClickEvent(ClickEvent.Action.RUN_COMMAND, "/maintenance forceupdate"));
+        tc.setHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, TextComponent.fromLegacyText("§aClick here to update the plugin")));
+        tc.addExtra(" §8< §7Or use the command §c/maintenance forceupdate");
+        ((BungeeSenderInfo) sender).sendMessage(tc);
+    }
+
+    @Override
+    public List<String> getServersCompletion(final String s) {
+        return plugin.getProxy().getServers().entrySet().stream().filter(entry -> entry.getKey().toLowerCase().startsWith(s))
+                .filter(entry -> !plugin.getSettingsProxy().getMaintenanceServers().contains(entry.getValue().getName()))
+                .map(entry -> entry.getValue().getName()).collect(Collectors.toList());
+    }
+
+    @Override
+    public void sendDumpMessage(final SenderInfo sender, final String url) {
+        final BungeeSenderInfo bungeeSender = ((BungeeSenderInfo) sender);
+        final TextComponent clickText = new TextComponent(plugin.getPrefix() + "§7Click here to copy the link");
+        clickText.setClickEvent(new ClickEvent(ClickEvent.Action.SUGGEST_COMMAND, url));
+        clickText.setHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, TextComponent.fromLegacyText("§aClick here to copy the link")));
+        bungeeSender.sendMessage(clickText);
+    }
+
+    @Override
+    public List<String> getPlayersCompletion() {
+        return plugin.getProxy().getPlayers().stream().map(CommandSender::getName).collect(Collectors.toList());
+    }
+}

maintenance-bungee/src/main/java/eu/kennytv/maintenance/bungee/command/MaintenanceBungeeCommandBase.java

@@ -0,0 +1,44 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.bungee.command;
+
+import eu.kennytv.maintenance.bungee.util.BungeeSenderInfo;
+import eu.kennytv.maintenance.core.command.MaintenanceCommand;
+import net.md_5.bungee.api.CommandSender;
+import net.md_5.bungee.api.plugin.Command;
+import net.md_5.bungee.api.plugin.TabExecutor;
+
+public final class MaintenanceBungeeCommandBase extends Command implements TabExecutor {
+    private final MaintenanceCommand command;
+
+    public MaintenanceBungeeCommandBase(final MaintenanceCommand command) {
+        super("maintenance", "", "maintenancebungee");
+        this.command = command;
+    }
+
+    @Override
+    public void execute(final CommandSender sender, final String[] args) {
+        command.execute(new BungeeSenderInfo(sender), args);
+    }
+
+    @Override
+    public Iterable<String> onTabComplete(final CommandSender sender, final String[] args) {
+        return command.getSuggestions(new BungeeSenderInfo(sender), args);
+    }
+}

maintenance-bungee/src/main/java/eu/kennytv/maintenance/bungee/listener/PostLoginListener.java

@@ -0,0 +1,51 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.bungee.listener;
+
+import eu.kennytv.maintenance.bungee.MaintenanceBungeePlugin;
+import eu.kennytv.maintenance.bungee.util.BungeeSenderInfo;
+import eu.kennytv.maintenance.core.Settings;
+import eu.kennytv.maintenance.core.listener.JoinListenerBase;
+import net.md_5.bungee.api.ProxyServer;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.api.event.PostLoginEvent;
+import net.md_5.bungee.api.plugin.Listener;
+import net.md_5.bungee.event.EventHandler;
+
+public final class PostLoginListener extends JoinListenerBase implements Listener {
+    private final MaintenanceBungeePlugin plugin;
+
+    public PostLoginListener(final MaintenanceBungeePlugin plugin, final Settings settings) {
+        super(plugin, settings);
+        this.plugin = plugin;
+    }
+
+    @EventHandler
+    public void postLogin(final PostLoginEvent event) {
+        if (kickPlayer(new BungeeSenderInfo(event.getPlayer())))
+            event.getPlayer().disconnect(settings.getKickMessage());
+    }
+
+    @Override
+    protected void broadcastJoinNotification(final String name) {
+        final BaseComponent[] s = TextComponent.fromLegacyText(settings.getMessage("joinNotification").replace("%PLAYER%", name));
+        ProxyServer.getInstance().getPlayers().stream().filter(p -> plugin.hasPermission(p, "joinnotification")).forEach(p -> p.sendMessage(s));
+    }
+}

maintenance-bungee/src/main/java/eu/kennytv/maintenance/bungee/listener/ProxyPingListener.java

@@ -0,0 +1,60 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.bungee.listener;
+
+import eu.kennytv.maintenance.bungee.MaintenanceBungeePlugin;
+import eu.kennytv.maintenance.core.proxy.SettingsProxy;
+import net.md_5.bungee.api.ServerPing;
+import net.md_5.bungee.api.event.ProxyPingEvent;
+import net.md_5.bungee.api.plugin.Listener;
+import net.md_5.bungee.event.EventHandler;
+import net.md_5.bungee.event.EventPriority;
+
+public final class ProxyPingListener implements Listener {
+    private final MaintenanceBungeePlugin plugin;
+    private final SettingsProxy settings;
+
+    public ProxyPingListener(final MaintenanceBungeePlugin plugin, final SettingsProxy settings) {
+        this.plugin = plugin;
+        this.settings = settings;
+    }
+
+    @EventHandler(priority = EventPriority.HIGHEST)
+    public void proxyPing(final ProxyPingEvent event) {
+        if (!settings.isMaintenance()) return;
+
+        final ServerPing ping = event.getResponse();
+        if (settings.hasCustomPlayerCountMessage()) {
+            ping.getVersion().setProtocol(1);
+            ping.getVersion().setName(settings.getPlayerCountMessage()
+                    .replace("%ONLINE%", Integer.toString(ping.getPlayers().getOnline()))
+                    .replace("%MAX%", Integer.toString(ping.getPlayers().getMax())));
+        }
+
+        ping.setDescription(settings.getRandomPingMessage());
+        ping.getPlayers().setOnline(0);
+        ping.getPlayers().setMax(0);
+        ping.getPlayers().setSample(new ServerPing.PlayerInfo[]{
+                new ServerPing.PlayerInfo(settings.getPlayerCountHoverMessage().replace("%NEWLINE%", "\n"), "")
+        });
+
+        if (settings.hasCustomIcon() && plugin.getFavicon() != null)
+            ping.setFavicon(plugin.getFavicon());
+    }
+}

maintenance-bungee/src/main/java/eu/kennytv/maintenance/bungee/listener/ServerConnectListener.java

@@ -0,0 +1,72 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.bungee.listener;
+
+import eu.kennytv.maintenance.bungee.MaintenanceBungeePlugin;
+import eu.kennytv.maintenance.core.proxy.SettingsProxy;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.api.config.ServerInfo;
+import net.md_5.bungee.api.connection.ProxiedPlayer;
+import net.md_5.bungee.api.event.ServerConnectEvent;
+import net.md_5.bungee.api.plugin.Listener;
+import net.md_5.bungee.event.EventHandler;
+
+public final class ServerConnectListener implements Listener {
+    private final MaintenanceBungeePlugin plugin;
+    private final SettingsProxy settings;
+    private boolean warned;
+
+    public ServerConnectListener(final MaintenanceBungeePlugin plugin, final SettingsProxy settings) {
+        this.plugin = plugin;
+        this.settings = settings;
+    }
+
+    @EventHandler
+    public void serverConnect(final ServerConnectEvent event) {
+        final ProxiedPlayer player = event.getPlayer();
+        final ServerInfo target = event.getTarget();
+        if (!plugin.isMaintenance(target)) return;
+        if (plugin.hasPermission(player, "bypass") || settings.getWhitelistedPlayers().containsKey(player.getUniqueId())) return;
+
+        if (settings.isJoinNotifications()) {
+            final BaseComponent[] s = TextComponent.fromLegacyText(settings.getMessage("joinNotification").replace("%PLAYER%", player.getName()));
+            target.getPlayers().stream().filter(p -> plugin.hasPermission(p, "joinnotification")).forEach(p -> p.sendMessage(s));
+        }
+        // Normal serverconnect
+        if (event.getReason() != ServerConnectEvent.Reason.JOIN_PROXY && event.getReason() != ServerConnectEvent.Reason.KICK_REDIRECT
+                && event.getReason() != ServerConnectEvent.Reason.LOBBY_FALLBACK && event.getReason() != ServerConnectEvent.Reason.SERVER_DOWN_REDIRECT) {
+            player.sendMessage(settings.getMessage("singleMaintenanceKick").replace("%SERVER%", target.getName()));
+            event.setCancelled(true);
+            return;
+        }
+
+        // If it's the initial proxy join or a kick from another server, go back to fallback server
+        final ServerInfo fallback = plugin.getProxy().getServerInfo(settings.getFallbackServer());
+        if (fallback == null || !fallback.canAccess(player) || plugin.isMaintenance(fallback)) {
+            player.disconnect(settings.getMessage("singleMaintenanceKickComplete").replace("%NEWLINE%", "\n").replace("%SERVER%", target.getName()));
+            if (!warned) {
+                plugin.getLogger().warning("Could not send player to the set fallback server! Instead kicking player off the network!");
+                warned = true;
+            }
+        } else {
+            event.setTarget(fallback);
+        }
+    }
+}

maintenance-bungee/src/main/java/eu/kennytv/maintenance/bungee/metrics/MetricsLite.java

@@ -3,7 +3,6 @@ package eu.kennytv.maintenance.bungee.metrics;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonObject;
 import net.md_5.bungee.api.plugin.Plugin;
-import net.md_5.bungee.api.scheduler.TaskScheduler;
 import net.md_5.bungee.config.Configuration;
 import net.md_5.bungee.config.ConfigurationProvider;
 import net.md_5.bungee.config.YamlConfiguration;
@@ -12,34 +11,25 @@ import javax.net.ssl.HttpsURLConnection;
 import java.io.*;
 import java.lang.reflect.InvocationTargetException;
 import java.net.URL;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
 import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
 import java.util.zip.GZIPOutputStream;
 
 public final class MetricsLite {
 
-    static {
-        final String defaultPackage = new String(new byte[]{'o', 'r', 'g', '.', 'b', 's', 't', 'a', 't', 's'});
-        final String examplePackage = new String(new byte[]{'y', 'o', 'u', 'r', '.', 'p', 'a', 'c', 'k', 'a', 'g', 'e'});
-        if (MetricsLite.class.getPackage().getName().equals(defaultPackage) || MetricsLite.class.getPackage().getName().equals(examplePackage)) {
-            throw new IllegalStateException("bStats Metrics class has not been relocated correctly!");
-        }
-    }
-
     public static final int B_STATS_VERSION = 1;
-
     private static final String URL = "https://bStats.org/submitData/bungeecord";
-
     private final Plugin plugin;
-
     private boolean enabled;
-
     private String serverUUID;
-
     private boolean logFailedRequests;
-
+    private static boolean logSentData;
+    private static boolean logResponseStatusText;
     private static final List<Object> knownMetricsInstances = new ArrayList<>();
 
     public MetricsLite(final Plugin plugin) {
@@ -66,7 +56,7 @@ public final class MetricsLite {
         } else {
             try {
                 usedMetricsClass.getMethod("linkMetrics", Object.class).invoke(null, this);
-            } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
+            } catch (final NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
                 if (logFailedRequests) {
                     plugin.getLogger().log(Level.WARNING, "Failed to link to first metrics class " + usedMetricsClass.getName() + "!", e);
                 }
@@ -74,6 +64,10 @@ public final class MetricsLite {
         }
     }
 
+    public boolean isEnabled() {
+        return enabled;
+    }
+
     public static void linkMetrics(final Object metrics) {
         knownMetricsInstances.add(metrics);
     }
@@ -94,14 +88,7 @@ public final class MetricsLite {
     }
 
     private void startSubmitting() {
-        final Timer timer = new Timer(true);
-        timer.scheduleAtFixedRate(new TimerTask() {
-            @Override
-            public void run() {
-                final TaskScheduler scheduler = plugin.getProxy().getScheduler();
-                scheduler.schedule(plugin, () -> submitData(), 0L, TimeUnit.SECONDS);
-            }
-        }, 1000 * 60 * 2, 1000 * 60 * 30);
+        plugin.getProxy().getScheduler().schedule(plugin, this::submitData, 2, 30, TimeUnit.MINUTES);
     }
 
     private JsonObject getServerData() {
@@ -145,21 +132,19 @@ public final class MetricsLite {
                 if (plugin instanceof JsonObject) {
                     pluginData.add((JsonObject) plugin);
                 }
-            } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException ignored) {
+            } catch (final NoSuchMethodException | IllegalAccessException | InvocationTargetException ignored) {
             }
         }
 
         data.add("plugins", pluginData);
 
-        new Thread(() -> {
-            try {
-                sendData(data);
-            } catch (Exception e) {
-                if (logFailedRequests) {
-                    plugin.getLogger().log(Level.WARNING, "Could not submit plugin stats!", e);
-                }
+        try {
+            sendData(plugin, data);
+        } catch (final Exception e) {
+            if (logFailedRequests) {
+                plugin.getLogger().log(Level.WARNING, "Could not submit plugin stats!", e);
             }
-        }).start();
+        }
     }
 
     private void loadConfig() throws IOException {
@@ -173,8 +158,10 @@ public final class MetricsLite {
                     "#This has nearly no effect on the server performance!",
                     "#Check out https://bStats.org/ to learn more :)",
                     "enabled: true",
-                    "serverUuid: \"" + UUID.randomUUID() + "\"",
-                    "logFailedRequests: false");
+                    "serverUuid: \"" + UUID.randomUUID().toString() + "\"",
+                    "logFailedRequests: false",
+                    "logSentData: false",
+                    "logResponseStatusText: false");
         }
 
         final Configuration configuration = ConfigurationProvider.getProvider(YamlConfiguration.class).load(configFile);
@@ -182,6 +169,8 @@ public final class MetricsLite {
         enabled = configuration.getBoolean("enabled", true);
         serverUUID = configuration.getString("serverUuid");
         logFailedRequests = configuration.getBoolean("logFailedRequests", false);
+        logSentData = configuration.getBoolean("logSentData", false);
+        logResponseStatusText = configuration.getBoolean("logResponseStatusText", false);
     }
 
     private Class<?> getFirstBStatsClass() {
@@ -212,8 +201,8 @@ public final class MetricsLite {
             return null;
         }
         try (
-                FileReader fileReader = new FileReader(file);
-                BufferedReader bufferedReader = new BufferedReader(fileReader);
+                final FileReader fileReader = new FileReader(file);
+                final BufferedReader bufferedReader = new BufferedReader(fileReader);
         ) {
             return bufferedReader.readLine();
         }
@@ -224,8 +213,8 @@ public final class MetricsLite {
             file.createNewFile();
         }
         try (
-                FileWriter fileWriter = new FileWriter(file);
-                BufferedWriter bufferedWriter = new BufferedWriter(fileWriter)
+                final FileWriter fileWriter = new FileWriter(file);
+                final BufferedWriter bufferedWriter = new BufferedWriter(fileWriter)
         ) {
             for (final String line : lines) {
                 bufferedWriter.write(line);
@@ -234,10 +223,13 @@ public final class MetricsLite {
         }
     }
 
-    private static void sendData(final JsonObject data) throws Exception {
+    private static void sendData(final Plugin plugin, final JsonObject data) throws Exception {
         if (data == null) {
             throw new IllegalArgumentException("Data cannot be null");
         }
+        if (logSentData) {
+            plugin.getLogger().info("Sending data to bStats: " + data.toString());
+        }
 
         final HttpsURLConnection connection = (HttpsURLConnection) new URL(URL).openConnection();
 
@@ -257,7 +249,20 @@ public final class MetricsLite {
         outputStream.flush();
         outputStream.close();
 
-        connection.getInputStream().close();
+        if (logResponseStatusText) {
+            final InputStream inputStream = connection.getInputStream();
+            final BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
+
+            final StringBuilder builder = new StringBuilder();
+            String line;
+            while ((line = bufferedReader.readLine()) != null) {
+                builder.append(line);
+            }
+            bufferedReader.close();
+            plugin.getLogger().info("Sent data to bStats and received response: " + builder.toString());
+        } else {
+            connection.getInputStream().close();
+        }
     }
 
     private static byte[] compress(final String str) throws IOException {
@@ -266,7 +271,7 @@ public final class MetricsLite {
         }
         final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
         final GZIPOutputStream gzip = new GZIPOutputStream(outputStream);
-        gzip.write(str.getBytes("UTF-8"));
+        gzip.write(str.getBytes(StandardCharsets.UTF_8));
         gzip.close();
         return outputStream.toByteArray();
     }

maintenance-bungee/src/main/java/eu/kennytv/maintenance/bungee/util/BungeeSenderInfo.java

@@ -0,0 +1,63 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.bungee.util;
+
+import eu.kennytv.maintenance.core.util.SenderInfo;
+import net.md_5.bungee.api.CommandSender;
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.api.connection.ProxiedPlayer;
+
+import java.util.UUID;
+
+public final class BungeeSenderInfo implements SenderInfo {
+    private final CommandSender sender;
+
+    public BungeeSenderInfo(final CommandSender sender) {
+        this.sender = sender;
+    }
+
+    @Override
+    public UUID getUuid() {
+        return sender instanceof ProxiedPlayer ? ((ProxiedPlayer) sender).getUniqueId() : null;
+    }
+
+    @Override
+    public String getName() {
+        return sender.getName();
+    }
+
+    @Override
+    public boolean hasPermission(final String permission) {
+        return sender.hasPermission(permission);
+    }
+
+    @Override
+    public void sendMessage(final String message) {
+        sender.sendMessage(message);
+    }
+
+    @Override
+    public boolean isPlayer() {
+        return sender instanceof ProxiedPlayer;
+    }
+
+    public void sendMessage(final TextComponent textComponent) {
+        sender.sendMessage(textComponent);
+    }
+}

maintenance-bungee/src/main/java/eu/kennytv/maintenance/bungee/util/BungeeServer.java

@@ -0,0 +1,52 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.bungee.util;
+
+import eu.kennytv.maintenance.api.proxy.Server;
+import net.md_5.bungee.api.chat.BaseComponent;
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.api.config.ServerInfo;
+
+public final class BungeeServer implements Server {
+    private final ServerInfo server;
+
+    public BungeeServer(final ServerInfo server) {
+        this.server = server;
+    }
+
+    @Override
+    public String getName() {
+        return server.getName();
+    }
+
+    @Override
+    public boolean hasPlayers() {
+        return !server.getPlayers().isEmpty();
+    }
+
+    @Override
+    public void broadcast(final String message) {
+        final BaseComponent[] s = TextComponent.fromLegacyText(message);
+        server.getPlayers().forEach(p -> p.sendMessage(s));
+    }
+
+    public ServerInfo getServer() {
+        return server;
+    }
+}

maintenance-bungee/src/main/java/eu/kennytv/maintenance/bungee/util/BungeeTask.java

@@ -0,0 +1,35 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.bungee.util;
+
+import eu.kennytv.maintenance.core.util.Task;
+import net.md_5.bungee.api.ProxyServer;
+
+public final class BungeeTask implements Task {
+    private final int id;
+
+    public BungeeTask(final int id) {
+        this.id = id;
+    }
+
+    @Override
+    public void cancel() {
+        ProxyServer.getInstance().getScheduler().cancel(id);
+    }
+}

maintenance-bungee/src/main/resources/bungee.yml

@@ -0,0 +1,7 @@
+name: MaintenanceBungee
+version: ${project.version}
+main: eu.kennytv.maintenance.bungee.MaintenanceBungeeBase
+author: KennyTV
+description: Enable maintenance mode with a custom maintenance motd and icon.
+softDepends: [ServerListPlus]
+website: https://www.spigotmc.org/resources/maintenance.40699/

maintenance-core-proxy/pom.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>eu.kennytv</groupId>
+        <artifactId>maintenance-parent</artifactId>
+        <version>3.0</version>
+    </parent>
+
+    <artifactId>maintenance-core-proxy</artifactId>
+    <name>MaintenanceCoreProxy</name>
+
+    <dependencies>
+        <dependency>
+            <groupId>eu.kennytv</groupId>
+            <artifactId>maintenance-core</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.zaxxer</groupId>
+            <artifactId>HikariCP</artifactId>
+            <version>3.2.0</version>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
+</project>

maintenance-core-proxy/src/main/java/eu/kennytv/maintenance/core/proxy/MaintenanceProxyPlugin.java

@@ -0,0 +1,127 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.proxy;
+
+import eu.kennytv.maintenance.api.proxy.IMaintenanceProxy;
+import eu.kennytv.maintenance.api.proxy.Server;
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.proxy.command.MaintenanceProxyCommand;
+import eu.kennytv.maintenance.core.proxy.runnable.SingleMaintenanceRunnable;
+import eu.kennytv.maintenance.core.proxy.server.DummyServer;
+import eu.kennytv.maintenance.core.runnable.MaintenanceRunnableBase;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+import eu.kennytv.maintenance.core.util.ServerType;
+import eu.kennytv.maintenance.core.util.Task;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @author KennyTV
+ * @since 3.0
+ */
+public abstract class MaintenanceProxyPlugin extends MaintenancePlugin implements IMaintenanceProxy {
+    private final Map<String, Task> serverTasks = new HashMap<>();
+    protected SettingsProxy settingsProxy;
+
+    protected MaintenanceProxyPlugin(final String version, final ServerType serverType) {
+        super(version, serverType);
+    }
+
+    @Override
+    public void setMaintenance(final boolean maintenance) {
+        if (settingsProxy.hasMySQL())
+            settingsProxy.setMaintenanceToSQL(maintenance);
+        settingsProxy.setMaintenance(maintenance);
+        settingsProxy.getConfig().set("maintenance-enabled", maintenance);
+        settingsProxy.saveConfig();
+        serverActions(maintenance);
+    }
+
+    @Override
+    public boolean isMaintenance(final Server server) {
+        return settingsProxy.isMaintenance(server);
+    }
+
+    @Override
+    public boolean setMaintenanceToServer(final Server server, final boolean maintenance) {
+        if (maintenance) {
+            if (!settingsProxy.addMaintenanceServer(server.getName())) return false;
+        } else {
+            if (!settingsProxy.removeMaintenanceServer(server.getName())) return false;
+        }
+        serverActions(server, maintenance);
+        return true;
+    }
+
+    public void serverActions(final Server server, final boolean maintenance) {
+        if (server instanceof DummyServer) return;
+        if (maintenance) {
+            final Server fallback = getServer(settingsProxy.getFallbackServer());
+            if (fallback == null) {
+                if (server.hasPlayers())
+                    getLogger().warning("The set fallback could not be found! Instead kicking players from that server off the network!");
+            } else if (fallback.getName().equals(server.getName()))
+                getLogger().warning("Maintenance has been enabled on the fallback server! If a player joins on a proxied server, they will be kicked completely instead of being sent to the fallback server!");
+            kickPlayers(server, fallback);
+        } else
+            server.broadcast(settingsProxy.getMessage("singleMaintenanceDeactivated").replace("%SERVER%", server.getName()));
+        cancelSingleTask(server);
+    }
+
+    @Override
+    public boolean isServerTaskRunning(final Server server) {
+        return serverTasks.containsKey(server.getName());
+    }
+
+    public void cancelSingleTask(final Server server) {
+        final Task task = serverTasks.remove(server.getName());
+        if (task != null)
+            task.cancel();
+    }
+
+    public MaintenanceRunnableBase startSingleMaintenanceRunnable(final Server server, final int minutes, final boolean enable) {
+        final MaintenanceRunnableBase runnable = new SingleMaintenanceRunnable(this, settingsProxy, minutes, enable, server);
+        serverTasks.put(server.getName(), startMaintenanceRunnable(runnable));
+        return runnable;
+    }
+
+    @Override
+    public List<String> getMaintenanceServers() {
+        final List<String> list = new ArrayList<>();
+        if (isMaintenance()) list.add("global");
+        list.addAll(settingsProxy.getMaintenanceServers());
+        return list.isEmpty() ? null : list;
+    }
+
+    @Override
+    public MaintenanceProxyCommand getCommandManager() {
+        return (MaintenanceProxyCommand) commandManager;
+    }
+
+    public SettingsProxy getSettingsProxy() {
+        return settingsProxy;
+    }
+
+    public abstract String getServer(SenderInfo sender);
+
+    protected abstract void kickPlayers(Server server, Server fallback);
+}

maintenance-core-proxy/src/main/java/eu/kennytv/maintenance/core/proxy/SettingsProxy.java

@@ -0,0 +1,209 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.proxy;
+
+import eu.kennytv.maintenance.api.proxy.Server;
+import eu.kennytv.maintenance.core.Settings;
+import eu.kennytv.maintenance.core.config.ConfigSection;
+import eu.kennytv.maintenance.core.proxy.mysql.MySQL;
+
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.logging.Level;
+
+public final class SettingsProxy extends Settings {
+    private final MaintenanceProxyPlugin plugin;
+    private Set<String> maintenanceServers;
+    private String fallbackServer;
+
+    private String mySQLTable;
+    private String serverTable;
+    private String maintenanceQuery;
+    private String serverQuery;
+    private MySQL mySQL;
+
+    private long millisecondsToCheck;
+    private long lastMySQLCheck;
+    private long lastServerCheck;
+
+    public SettingsProxy(final MaintenanceProxyPlugin plugin) {
+        super(plugin);
+        this.plugin = plugin;
+    }
+
+    private void setupMySQL() throws Exception {
+        super.plugin.getLogger().info("Trying to open database connection...");
+        final ConfigSection section = config.getSection("mysql");
+        if (section == null) {
+            plugin.getLogger().warning("Section missing: mysql");
+            return;
+        }
+
+        mySQL = new MySQL(section.getString("host"),
+                section.getInt("port"),
+                section.getString("username"),
+                section.getString("password"),
+                section.getString("database"));
+
+        // Varchar as the value regarding the possibility of saving stuff like the motd as well in future updates
+        mySQLTable = section.getString("table", "maintenance_settings");
+        serverTable = section.getString("servertable", "maintenance_servers");
+        mySQL.executeUpdate("CREATE TABLE IF NOT EXISTS " + mySQLTable + " (setting VARCHAR(16) PRIMARY KEY, value VARCHAR(255))");
+        mySQL.executeUpdate("CREATE TABLE IF NOT EXISTS " + serverTable + " (server VARCHAR(64) PRIMARY KEY)");
+        maintenanceQuery = "SELECT * FROM " + mySQLTable + " WHERE setting = ?";
+        serverQuery = "SELECT * FROM " + serverTable;
+        super.plugin.getLogger().info("Done!");
+    }
+
+    @Override
+    protected void loadExtraSettings() {
+        // Open database connection if enabled and not already done
+        if (!hasMySQL() && (boolean) config.getDeep("mysql.use-mysql")) {
+            try {
+                setupMySQL();
+            } catch (final Exception e) {
+                mySQL = null;
+                super.plugin.getLogger().log(Level.WARNING, "Error while trying do open database connection!", e);
+            }
+        }
+
+        fallbackServer = config.getString("fallback", "lobby");
+        if (hasMySQL()) {
+            maintenance = loadMaintenance();
+            maintenanceServers = loadMaintenanceServersFromSQL();
+
+            final long configValue = config.getInt("mysql.update-interval");
+            // Even if set to 0, only check every 500 millis
+            millisecondsToCheck = configValue > 0 ? configValue * 1000 : 500;
+            lastMySQLCheck = System.currentTimeMillis();
+            lastServerCheck = System.currentTimeMillis();
+        } else {
+            final List<String> list = config.getStringList("proxied-maintenance-servers");
+            maintenanceServers = list == null ? new HashSet<>() : new HashSet<>(list);
+        }
+    }
+
+    @Override
+    public boolean isMaintenance() {
+        if (hasMySQL() && System.currentTimeMillis() - lastMySQLCheck > millisecondsToCheck) {
+            final boolean databaseValue = loadMaintenance();
+            if (databaseValue != maintenance) {
+                plugin.serverActions(maintenance);
+                maintenance = databaseValue;
+            }
+            lastMySQLCheck = System.currentTimeMillis();
+        }
+        return maintenance;
+    }
+
+    public boolean isMaintenance(final Server server) {
+        if (hasMySQL() && System.currentTimeMillis() - lastServerCheck > millisecondsToCheck) {
+            final Set<String> databaseValue = loadMaintenanceServersFromSQL();
+            if (!databaseValue.equals(maintenanceServers)) {
+                plugin.serverActions(server, maintenance);
+                maintenanceServers = databaseValue;
+            }
+            lastServerCheck = System.currentTimeMillis();
+        }
+        return maintenanceServers.contains(server.getName());
+    }
+
+    public boolean hasMySQL() {
+        return mySQL != null;
+    }
+
+    void setMaintenanceToSQL(final boolean maintenance) {
+        plugin.async(() -> {
+            final String s = String.valueOf(maintenance);
+            mySQL.executeUpdate("INSERT INTO " + mySQLTable + " (setting, value) VALUES (?, ?) ON DUPLICATE KEY UPDATE value = ?", "maintenance", s, s);
+            lastMySQLCheck = System.currentTimeMillis();
+        });
+    }
+
+    boolean addMaintenanceServer(final String server) {
+        if (hasMySQL()) {
+            maintenanceServers = loadMaintenanceServersFromSQL();
+            if (!maintenanceServers.add(server)) return false;
+            plugin.async(() -> mySQL.executeUpdate("INSERT INTO " + serverTable + " (server) VALUES (?)", server));
+            lastServerCheck = System.currentTimeMillis();
+        } else {
+            if (!maintenanceServers.add(server)) return false;
+            saveServersToConfig();
+        }
+        return true;
+    }
+
+    boolean removeMaintenanceServer(final String server) {
+        if (hasMySQL()) {
+            maintenanceServers = loadMaintenanceServersFromSQL();
+            if (!maintenanceServers.remove(server)) return false;
+            plugin.async(() -> mySQL.executeUpdate("DELETE FROM " + serverTable + " WHERE server = ?", server));
+            lastServerCheck = System.currentTimeMillis();
+        } else {
+            if (!maintenanceServers.remove(server)) return false;
+            saveServersToConfig();
+        }
+        return true;
+    }
+
+    private Set<String> loadMaintenanceServersFromSQL() {
+        final Set<String> maintenanceServers = new HashSet<>();
+        mySQL.executeQuery(serverQuery, rs -> {
+            try {
+                while (rs.next()) {
+                    maintenanceServers.add(rs.getString("server"));
+                }
+            } catch (final SQLException e) {
+                plugin.getLogger().warning("An error occured while trying to get the list of single servers with maintenance!");
+                e.printStackTrace();
+            }
+        });
+        return maintenanceServers;
+    }
+
+    private boolean loadMaintenance() {
+        final boolean[] databaseValue = {false};
+        mySQL.executeQuery(maintenanceQuery, rs -> {
+            try {
+                if (rs.next()) {
+                    databaseValue[0] = Boolean.parseBoolean(rs.getString("value"));
+                }
+            } catch (final SQLException e) {
+                e.printStackTrace();
+            }
+        }, "maintenance");
+        return databaseValue[0];
+    }
+
+    private void saveServersToConfig() {
+        config.set("proxied-maintenance-servers", new ArrayList<>(maintenanceServers));
+        saveConfig();
+    }
+
+    public Set<String> getMaintenanceServers() {
+        return maintenanceServers;
+    }
+
+    public String getFallbackServer() {
+        return fallbackServer;
+    }
+}

maintenance-core-proxy/src/main/java/eu/kennytv/maintenance/core/proxy/command/MaintenanceProxyCommand.java

@@ -0,0 +1,68 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.proxy.command;
+
+import eu.kennytv.maintenance.api.proxy.Server;
+import eu.kennytv.maintenance.core.command.MaintenanceCommand;
+import eu.kennytv.maintenance.core.proxy.MaintenanceProxyPlugin;
+import eu.kennytv.maintenance.core.proxy.SettingsProxy;
+import eu.kennytv.maintenance.core.proxy.command.subcommand.*;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+public abstract class MaintenanceProxyCommand extends MaintenanceCommand {
+    private final MaintenanceProxyPlugin plugin;
+    private final SettingsProxy settingsBungee;
+
+    protected MaintenanceProxyCommand(final MaintenanceProxyPlugin plugin, final SettingsProxy settings) {
+        super(plugin, settings);
+        this.plugin = plugin;
+        settingsBungee = settings;
+    }
+
+    @Override
+    protected void addToggleAndTimerCommands() {
+        add(new SingleToggleCommand(plugin), "on", "off");
+        add(new StatusCommand(plugin), "status");
+
+        add(new SingleStarttimerCommand(plugin), "starttimer", "start");
+        add(new SingleEndtimerCommand(plugin), "endtimer", "end");
+        add(new AbortSingleTimerCommand(plugin), "aborttimer", "abort");
+    }
+
+    @Override
+    public List<String> getMaintenanceServersCompletion(final String s) {
+        return settingsBungee.getMaintenanceServers().stream().filter(server -> server.toLowerCase().startsWith(s)).collect(Collectors.toList());
+    }
+
+    public Server checkSingleTimerArgs(final SenderInfo sender, final String[] args) {
+        final Server server = plugin.getServer(args[1]);
+        if (server == null) {
+            sender.sendMessage(settings.getMessage("serverNotFound"));
+            return null;
+        }
+        if (plugin.isServerTaskRunning(server)) {
+            sender.sendMessage(settings.getMessage("singleTimerAlreadyRunning"));
+            return null;
+        }
+        return server;
+    }
+}

maintenance-core-proxy/src/main/java/eu/kennytv/maintenance/core/proxy/command/ProxyCommandInfo.java

@@ -0,0 +1,37 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.proxy.command;
+
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.proxy.MaintenanceProxyPlugin;
+import eu.kennytv.maintenance.core.proxy.SettingsProxy;
+
+public abstract class ProxyCommandInfo extends CommandInfo {
+    protected final MaintenanceProxyPlugin plugin;
+
+    protected ProxyCommandInfo(final MaintenanceProxyPlugin plugin, final String permission, final String helpMessage) {
+        super(plugin, permission, helpMessage);
+        this.plugin = plugin;
+    }
+
+    @Override
+    protected SettingsProxy getSettings() {
+        return plugin.getSettingsProxy();
+    }
+}

maintenance-core-proxy/src/main/java/eu/kennytv/maintenance/core/proxy/command/subcommand/AbortSingleTimerCommand.java

@@ -0,0 +1,73 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.proxy.command.subcommand;
+
+import eu.kennytv.maintenance.api.proxy.Server;
+import eu.kennytv.maintenance.core.proxy.MaintenanceProxyPlugin;
+import eu.kennytv.maintenance.core.proxy.command.ProxyCommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.Collections;
+import java.util.List;
+
+public final class AbortSingleTimerCommand extends ProxyCommandInfo {
+
+    public AbortSingleTimerCommand(final MaintenanceProxyPlugin plugin) {
+        super(plugin, null, "§6/maintenance aborttimer [server] §7(If running, the current timer will be aborted)");
+    }
+
+    @Override
+    public boolean hasPermission(final SenderInfo sender) {
+        return sender.hasMaintenancePermission("timer") || sender.hasPermission("maintenance.singleserver.timer");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (args.length == 1) {
+            if (checkPermission(sender, "timer")) return;
+            if (!plugin.isTaskRunning()) {
+                sender.sendMessage(getMessage("timerNotRunning"));
+                return;
+            }
+
+            plugin.cancelTask();
+            sender.sendMessage(getMessage("timerCancelled"));
+        } else if (args.length == 2) {
+            if (checkPermission(sender, "singleserver.timer")) return;
+            final Server server = plugin.getServer(args[1]);
+            if (server == null) {
+                sender.sendMessage(getMessage("serverNotFound"));
+                return;
+            }
+            if (!plugin.isServerTaskRunning(server)) {
+                sender.sendMessage(getMessage("singleTimerNotRunning"));
+                return;
+            }
+
+            plugin.cancelSingleTask(server);
+            sender.sendMessage(getMessage("singleTimerCancelled"));
+        } else
+            sender.sendMessage(helpMessage);
+    }
+
+    @Override
+    public List<String> getTabCompletion(final SenderInfo sender, final String[] args) {
+        return args.length == 2 && sender.hasMaintenancePermission("singleserver.timer") ? plugin.getCommandManager().getServersCompletion(args[1]) : Collections.emptyList();
+    }
+}

maintenance-core-proxy/src/main/java/eu/kennytv/maintenance/core/proxy/command/subcommand/SingleEndtimerCommand.java

@@ -0,0 +1,78 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.proxy.command.subcommand;
+
+import eu.kennytv.maintenance.api.proxy.Server;
+import eu.kennytv.maintenance.core.proxy.MaintenanceProxyPlugin;
+import eu.kennytv.maintenance.core.proxy.command.ProxyCommandInfo;
+import eu.kennytv.maintenance.core.runnable.MaintenanceRunnableBase;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.Collections;
+import java.util.List;
+
+public final class SingleEndtimerCommand extends ProxyCommandInfo {
+
+    public SingleEndtimerCommand(final MaintenanceProxyPlugin plugin) {
+        super(plugin, null, "§6/maintenance endtimer [server] <minutes> §7(After the given time in minutes, maintenance mode will be disabled)");
+    }
+
+    @Override
+    public boolean hasPermission(final SenderInfo sender) {
+        return sender.hasMaintenancePermission("timer") || sender.hasPermission("maintenance.singleserver.timer");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (args.length == 2) {
+            if (checkPermission(sender, "timer")) return;
+            if (plugin.getCommandManager().checkTimerArgs(sender, args[1])) {
+                sender.sendMessage(helpMessage);
+                return;
+            }
+            if (!plugin.isMaintenance()) {
+                sender.sendMessage(getMessage("alreadyDisabled"));
+                return;
+            }
+            plugin.startMaintenanceRunnable(Integer.parseInt(args[1]), false);
+            sender.sendMessage(getMessage("endtimerStarted").replace("%TIME%", plugin.getRunnable().getTime()));
+        } else if (args.length == 3) {
+            if (checkPermission(sender, "singleserver.timer")) return;
+            if (plugin.getCommandManager().checkTimerArgs(sender, args[2], false)) {
+                sender.sendMessage(helpMessage);
+                return;
+            }
+
+            final Server server = plugin.getCommandManager().checkSingleTimerArgs(sender, args);
+            if (server == null) return;
+            if (!plugin.isMaintenance(server)) {
+                sender.sendMessage(getMessage("singleServerAlreadyDisabled").replace("%SERVER%", server.getName()));
+                return;
+            }
+            final MaintenanceRunnableBase runnable = plugin.startSingleMaintenanceRunnable(server, Integer.parseInt(args[2]), false);
+            sender.sendMessage(getMessage("endtimerStarted").replace("%TIME%", runnable.getTime()));
+        } else
+            sender.sendMessage(helpMessage);
+    }
+
+    @Override
+    public List<String> getTabCompletion(final SenderInfo sender, final String[] args) {
+        return args.length == 2 && sender.hasMaintenancePermission("singleserver.timer") ? plugin.getCommandManager().getMaintenanceServersCompletion(args[1].toLowerCase()) : Collections.emptyList();
+    }
+}

maintenance-core-proxy/src/main/java/eu/kennytv/maintenance/core/proxy/command/subcommand/SingleStarttimerCommand.java

@@ -0,0 +1,80 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.proxy.command.subcommand;
+
+import eu.kennytv.maintenance.api.proxy.Server;
+import eu.kennytv.maintenance.core.proxy.MaintenanceProxyPlugin;
+import eu.kennytv.maintenance.core.proxy.command.ProxyCommandInfo;
+import eu.kennytv.maintenance.core.runnable.MaintenanceRunnableBase;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.Collections;
+import java.util.List;
+
+public final class SingleStarttimerCommand extends ProxyCommandInfo {
+
+    public SingleStarttimerCommand(final MaintenanceProxyPlugin plugin) {
+        super(plugin, null, "§6/maintenance starttimer [server] <minutes> §7(After the given time in minutes, maintenance mode will be enabled)");
+    }
+
+    @Override
+    public boolean hasPermission(final SenderInfo sender) {
+        return sender.hasMaintenancePermission("timer") || sender.hasPermission("maintenance.singleserver.timer");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (args.length == 2) {
+            if (checkPermission(sender, "timer")) return;
+            if (plugin.getCommandManager().checkTimerArgs(sender, args[1])) {
+                sender.sendMessage(helpMessage);
+                return;
+            }
+            if (plugin.isMaintenance()) {
+                sender.sendMessage(getMessage("alreadyEnabled"));
+                return;
+            }
+
+            plugin.startMaintenanceRunnable(Integer.parseInt(args[1]), true);
+            sender.sendMessage(getMessage("starttimerStarted").replace("%TIME%", plugin.getRunnable().getTime()));
+        } else if (args.length == 3) {
+            if (checkPermission(sender, "singleserver.timer")) return;
+            if (plugin.getCommandManager().checkTimerArgs(sender, args[2], false)) {
+                sender.sendMessage(helpMessage);
+                return;
+            }
+
+            final Server server = plugin.getCommandManager().checkSingleTimerArgs(sender, args);
+            if (server == null) return;
+            if (plugin.isMaintenance(server)) {
+                sender.sendMessage(getMessage("singleServerAlreadyEnabled").replace("%SERVER%", server.getName()));
+                return;
+            }
+
+            final MaintenanceRunnableBase runnable = plugin.startSingleMaintenanceRunnable(server, Integer.parseInt(args[2]), true);
+            sender.sendMessage(getMessage("starttimerStarted").replace("%TIME%", runnable.getTime()));
+        } else
+            sender.sendMessage(helpMessage);
+    }
+
+    @Override
+    public List<String> getTabCompletion(final SenderInfo sender, final String[] args) {
+        return args.length == 2 && sender.hasMaintenancePermission("singleserver.timer") ? plugin.getCommandManager().getServersCompletion(args[1].toLowerCase()) : Collections.emptyList();
+    }
+}

maintenance-core-proxy/src/main/java/eu/kennytv/maintenance/core/proxy/command/subcommand/SingleToggleCommand.java

@@ -0,0 +1,84 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.proxy.command.subcommand;
+
+import eu.kennytv.maintenance.api.proxy.Server;
+import eu.kennytv.maintenance.core.proxy.MaintenanceProxyPlugin;
+import eu.kennytv.maintenance.core.proxy.command.ProxyCommandInfo;
+import eu.kennytv.maintenance.core.proxy.server.DummyServer;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.Collections;
+import java.util.List;
+
+public final class SingleToggleCommand extends ProxyCommandInfo {
+
+    public SingleToggleCommand(final MaintenanceProxyPlugin plugin) {
+        super(plugin, null, "§6/maintenance <on/off> [server] §7(Enables/disables maintenance mode)");
+    }
+
+    @Override
+    public boolean hasPermission(final SenderInfo sender) {
+        return sender.hasMaintenancePermission("toggle") || sender.hasPermission("maintenance.singleserver.toggle");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (args.length == 1) {
+            if (checkPermission(sender, "toggle")) return;
+            final boolean maintenance = args[0].equalsIgnoreCase("on");
+            if (maintenance == plugin.isMaintenance()) {
+                sender.sendMessage(getMessage(maintenance ? "alreadyEnabled" : "alreadyDisabled"));
+                return;
+            }
+
+            plugin.setMaintenance(maintenance);
+        } else if (args.length == 2) {
+            if (checkPermission(sender, "singleserver.toggle")) return;
+            final boolean maintenance = args[0].equalsIgnoreCase("on");
+            Server server = plugin.getServer(args[1]);
+            if (server == null) {
+                if (maintenance) {
+                    sender.sendMessage(getMessage("serverNotFound"));
+                    return;
+                }
+                // Let servers be removed from the maintenance list, even if they don't exist on the proxy
+                server = new DummyServer(args[1]);
+                if (!plugin.isMaintenance(server)) {
+                    sender.sendMessage(getMessage("serverNotFound"));
+                    return;
+                }
+            }
+
+            if (plugin.setMaintenanceToServer(server, maintenance)) {
+                if (!sender.isPlayer() || !plugin.getServer(sender).equals(server.getName()))
+                    sender.sendMessage(getMessage(maintenance ? "singleMaintenanceActivated" : "singleMaintenanceDeactivated").replace("%SERVER%", server.getName()));
+            } else
+                sender.sendMessage(getMessage(maintenance ? "singleServerAlreadyEnabled" : "singleServerAlreadyDisabled").replace("%SERVER%", server.getName()));
+        } else
+            sender.sendMessage(helpMessage);
+    }
+
+    @Override
+    public List<String> getTabCompletion(final SenderInfo sender, final String[] args) {
+        if (args.length != 2 || !sender.hasMaintenancePermission("singleserver.toggle")) return Collections.emptyList();
+        return args[0].equalsIgnoreCase("off") ? plugin.getCommandManager().getMaintenanceServersCompletion(args[1].toLowerCase())
+                : plugin.getCommandManager().getServersCompletion(args[1].toLowerCase());
+    }
+}

maintenance-core-proxy/src/main/java/eu/kennytv/maintenance/core/proxy/command/subcommand/StatusCommand.java

@@ -0,0 +1,40 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.proxy.command.subcommand;
+
+import eu.kennytv.maintenance.core.proxy.MaintenanceProxyPlugin;
+import eu.kennytv.maintenance.core.proxy.command.ProxyCommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+public final class StatusCommand extends ProxyCommandInfo {
+
+    public StatusCommand(final MaintenanceProxyPlugin plugin) {
+        super(plugin, "singleserver.status", "§6/maintenance status §7(Lists all proxied servers, that are currently under maintenance)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (getSettings().getMaintenanceServers().isEmpty()) {
+            sender.sendMessage(getMessage("singleServerMaintenanceListEmpty"));
+        } else {
+            sender.sendMessage(getMessage("singleServerMaintenanceList"));
+            getSettings().getMaintenanceServers().forEach(server -> sender.sendMessage("§8- §b" + server));
+        }
+    }
+}

maintenance-core-proxy/src/main/java/eu/kennytv/maintenance/core/proxy/mysql/MySQL.java

@@ -1,4 +1,4 @@
-package eu.kennytv.maintenance.bungee.mysql;
+package eu.kennytv.maintenance.core.proxy.mysql;
 
 import com.zaxxer.hikari.HikariConfig;
 import com.zaxxer.hikari.HikariDataSource;
@@ -12,6 +12,7 @@ import java.util.function.Consumer;
 public final class MySQL {
     private final HikariDataSource hikariDataSource;
 
+    // Excuse me and everything to do with the MySQL stuff, I have little to no idea of how to use databases
     public MySQL(final String hostname, final int port, final String username, final String password, final String database) {
         final HikariConfig hikariConfig = new HikariConfig();
         hikariConfig.setMaximumPoolSize(10);
@@ -60,8 +61,8 @@ public final class MySQL {
         }
     }
 
-    public void close() {
-        if (hikariDataSource != null && !hikariDataSource.isClosed())
-            hikariDataSource.close();
+    public void executeUpdate(final String query, final Object... objects) {
+        executeUpdate(query, res -> {
+        }, objects);
     }
 }

maintenance-core-proxy/src/main/java/eu/kennytv/maintenance/core/proxy/runnable/SingleMaintenanceRunnable.java

@@ -0,0 +1,49 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.proxy.runnable;
+
+import eu.kennytv.maintenance.api.proxy.IMaintenanceProxy;
+import eu.kennytv.maintenance.api.proxy.Server;
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.Settings;
+import eu.kennytv.maintenance.core.runnable.MaintenanceRunnableBase;
+
+public final class SingleMaintenanceRunnable extends MaintenanceRunnableBase {
+    private final Server server;
+
+    public SingleMaintenanceRunnable(final MaintenancePlugin plugin, final Settings settings, final int minutes, final boolean enable, final Server server) {
+        super(plugin, settings, minutes, enable);
+        this.server = server;
+    }
+
+    @Override
+    protected void finish() {
+        ((IMaintenanceProxy) plugin).setMaintenanceToServer(server, enable);
+    }
+
+    @Override
+    protected String startMessageKey() {
+        return settings.getMessage("singleStarttimerBroadcast").replace("%TIME%", getTime()).replace("%SERVER%", server.getName());
+    }
+
+    @Override
+    protected String endMessageKey() {
+        return settings.getMessage("singleEndtimerBroadcast").replace("%TIME%", getTime()).replace("%SERVER%", server.getName());
+    }
+}

maintenance-core-proxy/src/main/java/eu/kennytv/maintenance/core/proxy/server/DummyServer.java

@@ -0,0 +1,43 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.proxy.server;
+
+import eu.kennytv.maintenance.api.proxy.Server;
+
+public final class DummyServer implements Server {
+    private final String name;
+
+    public DummyServer(final String name) {
+        this.name = name;
+    }
+
+    @Override
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public boolean hasPlayers() {
+        return false;
+    }
+
+    @Override
+    public void broadcast(String s) {
+    }
+}

maintenance-core/pom.xml

@@ -3,47 +3,45 @@
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-
     <parent>
         <groupId>eu.kennytv</groupId>
-        <artifactId>maintenance-base</artifactId>
-        <version>2.2</version>
+        <artifactId>maintenance-parent</artifactId>
+        <version>3.0</version>
     </parent>
 
-    <artifactId>maintenancebungee</artifactId>
-    <name>MaintenanceBungee</name>
-
-    <repositories>
-        <repository>
-            <id>bungeecord-repo</id>
-            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
-        </repository>
-    </repositories>
+    <artifactId>maintenance-core</artifactId>
+    <name>MaintenanceCore</name>
 
     <dependencies>
         <dependency>
             <groupId>eu.kennytv</groupId>
-            <artifactId>maintenance-core</artifactId>
-            <version>2.2</version>
-            <scope>provided</scope>
+            <artifactId>maintenance-api</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>compile</scope>
         </dependency>
         <dependency>
-            <groupId>net.md-5</groupId>
-            <artifactId>bungeecord-api</artifactId>
-            <version>1.12-SNAPSHOT</version>
-            <scope>provided</scope>
+            <groupId>org.yaml</groupId>
+            <artifactId>snakeyaml</artifactId>
+            <version>1.23</version>
+            <scope>compile</scope>
         </dependency>
         <dependency>
             <groupId>net.minecrell</groupId>
             <artifactId>ServerListPlus</artifactId>
-            <version>3.4.8</version>
+            <version>3.4.9-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
-            <groupId>com.zaxxer</groupId>
-            <artifactId>HikariCP</artifactId>
-            <version>2.7.8</version>
-            <scope>compile</scope>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>21.0</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.google.code.gson</groupId>
+            <artifactId>gson</artifactId>
+            <version>2.8.5</version>
+            <scope>provided</scope>
         </dependency>
     </dependencies>
-</project>
+</project>

maintenance-core/src/main/java-templates/eu/kennytv/maintenance/core/util/MaintenanceVersion.java

@@ -0,0 +1,6 @@
+package eu.kennytv.maintenance.core.util;
+
+public final class MaintenanceVersion {
+
+    public static final String VERSION = "${project.version}";
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/MaintenancePlugin.java

@@ -0,0 +1,313 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core;
+
+import com.google.common.io.CharStreams;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonObject;
+import eu.kennytv.maintenance.api.IMaintenance;
+import eu.kennytv.maintenance.core.command.MaintenanceCommand;
+import eu.kennytv.maintenance.core.dump.MaintenanceDump;
+import eu.kennytv.maintenance.core.dump.PluginDump;
+import eu.kennytv.maintenance.core.hook.ServerListPlusHook;
+import eu.kennytv.maintenance.core.runnable.MaintenanceRunnable;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+import eu.kennytv.maintenance.core.util.ServerType;
+import eu.kennytv.maintenance.core.util.Task;
+import eu.kennytv.maintenance.core.util.Version;
+
+import java.io.*;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.net.URLConnection;
+import java.nio.charset.StandardCharsets;
+import java.util.Arrays;
+import java.util.List;
+import java.util.UUID;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public abstract class MaintenancePlugin implements IMaintenance {
+    protected final Version version;
+    protected Settings settings;
+    protected ServerListPlusHook serverListPlusHook;
+    protected MaintenanceRunnable runnable;
+    protected MaintenanceCommand commandManager;
+    private final String prefix;
+    private final ServerType serverType;
+    private Version newestVersion;
+    private Task task;
+
+    protected MaintenancePlugin(final String version, final ServerType serverType) {
+        this.version = new Version(version);
+        this.serverType = serverType;
+        this.prefix = "§8[§eMaintenance" + serverType + "§8] ";
+    }
+
+    @Override
+    public void setMaintenance(final boolean maintenance) {
+        settings.setMaintenance(maintenance);
+        settings.getConfig().set("maintenance-enabled", maintenance);
+        settings.saveConfig();
+        serverActions(maintenance);
+    }
+
+    public void serverActions(final boolean maintenance) {
+        if (isTaskRunning())
+            cancelTask();
+        if (serverListPlusHook != null)
+            serverListPlusHook.setEnabled(!maintenance);
+
+        if (maintenance) {
+            kickPlayers();
+            broadcast(settings.getMessage("maintenanceActivated"));
+        } else
+            broadcast(settings.getMessage("maintenanceDeactivated"));
+    }
+
+    public String formatedTimer() {
+        if (!isTaskRunning()) return "-";
+        final int preHours = runnable.getSecondsLeft() / 60;
+        final int minutes = preHours % 60;
+        final int seconds = runnable.getSecondsLeft() % 60;
+        return String.format("%02d:%02d:%02d", preHours / 60, minutes, seconds);
+    }
+
+    public void startMaintenanceRunnable(final int minutes, final boolean enable) {
+        runnable = new MaintenanceRunnable(this, settings, minutes, enable);
+        task = startMaintenanceRunnable(runnable);
+    }
+
+    public boolean updateAvailable() {
+        checkNewestVersion();
+        return version.compareTo(newestVersion) == -1;
+    }
+
+    protected void sendEnableMessage() {
+        getLogger().info("Plugin by KennyTV");
+        if (!settings.hasUpdateChecks()) return;
+        async(() -> {
+            checkNewestVersion();
+            final int compare = version.compareTo(newestVersion);
+            if (compare == -1) {
+                getLogger().info("§cNewest version available: §aVersion " + newestVersion + "§c, you're on §a" + version);
+            } else if (compare == 1) {
+                if (version.getTag().equalsIgnoreCase("snapshot")) {
+                    getLogger().info("§cYou're running a development version, please report bugs on the Discord server (https://kennytv.eu/discord) or the GitHub issue tracker (https://kennytv.eu/maintenance/issues)");
+                } else {
+                    getLogger().info("§cYou're running a version, that doesn't exist! §cN§ai§dc§ee§5!");
+                }
+            }
+        });
+    }
+
+    public boolean installUpdate() {
+        try {
+            final URLConnection conn = new URL("https://github.com/KennyTV/Maintenance/releases/download/" + newestVersion + "/Maintenance.jar").openConnection();
+            writeFile(new BufferedInputStream(conn.getInputStream()), new BufferedOutputStream(new FileOutputStream(getPluginFolder() + "Maintenance.tmp")));
+            final File file = new File(getPluginFolder() + "Maintenance.tmp");
+            final long newlength = file.length();
+            if (newlength < 10000) {
+                file.delete();
+                return false;
+            }
+
+            writeFile(new FileInputStream(file), new BufferedOutputStream(new FileOutputStream(getPluginFile())));
+            file.delete();
+            return true;
+        } catch (final Exception e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
+    private void writeFile(final InputStream is, final OutputStream os) throws IOException {
+        final byte[] chunk = new byte[1024];
+        int chunkSize;
+        while ((chunkSize = is.read(chunk)) != -1) {
+            os.write(chunk, 0, chunkSize);
+        }
+        is.close();
+        os.close();
+    }
+
+    private void checkNewestVersion() {
+        try {
+            final HttpURLConnection c = (HttpURLConnection) new URL("https://api.spigotmc.org/legacy/update.php?resource=40699").openConnection();
+            final BufferedReader reader = new BufferedReader(new InputStreamReader(c.getInputStream()));
+            final String newVersionString = reader.readLine();
+            reader.close();
+            final Version newVersion = new Version(newVersionString);
+            if (!newVersion.equals(version))
+                newestVersion = newVersion;
+        } catch (final Exception ignored) {
+        }
+    }
+
+    public String pasteDump() {
+        final MaintenanceDump dump = new MaintenanceDump(this, settings);
+        try {
+            final HttpURLConnection connection = (HttpURLConnection) new URL("https://hasteb.in/documents").openConnection();
+            connection.setDoOutput(true);
+            connection.setRequestMethod("POST");
+            connection.setRequestProperty("User-Agent", "Maintenance/" + getVersion());
+            connection.setRequestProperty("Content-Type", "text/plain");
+
+            final GsonBuilder gsonBuilder = new GsonBuilder();
+            final byte[] bytes = gsonBuilder.setPrettyPrinting().create().toJson(dump).getBytes(StandardCharsets.UTF_8);
+            connection.setRequestProperty("Content-Length", Integer.toString(bytes.length));
+
+            final OutputStream out = connection.getOutputStream();
+            out.write(bytes);
+            out.close();
+
+            if (connection.getResponseCode() == 503) {
+                getLogger().warning("Could not paste dump, hasteb.in down?");
+                return null;
+            }
+
+            final InputStream in = connection.getInputStream();
+            final String output = CharStreams.toString(new InputStreamReader(in));
+            in.close();
+
+            final JsonObject jsonOutput = gsonBuilder.create().fromJson(output, JsonObject.class);
+            if (!jsonOutput.has("key")) {
+                getLogger().log(Level.WARNING, "Could not paste dump, there was no key returned :(");
+                return null;
+            }
+
+            return jsonOutput.get("key").getAsString();
+        } catch (final IOException e) {
+            getLogger().log(Level.WARNING, "Could not paste dump :(", e);
+            return null;
+        }
+    }
+
+    public void loadMaintenanceIcon() {
+        final File file = new File(getDataFolder(), "maintenance-icon.png");
+        if (!file.exists()) {
+            getLogger().warning("Could not find a 'maintenance-icon.png' file - did you create one in the plugin's folder?");
+            return;
+        }
+
+        try {
+            loadIcon(file);
+        } catch (final Exception e) {
+            getLogger().log(Level.WARNING, "Could not load the 'maintenance-icon.png' file!", e);
+            e.printStackTrace();
+        }
+    }
+
+    public void cancelTask() {
+        task.cancel();
+        runnable = null;
+        task = null;
+    }
+
+    public UUID checkUUID(final SenderInfo sender, final String s) {
+        final UUID uuid;
+        try {
+            uuid = UUID.fromString(s);
+        } catch (final Exception e) {
+            sender.sendMessage(settings.getMessage("invalidUuid"));
+            return null;
+        }
+        return uuid;
+    }
+
+    public boolean isNumeric(final String string) {
+        return string.matches("[0-9]+");
+    }
+
+    @Override
+    public boolean isMaintenance() {
+        return settings.isMaintenance();
+    }
+
+    @Override
+    public boolean isTaskRunning() {
+        return task != null && runnable != null;
+    }
+
+    @Override
+    public Settings getSettings() {
+        return settings;
+    }
+
+    @Override
+    public String getVersion() {
+        return version.toString();
+    }
+
+    public List<String> getMaintenanceServers() {
+        return isMaintenance() ? Arrays.asList("global") : null;
+    }
+
+    public Version getNewestVersion() {
+        return newestVersion;
+    }
+
+    public String getPrefix() {
+        return prefix;
+    }
+
+    public MaintenanceRunnable getRunnable() {
+        return runnable;
+    }
+
+    public MaintenanceCommand getCommandManager() {
+        return commandManager;
+    }
+
+    public ServerType getServerType() {
+        return serverType;
+    }
+
+    protected String getPluginFolder() {
+        return "plugins/";
+    }
+
+    public abstract void async(Runnable runnable);
+
+    public abstract void broadcast(String message);
+
+    public abstract void sendUpdateNotification(SenderInfo sender);
+
+    public abstract SenderInfo getOfflinePlayer(String name);
+
+    public abstract SenderInfo getOfflinePlayer(UUID uuid);
+
+    public abstract File getDataFolder();
+
+    public abstract InputStream getResource(String name);
+
+    public abstract Logger getLogger();
+
+    public abstract String getServerVersion();
+
+    public abstract List<PluginDump> getPlugins();
+
+    protected abstract void loadIcon(File file) throws Exception;
+
+    protected abstract void kickPlayers();
+
+    protected abstract Task startMaintenanceRunnable(Runnable runnable);
+
+    protected abstract File getPluginFile();
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/Settings.java

@@ -0,0 +1,396 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core;
+
+import eu.kennytv.maintenance.api.ISettings;
+import eu.kennytv.maintenance.core.config.Config;
+import eu.kennytv.maintenance.core.util.ServerType;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.util.*;
+import java.util.logging.Level;
+
+public class Settings implements ISettings {
+    private static final Random RANDOM = new Random();
+    protected final MaintenancePlugin plugin;
+    private final Map<UUID, String> whitelistedPlayers = new HashMap<>();
+    private final String[] unsupportedFields;
+    protected boolean maintenance;
+    private Set<Integer> broadcastIntervals;
+    private List<String> pingMessages;
+    private String playerCountMessage;
+    private String playerCountHoverMessage;
+    private String languageName;
+    private boolean customPlayerCountMessage;
+    private boolean customMaintenanceIcon;
+    private boolean joinNotifications;
+    private boolean updateChecks;
+    private boolean debug;
+
+    protected Config config;
+    protected Config language;
+    protected Config whitelist;
+
+    public Settings(final MaintenancePlugin plugin, final String... unsupportedFields) {
+        this.plugin = plugin;
+        this.unsupportedFields = unsupportedFields;
+        if (!plugin.getDataFolder().exists())
+            plugin.getDataFolder().mkdirs();
+
+        createFile("config.yml");
+        createFile("WhitelistedPlayers.yml");
+
+        reloadConfigs();
+    }
+
+    @Override
+    public void reloadConfigs() {
+        try {
+            config = new Config(new File(plugin.getDataFolder(), "config.yml"), unsupportedFields);
+            config.load();
+            config.resetAwesomeHeader();
+            whitelist = new Config(new File(plugin.getDataFolder(), "WhitelistedPlayers.yml"));
+            whitelist.load();
+        } catch (final IOException e) {
+            throw new RuntimeException("Unable to load Maintenance files!", e);
+        }
+
+        loadSettings();
+        createLanguageFile();
+
+        try {
+            language = new Config(new File(plugin.getDataFolder(), "language-" + languageName + ".yml"));
+            language.load();
+        } catch (final IOException e) {
+            throw new RuntimeException("Unable to load Maintenance language file!", e);
+        }
+
+        // Directly save colored messages
+        for (final Map.Entry<String, Object> entry : language.getValues().entrySet()) {
+            if (!(entry.getValue() instanceof String)) continue;
+            entry.setValue(getColoredString((String) entry.getValue()));
+        }
+    }
+
+    public void saveConfig() {
+        try {
+            config.save();
+        } catch (final IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    protected void createFile(final String name) {
+        final File file = new File(plugin.getDataFolder(), name);
+        if (!file.exists()) {
+            try (final InputStream in = plugin.getResource(name)) {
+                Files.copy(in, file.toPath());
+            } catch (final IOException e) {
+                throw new RuntimeException("Unable to create " + name + " file for Maintenance!", e);
+            }
+        }
+    }
+
+    private void saveWhitelistedPlayers() {
+        try {
+            whitelist.save();
+        } catch (final IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private void createLanguageFile() {
+        final File file = new File(plugin.getDataFolder(), "language-" + languageName + ".yml");
+        if (!file.exists()) {
+            try (final InputStream in = plugin.getResource("language-" + languageName + ".yml")) {
+                Files.copy(in, file.toPath());
+            } catch (final IOException e) {
+                plugin.getLogger().warning("Unable to provide language " + languageName);
+                if (!languageName.equals("en")) {
+                    plugin.getLogger().warning("Falling back to default language: en");
+                    languageName = "en";
+                    createLanguageFile();
+                }
+            }
+        }
+    }
+
+    private void loadSettings() {
+        updateConfig();
+
+        pingMessages = config.getStringList("pingmessages");
+        maintenance = config.getBoolean("maintenance-enabled");
+        customPlayerCountMessage = config.getBoolean("enable-playercountmessage");
+        customMaintenanceIcon = config.getBoolean("custom-maintenance-icon");
+        joinNotifications = config.getBoolean("send-join-notification");
+        broadcastIntervals = new HashSet<>(config.getIntList("timer-broadcast-for-seconds"));
+        if (plugin.getServerType() != ServerType.SPONGE)
+            playerCountMessage = getColoredString(getConfigString("playercountmessage"));
+        playerCountHoverMessage = getColoredString(getConfigString("playercounthovermessage"));
+        languageName = getConfigString("language").toLowerCase();
+        updateChecks = config.getBoolean("update-checks", true);
+        debug = config.getBoolean("debug");
+        if (customMaintenanceIcon) {
+            plugin.loadMaintenanceIcon();
+        }
+
+        whitelistedPlayers.clear();
+        whitelist.getValues().forEach((key, value) -> {
+            try {
+                whitelistedPlayers.put(UUID.fromString(key), (String) value);
+            } catch (final Exception e) {
+                plugin.getLogger().warning("invalid WhitelistedPlayers entry: " + key);
+            }
+        });
+        loadExtraSettings();
+    }
+
+    private void updateConfig() {
+        boolean changed = false;
+
+        // 3.0 - update config format from 2.5
+        if (migrateConfig(new File(plugin.getDataFolder(), "bungee-config.yml"))
+                || migrateConfig(new File(plugin.getDataFolder(), "spigot-config.yml"))) {
+            // Also rename old language file
+            final File file = new File(plugin.getDataFolder(), "language-" + languageName + ".yml");
+            if (file.exists()) {
+                if (file.renameTo(new File(plugin.getDataFolder(), "language-" + languageName + ".old")))
+                    plugin.getLogger().info("Renamed old language file!");
+                else
+                    plugin.getLogger().warning("Could not rename old language file! Please rename/delete it yourself as soon as possible!");
+            }
+
+            changed = true;
+        }
+        // 3.0 - move SpigotServer.yml fields to config
+        if (plugin.getServerType() == ServerType.BUNGEE && migrateSpigotServersFile()) {
+            changed = true;
+        }
+        // 3.0 - move maintenace-icon from server to plugin directory
+        final File icon = new File("maintenance-icon.png");
+        if (icon.exists()) {
+            if (icon.renameTo(new File(plugin.getDataFolder(), "maintenance-icon.png")))
+                plugin.getLogger().info("Moved maintenance-icon from server directory to the plugin's directory!");
+            else
+                plugin.getLogger().warning("Could not move maintenance-icon from server directory to the plugin's directory! Please do so yourself!");
+        }
+
+        if (changed) {
+            saveConfig();
+            plugin.getLogger().info("Done! Updated all configs to the new format!");
+        }
+    }
+
+    private boolean migrateConfig(final File file) {
+        if (!file.exists()) return false;
+
+        plugin.getLogger().info("Migrating old config to new format...");
+        final Config oldConfig = new Config(file);
+        try {
+            oldConfig.load();
+        } catch (final IOException e) {
+            plugin.getLogger().log(Level.WARNING, "Error while trying to migrate old config file", e);
+            return false;
+        }
+
+        if (oldConfig.contains("pingmessage"))
+            config.set("pingmessages", Arrays.asList(oldConfig.getString("pingmessage")));
+        if (oldConfig.contains("enable-maintenance-mode"))
+            config.set("maintenance-enabled", oldConfig.getBoolean("enable-maintenance-mode"));
+        config.getValues().entrySet().forEach(entry -> {
+            if (!oldConfig.contains(entry.getKey())) return;
+            entry.setValue(oldConfig.get(entry.getKey()));
+        });
+
+        oldConfig.clear();
+        if (!file.delete())
+            plugin.getLogger().warning("Could not delete old config file! Please delete it as soon as possible.");
+        else
+            plugin.getLogger().info("Updated to new config file!");
+        return true;
+    }
+
+    private boolean migrateSpigotServersFile() {
+        final File file = new File(plugin.getDataFolder(), "SpigotServers.yml");
+        if (!file.exists()) return false;
+
+        final Config oldFile = new Config(file);
+        try {
+            oldFile.load();
+        } catch (final IOException e) {
+            plugin.getLogger().log(Level.WARNING, "Error while trying to migrate old SpigotServers file", e);
+            return false;
+        }
+
+        if (oldFile.contains("maintenance-on"))
+            config.set("proxied-maintenance-servers", oldFile.getStringList("maintenance-on"));
+        if (oldFile.contains("fallback"))
+            config.set("fallback", oldFile.getString("fallback"));
+
+        oldFile.clear();
+        if (!file.delete())
+            plugin.getLogger().warning("Could not delete old SpigotServers.yml file! Please delete it as soon as possible.");
+        else
+            plugin.getLogger().info("Deleted old SpigotServers.yml file!");
+        return true;
+    }
+
+    private static final String ALL_CODES = "0123456789AaBbCcDdEeFfKkLlMmNnOoRr";
+
+    public String getColoredString(final String s) {
+        // Method taken from Bungee
+        final char[] b = s.toCharArray();
+        for (int i = 0; i < b.length - 1; i++) {
+            if (b[i] == '&' && ALL_CODES.indexOf(b[i + 1]) > -1) {
+                b[i] = '§';
+                b[i + 1] = Character.toLowerCase(b[i + 1]);
+            }
+        }
+        return new String(b);
+    }
+
+    public String getConfigString(final String path) {
+        if (!config.contains(path)) {
+            plugin.getLogger().warning("The config is missing the following string: " + path);
+            return "null";
+        }
+        return config.getString(path);
+    }
+
+    public String getMessage(final String path) {
+        return getMessage(path, "null");
+    }
+
+    public String getMessage(final String path, final String def) {
+        if (!language.contains(path)) {
+            plugin.getLogger().warning("The language file is missing the following string: " + path);
+            return def;
+        }
+        return language.getString(path);
+    }
+
+    public String getRandomPingMessage() {
+        if (pingMessages.isEmpty()) return "";
+        final String s = pingMessages.size() > 1 ? pingMessages.get(RANDOM.nextInt(pingMessages.size())) : pingMessages.get(0);
+        return getColoredString(s.replace("%NEWLINE%", "\n").replace("%TIMER%", plugin.formatedTimer()));
+    }
+
+    @Override
+    public boolean removeWhitelistedPlayer(final UUID uuid) {
+        if (!whitelistedPlayers.containsKey(uuid)) return false;
+        whitelistedPlayers.remove(uuid);
+        whitelist.remove(uuid.toString());
+        saveWhitelistedPlayers();
+        return true;
+    }
+
+    @Deprecated
+    @Override
+    public boolean removeWhitelistedPlayer(final String name) {
+        final Map.Entry<UUID, String> entry = whitelistedPlayers.entrySet().stream().filter(e -> e.getValue().equalsIgnoreCase(name)).findAny().orElse(null);
+        if (entry == null) return false;
+
+        final UUID uuid = entry.getKey();
+        whitelistedPlayers.remove(uuid);
+        whitelist.remove(uuid.toString());
+        saveWhitelistedPlayers();
+        return true;
+    }
+
+    @Override
+    public boolean addWhitelistedPlayer(final UUID uuid, final String name) {
+        final boolean contains = !whitelistedPlayers.containsKey(uuid);
+        whitelistedPlayers.put(uuid, name);
+        whitelist.set(uuid.toString(), name);
+        saveWhitelistedPlayers();
+        return contains;
+    }
+
+    @Override
+    public Map<UUID, String> getWhitelistedPlayers() {
+        return whitelistedPlayers;
+    }
+
+    @Override
+    public boolean isMaintenance() {
+        return maintenance;
+    }
+
+    public void setMaintenance(final boolean maintenance) {
+        this.maintenance = maintenance;
+    }
+
+    @Override
+    public boolean isJoinNotifications() {
+        return joinNotifications;
+    }
+
+    @Override
+    public boolean hasCustomIcon() {
+        return customMaintenanceIcon;
+    }
+
+    @Override
+    public boolean debugEnabled() {
+        return debug;
+    }
+
+    public boolean hasUpdateChecks() {
+        return updateChecks;
+    }
+
+    public Config getConfig() {
+        return config;
+    }
+
+    public List<String> getPingMessages() {
+        return pingMessages;
+    }
+
+    public Set<Integer> getBroadcastIntervals() {
+        return broadcastIntervals;
+    }
+
+    public String getPlayerCountMessage() {
+        return playerCountMessage.replace("%TIMER%", plugin.formatedTimer());
+    }
+
+    public String getPlayerCountHoverMessage() {
+        return playerCountHoverMessage.replace("%TIMER%", plugin.formatedTimer());
+    }
+
+    public String getKickMessage() {
+        return getMessage("kickmessage", "§cThe server is currently under maintenance!%NEWLINE%§cTry again later!")
+                .replace("%NEWLINE%", "\n").replace("%TIMER%", plugin.formatedTimer());
+    }
+
+    public String getLanguage() {
+        return languageName;
+    }
+
+    public boolean hasCustomPlayerCountMessage() {
+        return customPlayerCountMessage;
+    }
+
+    protected void loadExtraSettings() {
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/CommandInfo.java

@@ -0,0 +1,76 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.Settings;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.Collections;
+import java.util.List;
+
+public abstract class CommandInfo {
+    protected final MaintenancePlugin plugin;
+    protected final String helpMessage;
+    private final String permission;
+
+    protected CommandInfo(final MaintenancePlugin plugin, final String permission, final String helpMessage) {
+        this.plugin = plugin;
+        this.permission = permission;
+        this.helpMessage = helpMessage;
+    }
+
+    public boolean hasPermission(final SenderInfo sender) {
+        return sender.hasMaintenancePermission(permission);
+    }
+
+    public String getHelpMessage() {
+        return helpMessage;
+    }
+
+    public List<String> getTabCompletion(final SenderInfo sender, final String[] args) {
+        return Collections.emptyList();
+    }
+
+    public abstract void execute(SenderInfo sender, String[] args);
+
+    protected boolean checkPermission(final SenderInfo sender, final String permission) {
+        if (!sender.hasMaintenancePermission(permission)) {
+            sender.sendMessage(getMessage("noPermission"));
+            return true;
+        }
+        return false;
+    }
+
+    protected boolean checkArgs(final SenderInfo sender, final String[] args, final int length) {
+        if (args.length != length) {
+            sender.sendMessage(helpMessage);
+            return true;
+        }
+        return false;
+    }
+
+    protected String getMessage(final String s) {
+        return plugin.getSettings().getMessage(s);
+    }
+
+    protected Settings getSettings() {
+        return plugin.getSettings();
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/MaintenanceCommand.java

@@ -0,0 +1,162 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.Settings;
+import eu.kennytv.maintenance.core.command.subcommand.*;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.*;
+import java.util.stream.Collectors;
+
+public abstract class MaintenanceCommand {
+    protected final MaintenancePlugin plugin;
+    protected final Settings settings;
+    private final Map<String, CommandInfo> commandExecutors = new LinkedHashMap<>();
+    private final List<CommandInfo> commands = new ArrayList<>();
+    private final HelpCommand help;
+
+    protected MaintenanceCommand(final MaintenancePlugin plugin, final Settings settings) {
+        this.plugin = plugin;
+        this.settings = settings;
+        help = new HelpCommand(plugin);
+    }
+
+    protected void registerCommands() {
+        add(help, "help");
+        add(new ReloadCommand(plugin), "reload");
+
+        addToggleAndTimerCommands();
+
+        add(new WhitelistCommand(plugin), "whitelist");
+        add(new WhitelistAddCommand(plugin), "add");
+        add(new WhitelistRemoveCommand(plugin), "remove");
+
+        add(new SetMotdCommand(plugin), "setmotd");
+        add(new RemoveMotdCommand(plugin), "removemotd");
+        add(new MotdCommand(plugin), "motd");
+
+        add(new UpdateCommand(plugin), "update", "forceupdate");
+        add(new DumpCommand(plugin), "dump");
+    }
+
+    protected void add(final CommandInfo command, final String... aliases) {
+        commands.add(command);
+        for (final String alias : aliases) {
+            commandExecutors.put(alias, command);
+        }
+    }
+
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (!sender.hasMaintenancePermission("command")) {
+            sender.sendMessage(settings.getMessage("noPermission"));
+            return;
+        }
+        if (args.length == 0) {
+            help.sendUsage(sender);
+            return;
+        }
+
+        final CommandInfo command = commandExecutors.get(args[0].toLowerCase());
+        if (command == null) {
+            help.sendUsage(sender);
+            return;
+        }
+        if (!command.hasPermission(sender)) {
+            sender.sendMessage(settings.getMessage("noPermission"));
+            return;
+        }
+
+        command.execute(sender, args);
+    }
+
+    public List<String> getSuggestions(final SenderInfo sender, final String[] args) {
+        if (!sender.hasMaintenancePermission("command") || args.length == 0) return Collections.emptyList();
+        final String s = args[0].toLowerCase();
+        if (args.length == 1)
+            return commandExecutors.entrySet().stream().filter(entry -> entry.getKey().startsWith(s) && entry.getValue().hasPermission(sender)).map(Map.Entry::getKey).collect(Collectors.toList());
+        final CommandInfo info = commandExecutors.get(args[0]);
+        return info != null && info.hasPermission(sender) ? info.getTabCompletion(sender, args) : Collections.emptyList();
+    }
+
+    public boolean checkTimerArgs(final SenderInfo sender, final String time, final boolean taskCheck) {
+        if (!plugin.isNumeric(time)) return true;
+        if (taskCheck) {
+            if (plugin.isTaskRunning()) {
+                sender.sendMessage(settings.getMessage("timerAlreadyRunning"));
+                return true;
+            }
+        }
+
+        final int minutes = Integer.parseInt(time);
+        if (minutes > 40320) {
+            sender.sendMessage(settings.getMessage("timerTooLong"));
+            return true;
+        }
+        if (minutes < 1) {
+            sender.sendMessage("§8§o[KennyTV whispers to you] §7§oThink about running a timer for a negative amount of minutes. Doesn't work §lthat §7§owell.");
+            return true;
+        }
+        return false;
+    }
+
+    public boolean checkTimerArgs(final SenderInfo sender, final String time) {
+        return checkTimerArgs(sender, time, true);
+    }
+
+    protected void addToggleAndTimerCommands() {
+        add(new ToggleCommand(plugin), "on", "off");
+
+        add(new StarttimerCommand(plugin), "starttimer", "start");
+        add(new EndtimerCommand(plugin), "endtimer", "end");
+        add(new AbortTimerCommand(plugin), "aborttimer", "abort");
+    }
+
+    public void checkForUpdate(final SenderInfo sender) {
+        if (plugin.updateAvailable()) {
+            sender.sendMessage(plugin.getPrefix() + "§cNewest version available: §aVersion " + plugin.getNewestVersion() + "§c, you're on §a" + plugin.getVersion());
+            sender.sendMessage(plugin.getPrefix() + "§c§lWARNING: §cYou will have to restart the server to prevent further issues and to complete the update! If you can't do that, don't update!");
+            sendUpdateMessage(sender);
+        } else
+            sender.sendMessage(plugin.getPrefix() + "§aYou already have the latest version of the plugin!");
+    }
+
+    protected void sendUpdateMessage(final SenderInfo sender) {
+        sender.sendMessage(plugin.getPrefix() + "§eUse §c§l/maintenance forceupdate §eto update!");
+    }
+
+    public List<String> getServersCompletion(final String s) {
+        return null;
+    }
+
+    public List<String> getMaintenanceServersCompletion(final String s) {
+        return null;
+    }
+
+    public List<String> getPlayersCompletion() {
+        return null;
+    }
+
+    public abstract void sendDumpMessage(final SenderInfo sender, final String url);
+
+    public List<CommandInfo> getCommands() {
+        return commands;
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/AbortTimerCommand.java

@@ -0,0 +1,46 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+public final class AbortTimerCommand extends CommandInfo {
+
+    public AbortTimerCommand(final MaintenancePlugin plugin) {
+        super(plugin, "timer", "§6/maintenance aborttimer §7(If running, the current timer will be aborted)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (args.length != 1) {
+            sender.sendMessage(helpMessage);
+            return;
+        }
+
+        if (!plugin.isTaskRunning()) {
+            sender.sendMessage(getMessage("timerNotRunning"));
+            return;
+        }
+
+        plugin.cancelTask();
+        sender.sendMessage(getMessage("timerCancelled"));
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/DumpCommand.java

@@ -0,0 +1,58 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.concurrent.TimeUnit;
+
+public final class DumpCommand extends CommandInfo {
+    private long lastDump;
+
+    public DumpCommand(final MaintenancePlugin plugin) {
+        super(plugin, "dump", "§6/maintenance dump §7(Dumps some server information, used for bug reports)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (checkArgs(sender, args, 1)) return;
+        if (System.currentTimeMillis() - lastDump < TimeUnit.MINUTES.toMillis(5)) {
+            sender.sendMessage(plugin.getPrefix() + "§cYou can only create a dump every 5 minutes!");
+            return;
+        }
+
+        lastDump = System.currentTimeMillis();
+        sender.sendMessage(plugin.getPrefix() + "§7The dump is being created, this might take a moment.");
+        plugin.async(() -> {
+            final String key = plugin.pasteDump();
+            if (key == null) {
+                if (sender.isPlayer())
+                    sender.sendMessage(plugin.getPrefix() + "§cCould not paste dump (see the console for details)");
+                return;
+            }
+
+            final String url = "https://hasteb.in/" + key;
+            sender.sendMessage(plugin.getPrefix() + "§c" + url);
+            if (sender.isPlayer())
+                plugin.getCommandManager().sendDumpMessage(sender, url);
+        });
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/EndtimerCommand.java

@@ -0,0 +1,46 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+public final class EndtimerCommand extends CommandInfo {
+
+    public EndtimerCommand(final MaintenancePlugin plugin) {
+        super(plugin, "timer", "§6/maintenance endtimer <minutes> §7(After the given time in minutes, maintenance mode will be disabled)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (checkArgs(sender, args, 2)) return;
+        if (plugin.getCommandManager().checkTimerArgs(sender, args[1])) {
+            sender.sendMessage(helpMessage);
+            return;
+        }
+        if (!plugin.isMaintenance()) {
+            sender.sendMessage(getMessage("alreadyDisabled"));
+            return;
+        }
+
+        plugin.startMaintenanceRunnable(Integer.parseInt(args[1]), false);
+        sender.sendMessage(getMessage("endtimerStarted").replace("%TIME%", plugin.getRunnable().getTime()));
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/HelpCommand.java

@@ -0,0 +1,90 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import com.google.common.base.Preconditions;
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+public final class HelpCommand extends CommandInfo {
+    private static final int COMMANDS_PER_PAGE = 8;
+
+    public HelpCommand(final MaintenancePlugin plugin) {
+        super(plugin, null, "§6/maintenance help [page] §7(Shows this beautiful help window)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (args.length > 2) {
+            sender.sendMessage(helpMessage);
+            return;
+        }
+
+        if (args.length == 1) {
+            sendUsage(sender);
+        } else {
+            if (!plugin.isNumeric(args[1])) {
+                sender.sendMessage(helpMessage);
+                return;
+            }
+
+            final int page = Integer.parseInt(args[1]);
+            sendUsage(sender, page == 0 ? 1 : page);
+        }
+    }
+
+    public void sendUsage(final SenderInfo sender) {
+        sendUsage(sender, 1);
+    }
+
+    public void sendUsage(final SenderInfo sender, final int page) {
+        Preconditions.checkArgument(page > 0);
+        final List<String> commands = plugin.getCommandManager().getCommands().stream().filter(cmd -> cmd.hasPermission(sender)).map(CommandInfo::getHelpMessage).collect(Collectors.toList());
+        if ((page - 1) * COMMANDS_PER_PAGE >= commands.size()) {
+            sender.sendMessage(getMessage("helpPageNotFound"));
+            return;
+        }
+
+        final List<String> filteredCommands;
+        if (page * COMMANDS_PER_PAGE >= commands.size())
+            filteredCommands = commands.subList((page - 1) * COMMANDS_PER_PAGE, commands.size());
+        else
+            filteredCommands = commands.subList((page - 1) * COMMANDS_PER_PAGE, page * COMMANDS_PER_PAGE);
+
+        final String header = "§8========[ §eMaintenance" + plugin.getServerType() + " §8| §e" + page + "/" + ((commands.size() + getDivide(commands.size())) / COMMANDS_PER_PAGE) + " §8]========";
+        sender.sendMessage("");
+        sender.sendMessage(header);
+        filteredCommands.forEach(sender::sendMessage);
+        if (page * COMMANDS_PER_PAGE < commands.size())
+            sender.sendMessage("§7Use §b/maintenance help " + (page + 1) + " §7to get to the next help window.");
+        else
+            sender.sendMessage("§8× §eVersion " + plugin.getVersion() + " §7by §bKennyTV");
+        sender.sendMessage(header);
+        sender.sendMessage("");
+    }
+
+    private int getDivide(final int size) {
+        final int commandSize = size % COMMANDS_PER_PAGE;
+        return commandSize > 0 ? COMMANDS_PER_PAGE - commandSize : 0;
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/MotdCommand.java

@@ -0,0 +1,43 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+public final class MotdCommand extends CommandInfo {
+
+    public MotdCommand(final MaintenancePlugin plugin) {
+        super(plugin, "motd", "§6/maintenance motd §7(Lists the currently set maintenance motds)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (checkArgs(sender, args, 1)) return;
+        sender.sendMessage(getMessage("motdList"));
+        for (int i = 0; i < getSettings().getPingMessages().size(); i++) {
+            sender.sendMessage("§b" + (i + 1) + "§8§m---------");
+            for (final String motd : getSettings().getColoredString(getSettings().getPingMessages().get(i)).split("%NEWLINE%")) {
+                sender.sendMessage(motd);
+            }
+        }
+        sender.sendMessage("§8§m----------");
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/ReloadCommand.java

@@ -0,0 +1,37 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+public final class ReloadCommand extends CommandInfo {
+
+    public ReloadCommand(final MaintenancePlugin plugin) {
+        super(plugin, "reload", "§6/maintenance reload §7(Reloads the config file, whitelist file and the server-icon)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (checkArgs(sender, args, 1)) return;
+        getSettings().reloadConfigs();
+        sender.sendMessage(getMessage("reload"));
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/RemoveMotdCommand.java

@@ -0,0 +1,73 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.Settings;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public final class RemoveMotdCommand extends CommandInfo {
+
+    public RemoveMotdCommand(final MaintenancePlugin plugin) {
+        super(plugin, "setmotd", "§6/maintenance removemotd <index> §7(Removes a maintenance motd)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (checkArgs(sender, args, 2)) return;
+        if (!plugin.isNumeric(args[1])) {
+            sender.sendMessage(helpMessage);
+            return;
+        }
+
+        final Settings settings = getSettings();
+        if (settings.getPingMessages().size() < 2) {
+            sender.sendMessage(getMessage("removeMotdError"));
+            return;
+        }
+
+        final int index = Integer.parseInt(args[1]);
+        if (index == 0 || index > settings.getPingMessages().size()) {
+            sender.sendMessage(getMessage("setMotdIndexError").replace("%MOTDS%", Integer.toString(settings.getPingMessages().size()))
+                    .replace("%NEWAMOUNT%", Integer.toString(settings.getPingMessages().size())));
+            return;
+        }
+
+        settings.getPingMessages().remove(index - 1);
+        settings.getConfig().set("pingmessages", settings.getPingMessages());
+        settings.saveConfig();
+        sender.sendMessage(getMessage("removedMotd").replace("%INDEX%", args[1]));
+    }
+
+    @Override
+    public List<String> getTabCompletion(final SenderInfo sender, final String[] args) {
+        if (args.length != 2) return Collections.emptyList();
+        final int size = plugin.getSettings().getPingMessages().size();
+        final List<String> list = new ArrayList<>(size);
+        for (int i = 1; i <= size; i++) {
+            list.add(String.valueOf(i));
+        }
+        return list;
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/SetMotdCommand.java

@@ -0,0 +1,95 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.Settings;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public final class SetMotdCommand extends CommandInfo {
+
+    public SetMotdCommand(final MaintenancePlugin plugin) {
+        super(plugin, "setmotd", "§6/maintenance setmotd <index> <1/2> <message> §7(Sets a motd for maintenance mode)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (args.length < 4 || !plugin.isNumeric(args[1])) {
+            sender.sendMessage(helpMessage);
+            return;
+        }
+
+        final Settings settings = getSettings();
+        final int index = Integer.parseInt(args[1]);
+        if (index == 0 || index > settings.getPingMessages().size() + 1) {
+            sender.sendMessage(getMessage("setMotdIndexError").replace("%MOTDS%", Integer.toString(settings.getPingMessages().size()))
+                    .replace("%NEWAMOUNT%", Integer.toString(settings.getPingMessages().size() + 1)));
+            return;
+        }
+
+        if (!plugin.isNumeric(args[2])) {
+            sender.sendMessage(getMessage("setMotdLineError"));
+            return;
+        }
+
+        final int line = Integer.parseInt(args[2]);
+        if (line != 1 && line != 2) {
+            sender.sendMessage(getMessage("setMotdLineError"));
+            return;
+        }
+
+        final String message = String.join(" ", Arrays.copyOfRange(args, 3, args.length));
+        final String oldMessage = index > settings.getPingMessages().size() ? "" : settings.getPingMessages().get(index - 1);
+        final String newMessage;
+        if (line == 1)
+            newMessage = oldMessage.contains("%NEWLINE%") ?
+                    message + "%NEWLINE%" + oldMessage.split("%NEWLINE%", 2)[1] : message;
+        else
+            newMessage = oldMessage.contains("%NEWLINE%") ?
+                    oldMessage.split("%NEWLINE%", 2)[0] + "%NEWLINE%" + message : oldMessage + "%NEWLINE%" + message;
+
+        if (index > settings.getPingMessages().size())
+            settings.getPingMessages().add(newMessage);
+        else
+            settings.getPingMessages().set(index - 1, newMessage);
+        settings.getConfig().set("pingmessages", settings.getPingMessages());
+        settings.saveConfig();
+        sender.sendMessage(settings.getMessage("setMotd").replace("%LINE%", args[2]).replace("%INDEX%", args[1])
+                .replace("%MOTD%", "§f" + settings.getColoredString(message)));
+    }
+
+    @Override
+    public List<String> getTabCompletion(final SenderInfo sender, final String[] args) {
+        if (args.length == 3) return Arrays.asList("1", "2");
+        if (args.length == 2) {
+            final List<String> list = new ArrayList<>();
+            for (int i = 1; i <= getSettings().getPingMessages().size() + 1; i++) {
+                list.add(String.valueOf(i));
+            }
+            return list;
+        }
+        return Collections.emptyList();
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/StarttimerCommand.java

@@ -0,0 +1,46 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+public final class StarttimerCommand extends CommandInfo {
+
+    public StarttimerCommand(final MaintenancePlugin plugin) {
+        super(plugin, "timer", "§6/maintenance starttimer <minutes> §7(After the given time in minutes, maintenance mode will be enabled)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (checkArgs(sender, args, 2)) return;
+        if (plugin.getCommandManager().checkTimerArgs(sender, args[1])) {
+            sender.sendMessage(helpMessage);
+            return;
+        }
+        if (plugin.isMaintenance()) {
+            sender.sendMessage(getMessage("alreadyEnabled"));
+            return;
+        }
+
+        plugin.startMaintenanceRunnable(Integer.parseInt(args[1]), true);
+        sender.sendMessage(getMessage("starttimerStarted").replace("%TIME%", plugin.getRunnable().getTime()));
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/ToggleCommand.java

@@ -0,0 +1,43 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+public final class ToggleCommand extends CommandInfo {
+
+    public ToggleCommand(final MaintenancePlugin plugin) {
+        super(plugin, "toggle", "§6/maintenance <on/off> §7(Enables/disables maintenance mode)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (checkArgs(sender, args, 1)) return;
+
+        final boolean maintenance = args[0].equalsIgnoreCase("on");
+        if (maintenance == plugin.isMaintenance()) {
+            sender.sendMessage(getMessage(maintenance ? "alreadyEnabled" : "alreadyDisabled"));
+            return;
+        }
+
+        plugin.setMaintenance(maintenance);
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/UpdateCommand.java

@@ -0,0 +1,49 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+public final class UpdateCommand extends CommandInfo {
+
+    public UpdateCommand(final MaintenancePlugin plugin) {
+        super(plugin, "update", "§6/maintenance update §7(Remotely downloads the newest version of the plugin onto your server)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (checkArgs(sender, args, 1)) return;
+        if (args[0].equalsIgnoreCase("update")) {
+            plugin.async(() -> plugin.getCommandManager().checkForUpdate(sender));
+        } else {
+            if (!plugin.updateAvailable()) {
+                sender.sendMessage(plugin.getPrefix() + "§aYou already have the latest version of the plugin!");
+                return;
+            }
+
+            sender.sendMessage(getMessage("updateDownloading"));
+            if (plugin.installUpdate())
+                sender.sendMessage(getMessage("updateFinished"));
+            else
+                sender.sendMessage(getMessage("updateFailed"));
+        }
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/WhitelistAddCommand.java

@@ -0,0 +1,77 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.UUID;
+
+public final class WhitelistAddCommand extends CommandInfo {
+
+    public WhitelistAddCommand(final MaintenancePlugin plugin) {
+        super(plugin, "whitelist.add", "§6/maintenance add <name/uuid> §7(Adds the player to the maintenance whitelist, so they can join the server even though maintenance is enabled)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (checkArgs(sender, args, 2)) return;
+        if (args[1].length() == 36) {
+            final UUID uuid = plugin.checkUUID(sender, args[1]);
+            if (uuid != null)
+                addPlayerToWhitelist(sender, uuid);
+        } else
+            addPlayerToWhitelist(sender, args[1]);
+    }
+
+    @Override
+    public List<String> getTabCompletion(final SenderInfo sender, final String[] args) {
+        return args.length == 2 ? plugin.getCommandManager().getPlayersCompletion() : Collections.emptyList();
+    }
+
+    private void addPlayerToWhitelist(final SenderInfo sender, final String name) {
+        final SenderInfo selected = plugin.getOfflinePlayer(name);
+        if (selected == null) {
+            sender.sendMessage(getMessage("playerNotOnline"));
+            return;
+        }
+
+        whitelistAddMessage(sender, selected);
+    }
+
+    private void addPlayerToWhitelist(final SenderInfo sender, final UUID uuid) {
+        final SenderInfo selected = plugin.getOfflinePlayer(uuid);
+        if (selected == null) {
+            sender.sendMessage(getMessage("playerNotFoundUuid"));
+            return;
+        }
+
+        whitelistAddMessage(sender, selected);
+    }
+
+    private void whitelistAddMessage(final SenderInfo sender, final SenderInfo selected) {
+        if (getSettings().addWhitelistedPlayer(selected.getUuid(), selected.getName()))
+            sender.sendMessage(getMessage("whitelistAdded").replace("%PLAYER%", selected.getName()));
+        else
+            sender.sendMessage(getMessage("whitelistAlreadyAdded").replace("%PLAYER%", selected.getName()));
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/WhitelistCommand.java

@@ -0,0 +1,48 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.Map;
+import java.util.UUID;
+
+public final class WhitelistCommand extends CommandInfo {
+
+    public WhitelistCommand(final MaintenancePlugin plugin) {
+        super(plugin, "whitelist.list", "§6/maintenance whitelist §7(Shows all whitelisted players for the maintenance mode)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (checkArgs(sender, args, 1)) return;
+
+        final Map<UUID, String> players = getSettings().getWhitelistedPlayers();
+        if (players.isEmpty()) {
+            sender.sendMessage(getMessage("whitelistEmpty"));
+        } else {
+            sender.sendMessage(getMessage("whitelistedPlayers"));
+            final String format = getMessage("whitelistedPlayersFormat");
+            players.forEach((key, value) -> sender.sendMessage(format.replace("%NAME%", value).replace("%UUID%", key.toString())));
+            sender.sendMessage("");
+        }
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/command/subcommand/WhitelistRemoveCommand.java

@@ -0,0 +1,80 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.command.subcommand;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.command.CommandInfo;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+public final class WhitelistRemoveCommand extends CommandInfo {
+
+    public WhitelistRemoveCommand(final MaintenancePlugin plugin) {
+        super(plugin, "whitelist.remove", "§6/maintenance remove <name/uuid> §7(Removes the player from the maintenance whitelist)");
+    }
+
+    @Override
+    public void execute(final SenderInfo sender, final String[] args) {
+        if (checkArgs(sender, args, 2)) return;
+        if (args[1].length() == 36) {
+            final UUID uuid = plugin.checkUUID(sender, args[1]);
+            if (uuid != null)
+                removePlayerFromWhitelist(sender, uuid);
+        } else
+            removePlayerFromWhitelist(sender, args[1]);
+    }
+
+    @Override
+    public List<String> getTabCompletion(final SenderInfo sender, final String[] args) {
+        return args.length == 2 ? getSettings().getWhitelistedPlayers().values().stream()
+                .filter(name -> name.toLowerCase().startsWith(args[1])).collect(Collectors.toList()) : Collections.emptyList();
+    }
+
+    private void removePlayerFromWhitelist(final SenderInfo sender, final String name) {
+        final SenderInfo selected = plugin.getOfflinePlayer(name);
+        if (selected == null) {
+            if (getSettings().removeWhitelistedPlayer(name))
+                sender.sendMessage(getMessage("whitelistRemoved").replace("%PLAYER%", name));
+            else
+                sender.sendMessage(getMessage("whitelistNotFound"));
+            return;
+        }
+
+        whitelistRemoveMessage(sender, selected.getUuid(), selected.getName());
+    }
+
+    private void removePlayerFromWhitelist(final SenderInfo sender, final UUID uuid) {
+        final SenderInfo selected = plugin.getOfflinePlayer(uuid);
+        if (selected == null)
+            whitelistRemoveMessage(sender, uuid, uuid.toString());
+        else
+            whitelistRemoveMessage(sender, selected.getUuid(), selected.getName());
+    }
+
+    private void whitelistRemoveMessage(final SenderInfo sender, final UUID uuid, final String toReplace) {
+        if (getSettings().removeWhitelistedPlayer(uuid))
+            sender.sendMessage(getMessage("whitelistRemoved").replace("%PLAYER%", toReplace));
+        else
+            sender.sendMessage(getMessage("whitelistNotFound"));
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/config/Config.java

@@ -0,0 +1,172 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.config;
+
+import org.yaml.snakeyaml.DumperOptions;
+import org.yaml.snakeyaml.Yaml;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.util.*;
+
+/**
+ * Further modified version of the SimpleConfig project of PSandro (https://github.com/PSandro/SimpleConfig).
+ *
+ * @author PSandro on 26.01.19
+ * @author KennyTV
+ */
+public final class Config extends ConfigSection {
+
+    private static final String AWESOME_HEADER =
+            "#######################################################################################################################\n" +
+                    "#   __  __       _       _                                    _             _  __                     _______     __  #\n" +
+                    "#  |  \\/  | __ _(_)_ __ | |_ ___ _ __   __ _ _ __   ___ ___  | |__  _   _  | |/ /___ _ __  _ __  _   |_   _\\ \\   / /  #\n" +
+                    "#  | |\\/| |/ _` | | '_ \\| __/ _ \\ '_ \\ / _` | '_ \\ / __/ _ \\ | '_ \\| | | | | ' // _ \\ '_ \\| '_ \\| | | || |  \\ \\ / /   #\n" +
+                    "#  | |  | | (_| | | | | | ||  __/ | | | (_| | | | | (_|  __/ | |_) | |_| | | . \\  __/ | | | | | | |_| || |   \\ V /    #\n" +
+                    "#  |_|  |_|\\__,_|_|_| |_|\\__\\___|_| |_|\\__,_|_| |_|\\___\\___| |_.__/ \\__, | |_|\\_\\___|_| |_|_| |_|\\__, ||_|    \\_/     #\n" +
+                    "#                                                                   |___/                        |___/                #\n" +
+                    "#######################################################################################################################\n" +
+                    "# You can report bugs here: https://github.com/KennyTV/Maintenance/issues\n" +
+                    "# If you need any other help/support, you can also join my Discord server: https://discord.gg/vGCUzHq\n";
+    private final Yaml yaml = createYaml();
+    private final File file;
+    private final Set<String> unsupportedFields;
+    private Map<String, String[]> comments = new HashMap<>();
+    private String header;
+
+    public Config(final File file, final String... unsupportedFields) {
+        this.file = file;
+        this.unsupportedFields = new HashSet<>(Arrays.asList(unsupportedFields));
+    }
+
+    public void load() throws IOException {
+        final String data = new String(Files.readAllBytes(this.file.toPath()), StandardCharsets.UTF_8);
+        final Map<String, Object> map = yaml.load(data);
+        this.values = map != null ? map : new LinkedHashMap<>();
+        this.comments = ConfigSerializer.deserializeComments(data);
+        if (comments.containsKey(".header"))
+            this.header = String.join("\n", comments.remove(".header"));
+
+        final boolean removedFields = values.keySet().removeIf(key -> {
+            final String[] split = key.split("\\.");
+            String splitKey = "";
+            boolean remove = false;
+            for (final String s : split) {
+                splitKey += s;
+                if (!unsupportedFields.contains(splitKey)) {
+                    splitKey += ".";
+                    continue;
+                }
+                remove = true;
+                break;
+            }
+
+            if (remove)
+                comments.remove(key);
+            return remove;
+        });
+        if (removedFields) {
+            save();
+        }
+    }
+
+    public void save() throws IOException {
+        final byte[] bytes = this.saveConfigToString().getBytes(StandardCharsets.UTF_8);
+        this.file.getParentFile().mkdirs();
+        this.file.createNewFile();
+        Files.write(this.file.toPath(), bytes);
+    }
+
+    @Override
+    public void set(final String key, final Object value, final String... comments) {
+        if (value == null) {
+            remove(key);
+        } else {
+            this.values.put(key, value);
+            this.comments.put(key, comments);
+        }
+    }
+
+    @Override
+    public void remove(final String key) {
+        this.values.remove(key);
+        this.comments.remove(key);
+    }
+
+    /**
+     * Convenience method, not further established as currently not necessary.
+     *
+     * @see #getSection(String)
+     * @deprecated this config is only made for a quite simple use, only goes one level deeper
+     */
+    @Deprecated
+    public Object getDeep(final String key) {
+        final String[] split = key.split("\\.", 2);
+        if (split.length != 2) return get(key);
+
+        final Object o = getObject(split[0]);
+        if (!(o instanceof Map)) return null;
+
+        final Map<String, Object> map = (Map<String, Object>) o;
+        return map.get(split[1]);
+    }
+
+    public ConfigSection getSection(final String key) {
+        final Object o = getObject(key);
+        return o instanceof Map ? new ConfigSection((Map<String, Object>) o) : null;
+    }
+
+    private static Yaml createYaml() {
+        final DumperOptions options = new DumperOptions();
+        options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
+        options.setPrettyFlow(false);
+        options.setIndent(2);
+        return new Yaml(options);
+    }
+
+    public String saveConfigToString() {
+        return ConfigSerializer.serialize(this.header, this.values, this.comments, this.yaml);
+    }
+
+    public void clear() {
+        this.values.clear();
+        this.comments.clear();
+        this.header = null;
+    }
+
+    public Map<String, String[]> getComments() {
+        return comments;
+    }
+
+    public Set<String> getUnsupportedFields() {
+        return unsupportedFields;
+    }
+
+    public String getHeader() {
+        return header;
+    }
+
+    public void resetAwesomeHeader() {
+        this.header = AWESOME_HEADER;
+    }
+
+
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/config/ConfigSection.java

@@ -0,0 +1,141 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.config;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * Further modified version of the SimpleConfig project of PSandro (https://github.com/PSandro/SimpleConfig).
+ *
+ * @author KennyTV
+ */
+public class ConfigSection {
+
+    protected Map<String, Object> values;
+
+    ConfigSection() {
+        this(new HashMap<>());
+    }
+
+    ConfigSection(final Map<String, Object> values) {
+        this.values = values;
+    }
+
+    public <E> E get(final String key) {
+        return (E) this.values.get(key);
+    }
+
+    public Object getObject(final String key) {
+        return this.values.get(key);
+    }
+
+    public <E> E getOrSet(final String key, final E def) {
+        if (this.values.containsKey(key)) {
+            return (E) this.values.get(key);
+        } else {
+            this.set(key, def);
+            return def;
+        }
+    }
+
+    public boolean contains(final String key) {
+        return this.values.containsKey(key);
+    }
+
+    public void set(final String key, final Object value) {
+        if (value == null) {
+            remove(key);
+        } else
+            this.values.put(key, value);
+    }
+
+    public void set(final String key, final Object value, final String... comments) {
+        if (value == null) {
+            remove(key);
+        } else {
+            this.values.put(key, value);
+        }
+    }
+
+    public void remove(final String key) {
+        this.values.remove(key);
+    }
+
+    public Set<String> getKeys() {
+        return this.values.keySet();
+    }
+
+    public Map<String, Object> getValues() {
+        return this.values;
+    }
+
+    public boolean getBoolean(final String key) {
+        final Object o = values.get(key);
+        return o instanceof Boolean && (boolean) o;
+    }
+
+    public boolean getBoolean(final String key, final boolean def) {
+        return values.containsKey(key) ? get(key) : def;
+    }
+
+    public String getString(final String key) {
+        return get(key);
+    }
+
+    public String getString(final String key, final String def) {
+        return values.containsKey(key) ? get(key) : def;
+    }
+
+    public int getInt(final String key) {
+        final Object o = values.get(key);
+        return o instanceof Number ? ((Number) o).intValue() : 0;
+    }
+
+    public int getInt(final String key, final int def) {
+        return values.containsKey(key) ? get(key) : def;
+    }
+
+    public double getDouble(final String key) {
+        final Object o = values.get(key);
+        return o instanceof Number ? ((Number) o).doubleValue() : 0;
+    }
+
+    public double getDouble(final String key, final double def) {
+        return values.containsKey(key) ? get(key) : def;
+    }
+
+    public List<String> getStringList(final String key) {
+        return get(key);
+    }
+
+    public List<String> getStringList(final String key, final List<String> def) {
+        return values.containsKey(key) ? get(key) : def;
+    }
+
+    public List<Integer> getIntList(final String key) {
+        return get(key);
+    }
+
+    public List<Integer> getIntList(final String key, final List<Integer> def) {
+        return values.containsKey(key) ? get(key) : def;
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/config/ConfigSerializer.java

@@ -0,0 +1,143 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.config;
+
+import org.yaml.snakeyaml.Yaml;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.regex.Pattern;
+
+/**
+ * Further modified version of the SimpleConfig project of PSandro (https://github.com/PSandro/SimpleConfig).
+ *
+ * @author PSandro on 26.01.19
+ * @author KennyTV
+ */
+public final class ConfigSerializer {
+
+    private static final String[] EMPTY = new String[0];
+    private static final int INDENT_UNIT = 2;
+    private static final String PATH_SEPARATOR_STRING = ".";
+    private static final String PATH_SEPARATOR_QUOTED = Pattern.quote(PATH_SEPARATOR_STRING);
+
+    public static String serialize(final String header, final Map<String, Object> data, final Map<String, String[]> comments, final Yaml yaml) {
+        if (data.isEmpty()) return yaml.dump(null);
+
+        final String rawYaml = yaml.dump(data);
+        final StringBuilder fileData = new StringBuilder();
+        int currentIndents = 0;
+        String key = "";
+        for (final String line : rawYaml.split("\n")) {
+            if (line.isEmpty()) continue;
+
+            final int indent = getIndents(line);
+            final int indents = indent / INDENT_UNIT;
+
+            final String indentText = indent > 0 ? line.substring(0, indent) : "";
+            if (indents <= currentIndents) {
+                final String[] array = key.split(PATH_SEPARATOR_QUOTED);
+                final int backspace = currentIndents - indents + 1;
+                key = join(array, array.length - backspace);
+            }
+
+            final String separator = key.isEmpty() ? "" : PATH_SEPARATOR_STRING;
+            final String lineKey = line.contains(":") ? line.split(Pattern.quote(":"))[0] : line;
+            key += separator + lineKey.substring(indent);
+
+            currentIndents = indents;
+
+            final String[] strings = comments.get(key);
+            if (strings != null) {
+                for (final String comment : strings) {
+                    if (comment.isEmpty())
+                        fileData.append('\n');
+                    else
+                        fileData.append(indentText).append(comment).append('\n');
+                }
+            }
+
+            fileData.append(line).append('\n');
+        }
+        return header != null && !header.isEmpty() ? header + fileData : fileData.toString();
+    }
+
+    public static Map<String, String[]> deserializeComments(final String data) {
+        final Map<String, String[]> comments = new HashMap<>();
+        final List<String> currentComments = new ArrayList<>();
+        boolean header = true;
+        int currentIndents = 0;
+        String key = "";
+        for (final String line : data.split("\n")) {
+            final String s = line.trim();
+            if (s.startsWith("#")) {
+                currentComments.add(s);
+                continue;
+            }
+            if (header) {
+                if (!currentComments.isEmpty()) {
+                    currentComments.add("");
+                    comments.put(".header", currentComments.toArray(EMPTY));
+                    currentComments.clear();
+                }
+                header = false;
+            }
+            if (s.isEmpty()) {
+                currentComments.add(s);
+                continue;
+            }
+
+            final int indent = getIndents(line);
+            final int indents = indent / INDENT_UNIT;
+            if (indents <= currentIndents) {
+                final String[] array = key.split(PATH_SEPARATOR_QUOTED);
+                final int backspace = currentIndents - indents + 1;
+                key = join(array, array.length - backspace);
+            }
+
+            final String separator = key.isEmpty() ? "" : PATH_SEPARATOR_STRING;
+            final String lineKey = line.contains(":") ? line.split(Pattern.quote(":"))[0] : line;
+            key += separator + lineKey.substring(indent);
+            currentIndents = indents;
+
+            if (!currentComments.isEmpty()) {
+                comments.put(key, currentComments.toArray(EMPTY));
+                currentComments.clear();
+            }
+        }
+        return comments;
+    }
+
+    private static int getIndents(final String line) {
+        int count = 0;
+        for (int i = 0; i < line.length(); i++) {
+            if (line.charAt(i) == ' ') count++;
+            else break;
+        }
+        return count;
+    }
+
+    private static String join(final String[] array, final int length) {
+        final String[] copy = new String[length];
+        System.arraycopy(array, 0, copy, 0, length);
+        return String.join(PATH_SEPARATOR_STRING, copy);
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/dump/MaintenanceDump.java

@@ -0,0 +1,52 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.dump;
+
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonObject;
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.Settings;
+
+import java.io.File;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+public final class MaintenanceDump {
+    private final ServerDump general;
+    private final Map<String, Object> configuration;
+    private final JsonObject plugins;
+
+    public MaintenanceDump(final MaintenancePlugin plugin, final Settings settings) {
+        general = new ServerDump(plugin.getVersion(), plugin.getServerType().toString(), plugin.getServerVersion(), plugin.getMaintenanceServers());
+
+        configuration = new LinkedHashMap<>(settings.getConfig().getValues());
+        final Object o = configuration.get("mysql");
+        if (o instanceof Map) {
+            final Map<String, Object> map = new LinkedHashMap<>(((Map<String, Object>) o));
+            map.keySet().removeIf(key -> !key.equals("use-mysql") && !key.equals("update-interval"));
+            configuration.put("mysql", map);
+        }
+        configuration.put("whitelisted-players", settings.getWhitelistedPlayers());
+        configuration.put("icon-exists", new File(plugin.getDataFolder(), "maintenance-icon.png").exists());
+
+        final JsonObject jsonObject = new JsonObject();
+        jsonObject.add("plugins", new GsonBuilder().create().toJsonTree(plugin.getPlugins()));
+        plugins = jsonObject;
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/dump/PluginDump.java

@@ -0,0 +1,33 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.dump;
+
+import java.util.List;
+
+public final class PluginDump {
+    private final String name;
+    private final String version;
+    private final List<String> authors;
+
+    public PluginDump(final String name, final String version, final List<String> authors) {
+        this.name = name;
+        this.version = version;
+        this.authors = authors != null && authors.isEmpty() ? null : authors;
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/dump/ServerDump.java

@@ -0,0 +1,35 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.dump;
+
+import java.util.List;
+
+public final class ServerDump {
+    private final String pluginVersion;
+    private final String serverType;
+    private final String serverVersion;
+    private final List<String> maintenance;
+
+    public ServerDump(final String pluginVersion, final String serverType, final String serverVersion, final List<String> maintenance) {
+        this.pluginVersion = pluginVersion;
+        this.serverType = serverType;
+        this.serverVersion = serverVersion;
+        this.maintenance = maintenance;
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/hook/ServerListPlusHook.java

@@ -0,0 +1,36 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.hook;
+
+import net.minecrell.serverlistplus.core.ServerListPlusCore;
+import net.minecrell.serverlistplus.core.plugin.ServerListPlusPlugin;
+
+public final class ServerListPlusHook {
+    private final ServerListPlusCore serverListPlusCore;
+
+    public ServerListPlusHook(final Object serverListPlus) {
+        if (!(serverListPlus instanceof ServerListPlusPlugin))
+            throw new IllegalArgumentException("Couldn't parse ServerListPlus instance!");
+        this.serverListPlusCore = ((ServerListPlusPlugin) serverListPlus).getCore();
+    }
+
+    public void setEnabled(final boolean enable) {
+        serverListPlusCore.getProfiles().setEnabled(enable);
+    }
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/listener/JoinListenerBase.java

@@ -0,0 +1,79 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.listener;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.Settings;
+import eu.kennytv.maintenance.core.util.SenderInfo;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.UUID;
+
+public abstract class JoinListenerBase {
+    protected final MaintenancePlugin plugin;
+    protected final Settings settings;
+    protected final UUID notifyUuid = new UUID(-6334418481592579467L, -4779835342378829761L);
+    private final Set<UUID> notifiedPlayers = new HashSet<>();
+
+    protected JoinListenerBase(final MaintenancePlugin plugin, final Settings settings) {
+        this.plugin = plugin;
+        this.settings = settings;
+    }
+
+    /**
+     * Deals with the login and returns true if the player should be kicked after this method.
+     *
+     * @param sender wrapper of the joining player
+     * @return true if the sender should be kicked
+     */
+    protected boolean kickPlayer(final SenderInfo sender, final boolean updateCheck) {
+        if (settings.isMaintenance() && !sender.getUuid().equals(notifyUuid)) {
+            if (!sender.hasMaintenancePermission("bypass") && !settings.getWhitelistedPlayers().containsKey(sender.getUuid())) {
+                if (settings.isJoinNotifications())
+                    broadcastJoinNotification(sender.getName());
+                return true;
+            }
+        }
+        if (updateCheck)
+            updateCheck(sender);
+        return false;
+    }
+
+    protected boolean kickPlayer(final SenderInfo sender) {
+        return kickPlayer(sender, true);
+    }
+
+    protected void updateCheck(final SenderInfo sender) {
+        if (sender.getUuid().equals(notifyUuid)) {
+            sender.sendMessage("§6Maintenance §aVersion " + plugin.getVersion());
+            return;
+        }
+        if (!settings.hasUpdateChecks()) return;
+        if (!sender.hasPermission("maintenance.admin") || notifiedPlayers.contains(sender.getUuid())) return;
+        plugin.async(() -> {
+            if (!plugin.updateAvailable()) return;
+            notifiedPlayers.add(sender.getUuid());
+            sender.sendMessage(plugin.getPrefix() + "§cThere is a newer version available: §aVersion " + plugin.getNewestVersion() + "§c, you're on §a" + plugin.getVersion());
+            plugin.sendUpdateNotification(sender);
+        });
+    }
+
+    protected abstract void broadcastJoinNotification(String name);
+}

maintenance-core/src/main/java/eu/kennytv/maintenance/core/runnable/MaintenanceRunnable.java

@@ -0,0 +1,44 @@
+/*
+ * Maintenance - https://git.io/maintenancemode
+ * Copyright (C) 2018 KennyTV (https://github.com/KennyTV)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package eu.kennytv.maintenance.core.runnable;
+
+import eu.kennytv.maintenance.core.MaintenancePlugin;
+import eu.kennytv.maintenance.core.Settings;
+
+public final class MaintenanceRunnable extends MaintenanceRunnableBase {
+
+    public MaintenanceRunnable(final MaintenancePlugin plugin, final Settings settings, final int minutes, final boolean enable) {
+        super(plugin, settings, minutes, enable);
+    }
+
+    @Override
+    protected void finish() {
+        plugin.setMaintenance(enable);
+    }
+
+    @Override
+    protected String startMessageKey() {
+        return settings.getMessage("starttimerBroadcast").replace("%TIME%", getTime());
+    }
+
+    @Override
+    protected String endMessageKey() {
+        return settings.getMessage("endtimerBroadcast").replace("%TIME%", getTime());
+    }
+}