src/main/java/me/eccentric_nz/gamemodeinventories/GameModeInventories.java

@@ -1,6 +1,7 @@
 package me.eccentric_nz.gamemodeinventories;
 
 import com.zaxxer.hikari.HikariDataSource;
+import java.io.File;
 import java.sql.Connection;
 import java.sql.SQLException;
 import java.util.ArrayList;
@@ -15,6 +16,8 @@ import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.Material;
 import org.bukkit.World;
+import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.configuration.file.YamlConfiguration;
 import org.bukkit.plugin.PluginManager;
 import org.bukkit.plugin.java.JavaPlugin;
 import org.bukkit.scheduler.BukkitTask;
@@ -36,6 +39,7 @@ public class GameModeInventories extends JavaPlugin {
     private GMIDebug db_level;
     private String prefix;
     private HikariDataSource dataSource;
+    private FileConfiguration canonicalConfig;
 
     @Override
     public void onDisable() {
@@ -54,6 +58,11 @@ public class GameModeInventories extends JavaPlugin {
     public void onEnable() {
         plugin = this;
         PluginManager pm = Bukkit.getServer().getPluginManager();
+        loadCanonicalConfig();
+        if (canonicalConfig == null) {
+            pm.disablePlugin(this);
+            return;
+        }
         Version bukkitversion = getServerVersion(getServer().getVersion());
         Version minversion = new Version("1.13");
         // check CraftBukkit version
@@ -122,6 +131,26 @@ public class GameModeInventories extends JavaPlugin {
         }
     }
 
+    private void loadCanonicalConfig() {
+        File configFile = new File(getDataFolder(), "config.yml");
+        if (!configFile.exists()) {
+            getLogger()
+                    .log(
+                            Level.SEVERE,
+                            "config.yml was not found at "
+                                    + configFile.getAbsolutePath()
+                                    + ". This plugin only reads config.yml and will not generate or modify it.");
+            canonicalConfig = null;
+            return;
+        }
+        canonicalConfig = YamlConfiguration.loadConfiguration(configFile);
+    }
+
+    @Override
+    public FileConfiguration getConfig() {
+        return (canonicalConfig != null) ? canonicalConfig : super.getConfig();
+    }
+
     private Version getServerVersion(String s) {
         Pattern pat = Pattern.compile("\\((.+?)\\)", Pattern.DOTALL);
         Matcher mat = pat.matcher(s);

src/main/java/me/eccentric_nz/gamemodeinventories/GameModeInventoriesConfig.java

@@ -10,7 +10,6 @@ import java.util.List;
 import java.util.Map;
 import java.util.logging.Level;
 import org.bukkit.configuration.file.FileConfiguration;
-import org.bukkit.configuration.file.YamlConfiguration;
 
 /**
  * @author eccentric_nz
@@ -18,7 +17,6 @@ import org.bukkit.configuration.file.YamlConfiguration;
 public class GameModeInventoriesConfig {
 
     private final GameModeInventories plugin;
-    private final FileConfiguration config;
     private final File configFile;
     HashMap<String, String> strOptions = new HashMap<>();
     HashMap<String, Integer> intOptions = new HashMap<>();
@@ -32,7 +30,6 @@ public class GameModeInventoriesConfig {
     public GameModeInventoriesConfig(GameModeInventories plugin) {
         this.plugin = plugin;
         configFile = new File(plugin.getDataFolder(), "config.yml");
-        config = YamlConfiguration.loadConfiguration(configFile);
         // string
         strOptions.put("debug_level", "ERROR");
         strOptions.put("storage.mysql.server", "localhost");
@@ -142,6 +139,16 @@ public class GameModeInventoriesConfig {
     }
 
     public void checkConfig() {
+        if (!configFile.exists()) {
+            plugin.getLogger()
+                    .log(
+                            Level.SEVERE,
+                            "config.yml was not found at "
+                                    + configFile.getAbsolutePath()
+                                    + ". This plugin only reads config.yml and will not generate or modify it.");
+            return;
+        }
+        FileConfiguration config = plugin.getConfig();
         int missing = 0;
         // string values
         for (Map.Entry<String, String> entry : strOptions.entrySet()) {