Support worlds being deleted mid-game.

pom.xml

@@ -50,6 +50,11 @@
             <artifactId>jansi</artifactId>
             <version>1.17.1</version>
         </dependency>
+        <dependency>
+            <groupId>com.onarandombox.multiversecore</groupId>
+            <artifactId>Multiverse-Core</artifactId>
+            <version>2.5.0</version>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/com/gmail/bleedobsidian/itemcase/ConfigurationFile.java

@@ -123,6 +123,23 @@ public class ConfigurationFile {
         this.file = YamlConfiguration.loadConfiguration(inputStreamReader);
     }
     
+    /**
+     * Delete this configuration file, non-jar only.
+     * 
+     * @param plugin JavaPlugin.
+     */
+    public void delete(JavaPlugin plugin) {
+        
+        // Create file reference.
+        File fileReference = new File(plugin.getDataFolder(), this.name);
+        
+        // Nullify reference.
+        this.file = null;
+        
+        // Delete file.
+        fileReference.delete();
+    }
+    
     /**
      * Attempt to copy the default configuration file from the given plugin's
      * jar to the data folder.

src/main/java/com/gmail/bleedobsidian/itemcase/configurations/WorldFile.java

@@ -17,16 +17,21 @@ package com.gmail.bleedobsidian.itemcase.configurations;
 import com.gmail.bleedobsidian.itemcase.ConfigurationFile;
 import com.gmail.bleedobsidian.itemcase.ItemCaseCore;
 import com.gmail.bleedobsidian.itemcase.Itemcase;
+import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import org.apache.commons.multiverse.io.FileUtils;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.World;
 import org.bukkit.inventory.ItemStack;
+import org.bukkit.plugin.java.JavaPlugin;
 
 /**
  * A configuration file that holds all Itemcase saves for a specific world.
@@ -161,4 +166,22 @@ public class WorldFile extends ConfigurationFile {
         // Return list of loaded itemcases.
         return itemcases;
     }
+    
+    /**
+     * Delete directory and config.
+     * 
+     * @throws IOException
+     */
+    public void deleteDirectory() throws IOException {
+        
+        // Create file reference.
+        File fileReference = new File(ItemCaseCore.instance.getDataFolder(),
+                this.world.getName());
+        
+        // Nullify reference.
+        this.file = null;
+            
+        // Delete directory.
+        FileUtils.deleteDirectory(fileReference);
+    }
 }

src/main/java/com/gmail/bleedobsidian/itemcase/managers/ItemcaseManager.java

@@ -17,9 +17,13 @@ package com.gmail.bleedobsidian.itemcase.managers;
 import com.gmail.bleedobsidian.itemcase.ItemCaseCore;
 import com.gmail.bleedobsidian.itemcase.Itemcase;
 import com.gmail.bleedobsidian.itemcase.configurations.WorldFile;
+import com.onarandombox.MultiverseCore.event.MVWorldDeleteEvent;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.Map.Entry;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.OfflinePlayer;
@@ -260,6 +264,36 @@ public final class ItemcaseManager {
             // Request itemcases to be loaded.
             ItemcaseManager.this.loadItemcases(world);
         }
+        
+        @EventHandler(priority = EventPriority.MONITOR)
+        public void onWorldDeleteEvent(MVWorldDeleteEvent event) {
+            
+            // Get world name.
+            String worldName = event.getWorld().getName();
+            
+            // For every entry.
+            for(Entry<World, WorldFile> entry :
+                ItemcaseManager.this.worldFiles.entrySet()) {
+                
+                // Check if world name matches.
+                if(entry.getKey().getName() == worldName) {
+                    
+                    // Attempt to delete config.
+                    try {
+                        
+                        // Delete config.
+                        entry.getValue().deleteDirectory();
+                        
+                    } catch (IOException e) {
+                        
+                         // Log error.
+                        ItemCaseCore.instance.getConsoleLogger().severe(
+                            "Failed to delete itemcase config for world:"
+                                    + worldName, e);
+                    }
+                }
+            }
+        }
     }
     
 }