尝试添加purge功能

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>cn.lunadeer</groupId>
     <artifactId>ColorfulMap</artifactId>
-    <version>2.5</version>
+    <version>2.6</version>
     <packaging>jar</packaging>
 
     <name>ColorfulMap</name>

src/main/java/cn/lunadeer/colorfulmap/ColorfulMap.java

@@ -1,5 +1,6 @@
 package cn.lunadeer.colorfulmap;
 
+import cn.lunadeer.colorfulmap.commands.Purge;
 import cn.lunadeer.colorfulmap.commands.Reload;
 import cn.lunadeer.colorfulmap.commands.ToMap;
 import cn.lunadeer.colorfulmap.utils.*;
@@ -22,6 +23,7 @@ public final class ColorfulMap extends JavaPlugin {
 
         Objects.requireNonNull(Bukkit.getPluginCommand("tomap")).setExecutor(new ToMap());
         Objects.requireNonNull(Bukkit.getPluginCommand("reloadColorfulMap")).setExecutor(new Reload());
+        Objects.requireNonNull(Bukkit.getPluginCommand("purgeColorfulMap")).setExecutor(new Purge());
 
         Bukkit.getPluginManager().registerEvents(new Events(), this);
 

src/main/java/cn/lunadeer/colorfulmap/MapManager.java

@@ -122,6 +122,27 @@ public class MapManager implements Listener {
         return savedImages.get(world_name.getName()).get(id);
     }
 
+    public List<Integer> getMapIds(World world) {
+        if (!savedImages.containsKey(world.getName())) {
+            return new ArrayList<>();
+        }
+        return new ArrayList<>(savedImages.get(world.getName()).keySet());
+    }
+
+    public void removeMap(World world, Integer id) {
+        if (!savedImages.containsKey(world.getName())) {
+            return;
+        }
+        FileConfiguration config = dataFile.getConfig();
+        String path = config.getString(world.getName() + "." + id);
+        if (path == null) {
+            return;
+        }
+        new File(path).delete();
+        config.set(world.getName() + "." + id, null);
+        dataFile.saveConfig();
+        savedImages.get(world.getName()).remove(id);
+    }
 
     static class MapsFile {
 

src/main/java/cn/lunadeer/colorfulmap/StorageMaps.java

@@ -110,4 +110,35 @@ public class StorageMaps {
             return null;
         }
     }
+
+    public static void purgeStorageFolder() {
+        File[] map_folders = new File(data_folder, "maps").listFiles();
+        if (map_folders == null) {
+            return;
+        }
+        for (File map_folder : map_folders) {
+            if (!map_folder.isDirectory()) {
+                continue;
+            }
+            File[] files = map_folder.listFiles();
+            if (files == null) {
+                return;
+            }
+            if (files.length == 0) {
+                map_folder.delete();
+                continue;
+            }
+            if (files.length == 3) {
+                for (File file : files) {
+                    if (!file.getName().equals("meta.txt") && !file.getName().equals("raw.png") && !file.getName().equals("thumb.png")) {
+                        return;
+                    }
+                }
+                for (File file : files) {
+                    file.delete();
+                }
+                map_folder.delete();
+            }
+        }
+    }
 }

src/main/java/cn/lunadeer/colorfulmap/commands/Purge.java

@@ -0,0 +1,49 @@
+package cn.lunadeer.colorfulmap.commands;
+
+import cn.lunadeer.colorfulmap.ColorfulMap;
+import cn.lunadeer.colorfulmap.MapManager;
+import cn.lunadeer.colorfulmap.StorageMaps;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Item;
+import org.bukkit.entity.ItemFrame;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.map.MapView;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Purge implements CommandExecutor {
+    @Override
+    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
+        ColorfulMap.instance.getServer().getWorlds().forEach(world -> {
+            List<Integer> worldMapIds = new ArrayList<>();
+            world.getEntities().forEach(entity -> {
+                if (!(entity instanceof org.bukkit.entity.ItemFrame)) {
+                    return;
+                }
+                ItemFrame itemFrame = (ItemFrame) entity;
+                if (!itemFrame.getItem().getType().equals(org.bukkit.Material.FILLED_MAP)) {
+                    return;
+                }
+                ItemStack item = itemFrame.getItem();
+                MapView mapView = ((org.bukkit.inventory.meta.MapMeta) item.getItemMeta()).getMapView();
+                if (mapView == null) {
+                    return;
+                }
+                worldMapIds.add(mapView.getId());
+            });
+            List<Integer> currentIds = MapManager.instance.getMapIds(world);
+            for (Integer id : currentIds) {
+                if (!worldMapIds.contains(id)) {
+                    MapManager.instance.removeMap(world, id);
+                }
+            }
+        });
+        StorageMaps.purgeStorageFolder();
+        MapManager.instance.reloadImages();
+        return true;
+    }
+}

src/main/resources/plugin.yml

@@ -13,6 +13,10 @@ commands:
     description: 重载ColorfulMap配置
     usage: /reloadColorfulMap
     permission: colorfulmap.reload
+  purgeColorfulMap:
+    description: 清除无效的地图画
+    usage: /purgeColorfulMap
+    permission: colorfulmap.purge
 permissions:
   colorfulmap.tomap:
     description: 允许使用/tomap命令
@@ -20,3 +24,6 @@ permissions:
   colorfulmap.reload:
     description: 允许使用/reloadColorfulMap命令
     default: op
+  colorfulmap.purge:
+    description: 允许使用/purgeColorfulMap命令
+    default: op