refactor AddonDownloader

Author: HSGamer

src/main/java/me/hsgamer/bettergui/BetterGUI.java

@@ -65,9 +65,6 @@ protected List<Object> getComponents() {
       return menu.getVariableManager().setVariables(StringReplacerApplier.normalizeQuery(variable), uuid);
     }));
 
-    AddonManager addonManager = new AddonManager(this);
-    AddonDownloader addonDownloader = new AddonDownloader(this, addonManager);
-
     List<Object> components = new ArrayList<>(Arrays.asList(
       variableBundle,
 
@@ -87,10 +84,10 @@ protected List<Object> getComponents() {
       ConfigGenerator.newInstance(MessageConfig.class, new BukkitConfig(this, "messages.yml")),
       new TemplateConfig(this),
 
-      addonManager,
+      new AddonManager(this),
       new MenuManager(this),
       new MenuCommandManager(this),
-      addonDownloader
+      new AddonDownloader(this)
     ));
 
     if (Bukkit.getPluginManager().getPlugin("PlaceholderAPI") != null) {

src/main/java/me/hsgamer/bettergui/downloader/AddonDownloader.java

@@ -8,33 +8,40 @@
 import me.hsgamer.hscore.downloader.json.JsonDownloadInfoLoader;
 import me.hsgamer.hscore.downloader.webstream.WebInputStreamLoader;
 
-public class AddonDownloader extends Downloader implements PostEnable {
+public class AddonDownloader implements PostEnable {
   private final BetterGUI plugin;
-  private final AddonManager addonManager;
+  private Downloader downloader;
 
-  public AddonDownloader(BetterGUI plugin, AddonManager addonManager) {
-    super(
-      new JsonDownloadInfoLoader("https://raw.githubusercontent.com/BetterGUI-MC/Addon-List/master/addons.json"),
-      new WebInputStreamLoader(),
-      addonManager.getExpansionsDir()
-    );
+  public AddonDownloader(BetterGUI plugin) {
     this.plugin = plugin;
-    this.addonManager = addonManager;
   }
 
   @Override
-  public void onLoaded() {
-    for (DownloadInfo downloadInfo : getLoadedDownloadInfo().values()) {
-      addonManager.getExpansionClassLoader(downloadInfo.getName()).ifPresent(loader -> {
-        if (!loader.getDescription().getVersion().equals(downloadInfo.getVersion())) {
-          plugin.getLogger().warning(() -> "The addon '" + downloadInfo.getName() + "' has a new update. New Version: " + downloadInfo.getVersion());
+  public void postEnable() {
+    AddonManager addonManager = plugin.get(AddonManager.class);
+    this.downloader = new Downloader(
+      new JsonDownloadInfoLoader("https://raw.githubusercontent.com/BetterGUI-MC/Addon-List/master/addons.json"),
+      new WebInputStreamLoader(),
+      addonManager.getExpansionsDir()
+    ) {
+      @Override
+      public void onLoaded() {
+        for (DownloadInfo downloadInfo : getLoadedDownloadInfo().values()) {
+          addonManager.getExpansionClassLoader(downloadInfo.getName()).ifPresent(loader -> {
+            if (!loader.getDescription().getVersion().equals(downloadInfo.getVersion())) {
+              plugin.getLogger().warning(() -> "The addon '" + downloadInfo.getName() + "' has a new update. New Version: " + downloadInfo.getVersion());
+            }
+          });
         }
-      });
-    }
+      }
+    };
+    this.downloader.setup();
   }
 
-  @Override
-  public void postEnable() {
-    setup();
+  public Downloader getDownloader() {
+    if (downloader == null) {
+      throw new IllegalStateException("The downloader is not initialized yet");
+    }
+    return downloader;
   }
 }

src/main/java/me/hsgamer/bettergui/menu/AddonMenu.java

@@ -70,7 +70,7 @@ protected ButtonMap createButtonMap() {
       @Override
       public @NotNull Map<@NotNull Integer, @NotNull DisplayButton> getButtons(@NotNull UUID uuid, InventorySize inventorySize) {
         Map<Integer, DisplayButton> buttonMap = new HashMap<>();
-        Collection<DownloadInfo> downloadInfos = getInstance().get(AddonDownloader.class).getLoadedDownloadInfo().values();
+        Collection<DownloadInfo> downloadInfos = getInstance().get(AddonDownloader.class).getDownloader().getLoadedDownloadInfo().values();
         int slot = 0;
         for (DownloadInfo info : downloadInfos) {
           AddonButton button = addonButtonMap.computeIfAbsent(info, downloadInfo -> {