display list of genres on main activity

app/src/main/java/com/kabouzeid/gramophone/adapter/GenreAdapter.java

@@ -91,7 +91,7 @@ public class GenreAdapter extends RecyclerView.Adapter<GenreAdapter.ViewHolder>
     @Override
     public String getSectionName(int position) {
         final Genre genre = dataSet.get(position);
-        return genre.id == -1 ? "" : MusicUtil.getSectionName(dataSet.get(position).name);
+        return genre.id.hashCode() == -1 ? "" : MusicUtil.getSectionName(dataSet.get(position).name);
     }
 
     public class ViewHolder extends MediaEntryViewHolder {

app/src/main/java/com/kabouzeid/gramophone/model/Genre.java

@@ -3,13 +3,21 @@ package com.kabouzeid.gramophone.model;
 import android.os.Parcel;
 import android.os.Parcelable;
 
+import org.jellyfin.apiclient.model.dto.BaseItemDto;
+
 public class Genre implements Parcelable {
-    public final int id;
+    public final String id;
     public final String name;
     public final int songCount;
 
+    public Genre(BaseItemDto itemDto) {
+        this.id = itemDto.getId();
+        this.name = itemDto.getName();
+        this.songCount = itemDto.getSongCount() != null ? itemDto.getSongCount() : 0;
+    }
+
     public Genre(final int id, final String name, final int songCount) {
-        this.id = id;
+        this.id = Integer.toString(id);
         this.name = name;
         this.songCount = songCount;
     }
@@ -28,12 +36,12 @@ public class Genre implements Parcelable {
 
     @Override
     public int hashCode() {
-        return id;
+        return id.hashCode();
     }
 
     @Override
     public String toString() {
-        return Integer.toString(id);
+        return id;
     }
 
     @Override
@@ -43,13 +51,13 @@ public class Genre implements Parcelable {
 
     @Override
     public void writeToParcel(Parcel dest, int flags) {
-        dest.writeInt(this.id);
+        dest.writeString(this.id);
         dest.writeString(this.name);
         dest.writeInt(this.songCount);
     }
 
     protected Genre(Parcel in) {
-        this.id = in.readInt();
+        this.id = in.readString();
         this.name = in.readString();
         this.songCount = in.readInt();
     }

app/src/main/java/com/kabouzeid/gramophone/ui/activities/GenreDetailActivity.java

@@ -201,7 +201,7 @@ public class GenreDetailActivity extends AbsSlidingMusicPanelActivity implements
 
         @Override
         public List<Song> loadInBackground() {
-            return GenreLoader.getSongs(getContext(), genre.id);
+            return GenreLoader.getSongs(getContext(), genre.id.hashCode());
         }
     }
 }

app/src/main/java/com/kabouzeid/gramophone/ui/activities/MainActivity.java

@@ -153,9 +153,6 @@ public class MainActivity extends AbsSlidingMusicPanelActivity {
                         libraries = (List<BaseItemDto>) media;
                         menu.clear();
 
-                        menu.add(R.id.navigation_drawer_menu_category_sections, R.id.nav_library, menu.size(), R.string.all);
-                        menu.getItem(0).setIcon(R.drawable.ic_library_music_white_24dp);
-
                         for (BaseItemDto itemDto : libraries) {
                             if (itemDto.getCollectionType() == null || !itemDto.getCollectionType().equals("music")) continue;
                             menu.add(R.id.navigation_drawer_menu_category_sections, itemDto.getId().hashCode(), menu.size(), itemDto.getName());

app/src/main/java/com/kabouzeid/gramophone/ui/fragments/mainactivity/library/pager/GenresFragment.java

@@ -1,30 +1,22 @@
 package com.kabouzeid.gramophone.ui.fragments.mainactivity.library.pager;
 
-import android.content.Context;
 import android.os.Bundle;
 import androidx.annotation.NonNull;
-import androidx.loader.app.LoaderManager;
-import androidx.loader.content.Loader;
 import androidx.recyclerview.widget.LinearLayoutManager;
 
 import com.kabouzeid.gramophone.R;
 import com.kabouzeid.gramophone.adapter.GenreAdapter;
-import com.kabouzeid.gramophone.interfaces.LoaderIds;
+import com.kabouzeid.gramophone.interfaces.MediaCallback;
-import com.kabouzeid.gramophone.loader.GenreLoader;
-import com.kabouzeid.gramophone.misc.WrappedAsyncTaskLoader;
 import com.kabouzeid.gramophone.model.Genre;
+import com.kabouzeid.gramophone.util.QueryUtil;
 
 import java.util.ArrayList;
 import java.util.List;
 
-public class GenresFragment extends AbsLibraryPagerRecyclerViewFragment<GenreAdapter, LinearLayoutManager> implements LoaderManager.LoaderCallbacks<List<Genre>> {
+public class GenresFragment extends AbsLibraryPagerRecyclerViewFragment<GenreAdapter, LinearLayoutManager> {
-
-    private static final int LOADER_ID = LoaderIds.GENRES_FRAGMENT;
-
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
-        getLoaderManager().initLoader(LOADER_ID, null, this);
     }
 
     @NonNull
@@ -39,6 +31,14 @@ public class GenresFragment extends AbsLibraryPagerRecyclerViewFragment<GenreAda
         List<Genre> dataSet = getAdapter() == null ? new ArrayList<>() : getAdapter().getDataSet();
 
         GenreAdapter adapter = new GenreAdapter(getLibraryFragment().getMainActivity(), dataSet, R.layout.item_list_no_image);
+        QueryUtil.getGenres(new MediaCallback() {
+            @Override
+            public void onLoadMedia(List<?> media) {
+                dataSet.addAll((List<Genre>) media);
+                adapter.notifyDataSetChanged();
+            }
+        });
+
         return adapter;
     }
 
@@ -49,33 +49,5 @@ public class GenresFragment extends AbsLibraryPagerRecyclerViewFragment<GenreAda
 
     @Override
     public void onMediaStoreChanged() {
-        getLoaderManager().restartLoader(LOADER_ID, null, this);
-    }
-
-    @Override
-    @NonNull
-    public Loader<List<Genre>> onCreateLoader(int id, Bundle args) {
-        return new GenresFragment.AsyncGenreLoader(getActivity());
-    }
-
-    @Override
-    public void onLoadFinished(@NonNull Loader<List<Genre>> loader, List<Genre> data) {
-        getAdapter().swapDataSet(data);
-    }
-
-    @Override
-    public void onLoaderReset(@NonNull Loader<List<Genre>> loader) {
-        getAdapter().swapDataSet(new ArrayList<>());
-    }
-
-    private static class AsyncGenreLoader extends WrappedAsyncTaskLoader<List<Genre>> {
-        public AsyncGenreLoader(Context context) {
-            super(context);
-        }
-
-        @Override
-        public List<Genre> loadInBackground() {
-            return GenreLoader.getAllGenres(getContext());
-        }
     }
 }

app/src/main/java/com/kabouzeid/gramophone/util/QueryUtil.java

@@ -4,12 +4,14 @@ import com.kabouzeid.gramophone.App;
 import com.kabouzeid.gramophone.interfaces.MediaCallback;
 import com.kabouzeid.gramophone.model.Album;
 import com.kabouzeid.gramophone.model.Artist;
+import com.kabouzeid.gramophone.model.Genre;
 import com.kabouzeid.gramophone.model.Song;
 
 import org.jellyfin.apiclient.interaction.Response;
 import org.jellyfin.apiclient.model.dto.BaseItemDto;
 import org.jellyfin.apiclient.model.querying.ArtistsQuery;
 import org.jellyfin.apiclient.model.querying.ItemQuery;
+import org.jellyfin.apiclient.model.querying.ItemsByNameQuery;
 import org.jellyfin.apiclient.model.querying.ItemsResult;
 
 import java.util.ArrayList;
@@ -37,6 +39,30 @@ public class QueryUtil {
         });
     }
 
+    public static void getGenres(MediaCallback callback) {
+        ItemsByNameQuery query = new ItemsByNameQuery();
+        query.setUserId(App.getApiClient().getCurrentUserId());
+        query.setLimit(100);
+        query.setRecursive(true);
+        if (currentLibrary != null && query.getParentId() == null) query.setParentId(currentLibrary.getId());
+        App.getApiClient().GetGenresAsync(query, new Response<ItemsResult>() {
+            @Override
+            public void onResponse(ItemsResult result) {
+                List<Genre> genres = new ArrayList<>();
+                for (BaseItemDto itemDto : result.getItems()) {
+                    genres.add(new Genre(itemDto));
+                }
+
+                callback.onLoadMedia(genres);
+            }
+
+            @Override
+            public void onError(Exception exception) {
+                exception.printStackTrace();
+            }
+        });
+    }
+
     public static void getAlbums(ItemQuery query, MediaCallback callback) {
         query.setIncludeItemTypes(new String[]{"MusicAlbum"});
         query.setUserId(App.getApiClient().getCurrentUserId());

app/src/main/res/menu/menu_drawer.xml

@@ -7,7 +7,7 @@
         <item
             android:id="@+id/nav_library"
             android:icon="@drawable/ic_library_music_white_24dp"
-            android:title="@string/library" />
+            android:title="@string/all" />
     </group>
 
     <group