invert cached tracks list

app/src/main/java/ru/vtosters/lite/music/cache/helpers/TracklistHelper.java

@@ -12,6 +12,7 @@ import ru.vtosters.lite.music.cache.FileCacheImplementation;
 import java.io.File;
 import java.net.MalformedURLException;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 public class TracklistHelper {
@@ -31,11 +32,15 @@ public class TracklistHelper {
         return CacheDatabaseDelegate.getTracksByAlbumOne(id);
     }
 
-    public static JSONArray tracksToIds(List<MusicTrack> tracks) {
+    public static JSONArray tracksToIds(List<MusicTrack> tracks, boolean invertList) {
         var arr = new JSONArray();
+
+        if (!invertList) Collections.shuffle(tracks);
+
         for (MusicTrack track : tracks) {
             arr.put(track.y1());
         }
+
         return arr;
     }
 

app/src/main/java/ru/vtosters/lite/music/cache/injectors/TracklistInjector.java

@@ -11,6 +11,7 @@ import io.reactivex.ObservableOnSubscribe;
 import org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;
+import ru.vtosters.hooks.other.Preferences;
 import ru.vtosters.lite.music.cache.CacheDatabaseDelegate;
 import ru.vtosters.lite.music.cache.helpers.PlaylistHelper;
 import ru.vtosters.lite.music.cache.helpers.TracklistHelper;
@@ -232,7 +233,7 @@ public class TracklistInjector {
                 .put("id", getRandomId())
                 .put("data_type", "music_audios")
                 .put("url", "synth:cache:list")
-                .put("audios_ids", TracklistHelper.tracksToIds(tracks));
+                .put("audios_ids", TracklistHelper.tracksToIds(tracks, Preferences.getBoolValue("invertCachedTracks", false)));
 
         var layout = new JSONObject()
                 .put("name", "list")

app/src/main/java/ru/vtosters/lite/ui/fragments/MediaFragment.java

@@ -123,6 +123,8 @@ public class MediaFragment extends TrackedMaterialPreferenceToolbarFragment {
             return true;
         });
 
+        findPreference("invertCachedTracks").setVisible(CacheDatabaseDelegate.hasTracks());
+
         if (!LibVKXClient.isVkxInstalled()) {
             findPreference("vkx_sett").setVisible(false);
         }