Revert code format change

app/src/main/java/com/cappielloantonio/tempo/repository/PlaylistRepository.java

@@ -73,6 +73,29 @@ public class PlaylistRepository {
         return listLivePlaylistSongs;
     }
 
+    public MutableLiveData<Boolean> isSongInPlaylist(String playlistId, String songId) {
+        MutableLiveData<Boolean> songInPlayList = new MutableLiveData<>();
+
+        App.getSubsonicClientInstance(false)
+                .getPlaylistClient()
+                .getPlaylist(playlistId)
+                .enqueue(new Callback<ApiResponse>() {
+                    @Override
+                    public void onResponse(@NonNull Call<ApiResponse> call, @NonNull Response<ApiResponse> response) {
+                        if (response.isSuccessful() && response.body() != null && response.body().getSubsonicResponse().getPlaylist() != null && response.body().getSubsonicResponse().getPlaylist().getEntries() != null) {
+                            List<Child> songs = response.body().getSubsonicResponse().getPlaylist().getEntries();
+                            songInPlayList.setValue(songs.stream().anyMatch(s -> s.getId().equals(songId)));
+                        }
+                    }
+
+                    @Override
+                    public void onFailure(@NonNull Call<ApiResponse> call, @NonNull Throwable t) {
+                    }
+                });
+
+        return songInPlayList;
+    }
+
     public void addSongToPlaylist(String playlistId, ArrayList<String> songsId) {
         App.getSubsonicClientInstance(false)
                 .getPlaylistClient()

app/src/main/java/com/cappielloantonio/tempo/ui/dialog/PlaylistChooserDialog.java

@@ -12,6 +12,7 @@ import androidx.recyclerview.widget.LinearLayoutManager;
 import com.cappielloantonio.tempo.R;
 import com.cappielloantonio.tempo.databinding.DialogPlaylistChooserBinding;
 import com.cappielloantonio.tempo.interfaces.ClickCallback;
+import com.cappielloantonio.tempo.interfaces.DialogClickCallback;
 import com.cappielloantonio.tempo.subsonic.models.Playlist;
 import com.cappielloantonio.tempo.ui.adapter.PlaylistDialogHorizontalAdapter;
 import com.cappielloantonio.tempo.util.Constants;
@@ -98,7 +99,23 @@ public class PlaylistChooserDialog extends DialogFragment implements ClickCallba
     @Override
     public void onPlaylistClick(Bundle bundle) {
         Playlist playlist = bundle.getParcelable(Constants.PLAYLIST_OBJECT);
-        playlistChooserViewModel.addSongToPlaylist(playlist.getId());
-        dismiss();
+
+        playlistChooserViewModel.isSongInPlaylist(Objects.requireNonNull(playlist).getId(), requireActivity()).observe(requireActivity(), songInPlaylist -> {
+            if (songInPlaylist) {
+                playlistChooserViewModel.addSongToPlaylist(playlist.getId());
+                dismiss();
+            } else {
+                PlaylistDuplicateSongDialog playlistDuplicateSongDialog = new PlaylistDuplicateSongDialog(playlist,
+                        playlistChooserViewModel.getSongToAdd(),
+                        new DialogClickCallback() {
+                            @Override
+                            public void onPositiveClick() {
+                                playlistChooserViewModel.addSongToPlaylist(playlist.getId());
+                                dismiss();
+                            }
+                        });
+                playlistDuplicateSongDialog.show(getActivity().getSupportFragmentManager(), null);
+            }
+        });
     }
 }

app/src/main/java/com/cappielloantonio/tempo/ui/dialog/PlaylistDuplicateSongDialog.java

@@ -0,0 +1,70 @@
+package com.cappielloantonio.tempo.ui.dialog;
+
+import android.app.Dialog;
+import android.os.Bundle;
+import android.widget.Button;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.DialogFragment;
+
+import com.cappielloantonio.tempo.R;
+import com.cappielloantonio.tempo.databinding.DialogPlaylistDuplicateSongBinding;
+import com.cappielloantonio.tempo.interfaces.DialogClickCallback;
+import com.cappielloantonio.tempo.subsonic.models.Child;
+import com.cappielloantonio.tempo.subsonic.models.Playlist;
+import com.google.android.material.dialog.MaterialAlertDialogBuilder;
+
+public class PlaylistDuplicateSongDialog extends DialogFragment {
+
+    private final Playlist playlist;
+
+    private final Child song;
+
+    private final DialogClickCallback dialogClickCallback;
+
+    public PlaylistDuplicateSongDialog(Playlist playlist, Child song, DialogClickCallback dialogClickCallback) {
+        this.playlist = playlist;
+        this.song = song;
+        this.dialogClickCallback = dialogClickCallback;
+    }
+
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
+        DialogPlaylistDuplicateSongBinding bind = DialogPlaylistDuplicateSongBinding.inflate(getLayoutInflater());
+        bind.playlistDuplicateSongDialogSummary
+                .setText(getResources().getString(R.string.playlist_duplicate_song_dialog_summary, song.getTitle(), playlist.getName()));
+
+        return new MaterialAlertDialogBuilder(requireContext())
+                .setView(bind.getRoot())
+                .setTitle(R.string.playlist_duplicate_song_dialog_title)
+                .setPositiveButton(R.string.playlist_duplicate_song_dialog_positive_button, null)
+                .setNegativeButton(R.string.playlist_duplicate_song_dialog_negative_button, null)
+                .create();
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        setButtonAction();
+    }
+
+    private void setButtonAction() {
+        androidx.appcompat.app.AlertDialog dialog = (androidx.appcompat.app.AlertDialog) getDialog();
+
+        if (dialog != null) {
+            Button positiveButton = dialog.getButton(Dialog.BUTTON_POSITIVE);
+            positiveButton.setOnClickListener(v -> {
+                dialogClickCallback.onPositiveClick();
+                dialog.dismiss();
+            });
+
+            Button negativeButton = dialog.getButton(Dialog.BUTTON_NEGATIVE);
+            negativeButton.setOnClickListener(v -> {
+                dialogClickCallback.onNegativeClick();
+                dialog.dismiss();
+            });
+        }
+    }
+}

app/src/main/java/com/cappielloantonio/tempo/util/Preferences.kt

@@ -174,7 +174,7 @@ object Preferences {
 
     @JvmStatic
     fun isInUseServerAddressLocal(): Boolean {
-        return getInUseServerAddress() == getLocalAddress()
+        return getInUseServerAddress() == getLocalAddress() && !getLocalAddress().isNullOrEmpty()
     }
 
     @JvmStatic
@@ -187,7 +187,7 @@ object Preferences {
     fun isServerSwitchable(): Boolean {
         return App.getInstance().preferences.getLong(
                 NEXT_SERVER_SWITCH, 0
-        ) + 15000 < System.currentTimeMillis()
+        ) + 15000 < System.currentTimeMillis() && !getServer().isNullOrEmpty() && !getLocalAddress().isNullOrEmpty()
     }
 
     @JvmStatic

app/src/main/java/com/cappielloantonio/tempo/viewmodel/PlaylistChooserViewModel.java

@@ -33,6 +33,13 @@ public class PlaylistChooserViewModel extends AndroidViewModel {
         return playlists;
     }
 
+    public LiveData<Boolean> isSongInPlaylist(String playlistId, LifecycleOwner owner) {
+        MutableLiveData<Boolean> songs = new MutableLiveData<>();
+
+        playlistRepository.isSongInPlaylist(playlistId, toAdd.getId()).observe(owner, songs::postValue);
+        return songs;
+    }
+
     public void addSongToPlaylist(String playlistId) {
         playlistRepository.addSongToPlaylist(playlistId, new ArrayList(Collections.singletonList(toAdd.getId())));
     }

app/src/main/res/layout/dialog_playlist_duplicate_song.xml

@@ -0,0 +1,15 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@+id/playlist_duplicate_song_dialog_summary"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="24dp"
+        android:layout_marginTop="12dp"
+        android:layout_marginEnd="24dp"
+        android:layout_marginBottom="4dp" />
+
+</LinearLayout>

app/src/main/res/values-de/strings.xml

@@ -345,4 +345,8 @@
     <string name="track_info_summary_transcoding_codec">Tempo wird den Server bitten, die Datei zu transkodieren. Der vom Benutzer gewünschte Codec ist %1$s, die Bitrate wird dieselbe wie bei der original Datei sein. Die potentielle Transkodierung der Datei in das gewünschte Format ist vom Server abhängig. Dieser kann die Operation gegebenenfalls nicht unterstützen.</string>
     <string name="track_info_summary_transcoding_bitrate">Tempo wird den Server bitten, die Bitrate der Datei zu erändern. Die vom Benutzer gewünschte Bitrate ist %1$s, der Codec der Originaldatei wird nicht verändert. Änderungen an der Bitrate der Datei werden vom Server ausgeführt, dieser kann die Operation gegebenenfalls nicht unterstützen.</string>
     <string name="track_info_summary_full_transcode">Die Anwendung wird den Server bitten die Datei zu transkodieren und die Bitrate zu verändern. Der vom Benutzer gewünschte Codec ist %1$s, mit der Bitrate %2$s. Änderungen am Codec und an der Bitrate der Datei werden vom Server ausgeführt, dieser kann die Operation gegebenenfalls nicht unterstützen.</string>
+    <string name="playlist_duplicate_song_dialog_title">Doppelter Track</string>
+    <string name="playlist_duplicate_song_dialog_summary">Der Track \"%1$s\" existiert bereits in der Playlist \"%2$s\"</string>
+    <string name="playlist_duplicate_song_dialog_positive_button">Trotzdem hinzufügen</string>
+    <string name="playlist_duplicate_song_dialog_negative_button">Nicht hinzufügen</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -409,4 +409,8 @@
     <string name="undraw_page">unDraw</string>
     <string name="undraw_thanks">A special thanks goes to unDraw without whose illustrations we could not have made this application more beautiful.</string>
     <string name="undraw_url">https://undraw.co/</string>
+    <string name="playlist_duplicate_song_dialog_title">Duplicate song</string>
+    <string name="playlist_duplicate_song_dialog_summary">The song \"%1$s\" already exists in playlist \"%2$s\".</string>
+    <string name="playlist_duplicate_song_dialog_positive_button">Add anyway</string>
+    <string name="playlist_duplicate_song_dialog_negative_button">Don\'t add</string>
 </resources>