Synchronization of starred tracks with local downloads

app/src/main/java/com/cappielloantonio/play/ui/fragment/HomeFragment.java

@@ -13,6 +13,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.core.view.ViewCompat;
 import androidx.fragment.app.Fragment;
+import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.media3.common.util.UnstableApi;
 import androidx.media3.session.MediaBrowser;
@@ -30,6 +31,8 @@ import com.cappielloantonio.play.helper.recyclerview.CustomLinearSnapHelper;
 import com.cappielloantonio.play.helper.recyclerview.DotsIndicatorDecoration;
 import com.cappielloantonio.play.helper.recyclerview.GridItemDecoration;
 import com.cappielloantonio.play.interfaces.ClickCallback;
+import com.cappielloantonio.play.model.Download;
+import com.cappielloantonio.play.service.DownloaderManager;
 import com.cappielloantonio.play.service.MediaManager;
 import com.cappielloantonio.play.service.MediaService;
 import com.cappielloantonio.play.subsonic.models.Child;
@@ -45,6 +48,9 @@ import com.cappielloantonio.play.ui.adapter.SimilarTrackAdapter;
 import com.cappielloantonio.play.ui.adapter.SongHorizontalAdapter;
 import com.cappielloantonio.play.ui.adapter.YearAdapter;
 import com.cappielloantonio.play.util.Constants;
+import com.cappielloantonio.play.util.DownloadUtil;
+import com.cappielloantonio.play.util.MappingUtil;
+import com.cappielloantonio.play.util.Preferences;
 import com.cappielloantonio.play.util.UIUtil;
 import com.cappielloantonio.play.viewmodel.HomeViewModel;
 import com.google.android.gms.cast.framework.CastButtonFactory;
@@ -111,6 +117,7 @@ public class HomeFragment extends Fragment implements ClickCallback {
         super.onViewCreated(view, savedInstanceState);
 
         initAppBar();
+        initSyncStarredView();
         initDiscoverSongSlideView();
         initSimilarSongView();
         initArtistRadio();
@@ -254,6 +261,56 @@ public class HomeFragment extends Fragment implements ClickCallback {
         Objects.requireNonNull(bind.toolbar.getOverflowIcon()).setTint(requireContext().getResources().getColor(R.color.titleTextColor, null));
     }
 
+    private void initSyncStarredView() {
+        if (Preferences.isStarredSyncEnabled()) {
+            homeViewModel.getAllStarredTracks().observeForever(new Observer<List<Child>>() {
+                @Override
+                public void onChanged(List<Child> songs) {
+                    if (songs != null) {
+                        boolean showAlert = false;
+                        DownloaderManager manager = DownloadUtil.getDownloadTracker(requireContext());
+
+                        for (Child song : songs) {
+                            if (!manager.isDownloaded(song.getId())) {
+                                showAlert = true;
+                                break;
+                            }
+                        }
+
+                        if (showAlert) bind.homeSyncStarredCard.setVisibility(View.VISIBLE);
+                    }
+
+                    homeViewModel.getAllStarredTracks().removeObserver(this);
+                }
+            });
+        }
+
+        bind.homeSyncStarredCancel.setOnClickListener(v -> bind.homeSyncStarredCard.setVisibility(View.GONE));
+
+        bind.homeSyncStarredDownload.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                homeViewModel.getAllStarredTracks().observeForever(new Observer<List<Child>>() {
+                    @Override
+                    public void onChanged(List<Child> songs) {
+                        if (songs != null) {
+                            DownloaderManager manager = DownloadUtil.getDownloadTracker(requireContext());
+
+                            for (Child song : songs) {
+                                if (!manager.isDownloaded(song.getId())) {
+                                    manager.download(MappingUtil.mapDownload(song), new Download(song));
+                                }
+                            }
+                        }
+
+                        homeViewModel.getAllStarredTracks().removeObserver(this);
+                        bind.homeSyncStarredCard.setVisibility(View.GONE);
+                    }
+                });
+            }
+        });
+    }
+
     private void initDiscoverSongSlideView() {
         bind.discoverSongViewPager.setOrientation(ViewPager2.ORIENTATION_HORIZONTAL);
 

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

@@ -169,6 +169,13 @@ object Preferences {
             .getBoolean(SYNC_STARRED_TRACKS_FOR_OFFLINE_USE, false)
     }
 
+    @JvmStatic
+    fun setStarredSyncEnabled(isStarredSyncEnabled: Boolean) {
+        App.getInstance().preferences.edit().putBoolean(
+            SYNC_STARRED_TRACKS_FOR_OFFLINE_USE, isStarredSyncEnabled
+        ).apply()
+    }
+
     @JvmStatic
     fun showServerUnreachableDialog(): Boolean {
         return App.getInstance().preferences.getLong(

app/src/main/java/com/cappielloantonio/play/viewmodel/HomeViewModel.java

@@ -212,6 +212,10 @@ public class HomeViewModel extends AndroidViewModel {
         return artistBestOf;
     }
 
+    public LiveData<List<Child>> getAllStarredTracks() {
+        return songRepository.getStarredSongs(false, -1);
+    }
+
     public void refreshDiscoverySongSample(LifecycleOwner owner) {
         songRepository.getRandomSample(10, null, null).observe(owner, dicoverSongSample::postValue);
     }

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

@@ -52,6 +52,84 @@
             android:orientation="vertical"
             android:paddingBottom="@dimen/global_padding_bottom">
 
+            <!--  Download/Sync starred  -->
+            <com.google.android.material.card.MaterialCardView
+                android:id="@+id/home_sync_starred_card"
+                style="?attr/materialCardViewOutlinedStyle"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginHorizontal="16dp"
+                android:layout_marginTop="8dp"
+                android:visibility="gone">
+
+                <androidx.constraintlayout.widget.ConstraintLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:orientation="vertical"
+                    android:padding="12dp">
+
+                    <!-- Title, secondary and supporting text -->
+                    <TextView
+                        android:id="@+id/home_sync_starred_title"
+                        style="@style/TitleLarge"
+                        android:layout_width="0dp"
+                        android:layout_height="wrap_content"
+                        android:text="@string/home_sync_starred_title"
+                        android:textAppearance="?attr/textAppearanceTitleMedium"
+                        android:textFontWeight="600"
+                        app:layout_constraintEnd_toStartOf="@id/vertical_guideline"
+                        app:layout_constraintStart_toStartOf="parent"
+                        app:layout_constraintTop_toTopOf="parent" />
+
+                    <TextView
+                        android:id="@+id/home_sync_starred_subtitle"
+                        style="@style/TitleMedium"
+                        android:layout_width="0dp"
+                        android:layout_height="wrap_content"
+                        android:paddingTop="4dp"
+                        android:text="@string/home_sync_starred_subtitle"
+                        android:textAppearance="?attr/textAppearanceBodyMedium"
+                        android:textColor="?android:attr/textColorSecondary"
+                        app:layout_constraintEnd_toEndOf="parent"
+                        app:layout_constraintStart_toStartOf="parent"
+                        app:layout_constraintTop_toBottomOf="@+id/home_sync_starred_title" />
+
+                    <LinearLayout
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:layout_marginTop="24dp"
+                        android:gravity="end"
+                        android:orientation="horizontal"
+                        app:layout_constraintBottom_toBottomOf="parent"
+                        app:layout_constraintEnd_toEndOf="parent"
+                        app:layout_constraintStart_toStartOf="parent"
+                        app:layout_constraintTop_toBottomOf="@+id/home_sync_starred_subtitle">
+
+                        <com.google.android.material.button.MaterialButton
+                            android:id="@+id/home_sync_starred_cancel"
+                            style="?attr/materialButtonOutlinedStyle"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:layout_marginEnd="8dp"
+                            android:text="@string/home_sync_starred_cancel" />
+
+                        <com.google.android.material.button.MaterialButton
+                            android:id="@+id/home_sync_starred_download"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/home_sync_starred_download" />
+
+                    </LinearLayout>
+
+                    <androidx.constraintlayout.widget.Guideline
+                        android:id="@+id/vertical_guideline"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:orientation="vertical"
+                        app:layout_constraintGuide_percent="0.70" />
+                </androidx.constraintlayout.widget.ConstraintLayout>
+            </com.google.android.material.card.MaterialCardView>
+
             <!--  Discover music  -->
             <LinearLayout
                 android:id="@+id/home_discover_sector"

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

@@ -59,6 +59,10 @@
     <string name="genre_catalogue_title">Genre Catalogue</string>
     <string name="genre_catalogue_title_expanded">Browse Genres</string>
     <string name="home_subtitle_made_for_you">Start mix from a song you liked</string>
+    <string name="home_sync_starred_title">Start mix from a song you liked</string>
+    <string name="home_sync_starred_subtitle">Start mix from a song you liked</string>
+    <string name="home_sync_starred_cancel">Cancel</string>
+    <string name="home_sync_starred_download">Download</string>
     <string name="home_title_flashback">Flashback</string>
     <string name="home_title_last_played">Last played</string>
     <string name="home_title_last_played_see_all_button">See all</string>
@@ -185,6 +189,7 @@
     <string name="song_subtitle_formatter">%1$s  •  %2$s</string>
     <string name="starred_sync_dialog_negative_button">Cancel</string>
     <string name="starred_sync_dialog_positive_button">Continue</string>
+    <string name="starred_sync_dialog_summary">Downloading starry tracks may require a large amount of data.</string>
     <string name="starred_sync_dialog_title">Sync starred tracks</string>
     <string name="undraw_url">https://undraw.co/</string>
     <string name="undraw_page">unDraw</string>