replace queue store with room database

app/src/main/java/com/dkanada/gramophone/database/JellyDatabase.java

@@ -0,0 +1,18 @@
+package com.dkanada.gramophone.database;
+
+import androidx.room.RoomDatabase;
+
+import com.dkanada.gramophone.model.Song;
+
+@androidx.room.Database(
+        entities = {
+                Song.class,
+                QueueSong.class
+        },
+        version = 1,
+        exportSchema = false
+)
+public abstract class JellyDatabase extends RoomDatabase {
+    public abstract QueueSongDao queueSongDao();
+    public abstract SongDao songDao();
+}

app/src/main/java/com/dkanada/gramophone/database/QueueSong.java

@@ -0,0 +1,34 @@
+package com.dkanada.gramophone.database;
+
+import androidx.room.Entity;
+import androidx.room.ForeignKey;
+
+import com.dkanada.gramophone.model.Song;
+
+@Entity(
+        tableName = "queueSongs",
+        primaryKeys = {
+                "index",
+                "queue"
+        }
+)
+public class QueueSong {
+    public int index;
+
+    public int queue;
+
+    @ForeignKey(
+            entity = Song.class,
+            parentColumns = {"id"},
+            childColumns = {"songId"},
+            onDelete = ForeignKey.CASCADE
+    )
+    public String songId;
+
+    public QueueSong(String songId, int index, int queue) {
+        this.songId = songId;
+
+        this.index = index;
+        this.queue = queue;
+    }
+}

app/src/main/java/com/dkanada/gramophone/database/QueueSongDao.java

@@ -0,0 +1,45 @@
+package com.dkanada.gramophone.database;
+
+import androidx.room.Dao;
+import androidx.room.Insert;
+import androidx.room.OnConflictStrategy;
+import androidx.room.Query;
+
+import com.dkanada.gramophone.App;
+import com.dkanada.gramophone.model.Song;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Dao
+public abstract class QueueSongDao {
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    public abstract void insertQueueSongs(List<QueueSong> queueSongs);
+
+    @Query("DELETE FROM queueSongs")
+    public abstract void deleteQueueSongs();
+
+    @Query("SELECT * from queueSongs WHERE queue = :queue ORDER BY `index`")
+    public abstract List<QueueSong> getQueueSongs(int queue);
+
+    public List<Song> getQueue(int queue) {
+        List<QueueSong> queueSongs = getQueueSongs(queue);
+        List<Song> songs = new ArrayList<>();
+
+        for (QueueSong queueSong : queueSongs) {
+            Song song = App.getDatabase().songDao().getSong(queueSong.songId);
+            if (song != null) songs.add(song);
+        }
+
+        return songs;
+    }
+
+    public void setQueue(List<Song> songs, int queue) {
+        List<QueueSong> queueSongs = new ArrayList<>();
+        for (int i = 0; i < songs.size(); i++) {
+            queueSongs.add(new QueueSong(songs.get(i).id, i, queue));
+        }
+
+        insertQueueSongs(queueSongs);
+    }
+}

app/src/main/java/com/dkanada/gramophone/database/SongDao.java

@@ -0,0 +1,22 @@
+package com.dkanada.gramophone.database;
+
+import androidx.room.Dao;
+import androidx.room.Insert;
+import androidx.room.OnConflictStrategy;
+import androidx.room.Query;
+
+import com.dkanada.gramophone.model.Song;
+
+import java.util.List;
+
+@Dao
+public interface SongDao {
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    void insertSongs(List<Song> songs);
+
+    @Query("DELETE FROM songs")
+    void deleteSongs();
+
+    @Query("SELECT * FROM songs WHERE id = :id")
+    Song getSong(String id);
+}