Code refactor

app/src/main/java/code/name/monkey/retromusic/db/HistoryDao.kt

@@ -0,0 +1,26 @@
+package code.name.monkey.retromusic.db
+
+import androidx.lifecycle.LiveData
+import androidx.room.*
+
+@Dao
+interface HistoryDao {
+    companion object {
+        private const val HISTORY_LIMIT = 100
+    }
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertSongInHistory(historyEntity: HistoryEntity)
+
+    @Query("SELECT * FROM HistoryEntity WHERE id = :songId LIMIT 1")
+    suspend fun isSongPresentInHistory(songId: Int): HistoryEntity?
+
+    @Update
+    suspend fun updateHistorySong(historyEntity: HistoryEntity)
+
+    @Query("SELECT * FROM HistoryEntity ORDER BY time_played DESC LIMIT $HISTORY_LIMIT")
+    fun historySongs(): List<HistoryEntity>
+
+    @Query("SELECT * FROM HistoryEntity ORDER BY time_played DESC LIMIT $HISTORY_LIMIT")
+    fun observableHistorySongs(): LiveData<List<HistoryEntity>>
+}

app/src/main/java/code/name/monkey/retromusic/db/PlaylistDao.kt

@@ -45,17 +45,6 @@ interface PlaylistDao {
     @Delete
     suspend fun deleteSongsInPlaylist(songs: List<SongEntity>)
 
-    @Insert(onConflict = OnConflictStrategy.REPLACE)
-    suspend fun insertSongInHistory(historyEntity: HistoryEntity)
-
-    @Query("SELECT * FROM HistoryEntity WHERE id = :songId LIMIT 1")
-    suspend fun isSongPresentInHistory(songId: Int): HistoryEntity?
-
-    @Update
-    suspend fun updateHistorySong(historyEntity: HistoryEntity)
-
-    @Query("SELECT * FROM HistoryEntity ORDER BY time_played DESC")
-    fun historySongs(): LiveData<List<HistoryEntity>>
 
     @Query("SELECT * FROM SongEntity WHERE playlist_creator_id= :playlistId")
     fun favoritesSongsLiveData(playlistId: Int): LiveData<List<SongEntity>>

app/src/main/java/code/name/monkey/retromusic/db/RetroDatabase.kt

@@ -12,4 +12,5 @@ abstract class RetroDatabase : RoomDatabase() {
     abstract fun playlistDao(): PlaylistDao
     abstract fun blackListStore(): BlackListStoreDao
     abstract fun playCountDao(): PlayCountDao
+    abstract fun historyDao(): HistoryDao
 }