package org.schabi.newpipe.database.playlist.dao;

import androidx.room.Dao;
import androidx.room.Query;
import androidx.room.Transaction;

import org.schabi.newpipe.database.BasicDAO;
import org.schabi.newpipe.database.playlist.model.PlaylistEntity;

import java.util.List;

import io.reactivex.rxjava3.core.Flowable;

import static org.schabi.newpipe.database.playlist.model.PlaylistEntity.PLAYLIST_ID;
import static org.schabi.newpipe.database.playlist.model.PlaylistEntity.PLAYLIST_TABLE;

@Dao
public interface PlaylistDAO extends BasicDAO<PlaylistEntity> {
    @Override
    @Query("SELECT * FROM " + PLAYLIST_TABLE)
    Flowable<List<PlaylistEntity>> getAll();

    @Override
    @Query("DELETE FROM " + PLAYLIST_TABLE)
    int deleteAll();

    @Override
    default Flowable<List<PlaylistEntity>> listByService(final int serviceId) {
        throw new UnsupportedOperationException();
    }

    @Query("SELECT * FROM " + PLAYLIST_TABLE + " WHERE " + PLAYLIST_ID + " = :playlistId")
    Flowable<List<PlaylistEntity>> getPlaylist(long playlistId);

    @Query("DELETE FROM " + PLAYLIST_TABLE + " WHERE " + PLAYLIST_ID + " = :playlistId")
    int deletePlaylist(long playlistId);

    @Query("SELECT COUNT(*) FROM " + PLAYLIST_TABLE)
    Flowable<Long> getCount();

    @Transaction
    default long upsertPlaylist(final PlaylistEntity playlist) {
        final long playlistId = playlist.getUid();

        if (playlistId == -1) {
            // This situation is probably impossible.
            return insert(playlist);
        } else {
            update(playlist);
            return playlistId;
        }
    }
}