/*
 * Copyright 2019-2020 GregTCLTK and Schlauer-Hax
 *
 * Licensed under the GNU Affero General Public License, Version 3.0;
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    https://www.gnu.org/licenses/agpl-3.0.en.html
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.bbn.hadder.audio;

import com.sedmelluq.discord.lavaplayer.player.AudioPlayer;
import com.sedmelluq.discord.lavaplayer.track.playback.AudioFrame;
import net.dv8tion.jda.api.audio.AudioSendHandler;

import javax.annotation.Nullable;
import java.nio.ByteBuffer;

public class AudioPlayerSendHandler implements AudioSendHandler {

    private final AudioPlayer audioPlayer;
    private AudioFrame lastFrame;

    public AudioPlayerSendHandler(AudioPlayer audioPlayer) {
        this.audioPlayer = audioPlayer;
    }

    @Override
    public boolean canProvide() {
        if (lastFrame == null) {
            lastFrame = audioPlayer.provide();
        }

        return lastFrame != null;
    }

    @Nullable
    @Override
    public ByteBuffer provide20MsAudio() {
        if (lastFrame == null) {
            lastFrame = audioPlayer.provide();
        }

        byte[] data = lastFrame != null ? lastFrame.getData() : null;
        lastFrame = null;

        return ByteBuffer.wrap(data);
    }

    @Override
    public boolean isOpus() {
        return true;
    }
}