/*
 * Copyright (c) 2018 Nam Nguyen, nam@ene.im
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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 ml.docilealligator.infinityforreddit.videoautoplay;

import android.os.Handler;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.media3.common.util.UnstableApi;
import androidx.media3.datasource.DataSource;
import androidx.media3.datasource.DataSpec;
import androidx.media3.datasource.TransferListener;
import androidx.media3.exoplayer.upstream.BandwidthMeter;
import androidx.media3.exoplayer.upstream.DefaultBandwidthMeter;

/**
 * Abstract the {@link DefaultBandwidthMeter}, provide a wider use.
 *
 * @author eneim (2018/01/26).
 * @since 3.4.0
 */

@UnstableApi
@SuppressWarnings("WeakerAccess") //
public final class BaseMeter<T extends BandwidthMeter> implements BandwidthMeter, TransferListener {

  @NonNull
  private final T bandwidthMeter;
  @NonNull
  private final TransferListener transferListener;

  /**
   * @deprecated use {@link #BaseMeter(BandwidthMeter)} instead.
   */
  @SuppressWarnings({ "unused" }) //
  @Deprecated //
  public BaseMeter(@NonNull T bandwidthMeter, @NonNull TransferListener transferListener) {
    this(bandwidthMeter);
  }

  public BaseMeter(@NonNull T bandwidthMeter) {
    this.bandwidthMeter = ToroUtil.checkNotNull(bandwidthMeter);
    this.transferListener = ToroUtil.checkNotNull(this.bandwidthMeter.getTransferListener());
  }

  @Override public long getBitrateEstimate() {
    return bandwidthMeter.getBitrateEstimate();
  }

  @Override @Nullable public TransferListener getTransferListener() {
    return bandwidthMeter.getTransferListener();
  }

  @Override public void addEventListener(Handler eventHandler, EventListener eventListener) {
    bandwidthMeter.addEventListener(eventHandler, eventListener);
  }

  @Override public void removeEventListener(EventListener eventListener) {
    bandwidthMeter.removeEventListener(eventListener);
  }

  @Override
  public void onTransferInitializing(DataSource source, DataSpec dataSpec, boolean isNetwork) {
    transferListener.onTransferInitializing(source, dataSpec, isNetwork);
  }

  @Override public void onTransferStart(DataSource source, DataSpec dataSpec, boolean isNetwork) {
    transferListener.onTransferStart(source, dataSpec, isNetwork);
  }

  @Override public void onBytesTransferred(DataSource source, DataSpec dataSpec, boolean isNetwork,
      int bytesTransferred) {
    transferListener.onBytesTransferred(source, dataSpec, isNetwork, bytesTransferred);
  }

  @Override public void onTransferEnd(DataSource source, DataSpec dataSpec, boolean isNetwork) {
    transferListener.onTransferEnd(source, dataSpec, isNetwork);
  }
}
