xyz.gianlu.librespot.player.metrics.TrackTransitionEvent Maven / Gradle / Ivy

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/*
 * Copyright 2021 devgianlu
 *
 * 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 xyz.gianlu.librespot.player.metrics;

import org.jetbrains.annotations.NotNull;
import xyz.gianlu.librespot.core.EventService;

/**
 * @author devgianlu
 */
public final class TrackTransitionEvent implements EventService.GenericEvent {
    private static int trackTransitionIncremental = 0;
    private final String deviceId;
    private final String lastCommandSentByDeviceId;
    private final PlaybackMetrics metrics;

    public TrackTransitionEvent(@NotNull String deviceId, @NotNull String lastCommandSentByDeviceId, @NotNull PlaybackMetrics metrics) {
        this.deviceId = deviceId;
        this.lastCommandSentByDeviceId = lastCommandSentByDeviceId;
        this.metrics = metrics;
    }

    @Override
    public EventService.@NotNull EventBuilder build() {
        if (metrics.player.contentMetrics == null)
            throw new IllegalStateException();

        int when = metrics.lastValue();
        EventService.EventBuilder event = new EventService.EventBuilder(EventService.Type.TRACK_TRANSITION);
        event.append(String.valueOf(trackTransitionIncremental++));
        event.append(deviceId);
        event.append(metrics.playbackId).append("00000000000000000000000000000000");
        event.append(metrics.sourceStart).append(metrics.reasonStart == null ? null : metrics.reasonStart.val);
        event.append(metrics.sourceEnd).append(metrics.reasonEnd == null ? null : metrics.reasonEnd.val);
        event.append(String.valueOf(metrics.player.decodedLength)).append(String.valueOf(metrics.player.size));
        event.append(String.valueOf(when)).append(String.valueOf(when));
        event.append(String.valueOf(metrics.player.duration));
        event.append(String.valueOf(metrics.player.decryptTime)).append(String.valueOf(metrics.player.fadeOverlap)).append('0').append('0');
        event.append(metrics.firstValue() == 0 ? '0' : '1').append(String.valueOf(metrics.firstValue()));
        event.append('0').append("-1").append("context");
        event.append(String.valueOf(metrics.player.contentMetrics.audioKeyTime)).append('0');
        event.append(metrics.player.contentMetrics.preloadedAudioKey ? '1' : '0').append('0').append('0').append('0');
        event.append(String.valueOf(when)).append(String.valueOf(when));
        event.append('0').append(String.valueOf(metrics.player.bitrate));
        event.append(metrics.contextUri).append(metrics.player.encoding);
        event.append(metrics.id.hasGid() ? metrics.id.hexId() : "").append("");
        event.append('0').append(String.valueOf(metrics.timestamp)).append('0');
        event.append("context").append(metrics.referrerIdentifier).append(metrics.featureVersion);
        event.append("com.spotify").append(metrics.player.transition).append("none");
        event.append(lastCommandSentByDeviceId).append("na").append("none");
        return event;
    }
}