// kryz-go app entry point
window.addEventListener('DOMContentLoaded', () => {
  console.log('kryz-go loaded');
  initializeStreamPlayer();
  initializeBackgroundMode();
});

function initializeStreamPlayer() {
  const streamUrl = 'https://kryz.out.airtime.pro/kryz_b';
  const audio = document.getElementById('stream-player');
  const startButton = document.getElementById('start-stream');
  const stopButton = document.getElementById('stop-stream');
  const status = document.getElementById('stream-status');

  if (!audio || !startButton || !stopButton || !status) {
    console.error('Stream player controls are missing from the page.');
    return;
  }

  const setStatus = (isPlaying, text) => {
    startButton.disabled = isPlaying;
    stopButton.disabled = !isPlaying;
    status.textContent = text;
  };

  const ensureBackgroundPlaybackPermissions = async () => {
    const backgroundMode = window.Capacitor?.Plugins?.BackgroundMode;

    if (!backgroundMode) {
      return true;
    }

    const microphonePermission = await backgroundMode.checkMicrophonePermission();
    if (microphonePermission.microphone === 'granted') {
      return true;
    }

    const requestedMicrophonePermission = await backgroundMode.requestMicrophonePermission();
    if (requestedMicrophonePermission.microphone === 'granted') {
      return true;
    }

    setStatus(false, 'Enable microphone permission in Android settings for screen-off playback.');
    console.warn('Background playback blocked: microphone permission not granted.');
    return false;
  };

  const startStream = async () => {
    try {
      const hasBackgroundPermissions = await ensureBackgroundPlaybackPermissions();
      if (!hasBackgroundPermissions) {
        return;
      }

      audio.src = streamUrl;
      await audio.play();
      setStatus(true, 'Stream is playing.');
    } catch (error) {
      setStatus(false, 'Unable to start stream.');
      console.error('Failed to start stream:', error);
    }
  };

  const stopStream = () => {
    audio.pause();
    audio.removeAttribute('src');
    audio.load();
    setStatus(false, 'Stream is stopped.');
  };

  startButton.addEventListener('click', startStream);
  stopButton.addEventListener('click', stopStream);
  audio.addEventListener('ended', () => {
    setStatus(false, 'Stream ended.');
  });
  audio.addEventListener('error', () => {
    setStatus(false, 'Stream error.');
  });
}

async function initializeBackgroundMode() {
  const backgroundMode = window.Capacitor?.Plugins?.BackgroundMode;

  if (!backgroundMode) {
    console.warn('BackgroundMode plugin is not available in this runtime.');
    return;
  }

  try {
    const notificationPermission = await backgroundMode.checkNotificationsPermission();
    if (notificationPermission.notifications !== 'granted') {
      await backgroundMode.requestNotificationsPermission();
    }

    const microphonePermission = await backgroundMode.checkMicrophonePermission();
    if (microphonePermission.microphone !== 'granted') {
      const requestedMicrophonePermission = await backgroundMode.requestMicrophonePermission();
      if (requestedMicrophonePermission.microphone !== 'granted') {
        console.warn('BackgroundMode microphone permission denied; background playback may stop when screen is off.');
      }
    }

    const batteryOptimizations = await backgroundMode.checkBatteryOptimizations();
    if (batteryOptimizations.enabled) {
      console.warn('Battery optimizations are enabled; requesting exemption for reliable background playback.');
      await backgroundMode.requestDisableBatteryOptimizations();
    }

    await backgroundMode.disableWebViewOptimizations();

    await backgroundMode.enable({
      title: 'KRYZ-Go!',
      text: 'Background mode is active',
      channelName: 'kryz-go background',
      channelDescription: 'Keeps kryz-go running while the app is in background',
      resume: true,
      silent: false,
      disableWebViewOptimization: true,
    });

    await backgroundMode.addListener('appInBackground', () => {
      console.log('kryz-go moved to background');
    });

    await backgroundMode.addListener('appInForeground', () => {
      console.log('kryz-go returned to foreground');
    });

    console.log('BackgroundMode plugin enabled.');
  } catch (error) {
    console.error('Failed to initialize BackgroundMode plugin:', error);
  }
}