window.addEventListener('DOMContentLoaded', (event) => {
	const video = document.getElementById('player_video');
	const audio = document.getElementById('player_audio');
	if (localStorage.getItem("volume") != null) {
		setVolume(localStorage.getItem("volume"));
	}
	const playButton = document.querySelector('.ytp-button[aria-label="Play"]');
	function toggleVideo(play) {
		const { classList } = playButton;
		const shouldPlay = typeof play === 'boolean' ? play : video.paused;
		try {
			if (shouldPlay) {
				classList.remove('ytp-button-play');
				classList.add('ytp-button-pause');
				if (video.ended) {
					video.currentTime = 0;
					audio.currentTime = 0;
				}
				video.play();
				if (audio.src) {
					audio.play();
				}
			} else {
				classList.remove('ytp-button-pause');
				classList.add('ytp-button-play');
				video.pause();
				if (audio.src) {
					audio.pause();
				}
			}
		} catch (e) {
			console.error(e);
		}
	}

	function updateTime() {
		document.querySelector('.ytp-time-current').innerHTML =
			Math.floor(video.currentTime / 60) +
			':' +
			Math.floor(video.currentTime % 60)
				.toString()
				.padStart(2, '0');
		document.querySelector('.ytp-time-duration').innerHTML =
			Math.floor(video.duration / 60) +
			':' +
			Math.floor(video.duration % 60)
				.toString()
				.padStart(2, '0');
		document.querySelector('.ytp-play-progress').style.transform = 'scaleX(' + video.currentTime / video.duration + ')';
		document.querySelector('.html5-scrubber-button').style.left = (video.currentTime / video.duration) * 100 + '%';
	}

	function scrub(e) {
		const w = document.querySelector('.ytp-progress-list').getBoundingClientRect();
		const amount = (e.clientX - w.x) / w.width;
		video.currentTime = video.duration * amount;
		audio.currentTime = audio.duration * amount;
		console.log(e);
	}

	function volume(e) {
		const v = document.querySelector('.ytp-volume-slider').getBoundingClientRect();
		const amount = (e.clientX - v.x) / v.width;
		setVolume(amount);
	}

	function setVolume(amount) {
		if (audio.src) {
			audio.volume = amount;
		} else {
			video.volume = amount;
		}
		document.querySelector('.ytp-volume-slider-foreground').style.left = amount * 51 + 'px';
		localStorage.setItem("volume", video.volume);
		const icon = document.querySelector('.ytp-button-volume');
		if (amount == 0) {
			icon.dataset.value = 'off';
		} else if (amount < 0.2) {
			icon.dataset.value = 'min';
		} else if (amount < 0.4) {
			icon.dataset.value = 'quiet';
		} else if (amount < 0.6) {
			icon.dataset.value = 'normal';
		} else if (amount < 0.8) {
			icon.dataset.value = 'loud';
		} else {
			icon.dataset.value = 'max';
		}
	}

	function toggleFullscreen() {
		if (document.fullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement) {
			if (document.mozCancelFullScreen) {
				document.mozCancelFullScreen();
			} else if (document.cancelFullScreen) {
				document.cancelFullScreen();
			} else if (document.webkitCancelFullScreen) {
				document.webkitCancelFullScreen();
			}
		} else {
			movie = document.getElementById('movie_player');

			if (movie.requestFullscreen) {
				movie.requestFullscreen();
			} else if (movie.mozRequestFullScreen) {
				movie.mozRequestFullScreen();
			} else if (movie.webkitRequestFullscreen) {
				movie.webkitRequestFullscreen();
			}
		}
	}

	const formats = JSON.parse(document.getElementById('yt_formats').innerText)
		.filter((fmt) => ['http', 'https'].includes(fmt.protocol))
		.sort((a, b) => {
			if (a.vcodec === 'none' && b.vcodec !== 'none') {
				return -1;
			}
			if (a.vcodec !== 'none' && b.vcodec === 'none') {
				return 1;
			}
			if (a.vcodec !== 'none' && b.vcodec !== 'none') {
				return b.height - a.height;
			}
			if (a.acodec !== 'none' && b.acodec !== 'none') {
				return b.abr - a.abr;
			}
		});
	console.log(formats);
	const videoFormat = formats.find((fmt) => fmt.vcodec !== 'none');
	const audioFormat = videoFormat.acodec === 'none' ? formats.find((fmt) => fmt.acodec !== 'none') : null;
	console.log('selected video format', videoFormat);
	console.log('selected audio format', audioFormat);

	video.src = videoFormat.url;
	if (audioFormat) {
		audio.src = audioFormat.url;
	}

	//              document.querySelector('.ytp-button-play').addEventListener('click', () => toggleVideo());
	playButton.addEventListener('click', () => toggleVideo());
	video.addEventListener('click', () => toggleVideo());
	video.addEventListener('dblclick', () => toggleFullscreen());
	let videoWaiting = false;
	let audioWaiting = false;
	video.addEventListener('waiting', () => {
		toggleVideo(false);
		videoWaiting = true;
	});
	video.addEventListener('playing', () => {
		videoWaiting = false;
		console.log(`videoWaiting ${videoWaiting}, audioWaiting ${audioWaiting}`);
		if (!audioWaiting) {
			toggleVideo(true);
		}
	});
	audio.addEventListener('waiting', () => {
		toggleVideo(false);
		audioWaiting = true;
	});
	audio.addEventListener('playing', () => {
		audioWaiting = false;
		console.log(`videoWaiting ${videoWaiting}, audioWaiting ${audioWaiting}`);
		if (!videoWaiting) {
			toggleVideo(true);
		}
	});
	video.addEventListener('timeupdate', () => updateTime());
	video.addEventListener('ended', () => toggleVideo(false)); // just to change the classes
	document.querySelector('.ytp-progress-list').addEventListener('click', (e) => scrub(e));
	//      document.querySelector('.ytp-play-progress').addEventListener('click', (e) => scrub(e));
	document.querySelector('.ytp-volume-slider').addEventListener('click', (e) => volume(e));
	document.querySelector('.ytp-button-fullscreen-enter').addEventListener('click', () => toggleFullscreen());

	// autoplay
	toggleVideo(true);
});