window.addEventListener('DOMContentLoaded', (event) => {
	const video = document.getElementById('player_video');
	const audio = document.getElementById('player_audio');

	formats = JSON.parse(document.getElementById('yt_formats').innerText)
		.filter((fmt) => isFormatSupported(fmt) === true)
		.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);

	if (localStorage.getItem("videoStream") == null || localStorage.getItem("videoStream") == "") {
		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);

		selectStreams(videoFormat, audioFormat)
	} else {
		let videoFormat = formats.find((fmt) => fmt.format_id == localStorage.getItem("videoStream"));
		if (videoFormat == null) {
			videoFormat = formats.find((fmt) => fmt.vcodec !== 'none');
		}
		let audioFormat = videoFormat.acodec === 'none' ? formats.find((fmt) => fmt.format_id == localStorage.getItem("audioStream")) : null;
		if (audioFormat == null) {
			audioFormat = videoFormat.acodec === 'none' ? formats.find((fmt) => fmt.acodec !== 'none') : null;
		}
		console.log('selected video format', videoFormat);
		console.log('selected audio format', audioFormat);

		selectStreams(videoFormat, audioFormat)
	}
	

	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;
			localStorage.setItem("volume", audio.volume);
		} else {
			video.volume = amount;
			localStorage.setItem("volume", video.volume);
		}
		document.querySelector('.ytp-volume-slider-foreground').style.left = amount * 51 + 'px';
		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();
			}
		}
	}

	function toggleSettings() {
		let menu = document.querySelector('.settings_menu');
		if(menu.style.display == "block") {
			menu.style.display = "none";
		} else {
			menu.style.display = "block";
		}
	}
	
	function applyStreams() {
		let autoplayInput = document.querySelector('#autoplayInput');
		let videoStreamInput = document.querySelector('#videoStreamInput');
		let audioStreamInput = document.querySelector('#audioStreamInput');
		localStorage.setItem("videoStream", videoStreamInput.value);
		localStorage.setItem("audioStream", audioStreamInput.value);
		localStorage.setItem("autoplay", autoplayInput.checked);

		const videoFormat = formats.find((fmt) => fmt.format_id == videoStreamInput.value);
		const audioFormat = videoFormat.acodec === 'none' ? formats.find((fmt) => fmt.format_id == audioStreamInput.value) : null;
		selectStreams(videoFormat, audioFormat)
	}

	function resetStreams() {
		localStorage.removeItem("videoStream");
		localStorage.removeItem("audioStream");
	}

	function seekRelative(v) {
		video.pause();
		video.currentTime=video.currentTime+v;
		if(audio) {
			audio.pause();
			audio.currentTime=video.currentTime;
		}
		playbackWait();
	}

	function handleKeyboard(e) {
		console.log(e)
		if (e.target.name != "search_query") {
			if (e.key == "ArrowLeft") {
				seekRelative(-5);
				e.preventDefault();
			} else if (e.key == "ArrowRight") {
				seekRelative(5);
				e.preventDefault();
			} else if (e.key == " " || e.key == "k") {
				toggleVideo();
				e.preventDefault();
			} else if (e.key == "j") {
				seekRelative(-10);
			} else if (e.key == "l") {
				seekRelative(10);
			} else if (e.key == "f") {
				toggleFullscreen();
			}
		}
	}

	function handleProtected(e) {
		console.log(e)
		if(e.originalTarget.error.code == 4 && ! e.originalTarget.currentSrc.startsWith("https://"+window.location.hostname)) {
			e.target.src="https://"+window.location.hostname+"/proxy?url="+encodeURIComponent(encodeURIComponent(e.originalTarget.currentSrc))
		}
	}
	function getMimeType(fmt) {
		const mainType = fmt.vcodec !== 'none' ? 'video' : 'audio';
		let secondary = {
			m4a: 'mp4',
		}[fmt.ext] || fmt.ext;
		const codecs = [fmt.vcodec, fmt.acodec].filter(c => c && c !== 'none').join(', ');
		return `${mainType}/${secondary}; codecs="${codecs}"`;
	}

	function isFormatSupported(fmt) {
		//// currently, we remove other formats in the backend
		//if (!['http', 'https'].includes(fmt.protocol))
		//	return false;

		// must be very old: https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/isTypeSupported#browser_compatibility
		if (!('MediaSource' in window)) {
			if (['avc1', 'none'].includes(fmt.vcodec.substring(0, 4))
				&& ['mp4a', 'none'].includes(fmt.acodec.substring(0, 4))) {
				return true;
			}
			return false;
		}

		return MediaSource.isTypeSupported(getMimeType(fmt));
	}

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

	function playbackWait() {
		waiting = setInterval(()=> {
			if (document.querySelector("video").readyState == 4) {
				toggleVideo(true);
				clearInterval(waiting)
			} else {
				console.log("waiting...")
			}
		},100);
	}

	//              document.querySelector('.ytp-button-play').addEventListener('click', () => toggleVideo());
	document.querySelector('.ytp-settings-button').addEventListener('click', () => toggleSettings());
	document.querySelector('#applyStreams').addEventListener('click', () => applyStreams());
	document.querySelector('#resetStreams').addEventListener('click', () => resetStreams());
	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());
	document.querySelector('video').addEventListener('error', (e) => handleProtected(e));
	document.querySelector('audio').addEventListener('error', (e) => handleProtected(e));
	document.querySelector('body').addEventListener('keydown', (e) => handleKeyboard(e));

	if(localStorage.getItem("autoplay") == "true") {
		toggleVideo(true);
		document.querySelector('#autoplayInput').checked = true;
		playbackWait();
	}

	// formats

	console.log("w dzisiejszym menu")

	formats.forEach((e) => {
		if (e.acodec == "none") {
			console.log(`- ${e.format_id}, czyli ${e.height}p`)
		} else if (e.vcodec == "none") {
			console.log(`- ${e.format_id}, czyli ${e.acodec} ${e.abr}kbps`)
		} else {
			console.log(`A TAKŻE SPECJALNEGO GOŚCIA ${e.format_id}, czyli ${e.height}p WRAZ Z RODZINĄ`)
		}
	})
	
});