/*
  Copyright (C) 2010 - 2017 Sebastian Luncan
  Copyright (C) 2017 Arun Isaac <arunisaac@systemreboot.net>

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program. If not, see <http://www.gnu.org/licenses/>.

  Website: http://isebaro.com/viewtube
  Contact: http://isebaro.com/contact
*/

// ==========Variables========== //

(function() {
    // Userscript
    var userscript = 'ViewTube';

    // Page
    var page = {win: window, doc: document, body: document.body, url: window.location.href, title: document.title, site: window.location.hostname.match(/([^.]+)\.[^.]+$/)[1]};

    // Player
    var player = {};
    var option = {'autoplay': false, 'definition': 'HD', 'container': 'MP4', 'dash': false, 'direct': false, 'widesize': false, 'fullsize': false};
    var mimetypes = {
	'MPEG': 'video/mpeg',
	'MP4': 'video/mp4',
	'WebM': 'video/webm',
	'FLV': 'video/x-flv',
	'MOV': 'video/quicktime',
	'M4V': 'video/x-m4v',
	'AVI': 'video/x-msvideo',
	'3GP': 'video/3gpp',
    };
    var sources = {};

    // Links
    var website = 'https://git.systemreboot.net/youtube-noscript-shim/about';
    var contact = 'mailto:arunisaac@systemreboot.net';

    // ==========Functions========== //

    function createMyElement(type, content, event, action, target) {
	function styleButton (button, state) {
	    styleMyElement(player[button], state ? {color: '#008080', textShadow: '0px 1px 1px #CCCCCC'} : {color: '#CCCCCC', textShadow: '0px 0px 0px'});
	}
	var obj = page.doc.createElement(type);
	if (content) {
	    switch (type) {
	    case 'div':
		obj.innerHTML = content;
		break;
	    case 'img':
		obj.src = content;
		break;
	    case 'option':
		obj.value = content;
		obj.innerHTML = content;
		break;
	    case 'video':
		obj.src = content;
		obj.controls = 'controls';
		obj.autoplay = 'autoplay';
		obj.volume = 0.8;
		obj.innerHTML = '<br><br>The video should be loading. If it doesn\'t load, make sure your browser supports HTML5\'s Video and this video codec. If you think it\'s a script issue, please report it <a href="' + contact + '" style="color:#00892C">here</a>.';
		break;
	    }
	}
	if (type == 'video') {
	    obj.type = mimetypes[player['videoPlay'].replace(/.*\s/, '')];
	    obj.id = 'vtVideo';
	}
	if (event == 'change') {
	    if (target == 'video') {
		obj.addEventListener('change', function() {
		    player['videoPlay'] = this.value;
		    if (player['isPlaying']) playMyVideo(option['autoplay']);
		}, false);
	    }
	}
	else if (event == 'click') {
	    obj.addEventListener('click', function() {
		switch (action) {
		case 'close':
		    page.body.removeChild(target);
		    break;
		case 'play':
		    playMyVideo(!player['isPlaying']);
		    break;
		case 'autoplay':
		    option['autoplay'] = !option['autoplay'];
		    styleButton('buttonAutoplay', option['autoplay']);
		    playMyVideo(option['autoplay'] && (!player['isPlaying']));
		    break;
		case 'dash':
		    option['dash'] = !option['dash'];
		    styleButton('buttonDASH', option['dash'])
		    setMyOptions('dash', option['dash']);
		    break;
		case 'widesize':
		    option['widesize'] = !option['widesize'];
		    setMyOptions('widesize', option['widesize']);
		    resizeMyPlayer('widesize');
		    break;
		case 'fullsize':
		    option['fullsize'] = !option['fullsize'];
		    setMyOptions('fullsize', option['fullsize']);
		    resizeMyPlayer('fullsize');
		    break;
		}
	    }, false);
	}
	return obj;
    }

    function getMyElement(obj, type, from, value, child, content) {
	var getObj, chObj, coObj;
	var pObj = (!obj) ? page.doc : obj;
	if (type == 'body') getObj = pObj.body;
	else {
	    if (from == 'id') getObj = pObj.getElementById(value);
	    else if (from == 'class') getObj = pObj.getElementsByClassName(value);
	    else if (from == 'tag') getObj = pObj.getElementsByTagName(type);
	    else if (from == 'ns') getObj = pObj.getElementsByTagNameNS(value, type);
	}
	chObj = (child >= 0) ? getObj[child] : getObj;
	if (content && chObj) {
	    if (type == 'html' || type == 'body' || type == 'div' || type == 'option') coObj = chObj.innerHTML;
	    else if (type == 'object') coObj = chObj.data;
	    else if (type == 'img' || type == 'video' || type == 'embed') coObj = chObj.src;
	    else coObj = chObj.textContent;
	    return coObj;
	}
	else {
	    return chObj;
	}
    }

    function modifyMyElement(obj, type, content, clear, hide) {
	if (content) {
	    if (type == 'div') obj.innerHTML = content;
	    else if (type == 'option') {
		obj.value = content;
		obj.innerHTML = content;
	    }
	    else if (type == 'object') obj.data = content;
	    else if (type == 'img' || type == 'video' || type == 'embed') obj.src = content;
	}
	if (clear) {
	    if (obj.hasChildNodes()) {
		while (obj.childNodes.length >= 1) {
		    obj.removeChild(obj.firstChild);
		}
	    }
	}
	if (hide) {
	    for (var i = 0; i < obj.children.length; i++) {
		styleMyElement(obj.children[i], {display: 'none'});
	    }
	}
    }

    function styleMyElement(obj, styles) {
	for (var property in styles) {
	    if (styles.hasOwnProperty(property)) obj.style[property] = styles[property];
	}
    }

    function createMyPlayer() {
	/* Get My Options */
	function onGot(item) {
	    Object.assign(option, item);

	    /* Player Settings */
	    player['panelHeight'] = 18;
	    player['panelPadding'] = 2;

	    /* The Panel */
	    var panelWidth = player['playerWidth'] - player['panelPadding'] * 2;
	    player['playerPanel'] = createMyElement('div', '', '', '', '');
	    styleMyElement(player['playerPanel'], {width: panelWidth + 'px', height: player['panelHeight'] + 'px', padding: player['panelPadding'] + 'px', backgroundColor: 'inherit', textAlign: 'center'});
	    player['playerWindow'].appendChild(player['playerPanel']);

	    /* Panel Items */
	    var panelItemBorder = 1;
	    var panelItemHeight = player['panelHeight'] - panelItemBorder * 2;

	    /* Panel Video Menu */
	    player['videoMenu'] = createMyElement('select', '', 'change', '', 'video');
	    player['videoMenu'].title = '{Videos: select the video format for playback}';
	    styleMyElement(player['videoMenu'], {width: '200px', height: panelItemHeight + 'px', border: '1px solid transparent', padding: '0px', display: 'inline', backgroundColor: 'inherit', color: '#336699', fontSize: '12px', textShadow: '0px 1px 1px #CCCCCC', verticalAlign: 'baseline', cursor: 'pointer'});
	    player['playerPanel'].appendChild(player['videoMenu']);
	    for (var videoCode in player['videoList']) {
		player['videoItem'] = createMyElement('option', videoCode, '', '', '');
		styleMyElement(player['videoItem'], {padding: '0px', display: 'block', color: '#336699', fontSize: '12px', textShadow: '0px 1px 1px #CCCCCC', cursor: 'pointer'});
		if (videoCode.indexOf('Video') != -1 || videoCode.indexOf('Audio') != -1) styleMyElement(player['videoItem'], {color: '#8F6B32'});
		if (player['videoList'][videoCode] == 'DASH') styleMyElement(player['videoItem'], {color: '#CF4913'});
		if (player['videoList'][videoCode] != 'DASH' || option['dash'])
		    player['videoMenu'].appendChild(player['videoItem']);
		else delete player['videoList'][videoCode];
		if (videoCode == 'Direct Video Link') styleMyElement(player['videoItem'], {color: '#00C0C0'});
	    }

	    /* Panel Autoplay Button */
	    player['buttonAutoplay'] = createMyElement('div', 'AP', 'click', 'autoplay', '');
	    player['buttonAutoplay'].title = '{Autoplay: click to enable/disable auto playback on page load}';
	    styleMyElement(player['buttonAutoplay'], {height: panelItemHeight + 'px', border: '1px solid #CCCCCC', borderRadius: '3px', padding: '0px 5px', display: 'inline', color: '#CCCCCC', fontSize: '12px', cursor: 'pointer'});
	    if (option['autoplay']) styleMyElement(player['buttonAutoplay'], {color: '#008080', textShadow: '0px 1px 1px #CCCCCC'});
	    player['playerPanel'].appendChild(player['buttonAutoplay']);

	    /* Panel DASH Button */
	    player['buttonDASH'] = createMyElement('div', 'MD', 'click', 'dash', '');
	    player['buttonDASH'].title = '{MPEG-DASH: click to enable/disable DASH playback using the HTML5 video player (experimental)}';
	    styleMyElement(player['buttonDASH'], {height: panelItemHeight + 'px', border: '1px solid #CCCCCC', borderRadius: '3px', padding: '0px 5px', display: 'inline', color: '#CCCCCC', fontSize: '12px', cursor: 'pointer'});
	    if (option['dash']) styleMyElement(player['buttonDASH'], {color: '#008080', textShadow: '0px 1px 1px #CCCCCC'});
	    player['playerPanel'].appendChild(player['buttonDASH']);

	    /* Panel Widesize Button */
	    player['buttonWidesize'] = createMyElement('div', option['widesize'] ? '&lt;' : '&gt;', 'click', 'widesize', '');
	    player['buttonWidesize'].title = '{Widesize: click to enter player widesize or return to normal size}';
	    styleMyElement(player['buttonWidesize'], {height: panelItemHeight + 'px', border: '1px solid #CCCCCC', borderRadius: '3px', padding: '0px 5px', display: 'inline', color: '#C05800', fontSize: '12px', textShadow: '1px 1px 2px #CCCCCC', cursor: 'pointer'});
	    player['playerPanel'].appendChild(player['buttonWidesize']);

	    /* Panel Fullsize Button */
	    player['buttonFullsize'] = createMyElement('div', option['fullsize'] ? '-' : '+', 'click', 'fullsize', '');
	    player['buttonFullsize'].title = '{Fullsize: click to enter player fullsize or return to normal size}';
	    styleMyElement(player['buttonFullsize'], {height: panelItemHeight + 'px', border: '1px solid #CCCCCC', borderRadius: '3px', padding: '0px 5px', display: 'inline', color: '#C05800', fontSize: '12px', textShadow: '1px 1px 2px #CCCCCC', cursor: 'pointer'});
	    player['playerPanel'].appendChild(player['buttonFullsize']);

	    /* The Content */
	    player['contentWidth'] = player['playerWidth'];
	    player['contentHeight'] = player['playerHeight'] - player['panelHeight'] - player['panelPadding'] * 2;
	    player['playerContent'] = createMyElement('div', '', '', '', '');
	    styleMyElement(player['playerContent'], {width: player['contentWidth'] + 'px', height: player['contentHeight'] + 'px', position: 'relative', color: '#AD0000', backgroundColor: '#000000', fontSize: '14px', fontWeight: 'bold', textAlign: 'center'});
	    player['playerWindow'].appendChild(player['playerContent']);

	    /* The Video Thumbnail */
	    if (player['videoThumb']) {
		player['contentImage'] = createMyElement('img', player['videoThumb'], 'click', 'play', '');
		player['contentImage'].title = '{Click to start video playback}';
		styleMyElement(player['contentImage'], {maxWidth: '100%', maxHeight: '100%', position: 'absolute', top: '0px', left: '0px', right: '0px', bottom: '0px', margin: 'auto', border: '0px', cursor: 'pointer'});
		player['contentImage'].addEventListener('load', function() {
		    if (this.width/this.height >= player['contentWidth']/player['contentHeight']) {
			this.style.width = '100%';
		    }
		    else {
			this.style.height = '100%';
		    }
		});
	    }

	    /* Resize My Player */
	    if (option['widesize']) resizeMyPlayer('widesize');
	    if (option['fullsize']) resizeMyPlayer('fullsize');

	    /* Play My Video */
	    playMyVideo(option['autoplay']);
	}
	promise = browser.storage.local.get(Object.keys(option));
	promise.then(onGot, onGot);
    }

    function playDASHwithHTML5() {
	console.log(player['videoList']);
	if (player['videoPlay'].indexOf('MP4') != -1) {
	    player['contentVideo'] = createMyElement('video', player['videoList'][player['videoPlay'].replace(/MP4/, 'Video MP4')], '', '', '');
	    if (player['videoList']['High Bitrate Audio Opus']) {
		player['contentAudio'] = createMyElement('video', player['videoList']['High Bitrate Audio Opus'], '', '', '');
	    }
	    else if (player['videoList']['Medium Bitrate Audio Opus']) {
		player['contentAudio'] = createMyElement('video', player['videoList']['Medium Bitrate Audio Opus'], '', '', '');
	    }
	    else {
		player['contentAudio'] = createMyElement('video', player['videoList']['Medium Bitrate Audio MP4'], '', '', '');
	    }
	}
	else {
	    player['contentVideo'] = createMyElement('video', player['videoList'][player['videoPlay'].replace(/WebM/, 'Video WebM')], '', '', '');
	    if (player['videoList']['High Bitrate Audio Opus']) {
		player['contentAudio'] = createMyElement('video', player['videoList']['High Bitrate Audio Opus'], '', '', '');
	    }
	    else if (player['videoList']['Medium Bitrate Audio Opus']) {
		player['contentAudio'] = createMyElement('video', player['videoList']['Medium Bitrate Audio Opus'], '', '', '');
	    }
	    else {
		player['contentAudio'] = createMyElement('video', player['videoList']['Medium Bitrate Audio WebM'], '', '', '');
	    }
	}
	player['contentAudio'].pause();
	player['contentVideo'].addEventListener('play', function() {
	    player['contentAudio'].play();
	}, false);
	player['contentVideo'].addEventListener('pause', function() {
	    player['contentAudio'].pause();
	}, false);
	player['contentVideo'].addEventListener('ended', function() {
	    player['contentVideo'].pause();
	    player['contentAudio'].pause();
	}, false);
	player['contentVideo'].addEventListener('timeupdate', function() {
	    if (player['contentAudio'].paused && !player['contentVideo'].paused) {
		player['contentAudio'].play();
	    }
	    if (Math.abs(player['contentVideo'].currentTime - player['contentAudio'].currentTime) >= 0.30) {
		player['contentAudio'].currentTime = player['contentVideo'].currentTime;
	    }
	}, false);
	styleMyElement(player['contentAudio'], {display: 'none'});
	player['contentVideo'].appendChild(player['contentAudio']);
    }

    function playMyVideo(play) {
	player['isPlaying'] = play;
	modifyMyElement(player['playerContent'], 'div', '', true);
	if (play) {
	    if (player['videoList'][player['videoPlay']] == 'DASH')
		playDASHwithHTML5();
	    else
		player['contentVideo'] = createMyElement('video', player['videoList'][player['videoPlay']], '', '', '');
	    player['contentVideo'].width = player['contentWidth'];
	    player['contentVideo'].height = player['contentHeight'];
	    player['contentVideo'].poster = player['videoThumb'];
	    styleMyElement(player['contentVideo'], {position: 'relative', width: player['contentWidth'] + 'px', height: player['contentHeight'] + 'px'});
	    player['playerContent'].appendChild(player['contentVideo']);
	}
	else {
	    if (player['contentImage'])
		player['playerContent'].appendChild(player['contentImage']);
	    else showMyMessage('!thumb');
	}
    }

    function resizeMyPlayer(size) {
	switch (size) {
	case 'widesize':
	    if (option['widesize']) {
		if (player['buttonWidesize']) modifyMyElement(player['buttonWidesize'], 'div', '&lt;', false);
		var playerWidth = player['playerWideWidth'];
		var playerHeight= player['playerWideHeight'];
		var sidebarMargin = player['sidebarMarginWide'];
	    }
	    else {
		if (player['buttonWidesize']) modifyMyElement(player['buttonWidesize'], 'div', '&gt;', false);
		var playerWidth = player['playerWidth'];
		var playerHeight= player['playerHeight'];
		var sidebarMargin = player['sidebarMarginNormal'];
	    }
	    break;
	case 'fullsize':
	    if (option['fullsize']) {
		var playerPosition = 'fixed';
		var playerWidth = page.win.innerWidth || page.doc.documentElement.clientWidth;
		var playerHeight = page.win.innerHeight || page.doc.documentElement.clientHeight;
		var playerIndex = '9999999999';
		if (!player['isFullsize']) {
		    styleMyElement(player['buttonWidesize'], {display: 'none'});
		    modifyMyElement(player['buttonFullsize'], 'div', '-', false);
		    page.body.appendChild(player['playerWindow']);
		    styleMyElement(page.body, {overflow: 'hidden'});
		    styleMyElement(page.body.parentNode, {overflow: 'hidden'});
		    if (!player['resizeListener']) player['resizeListener'] = function() {resizeMyPlayer('fullsize')};
		    page.win.addEventListener('resize', player['resizeListener'], false);
		    player['isFullsize'] = true;
		    if (player['isPlaying']) {
			if (player['contentVideo'] && player['contentVideo'].paused) player['contentVideo'].play();
		    }
		}
	    }
	    else {
		var playerPosition = 'relative';
		var playerWidth = (option['widesize']) ? player['playerWideWidth'] : player['playerWidth'];
		var playerHeight = (option['widesize']) ? player['playerWideHeight'] : player['playerHeight'];
		var playerIndex = 'auto';
		styleMyElement(player['buttonWidesize'], {display: 'inline'});
		modifyMyElement(player['buttonFullsize'], 'div', '+', false);
		player['playerSocket'].appendChild(player['playerWindow']);
		styleMyElement(page.body, {overflow: 'auto'});
		styleMyElement(page.body.parentNode, {overflow: 'auto'});
		page.win.removeEventListener('resize', player['resizeListener'], false);
		player['isFullsize'] = false;
		if (player['isPlaying']) {
		    if (player['contentVideo'] && player['contentVideo'].paused) player['contentVideo'].play();
		}
	    }
	    break;
	}

	/* Resize The Player */
	if (size == 'widesize') {
	    if (player['sidebarWindow']) styleMyElement(player['sidebarWindow'], {marginTop: sidebarMargin + 'px'});
	    styleMyElement(player['playerWindow'], {width: playerWidth + 'px', height: playerHeight + 'px'});
	}
	else styleMyElement(player['playerWindow'], {position: playerPosition, top: '0px', left: '0px', width: playerWidth + 'px', height: playerHeight + 'px', zIndex: playerIndex});

	/* Resize The Panel */
	var panelWidth = playerWidth - player['panelPadding'] * 2;
	styleMyElement(player['playerPanel'], {width: panelWidth + 'px'});

	/* Resize The Content */
	player['contentWidth'] = playerWidth;
	player['contentHeight'] = playerHeight - player['panelHeight'] - player['panelPadding'] * 2;
	styleMyElement(player['playerContent'], {width: player['contentWidth'] + 'px', height: player['contentHeight'] + 'px'});
	if (player['isPlaying']) {
	    player['contentVideo'].width = player['contentWidth'];
	    player['contentVideo'].height = player['contentHeight'];
	    styleMyElement(player['contentVideo'], {width: player['contentWidth'] + 'px', height: player['contentHeight'] + 'px'});
	}
    }

    function cleanMyContent(content, unesc) {
	var myNewContent = content;
	if (unesc) myNewContent = unescape(myNewContent);
	myNewContent = myNewContent.replace(/\\u0025/g,'%');
	myNewContent = myNewContent.replace(/\\u0026/g,'&');
	myNewContent = myNewContent.replace(/\\/g,'');
	myNewContent = myNewContent.replace(/\n/g,'');
	return myNewContent;
    }

    function getMyContent(url, pattern, clean) {
	var myPageContent, myVideosParse, myVideosContent;
	var getMethod = (url != page.url) ? 'XHR' : 'DOM';
	if (!sources[url]) sources[url] = {};
	if (getMethod == 'DOM') {
	    if (!sources[url]['DOM']) {
		sources[url]['DOM'] = getMyElement('', 'html', 'tag', '', 0, true);
		if (!sources[url]['DOM']) sources[url]['DOM'] = getMyElement('', 'body', '', '', -1, true);
	    }
	    myPageContent = sources[url]['DOM'];
	    if (clean) myPageContent = cleanMyContent(myPageContent, true);
	    myVideosParse = myPageContent.match(pattern);
	    myVideosContent = (myVideosParse) ? myVideosParse[1] : null;
	    if (myVideosContent) return myVideosContent;
	    else getMethod = 'XHR';
	}
	if (getMethod == 'XHR') {
	    if (!sources[url]['XHR']) sources[url]['XHR'] = {};
	    if ((pattern == 'XML' && !sources[url]['XHR']['XML']) || (pattern != 'XML' && !sources[url]['XHR']['TEXT'])) {
		var xmlHTTP = new XMLHttpRequest();
		xmlHTTP.open('GET', url, false);
		xmlHTTP.send();
		if (pattern == 'XML') sources[url]['XHR']['XML'] = xmlHTTP.responseXML;
		else sources[url]['XHR']['TEXT'] = xmlHTTP.responseText;
	    }
	    if (pattern == 'XML') {
		myVideosContent = sources[url]['XHR']['XML'];
	    }
	    else if (pattern == 'TEXT') {
		myVideosContent = sources[url]['XHR']['TEXT'];
	    }
	    else {
		myPageContent = sources[url]['XHR']['TEXT'];
		if (clean) myPageContent = cleanMyContent(myPageContent, true);
		myVideosParse = myPageContent.match(pattern);
		myVideosContent = (myVideosParse) ? myVideosParse[1] : null;
	    }
	    return myVideosContent;
	}
    }

    function setMyOptions(key, value) {
	var pair = {};
	pair[key] = value;
	browser.storage.local.set(pair);
    }

    function showMyMessage(cause, content) {
	var myScriptLogo = createMyElement('div', userscript, '', '', '');
	styleMyElement(myScriptLogo, {margin: '0px auto', padding: '10px', color: '#666666', fontSize: '24px', textAlign: 'center', textShadow: '#FFFFFF -1px -1px 2px'});
	var myScriptMess = createMyElement('div', '', '', '', '');
	styleMyElement(myScriptMess, {border: '1px solid #F4F4F4', margin: '5px auto 5px auto', padding: '10px', backgroundColor: '#FFFFFF', color: '#AD0000', textAlign: 'center'});
	if (cause == '!player') {
	    var myScriptAlert = createMyElement('div', '', '', '', '');
	    styleMyElement(myScriptAlert, {position: 'absolute', top: '30%', left: '35%', border: '1px solid #F4F4F4', borderRadius: '3px', padding: '10px', backgroundColor: '#FFFFFF', fontSize: '14px', textAlign: 'center', zIndex: '99999'});
	    myScriptAlert.appendChild(myScriptLogo);
	    var myNoPlayerMess = 'Couldn\'t get the player element. Please report it <a href="' + contact + '" style="color:#00892C">here</a>.';
	    modifyMyElement(myScriptMess, 'div', myNoPlayerMess, false);
	    myScriptAlert.appendChild(myScriptMess);
	    var myScriptAlertButton = createMyElement('div', 'OK', 'click', 'close', myScriptAlert);
	    styleMyElement(myScriptAlertButton, {width: '100px', border: '3px solid #EEEEEE', borderRadius: '5px', margin: '0px auto', backgroundColor: '#EEEEEE', color: '#666666', fontSize: '18px', textAlign: 'center', textShadow: '#FFFFFF -1px -1px 2px', cursor: 'pointer'});
	    myScriptAlert.appendChild(myScriptAlertButton);
	    page.body.appendChild(myScriptAlert);
	}
	else if (cause == '!thumb') {
	    var myNoThumbMess = '<br><br>Couldn\'t get the thumbnail for this video. Please report it <a href="' + contact + '" style="color:#00892C">here</a>.';
	    modifyMyElement(player['playerContent'], 'div', myNoThumbMess, false);
	}
	else {
	    myPlayerWindow.appendChild(myScriptLogo);
	    if (cause == '!content') {
		var myNoContentMess = 'Couldn\'t get the videos content. Please report it <a href="' + contact + '" style="color:#00892C">here</a>.';
		modifyMyElement(myScriptMess, 'div', myNoContentMess, false);
	    }
	    else if (cause == '!videos') {
		var myNoVideosMess = 'Couldn\'t get any video. Please report it <a href="' + contact + '" style="color:#00892C">here</a>.';
		modifyMyElement(myScriptMess, 'div', myNoVideosMess, false);
	    }
	    else if (cause == '!support') {
		var myNoSupportMess = 'This video uses the RTMP protocol and is not supported.';
		modifyMyElement(myScriptMess, 'div', myNoSupportMess, false);
	    }
	    else if (cause == 'embed') {
		var myEmbedMess = 'This is an embedded video. You can watch it <a href="' + content + '" style="color:#00892C">here</a>.';
		modifyMyElement(myScriptMess, 'div', myEmbedMess, false);
	    }
	    else if (cause == 'other') {
		modifyMyElement(myScriptMess, 'div', content, false);
	    }
	    myPlayerWindow.appendChild(myScriptMess);
	}
    }

    // =====YouTube===== //

    /* Redirect Categories */
    if (page.url.indexOf('gaming.youtube.com') != -1) {
	page.win.location.href = page.url.replace('gaming', 'www');
    }

    /* Video Availability */
    var ytVideoUnavailable = getMyElement('', 'div', 'id', 'player-unavailable', -1, false);
    if (ytVideoUnavailable) {
	if (ytVideoUnavailable.className.indexOf('hid') == -1) {
	    var ytAgeGateContent = getMyElement('', 'div', 'id', 'watch7-player-age-gate-content', -1, true);
	    if (!ytAgeGateContent) return;
	    else {
		if(ytAgeGateContent.indexOf('feature=private_video') != -1) return;
	    }
	}
    }

    /* Decrypt Signature */
    var ytScriptSrc;
    function ytDecryptSignature(s) {return null;}
    function ytDecryptFunction() {
	var ytSignFuncName, ytSignFuncBody, ytSwapFuncName, ytSwapFuncBody, ytFuncMatch;
	ytScriptSrc = ytScriptSrc.replace(/(\r\n|\n|\r)/gm, '');
	ytSignFuncName = ytScriptSrc.match(/"signature"\s*,\s*([^\)]*?)\(/);
	ytSignFuncName = (ytSignFuncName) ? ytSignFuncName[1] : null;
	if (ytSignFuncName) {
	    ytFuncMatch = ytSignFuncName.replace(/\$/, '\\$') + '\\s*=\\s*function\\s*' + '\\s*\\(\\w+\\)\\s*\\{(.*?)\\}';
	    ytSignFuncBody = ytScriptSrc.match(ytFuncMatch);
	    ytSignFuncBody = (ytSignFuncBody) ? ytSignFuncBody[1] : null;
	    if (ytSignFuncBody) {
		ytSwapFuncName = ytSignFuncBody.match(/((\$|_|\w)+)\.(\$|_|\w)+\(\w,[0-9]+\)/);
		ytSwapFuncName = (ytSwapFuncName) ? ytSwapFuncName[1] : null;
		if (ytSwapFuncName) {
		    ytFuncMatch = 'var\\s+' + ytSwapFuncName.replace(/\$/, '\\$') + '=\\s*\\{(.*?)\\};';
		    ytSwapFuncBody = ytScriptSrc.match(ytFuncMatch);
		    ytSwapFuncBody = (ytSwapFuncBody) ? ytSwapFuncBody[1] : null;
		}
		if (ytSwapFuncBody) ytSignFuncBody = 'var ' + ytSwapFuncName + '={' + ytSwapFuncBody + '};' + ytSignFuncBody;
		ytSignFuncBody = 'try {' + ytSignFuncBody + '} catch(e) {return null}';
		ytDecryptSignature = new Function('a', ytSignFuncBody);
	    }
	}
    }

    /* Player Size */
    var ytSidebarMarginNormal = 382;
    var ytSidebarWindow = getMyElement('', 'div', 'id', 'watch7-sidebar', -1, false);
    if (ytSidebarWindow) {
	var ytSidebarWindowStyle = ytSidebarWindow.currentStyle || window.getComputedStyle(ytSidebarWindow);
	if (ytSidebarWindowStyle) ytSidebarMarginNormal = -12 + parseInt(ytSidebarWindowStyle.marginTop.replace('px', ''));
	styleMyElement(ytSidebarWindow, {marginTop: ytSidebarMarginNormal + 'px'});
    }
    var ytPlayerWidth, ytPlayerHeight;
    var ytPlayerWideWidth, ytPlayerWideHeight;
    var ytSidebarMarginWide;
    var ytScreenWidth, ytScreenHeight;
    function ytSizes() {
	ytScreenWidth = page.win.innerWidth || page.doc.documentElement.clientWidth;
	ytScreenHeight = page.win.innerHeight || page.doc.documentElement.clientHeight;
	if (ytScreenWidth >= 1720 && ytScreenHeight >= 980) {
	    ytPlayerWidth = 1280;
	    ytPlayerHeight = 742;
	    ytPlayerWideWidth = 1706;
	    ytPlayerWideHeight = 982;
	}
	else if (ytScreenWidth >= 1294 && ytScreenHeight >= 630) {
	    ytPlayerWidth = 854;
	    ytPlayerHeight = 502;
	    ytPlayerWideWidth = 1280;
	    ytPlayerWideHeight = 742;
	}
	else {
	    ytPlayerWidth = 640;
	    ytPlayerHeight = 382;
	    ytPlayerWideWidth = 1066;
	    ytPlayerWideHeight = 622;
	}
	ytSidebarMarginWide = ytPlayerHeight + ytSidebarMarginNormal;
    }

    /* Get Player Window */
    var ytPlayerWindow = document.querySelector("#player");
    if (!ytPlayerWindow) {
	showMyMessage('!player');
    }
    else {
	/* Get Video Thumbnail */
	var ytVideoThumb = getMyContent(page.url, 'link\\s+itemprop="thumbnailUrl"\\s+href="(.*?)"', false);
	if (!ytVideoThumb) ytVideoThumb = getMyContent(page.url, 'meta\\s+property="og:image"\\s+content="(.*?)"', false);
	if (!ytVideoThumb) {
	    var ytVideoID = page.url.match(/(\?|&)v=(.*?)(&|$)/);
	    if (ytVideoID) ytVideoThumb = 'https://img.youtube.com/vi/' + ytVideoID[2] + '/0.jpg';
	}

	/* Get Video Title */
	var ytVideoTitle = getMyContent(page.url, 'meta\\s+itemprop="name"\\s+content="(.*?)"', false);
	if (!ytVideoTitle) ytVideoTitle = getMyContent(page.url, 'meta\\s+property="og:title"\\s+content="(.*?)"', false);
	if (!ytVideoTitle) ytVideoTitle = page.doc.title;
	if (ytVideoTitle) {
	    ytVideoTitle = ytVideoTitle.replace(/&quot;/g, '\'').replace(/&#34;/g, '\'').replace(/"/g, '\'');
	    ytVideoTitle = ytVideoTitle.replace(/&#39;/g, '\'').replace(/'/g, '\'');
	    ytVideoTitle = ytVideoTitle.replace(/&amp;/g, 'and').replace(/&/g, 'and');
	    ytVideoTitle = ytVideoTitle.replace(/\?/g, '').replace(/[#:\*]/g, '-').replace(/\//g, '-');
	    ytVideoTitle = ytVideoTitle.replace(/^\s+|\s+$/, '').replace(/\.+$/g, '');
	    ytVideoTitle = ytVideoTitle.replace(/^YouTube\s-\s/, '');
	}

	/* Get Videos Content */
	var ytVideosEncodedFmts, ytVideosAdaptiveFmts, ytVideosContent, ytHLSVideos, ytHLSContent;
	ytVideosEncodedFmts = getMyContent(page.url, '"url_encoded_fmt_stream_map":\\s*"(.*?)"', false);
	if (!ytVideosEncodedFmts) ytVideosEncodedFmts = getMyContent(page.url, '\\\\"url_encoded_fmt_stream_map\\\\":\\s*\\\\"(.*?)\\\\"', false);
	ytVideosAdaptiveFmts = getMyContent(page.url, '"adaptive_fmts":\\s*"(.*?)"', false);
	if (!ytVideosAdaptiveFmts) ytVideosAdaptiveFmts = getMyContent(page.url, '\\\\"adaptive_fmts\\\\":\\s*\\\\"(.*?)\\\\"', false);
	if (ytVideosEncodedFmts) {
	    ytVideosContent = ytVideosEncodedFmts;
	}
	else {
	    ytHLSVideos = getMyContent(page.url, '"hlsvp":\\s*"(.*?)"', false);
	    if (!ytHLSVideos) ytHLSVideos = getMyContent(page.url, '\\\\"hlsvp\\\\":\\s*\\\\"(.*?)\\\\"', false);
	    if (ytHLSVideos) {
		ytHLSVideos = cleanMyContent(ytHLSVideos, false);
		if (ytHLSVideos.indexOf('keepalive/yes/') != -1) ytHLSVideos = ytHLSVideos.replace('keepalive/yes/', '');
	    }
	    else {
		var ytVideoID = page.url.match(/(\?|&)v=(.*?)(&|$)/);
		ytVideoID = (ytVideoID) ? ytVideoID[2] : null;
		if (ytVideoID) {
		    var ytVideoSts = getMyContent(page.url.replace(/watch.*?v=/, 'embed/').replace(/&.*$/, ''), '"sts"\\s*:\\s*(\\d+)', false);
		    var ytVideosInfoURL = page.win.location.protocol + '//' + page.win.location.hostname + '/get_video_info?video_id=' + ytVideoID + '&eurl=https://youtube.googleapis.com/v/' + ytVideoID + '&sts=' + ytVideoSts;
		    var ytVideosInfo = getMyContent(ytVideosInfoURL, 'TEXT', false);
		    if (ytVideosInfo) {
			ytVideosEncodedFmts = ytVideosInfo.match(/url_encoded_fmt_stream_map=(.*?)&/);
			ytVideosEncodedFmts = (ytVideosEncodedFmts) ? ytVideosEncodedFmts[1] : null;
			if (ytVideosEncodedFmts) {
			    ytVideosEncodedFmts = cleanMyContent(ytVideosEncodedFmts, true);
			    ytVideosContent = ytVideosEncodedFmts;
			}
			if (!ytVideosAdaptiveFmts) {
			    ytVideosAdaptiveFmts = ytVideosInfo.match(/adaptive_fmts=(.*?)&/);
			    ytVideosAdaptiveFmts = (ytVideosAdaptiveFmts) ? ytVideosAdaptiveFmts[1] : null;
			    if (ytVideosAdaptiveFmts) ytVideosAdaptiveFmts = cleanMyContent(ytVideosAdaptiveFmts, true);
			}
		    }
		}
	    }
	}
	if (ytVideosAdaptiveFmts && !ytHLSVideos) {
	    if (ytVideosContent) ytVideosContent += ',' + ytVideosAdaptiveFmts;
	    else ytVideosContent = ytVideosAdaptiveFmts;
	}

	/* Get Sizes */
	ytSizes();

	function removeElements (selector) {
	    document.querySelectorAll(selector).forEach(function (element) { element.remove(); });
	}

	/* Remove Player Window */
	removeElements("#placeholder-player");

	/* Remove Sidebar Ads */
	removeElements("#watch7-sidebar-ads");

	/* Playlist */
	var ytPlaylist = document.querySelector("#player-playlist");
	if (ytPlaylist) {
	    styleMyElement(ytPlaylist, {marginLeft: '-' + ytPlayerWidth + 'px'});
	    var ytPlaceholderPlaylist = document.querySelector("#placeholder-playlist");
	    if (ytPlaceholderPlaylist) ytPlaceholderPlaylist.appendChild(ytPlaylist);
	}

	/* My Player Window */
	var myPlayerWindow = createMyElement('div', '', '', '', '');
	styleMyElement(myPlayerWindow, {position: 'relative', width: ytPlayerWidth + 'px', height: ytPlayerHeight + 'px', backgroundColor: '#FFFFFF'});
	modifyMyElement(ytPlayerWindow, 'div', '', false, true);
	ytPlayerWindow.appendChild(myPlayerWindow);

	/* Update Sizes */
	page.win.addEventListener('resize', function() {
	    ytSizes();
	    player['playerWidth'] = ytPlayerWidth;
	    player['playerHeight'] = ytPlayerHeight;
	    player['playerWideWidth'] = ytPlayerWideWidth;
	    player['playerWideHeight'] = ytPlayerWideHeight;
	    player['sidebarMarginWide'] = ytSidebarMarginWide;
	    resizeMyPlayer('widesize');
	    if (ytPlaylist) styleMyElement(ytPlaylist, {marginLeft: '-' + ytPlayerWidth + 'px'});
	}, false);

	/* Create Player */
	var ytDefaultVideo = 'Low Definition MP4';
	function ytPlayer() {
	    player = {
		'playerSocket': ytPlayerWindow,
		'playerWindow': myPlayerWindow,
		'videoList': ytVideoList,
		'videoPlay': ytDefaultVideo,
		'videoThumb': ytVideoThumb,
		'videoTitle': ytVideoTitle,
		'playerWidth': ytPlayerWidth,
		'playerHeight': ytPlayerHeight,
		'playerWideWidth': ytPlayerWideWidth,
		'playerWideHeight': ytPlayerWideHeight,
		'sidebarWindow': ytSidebarWindow,
		'sidebarMarginNormal': ytSidebarMarginNormal,
		'sidebarMarginWide': ytSidebarMarginWide
	    };
	    option['definitions'] = ['Ultra High Definition', 'Full High Definition', 'High Definition', 'Standard Definition', 'Low Definition', 'Very Low Definition'];
	    option['containers'] = ['MP4', 'WebM', 'FLV', '3GP', 'Any'];
	    createMyPlayer();
	}

	/* Parse Videos */
	function ytVideos() {
	    var ytVideoFormats = {
		'5': 'Very Low Definition FLV',
		'17': 'Very Low Definition 3GP',
		'18': 'Low Definition MP4',
		'22': 'High Definition MP4',
		'34': 'Low Definition FLV',
		'35': 'Standard Definition FLV',
		'36': 'Low Definition 3GP',
		'37': 'Full High Definition MP4',
		'38': 'Ultra High Definition MP4',
		'43': 'Low Definition WebM',
		'44': 'Standard Definition WebM',
		'45': 'High Definition WebM',
		'46': 'Full High Definition WebM',
		'82': 'Low Definition 3D MP4',
		'83': 'Standard Definition 3D MP4',
		'84': 'High Definition 3D MP4',
		'85': 'Full High Definition 3D MP4',
		'100': 'Low Definition 3D WebM',
		'101': 'Standard Definition 3D WebM',
		'102': 'High Definition 3D WebM',
		'135': 'Standard Definition Video MP4',
		'136': 'High Definition Video MP4',
		'137': 'Full High Definition Video MP4',
		'138': 'Ultra High Definition Video MP4',
		'139': 'Low Bitrate Audio MP4',
		'140': 'Medium Bitrate Audio MP4',
		'141': 'High Bitrate Audio MP4',
		'171': 'Medium Bitrate Audio WebM',
		'172': 'High Bitrate Audio WebM',
		'244': 'Standard Definition Video WebM',
		'247': 'High Definition Video WebM',
		'248': 'Full High Definition Video WebM',
		'249': 'Low Bitrate Audio Opus',
		'250': 'Medium Bitrate Audio Opus',
		'251': 'High Bitrate Audio Opus',
		'266': 'Ultra High Definition Video MP4',
		'272': 'Ultra High Definition Video WebM',
		'298': 'High Definition Video MP4',
		'299': 'Full High Definition Video MP4',
		'302': 'High Definition Video WebM',
		'303': 'Full High Definition Video WebM',
		'313': 'Ultra High Definition Video WebM'
	    };
	    var ytVideoFound = false;
	    var ytVideos = ytVideosContent.split(',');
	    var ytVideoParse, ytVideoCodeParse, ytVideoCode, myVideoCode, ytVideo;
	    for (var i = 0; i < ytVideos.length; i++) {
		if (!ytVideos[i].match(/^url/)) {
		    ytVideoParse = ytVideos[i].match(/(.*)(url=.*$)/);
		    if (ytVideoParse) ytVideos[i] = ytVideoParse[2] + '&' + ytVideoParse[1];
		}
		ytVideoCodeParse = ytVideos[i].match(/itag=(\d{1,3})/);
		ytVideoCode = (ytVideoCodeParse) ? ytVideoCodeParse[1] : null;
		if (ytVideoCode) {
		    myVideoCode = ytVideoFormats[ytVideoCode];
		    if (myVideoCode) {
			ytVideo = cleanMyContent(ytVideos[i], true);
			ytVideo = ytVideo.replace(/url=/, '').replace(/&$/, '');
			if (ytVideo.match(/itag=/) && ytVideo.match(/itag=/g).length > 1) {
			    if (ytVideo.match(/itag=\d{1,3}&/)) ytVideo = ytVideo.replace(/itag=\d{1,3}&/, '');
			    else if (ytVideo.match(/&itag=\d{1,3}/)) ytVideo = ytVideo.replace(/&itag=\d{1,3}/, '');
			}
			if (ytVideo.match(/clen=/) && ytVideo.match(/clen=/g).length > 1) {
			    if (ytVideo.match(/clen=\d+&/)) ytVideo = ytVideo.replace(/clen=\d+&/, '');
			    else if (ytVideo.match(/&clen=\d+/)) ytVideo = ytVideo.replace(/&clen=\d+/, '');
			}
			if (ytVideo.match(/lmt=/) && ytVideo.match(/lmt=/g).length > 1) {
			    if (ytVideo.match(/lmt=\d+&/)) ytVideo = ytVideo.replace(/lmt=\d+&/, '');
			    else if (ytVideo.match(/&lmt=\d+/)) ytVideo = ytVideo.replace(/&lmt=\d+/, '');
			}
			if (ytVideo.match(/type=(video|audio).*?&/)) ytVideo = ytVideo.replace(/type=(video|audio).*?&/, '');
			else ytVideo = ytVideo.replace(/&type=(video|audio).*$/, '');
			if (ytVideo.match(/xtags=[^%=]*&/)) ytVideo = ytVideo.replace(/xtags=[^%=]*?&/, '');
			else if (ytVideo.match(/&xtags=[^%=]*$/)) ytVideo = ytVideo.replace(/&xtags=[^%=]*$/, '');
			if (ytVideo.match(/&sig=/)) ytVideo = ytVideo.replace(/&sig=/, '&signature=');
			else if (ytVideo.match(/&s=/)) {
			    var ytSig = ytVideo.match(/&s=(.*?)(&|$)/);
			    if (ytSig) {
				var s = ytSig[1];
				s = ytDecryptSignature(s);
				if (s) ytVideo = ytVideo.replace(/&s=.*?(&|$)/, '&signature=' + s + '$1');
				else ytVideo = '';
			    }
			    else ytVideo = '';
			}
			ytVideo = cleanMyContent(ytVideo, true);
			if (ytVideo.indexOf('ratebypass') == -1) ytVideo += '&ratebypass=yes';
			if (ytVideo && ytVideo.indexOf('http') == 0) {
			    if (!ytVideoFound) ytVideoFound = true;
			    ytVideoList[myVideoCode] = ytVideo;
			}
		    }
		}
	    }

	    if (ytVideoFound) {
		/* DASH */
		if (!ytVideoList['Standard Definition MP4'] && ytVideoList['Standard Definition Video MP4']) ytVideoList['Standard Definition MP4'] = 'DASH';
		if (!ytVideoList['High Definition MP4'] && ytVideoList['High Definition Video MP4']) ytVideoList['High Definition MP4'] = 'DASH';
		if (!ytVideoList['Full High Definition MP4'] && ytVideoList['Full High Definition Video MP4']) ytVideoList['Full High Definition MP4'] = 'DASH';
		if (!ytVideoList['Ultra High Definition MP4'] && ytVideoList['Ultra High Definition Video MP4']) ytVideoList['Ultra High Definition MP4'] = 'DASH';
		if (!ytVideoList['Standard Definition WebM'] && ytVideoList['Standard Definition Video WebM']) ytVideoList['Standard Definition WebM'] = 'DASH';
		if (!ytVideoList['High Definition WebM'] && ytVideoList['High Definition Video WebM']) ytVideoList['High Definition WebM'] = 'DASH';
		if (!ytVideoList['Full High Definition WebM'] && ytVideoList['Full High Definition Video WebM']) ytVideoList['Full High Definition WebM'] = 'DASH';
		if (!ytVideoList['Ultra High Definition WebM'] && ytVideoList['Ultra High Definition Video WebM']) ytVideoList['Ultra High Definition WebM'] = 'DASH';

		/* DVL */
		ytVideoList['Direct Video Link'] = page.url;

		ytPlayer();
	    }
	    else {
		if (ytVideosContent.indexOf('conn=rtmp') != -1) showMyMessage('!support');
		else showMyMessage('!videos');
	    }
	}

	/* Parse HLS */
	function ytHLS() {
	    var ytHLSFormats = {
		'92': 'Very Low Definition MP4',
		'93': 'Low Definition MP4',
		'94': 'Standard Definition MP4',
		'95': 'High Definition MP4',
		'96': 'Full High Definition MP4'
	    };
	    ytVideoList["Any Definition MP4"] = ytHLSVideos;
	    if (ytHLSContent) {
		var ytHLSVideo, ytVideoCodeParse, ytVideoCode, myVideoCode;
		var ytHLSMatcher = new RegExp('(http.*?m3u8)', 'g');
		ytHLSVideos = ytHLSContent.match(ytHLSMatcher);
		if (ytHLSVideos) {
		    for (var i = 0; i < ytHLSVideos.length; i++) {
			ytHLSVideo = ytHLSVideos[i];
			ytVideoCodeParse = ytHLSVideo.match(/\/itag\/(\d{1,3})\//);
			ytVideoCode = (ytVideoCodeParse) ? ytVideoCodeParse[1] : null;
			if (ytVideoCode) {
			    myVideoCode = ytHLSFormats[ytVideoCode];
			    if (myVideoCode && ytHLSVideo) {
				ytVideoList[myVideoCode] = ytHLSVideo;
			    }
			}
		    }
		}
	    }

	    /* DVL */
	    ytVideoList['Direct Video Link'] = page.url;

	    ytVideoTitle = null;
	    ytDefaultVideo = 'Any Definition MP4';
	    ytPlayer();
	}

	/* Get Videos */
	var ytVideoList = {};
	if (ytVideosContent) {
	    if (ytVideosContent.match(/&s=/) || ytVideosContent.match(/,s=/) || ytVideosContent.match(/u0026s=/)) {
		var ytScriptURL = getMyContent(page.url, '"js":\\s*"(.*?)"', true);
		if (!ytScriptURL) ytScriptURL = getMyContent(page.url.replace(/watch.*?v=/, 'embed/').replace(/&.*$/, ''), '"js":\\s*"(.*?)"', true);
		if (ytScriptURL) {
		    ytScriptURL = page.win.location.protocol + ytScriptURL;
		    try {
			ytScriptSrc = getMyContent(ytScriptURL, 'TEXT', false);
			if (ytScriptSrc) ytDecryptFunction();
			ytVideos();
		    }
		    catch(e) {
			try {
			    var oReq = new XMLHttpRequest();
			    oReq.open("GET", ytScriptURL);
			    oReq.onload = function(response) {
				if (response.readyState === 4 && response.status === 200 && response.responseText) {
				    ytScriptSrc = response.responseText;
				    ytDecryptFunction();
				    ytVideos();
				}
				else {
				    showMyMessage('other', 'Couldn\'t get the signature content. Please report it <a href="' + contact + '" style="color:#00892C">here</a>.');
				}
			    };
			    oReq.onerror = function() {
				showMyMessage('other', 'Couldn\'t make the request. Make sure your browser user scripts extension supports cross-domain requests.');
			    };
			    oReq.send();
			}
			catch(e) {
			    showMyMessage('other', 'Couldn\'t make the request. Make sure your browser user scripts extension supports cross-domain requests.');
			}
		    }
		}
		else {
		    showMyMessage('other', 'Couldn\'t get the signature link. Please report it <a href="' + contact + '" style="color:#00892C">here</a>.');
		}
	    }
	    else {
		ytVideos();
	    }
	}
	else {
	    if (ytHLSVideos) {
		try {
		    ytHLSContent = getMyContent(ytHLSVideos, 'TEXT', false);
		    ytHLS();
		}
		catch(e) {
		    try {
			var oReq = new XMLHttpRequest();
			oReq.open("GET", ytHLSVideos);
			oReq.onload = function(response) {
			    if (response.readyState === 4 && response.status === 200 && response.responseText) {
				ytHLSContent = response.responseText;
			    }
			    ytHLS();
			};
			oReq.onerror = function() {
			    ytHLS();
			};
			oReq.send();
		    }
		    catch(e) {
			ytHLS();
		    }
		}
	    }
	    else {
		showMyMessage('!content');
	    }
	}
    }

})();