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Youtube Peek Preview

See video thumbnails, ratings and other details when you mouse over a Youtube link from almost any website

  1. // ==UserScript==
  2. // @name         Youtube Peek Preview
  3. // @namespace    http://tampermonkey.net/
  4. // @version      0.2.3
  5. // @description  See video thumbnails, ratings and other details when you mouse over a Youtube link from almost any website
  6. // @author       scriptpost
  7. // @match        *://*/*
  8. // @exclude      https://twitter.com/*
  9. // @grant        GM_setValue
  10. // @grant        GM_getValue
  11. // @grant        GM_deleteValue
  12. // @grant        GM_registerMenuCommand
  13. // ==/UserScript==
  14. (function () {
  15.     // Remove deprecated storage structure from earlier versions.
  16.     // Configure settings through your browser extension icon, under "Youtube Peek Settings"
  17.     const settings = JSON.parse(GM_getValue('userSettings', '{}'));
  18.     if (settings.hasOwnProperty('REGIONS')) {
  19.         GM_deleteValue('userSettings');
  20.     }
  21. })();
  22. /*!
  23. * Clamp.js 0.5.1
  24. *
  25. * Copyright 2011-2013, Joseph Schmitt http://joe.sh
  26. * Released under the WTFPL license
  27. * http://sam.zoy.org/wtfpl/
  28. */
  29. (function () {
  30.     /**
  31.      * Clamps a text node.
  32.      * @param {HTMLElement} element. Element containing the text node to clamp.
  33.      * @param {Object} options. Options to pass to the clamper.
  34.      */
  35.     function clamp(element, options) {
  36.         options = options || {};
  37.         var self = this, win = window, opt = {
  38.             clamp: options.clamp || 2,
  39.             useNativeClamp: typeof (options.useNativeClamp) != 'undefined' ? options.useNativeClamp : true,
  40.             splitOnChars: options.splitOnChars || ['.', '-', '–', '—', ' '],
  41.             animate: options.animate || false,
  42.             truncationChar: options.truncationChar || '…',
  43.             truncationHTML: options.truncationHTML
  44.         }, sty = element.style, originalText = element.innerHTML, supportsNativeClamp = typeof (element.style.webkitLineClamp) != 'undefined', clampValue = opt.clamp, isCSSValue = clampValue.indexOf && (clampValue.indexOf('px') > -1 || clampValue.indexOf('em') > -1), truncationHTMLContainer;
  45.         if (opt.truncationHTML) {
  46.             truncationHTMLContainer = document.createElement('span');
  47.             truncationHTMLContainer.innerHTML = opt.truncationHTML;
  48.         }
  49.         // UTILITY FUNCTIONS
  50.         /**
  51.          * Return the current style for an element.
  52.          * @param {HTMLElement} elem The element to compute.
  53.          * @param {string} prop The style property.
  54.          * @returns {number}
  55.          */
  56.         function computeStyle(elem, prop) {
  57.             if (!win.getComputedStyle) {
  58.                 win.getComputedStyle = function (el, pseudo) {
  59.                     this.el = el;
  60.                     this.getPropertyValue = function (prop) {
  61.                         var re = /(\-([a-z]){1})/g;
  62.                         if (prop == 'float')
  63.                             prop = 'styleFloat';
  64.                         if (re.test(prop)) {
  65.                             prop = prop.replace(re, function () {
  66.                                 return arguments[2].toUpperCase();
  67.                             });
  68.                         }
  69.                         return el.currentStyle && el.currentStyle[prop] ? el.currentStyle[prop] : null;
  70.                     };
  71.                     return this;
  72.                 };
  73.             }
  74.             return win.getComputedStyle(elem, null).getPropertyValue(prop);
  75.         }
  76.         /**
  77.          * Returns the maximum number of lines of text that should be rendered based
  78.          * on the current height of the element and the line-height of the text.
  79.          */
  80.         function getMaxLines(height) {
  81.             var availHeight = height || element.clientHeight, lineHeight = getLineHeight(element);
  82.             return Math.max(Math.floor(availHeight / lineHeight), 0);
  83.         }
  84.         /**
  85.          * Returns the maximum height a given element should have based on the line-
  86.          * height of the text and the given clamp value.
  87.          */
  88.         function getMaxHeight(clmp) {
  89.             var lineHeight = getLineHeight(element);
  90.             return lineHeight * clmp;
  91.         }
  92.         /**
  93.          * Returns the line-height of an element as an integer.
  94.          */
  95.         function getLineHeight(elem) {
  96.             var lh = computeStyle(elem, 'line-height');
  97.             if (lh == 'normal') {
  98.                 // Normal line heights vary from browser to browser. The spec recommends
  99.                 // a value between 1.0 and 1.2 of the font size. Using 1.1 to split the diff.
  100.                 lh = parseInt(computeStyle(elem, 'font-size')) * 1.2;
  101.             }
  102.             return parseInt(lh);
  103.         }
  104.         // MEAT AND POTATOES (MMMM, POTATOES...)
  105.         var splitOnChars = opt.splitOnChars.slice(0), splitChar = splitOnChars[0], chunks, lastChunk;
  106.         /**
  107.          * Gets an element's last child. That may be another node or a node's contents.
  108.          */
  109.         function getLastChild(elem) {
  110.             //Current element has children, need to go deeper and get last child as a text node
  111.             if (elem.lastChild.children && elem.lastChild.children.length > 0) {
  112.                 return getLastChild(Array.prototype.slice.call(elem.children).pop());
  113.             }
  114.             //This is the absolute last child, a text node, but something's wrong with it. Remove it and keep trying
  115.             else if (!elem.lastChild || !elem.lastChild.nodeValue || elem.lastChild.nodeValue == '' || elem.lastChild.nodeValue == opt.truncationChar) {
  116.                 elem.lastChild.parentNode.removeChild(elem.lastChild);
  117.                 return getLastChild(element);
  118.             }
  119.             //This is the last child we want, return it
  120.             else {
  121.                 return elem.lastChild;
  122.             }
  123.         }
  124.         /**
  125.          * Removes one character at a time from the text until its width or
  126.          * height is beneath the passed-in max param.
  127.          */
  128.         function truncate(target, maxHeight) {
  129.             if (!maxHeight) {
  130.                 return;
  131.             }
  132.             /**
  133.              * Resets global variables.
  134.              */
  135.             function reset() {
  136.                 splitOnChars = opt.splitOnChars.slice(0);
  137.                 splitChar = splitOnChars[0];
  138.                 chunks = null;
  139.                 lastChunk = null;
  140.             }
  141.             var nodeValue = target.nodeValue.replace(opt.truncationChar, '');
  142.             //Grab the next chunks
  143.             if (!chunks) {
  144.                 //If there are more characters to try, grab the next one
  145.                 if (splitOnChars.length > 0) {
  146.                     splitChar = splitOnChars.shift();
  147.                 }
  148.                 //No characters to chunk by. Go character-by-character
  149.                 else {
  150.                     splitChar = '';
  151.                 }
  152.                 chunks = nodeValue.split(splitChar);
  153.             }
  154.             //If there are chunks left to remove, remove the last one and see if
  155.             // the nodeValue fits.
  156.             if (chunks.length > 1) {
  157.                 // console.log('chunks', chunks);
  158.                 lastChunk = chunks.pop();
  159.                 // console.log('lastChunk', lastChunk);
  160.                 applyEllipsis(target, chunks.join(splitChar));
  161.             }
  162.             //No more chunks can be removed using this character
  163.             else {
  164.                 chunks = null;
  165.             }
  166.             //Insert the custom HTML before the truncation character
  167.             if (truncationHTMLContainer) {
  168.                 target.nodeValue = target.nodeValue.replace(opt.truncationChar, '');
  169.                 element.innerHTML = target.nodeValue + ' ' + truncationHTMLContainer.innerHTML + opt.truncationChar;
  170.             }
  171.             //Search produced valid chunks
  172.             if (chunks) {
  173.                 //It fits
  174.                 if (element.clientHeight <= maxHeight) {
  175.                     //There's still more characters to try splitting on, not quite done yet
  176.                     if (splitOnChars.length >= 0 && splitChar != '') {
  177.                         applyEllipsis(target, chunks.join(splitChar) + splitChar + lastChunk);
  178.                         chunks = null;
  179.                     }
  180.                     //Finished!
  181.                     else {
  182.                         return element.innerHTML;
  183.                     }
  184.                 }
  185.             }
  186.             //No valid chunks produced
  187.             else {
  188.                 //No valid chunks even when splitting by letter, time to move
  189.                 //on to the next node
  190.                 if (splitChar == '') {
  191.                     applyEllipsis(target, '');
  192.                     target = getLastChild(element);
  193.                     reset();
  194.                 }
  195.             }
  196.             //If you get here it means still too big, let's keep truncating
  197.             if (opt.animate) {
  198.                 setTimeout(function () {
  199.                     truncate(target, maxHeight);
  200.                 }, opt.animate === true ? 10 : opt.animate);
  201.             }
  202.             else {
  203.                 return truncate(target, maxHeight);
  204.             }
  205.         }
  206.         function applyEllipsis(elem, str) {
  207.             elem.nodeValue = str + opt.truncationChar;
  208.         }
  209.         // CONSTRUCTOR
  210.         if (clampValue == 'auto') {
  211.             clampValue = getMaxLines();
  212.         }
  213.         else if (isCSSValue) {
  214.             clampValue = getMaxLines(parseInt(clampValue));
  215.         }
  216.         var clampedText;
  217.         if (supportsNativeClamp && opt.useNativeClamp) {
  218.             sty.overflow = 'hidden';
  219.             sty.textOverflow = 'ellipsis';
  220.             sty.webkitBoxOrient = 'vertical';
  221.             sty.display = '-webkit-box';
  222.             sty.webkitLineClamp = clampValue;
  223.             if (isCSSValue) {
  224.                 sty.height = opt.clamp + 'px';
  225.             }
  226.         }
  227.         else {
  228.             var height = getMaxHeight(clampValue);
  229.             if (height <= element.clientHeight) {
  230.                 clampedText = truncate(getLastChild(element), height);
  231.             }
  232.         }
  233.         return {
  234.             'original': originalText,
  235.             'clamped': clampedText
  236.         };
  237.     }
  238.     window.$clamp = clamp;
  239. })();
  240. (function () {
  241.     // Begin script: Youtube Peek
  242.     'use strict';
  243.     const DEFAULT_OPTIONS = {
  244.         regions: [],
  245.         noTooltip: true,
  246.         allowOnYoutube: false
  247.     };
  248.     const OPTIONS = JSON.parse(GM_getValue('userSettings', JSON.stringify(DEFAULT_OPTIONS)));
  249.     const apiKey = 'AIzaSyBnibVlVDGC7t_wd3ZErVK6XF3hp3G7xtA';
  250.     const re = {
  251.         isVideoLink: /(?:youtube\.com\/(?:watch\?.*v=|attribution_link)|youtu\.be\/|y2u\.be\/)/i,
  252.         getVideoId: /(?:youtube\.com\/watch\?.*v=|youtu\.be\/|y2u\.be\/)([-_A-Za-z0-9]{11})/i,
  253.         getTimeLength: /\d+[A-Z]/g,
  254.     };
  255.     const cache = {};
  256.     const delay_open = 100;
  257.     const delay_close = 0;
  258.     let tmo_open;
  259.     let tmo_close;
  260.     const _stylesheet = String.raw `<style type="text/css" id="yt-peek">.yt-peek,.yt-peek-loading{position:absolute;z-index:123456789}.yt-peek,.yt-peek-cfg{box-shadow:var(--shadow-big);--shadow-big:0 4px 8px hsla(0,0%,0%,.2),0 8px 16px hsla(0,0%,0%,.2),0 4px 4px hsla(0,0%,100%,.1)}.yt-peek-loading{width:16px;height:16px;border-radius:50%;background:#fff;border-width:6px 0;border-style:solid;border-color:#8aa4b1;box-sizing:border-box;animation-duration:1s;animation-name:spin;animation-iteration-count:infinite;animation-timing-function:cubic-bezier(.67,.88,.53,.37)}.yt-peek .yt-peek-loading{top:0;bottom:0;left:0;right:0;margin:auto;background:0 0;border-color:hsla(200,20%,62%,.5);width:32px;height:32px}.yt-peek .yt-peek-chan,.yt-peek-blocked{border-top:1px solid hsla(0,0%,100%,.1);box-sizing:border-box}@keyframes spin{from{transform:rotate(0)}to{transform:rotate(360deg)}}.yt-peek{box-sizing:border-box;background:#232628;margin:0;padding:0;color:#999!important;font:400 12px/1.2 "segoe ui",arial,sans-serif!important;border-radius:3px!important;overflow:hidden}.yt-peek-cols{display:flex;flex-direction:row;position:relative}.yt-peek-cols>div{display:flex;flex:1 1 auto}.yt-peek-info{box-sizing:border-box;max-width:230px;display:flex;flex:1 0 auto;flex-direction:column}.yt-peek-row{display:flex;justify-content:space-between}.yt-peek-info>div{padding:6px 12px}.yt-peek .yt-peek-title{font-size:14px;color:#fff}.yt-peek .yt-peek-desc{padding-top:0;font-size:14px}.yt-peek .yt-peek-date{display:inline-block;order:-1}.yt-peek .yt-peek-views{display:inline-block}.yt-peek .yt-peek-chan{color:#fff;position:absolute;bottom:0;width:100%}.yt-peek-preview{position:relative;flex-direction:column;order:-1;justify-content:space-between}.yt-peek-thumb{position:relative;min-height:169px;width:300px}.yt-peek-thumb img{object-fit:none;display:block;width:100%}.yt-peek-length{font:700 12px/1 arial,sans-serif;position:absolute;bottom:8px;left:4px;padding:2px 5px;color:#fff;background:hsla(0,0%,0%,.9);border-radius:3px}.yt-peek-score{margin:1px 0;width:100%;height:3px;background:#ccc}.yt-peek-score div{height:inherit;background:#0098e5}.yt-peek-blocked{padding:5px 12px;color:#b2b2b2;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;max-width:530px}.yt-peek-blocked em{font-weight:700;font-style:normal;color:#fff;padding:0 2px;background:#dc143c;border-radius:2px}.yt-peek-cfg{font:400 12px/1.35 sans-serif;position:fixed;top:0;right:15px;left:0;margin:auto;padding:0 15px;width:300px;box-sizing:border-box;color:#000;background:#fff;border-radius:0 0 3px 3px;border-width:0 1px 1px;border-style:solid;border-color:#999;max-height:100vh;overflow:auto;z-index:12345679}.yt-peek-cfg-footer,.yt-peek-cfg-item{padding:10px 0}.yt-peek-cfg-heading{padding:10px 0;font:400 14px/1 sans-serif}.yt-peek-cfg-label{font-weight:700}.yt-peek-cfg-item label{display:block}.yt-peek-cfg-desc{color:#8c8c8c;margin:.25em 0 0}.yt-peek-cfg-item textarea{box-sizing:border-box;min-width:100px;width:100%;min-height:2em}.yt-peek-cfg button{display:inline-block;font:400 12px/1 sans-serif;border:none;border-radius:3px;margin:0 .5em 0 0;padding:10px 18px;transition:background .2s;cursor:default}.yt-peek-cfg-save{color:#fff;background:#d82626}.yt-peek-cfg-cancel{color:#000;background:0 0}.yt-peek-cfg-save:hover{background:#b71414}.yt-peek-cfg-cancel:hover{background:#e5e5e5}.yt-peek-missing .yt-peek-chan,.yt-peek-missing .yt-peek-row,.yt-peek-missing .yt-peek-thumb{display:none}.yt-peek,.yt-peek-loading,.yt-peek-thumb img{opacity:0;transition:opacity .25s}.yt-peek-ready{opacity:1!important}</style>`;
  261.     document.body.insertAdjacentHTML('beforeend', _stylesheet);
  262.     function containsEncodedComponents(x) {
  263.         return (decodeURI(x) !== decodeURIComponent(x));
  264.     }
  265.     /**
  266.      * Check if we're on a particular domain name.
  267.      * @param host Name of the website.
  268.      */
  269.     function site(host) {
  270.         return window.location.host.includes(host);
  271.     }
  272.     function handleMouseOver(ev) {
  273.         let target = ev.target;
  274.         target = target.closest('a');
  275.         if (!target)
  276.             return;
  277.         let href = target.href;
  278.         if (!href)
  279.             return;
  280.         // Some sites put the URL in a dataset. (note: twitter blocks goog API)
  281.         if (site('twitter.com')) {
  282.             const dataUrl = target.dataset.expandedUrl;
  283.             if (dataUrl)
  284.                 href = dataUrl;
  285.         }
  286.         // Check if the URL goes to a youtube video.
  287.         if (!re.isVideoLink.test(href))
  288.             return;
  289.         // Need to know if it's an attribution link so we can read the encoded params.
  290.         if (/attribution_link\?/i.test(href)) {
  291.             const URIComponent = href.substr(href.indexOf('%2Fwatch%3Fv%3D'));
  292.             if (containsEncodedComponents(URIComponent)) {
  293.                 href = 'https://www.youtube.com' + decodeURIComponent(URIComponent);
  294.             }
  295.         }
  296.         // Finally get the video ID;
  297.         const id = re.getVideoId.exec(href)[1];
  298.         if (!id)
  299.             return console.error('Invalid video ID');
  300.         window.clearTimeout(tmo_open);
  301.         window.clearTimeout(tmo_close);
  302.         const noTooltip = JSON.parse(GM_getValue('userSettings', JSON.stringify(DEFAULT_OPTIONS))).noTooltip;
  303.         if (noTooltip) {
  304.             target.removeAttribute('title');
  305.         }
  306.         tmo_open = window.setTimeout(() => {
  307.             if (!cache.hasOwnProperty(id)) {
  308.                 const parts = 'snippet,contentDetails,statistics';
  309.                 requestVideoData(ev, id, parts);
  310.             }
  311.             else {
  312.                 handleSuccess(ev, id, cache[id]);
  313.             }
  314.         }, delay_open);
  315.         function handleMouseLeave(ev) {
  316.             target.removeEventListener('mouseleave', handleMouseLeave);
  317.             window.clearTimeout(tmo_open);
  318.             tmo_open = null;
  319.             tmo_close = window.setTimeout(() => {
  320.                 removePeekBoxes();
  321.             }, delay_close);
  322.         }
  323.         target.addEventListener('mouseleave', handleMouseLeave);
  324.     }
  325.     function loadImage(path) {
  326.         return new Promise(resolve => {
  327.             const img = new Image();
  328.             img.onload = ev => resolve(img);
  329.             img.onerror = ev => resolve(undefined);
  330.             img.src = path || '';
  331.         });
  332.     }
  333.     function getScorePercent(lovers, haters) {
  334.         if (isNaN(lovers) || isNaN(haters))
  335.             return undefined;
  336.         return Math.round(100 * lovers / (lovers + haters));
  337.     }
  338.     function toDigitalTime(str) {
  339.         if (!str)
  340.             return undefined;
  341.         function pad(s) {
  342.             return s.length < 2 ? `0${s}` : s;
  343.         }
  344.         const hours = /(\d+)H/.exec(str);
  345.         const mins = /(\d+)M/.exec(str);
  346.         const secs = /(\d+)S/.exec(str);
  347.         const output = [];
  348.         if (hours)
  349.             output.push(pad(hours[1]));
  350.         output.push(mins ? pad(mins[1]) : '00');
  351.         output.push(secs ? pad(secs[1]) : '00');
  352.         return output.join(':');
  353.     }
  354.     function insertPeekBox(ev, d) {
  355.         const a = ev.target;
  356.         const settings = JSON.parse(GM_getValue('userSettings', JSON.stringify(DEFAULT_OPTIONS)));
  357.         // Tokens:
  358.         const title = d.snippet.localized.title;
  359.         const desc = d.snippet.localized.description;
  360.         const date = dateAsAge(d.snippet.publishedAt);
  361.         const chan = d.snippet.channelTitle;
  362.         const thumbs = d.snippet.thumbnails;
  363.         const imagePath = thumbs.hasOwnProperty('medium') ? thumbs.medium.url : undefined;
  364.         let blockMatched = [];
  365.         let blockOther = [];
  366.         if (settings.regions.length && d.contentDetails.hasOwnProperty('regionRestriction')) {
  367.             const blocked = d.contentDetails.regionRestriction.blocked;
  368.             if (blocked) {
  369.                 blockMatched = blocked.filter(v => settings.regions.includes(v)).map(v => `<em>${v}</em>`);
  370.                 blockOther = blocked.filter(v => !settings.regions.includes(v));
  371.             }
  372.         }
  373.         const viewCount = +d.statistics.viewCount;
  374.         const views = viewCount ? viewCount.toLocaleString() : undefined;
  375.         const score = getScorePercent(+d.statistics.likeCount, +d.statistics.dislikeCount);
  376.         const length = toDigitalTime(d.contentDetails.duration);
  377.         loadImage(imagePath).then(img => {
  378.             finishedLoading();
  379.             if (!img)
  380.                 return;
  381.             img.setAttribute('alt', title);
  382.             container.querySelector('.yt-peek-thumb').appendChild(img);
  383.             window.setTimeout(() => {
  384.                 img.classList.add('yt-peek-ready');
  385.             }, 70);
  386.         });
  387.         // Create HTML:
  388.         const container = document.createElement('div');
  389.         container.innerHTML = `
  390.     <div class="yt-peek-cols">
  391.       <div class="yt-peek-info">
  392.         <div class="yt-peek-row">
  393.           <div class="yt-peek-views">${views ? views + ' views' : ''}</div>
  394.           <div class="yt-peek-date">${date ? date : ''}</div>
  395.         </div>
  396.         <div class="yt-peek-title">${title ? title : `Not found`}</div>
  397.         <div class="yt-peek-desc">${desc ? desc : ''}</div>
  398.         <div class="yt-peek-chan">${chan ? chan : ''}</div>
  399.       </div>
  400.       <div class="yt-peek-preview">
  401.         <div class="yt-peek-thumb"></div>
  402.         <div class="yt-peek-loading yt-peek-ready"></div>
  403.         ${length ? `<div class="yt-peek-length">${length}</div>` : ``}
  404.         ${score ? `<div class="yt-peek-score"><div style="width: ${score}%;"></div></div>` : ``}
  405.       </div>
  406.     </div>
  407.     ${blockMatched.length ? `<div class="yt-peek-blocked"><span>Blocked in:</span> ${blockMatched.join(' ')} ${blockOther.join(' ')}</div>` : ``}
  408.     `;
  409.         container.classList.add('yt-peek');
  410.         if (!title) {
  411.             container.classList.add('yt-peek-missing');
  412.         }
  413.         document.body.insertAdjacentElement('beforeend', container);
  414.         // Clamp long lines of text:
  415.         const $title = container.querySelector('.yt-peek-title');
  416.         const $description = container.querySelector('.yt-peek-desc');
  417.         $clamp($title, { clamp: 4, useNativeClamp: false });
  418.         $clamp($description, { clamp: 4, useNativeClamp: false });
  419.         // Find optimal position within viewport:
  420.         setPosition(a, container);
  421.         // Allow for smooth CSS transition:
  422.         window.setTimeout(() => {
  423.             container.classList.add('yt-peek-ready');
  424.         }, 0);
  425.         // Event listener to remove container because it shouldn't be interacted with:
  426.         container.addEventListener('mouseenter', ev => {
  427.             removePeekBoxes();
  428.         });
  429.     }
  430.     function removePeekBoxes() {
  431.         const elements = document.getElementsByClassName('yt-peek');
  432.         for (const element of elements) {
  433.             element.classList.remove('yt-peek-ready');
  434.             // Allow for smooth CSS transition:
  435.             window.setTimeout(() => {
  436.                 element.remove();
  437.             }, 250);
  438.         }
  439.     }
  440.     // Utility to check if a peek box is currently open in the document.
  441.     function activePeekBox() {
  442.         const elements = document.getElementsByClassName('yt-peek');
  443.         if (elements.length)
  444.             return elements[0];
  445.     }
  446.     function startedLoading(ev) {
  447.         const indicator = document.createElement('div');
  448.         indicator.classList.add('yt-peek-loading', 'yt-peek-ready');
  449.         document.body.insertAdjacentElement('beforeend', indicator);
  450.         setPosition(ev.target, indicator);
  451.     }
  452.     function finishedLoading() {
  453.         const elements = document.getElementsByClassName('yt-peek-loading');
  454.         for (const element of elements) {
  455.             element.classList.remove('yt-peek-ready');
  456.             window.setTimeout(() => {
  457.                 element.remove();
  458.             }, 250);
  459.         }
  460.     }
  461.     function handleSuccess(ev, id, d) {
  462.         removePeekBoxes();
  463.         if (!d) {
  464.             d = {};
  465.             d.id = id;
  466.             d.contentDetails = {
  467.                 duration: undefined
  468.             };
  469.             d.snippet = {
  470.                 channelTitle: '',
  471.                 thumbnails: { medium: { url: undefined } },
  472.                 localized: {
  473.                     title: undefined,
  474.                     description: `The video might be removed.`
  475.                 },
  476.                 publishedAt: undefined
  477.             };
  478.             d.statistics = {};
  479.         }
  480.         insertPeekBox(ev, d);
  481.         if (!cache.hasOwnProperty(id))
  482.             cache[id] = d;
  483.     }
  484.     function requestVideoData(ev, id, parts) {
  485.         startedLoading(ev);
  486.         const xhr = new XMLHttpRequest();
  487.         xhr.open('GET', `https://www.googleapis.com/youtube/v3/videos?id=${id}&part=${parts}&key=${apiKey}`);
  488.         xhr.onreadystatechange = function () {
  489.             if (xhr.readyState === 4) {
  490.                 finishedLoading();
  491.                 if (!tmo_open)
  492.                     return;
  493.                 if (!xhr.responseText.length)
  494.                     return;
  495.                 const response = JSON.parse(xhr.responseText);
  496.                 if (xhr.status === 200) {
  497.                     handleSuccess(ev, id, response.items[0]);
  498.                 }
  499.                 else {
  500.                     // handleError()
  501.                 }
  502.             }
  503.             else {
  504.                 finishedLoading();
  505.             }
  506.         };
  507.         xhr.send();
  508.     }
  509.     function dateAsAge(inputValue) {
  510.         if (!inputValue)
  511.             return undefined;
  512.         let date = new Date(inputValue);
  513.         const difference = new Date(new Date().valueOf() - date.valueOf());
  514.         let y = parseInt(difference.toISOString().slice(0, 4), 10) - 1970;
  515.         let m = +difference.getMonth();
  516.         let d = difference.getDate() - 1;
  517.         let result;
  518.         if (y > 0)
  519.             result = (y === 1) ? y + ' year ago' : y + ' years ago';
  520.         else if (m > 0)
  521.             result = (m === 1) ? m + ' month ago' : m + ' months ago';
  522.         else if (d > 0) {
  523.             result = (d === 1) ? d + ' day ago' : d + ' days ago';
  524.         }
  525.         else {
  526.             result = 'Today';
  527.         }
  528.         return result;
  529.     }
  530.     /**
  531.      *
  532.      * @param source Element to use for the relative position.
  533.      * @param element The element to position.
  534.      */
  535.     function setPosition(source, element) {
  536.         const srcRect = source.getBoundingClientRect();
  537.         const clearanceHeight = element.clientHeight < 60 ? 60 : element.clientHeight;
  538.         // Viewport dimensions:
  539.         const vw = document.documentElement.clientWidth;
  540.         const vh = document.documentElement.clientHeight;
  541.         // Calculate:
  542.         const leftOfTarget = vw < (srcRect.left + element.clientWidth);
  543.         // Add extra space for browser status tooltip.
  544.         const topOfTarget = vh < (srcRect.top + srcRect.height + clearanceHeight + 24);
  545.         // Apply position:
  546.         if (leftOfTarget) {
  547.             element.style.right = vw - srcRect.right + 'px';
  548.         }
  549.         else {
  550.             element.style.left = srcRect.left + 'px';
  551.         }
  552.         if (topOfTarget && (vh / 2 < srcRect.top)) {
  553.             element.style.bottom = (vh - srcRect.top) - window.scrollY + 'px';
  554.         }
  555.         else {
  556.             element.style.top = srcRect.bottom + window.scrollY + 'px';
  557.         }
  558.     }
  559.     function insertSettingsDialog() {
  560.         if (document.querySelector('.yt-peek-cfg'))
  561.             return closeSettingsDialog();
  562.         const data = JSON.parse(GM_getValue('userSettings', JSON.stringify(DEFAULT_OPTIONS)));
  563.         const container = document.createElement('div');
  564.         container.addEventListener('click', handleSettingsClick);
  565.         container.classList.add('yt-peek-cfg');
  566.         container.innerHTML = `
  567.       <div class="yt-peek-cfg-heading">Youtube Peek</div>
  568.       <div class="yt-peek-cfg-item">
  569.         <label class="yt-peek-cfg-label" for="yt-peek-cfg-regions">Warn me if the video is blocked in:</label>
  570.         <textarea id="yt-peek-cfg-regions">${data.regions.join(' ')}</textarea>
  571.         <div class="yt-peek-cfg-desc">Space-separated list of region codes. E.g. US GB CA. Leave blank to ignore.</div>
  572.       </div>
  573.       <div class="yt-peek-cfg-item">
  574.         <label>
  575.           <input type="checkbox" id="yt-peek-cfg-noTooltip"${data.noTooltip ? ` checked` : ``}>
  576.           Remove tooltips from video links
  577.         </label>
  578.         <div class="yt-peek-cfg-desc">Because tooltips can get in the way of the video preview.</div>
  579.       </div>
  580.       <div class="yt-peek-cfg-item">
  581.         <label>
  582.           <input type="checkbox" id="yt-peek-cfg-youtube"${data.allowOnYoutube ? ` checked` : ``}>
  583.           Enable on youtube.com
  584.         </label>
  585.         <div class="yt-peek-cfg-desc">Peek isn't intended for use on youtube.com, but you can still use it there. (this change takes effect after reloading)</div>
  586.       </div>
  587.       <div class="yt-peek-cfg-footer">
  588.         <button class="yt-peek-cfg-save" id="yt-peek-cfg-save">SAVE</button>
  589.         <button class="yt-peek-cfg-cancel" id="yt-peek-cfg-cancel">CANCEL</button>
  590.       </div>
  591.     `;
  592.         document.body.appendChild(container);
  593.     }
  594.     function handleSaveSettings() {
  595.         const dialog = document.querySelector('.yt-peek-cfg');
  596.         if (!dialog)
  597.             return;
  598.         // Retrieve values:
  599.         const regionsInput = document.getElementById('yt-peek-cfg-regions');
  600.         const noTooltipInput = document.getElementById('yt-peek-cfg-noTooltip');
  601.         const allowOnYoutube = document.getElementById('yt-peek-cfg-youtube');
  602.         // Format values:
  603.         let regions = regionsInput.value.trim().replace(/\s\s+/g, ' ').toUpperCase();
  604.         // Prepare data object for storage:
  605.         const db_entry = {
  606.             regions: regions.split(/\s/),
  607.             noTooltip: noTooltipInput.checked,
  608.             allowOnYoutube: allowOnYoutube.checked
  609.         };
  610.         GM_setValue('userSettings', JSON.stringify(db_entry));
  611.         closeSettingsDialog();
  612.     }
  613.     function handleSettingsClick(ev) {
  614.         if (ev.target.id === 'yt-peek-cfg-cancel') {
  615.             closeSettingsDialog();
  616.         }
  617.         if (ev.target.id === 'yt-peek-cfg-save') {
  618.             handleSaveSettings();
  619.         }
  620.     }
  621.     function closeSettingsDialog() {
  622.         const dialog = document.querySelector('.yt-peek-cfg');
  623.         if (dialog)
  624.             dialog.remove();
  625.     }
  626.     function handleMenuCommand() {
  627.         insertSettingsDialog();
  628.     }
  629.     GM_registerMenuCommand('Youtube Peek Settings', handleMenuCommand);
  630.     if (site('youtube.com') && !OPTIONS.allowOnYoutube)
  631.         return;
  632.     document.addEventListener('mouseover', handleMouseOver);
  633. })();