IMDB works#

Shows number of credited works after names on IMDB site

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==//
// @name           IMDB works#
// @description    Shows number of credited works after names on IMDB site
// @match          *://*.imdb.com/*
// @version        1.0.7
// @author         wOxxOm
// @namespace      wOxxOm.scripts
// @license        MIT License
// @grant          GM_addStyle
// @run-at         document-start
// @require        https://greatest.deepsurf.us/scripts/12228/code/setMutationHandler.js
// ==/UserScript==

var SELECTOR = 'a[href^="/name/nm"]';
var CACHE_FRESH_DURATION = 30 * 24 * 3600 * 1000; // 1 month
var CACHE_STALE_DURATION = CACHE_FRESH_DURATION * 2; // keep stale data another 2 months, then kill

GM_addStyle(
	'.number-of-works, .number-of-works span { opacity: 0.5; transition: opacity .25s ease-in-out .25s; }' +
	'.number-of-works span:before { content: "/"; }' +
	'.number-of-works:hover { opacity: 1.0; }' +
	'.number-of-works:hover span { opacity: 1.0; }' +
	'.number-of-works:before { content: " ["; opacity: 0.5; }' +
	'.number-of-works:after { content: "]"; opacity: 0.5; }'
);

process(document.querySelectorAll(SELECTOR));
setMutationHandler(document, SELECTOR, process);

if (location.pathname.match(/\/name\/nm\d+\/?$/)) {
	document.addEventListener('DOMContentLoaded', function() {
		parseNamePage(document, {cacheKey: 'works#' + location.pathname.match(/\/name\/nm(\d+)\/?$/)[1]});
	});
}

function process(links) {
	var now = Date.now();
	for (var link, i = 0; (link = links[i++]); ) {
		if (link.querySelector('img') ||
			!link.textContent.trim() ||
			link.children[0] && link.textContent.trim() != link.children[0].textContent.trim() ||
			link.nextElementSibling && link.nextElementSibling.matches('.number-of-works'))
			continue;
		var id = (link.pathname.match(/\/name\/nm(\d+)\/?$/) || [])[1];
		if (!id)
			continue;
		var cacheKey = 'works#' + id;
		var cache = (localStorage[cacheKey] || '').split('\t');
		if (cache.length == 2 && +cache[0] && cache[1]) {
			showWorksNum(link, cache[1]);
			var isFresh = +cache[0] > now;
			if (isFresh)
				continue;
		}
		doXHR({
			url: link.pathname,
			link: link,
			cacheKey: cacheKey,
			onload: parseNamePage,
		});
	}
}

function showWorksNum(link, num) {
    num = num.toString().replace(/\/(\d+)/, '<span>$1</span>');
	if (link.nextElementSibling && link.nextElementSibling.matches('.number-of-works')) {
		link.nextElementSibling.innerHTML = num;
	} else {
		link.insertAdjacentHTML('afterend', '<span class="number-of-works">' + num + '</span>');
	}
}

function parseNamePage(doc, options) {
	var credits = [].map.call(doc.querySelectorAll('#filmography .head'), function(e) {
		return {
			num: +(e.textContent.match(/\((\d+) credits?\)/i) || [])[1],
			type: (e.querySelector('a[name]') || {name: ''}).name,
		};
	});
	if (!credits.length)
		return;
	var creditsSum = credits.reduce(function(sum, e) { return sum + e.num; }, 0);
	var rxIgnore = /^(self|archive_footage|thanks)$/;
	var creditsSorted = credits.sort(function(a, b) {
		if (rxIgnore.test(a.type))
			return 1;
		else if (rxIgnore.test(b.type))
			return -1;
		else
			return b.num - a.num || (a.type == 'actor' ? -1 : b.type == 'actor' ? 1 : 0);
	});
	var worksNum = rxIgnore.test(creditsSorted[0].type) ? creditsSum : creditsSorted[0].num + (credits.length > 1 ? '/' + creditsSum : '');
	localStorage[options.cacheKey] = '' + (Date.now() + CACHE_FRESH_DURATION) + '\t' + worksNum;
	if (options.link)
		showWorksNum(options.link, worksNum);
}

function doXHR(options) {
	if (document.readyState == 'complete') {
		sendRequest(options);
		return;
	}
	if (!doXHR.queue)
        initQueue();
    if (!isDupe()) {
        doXHR.queue.push(options);
        doXHR.queuedUrl[options.url] = options;
    }

	function sendRequest(options) {
		var xhr = new XMLHttpRequest();
		xhr.open('GET', options.url);
		xhr.responseType = 'document';
		xhr.onload = function(e) {
			options.onload(xhr.response, options);
            doXHR.activeRequests--;
            poolQueue();
		};
        doXHR.activeRequests++;
		xhr.send();
	}

	function initQueue() {
		doXHR.queue = [];
		doXHR.queuedUrl = {};
        doXHR.activeRequests = 0;
		document.addEventListener('DOMContentLoaded', function() {
			cleanupStorage();
            poolQueue();
		});
    }

	function isDupe() {
        var dupe = doXHR.queuedUrl[options.url];
        if (!dupe)
            return false;
        if (dupe.link == options.link)
            return true;
        // this request's link element will use the will-be-cached data from the earlier queued request
        options.url = '';
        var _onload = dupe.onload;
        dupe.onload = function() {
            _onload.apply(null, arguments);
            showWorksNum(options.link, localStorage[options.cacheKey].split('\t')[1]);
        };
        return true;
    }

    function poolQueue() {
        while (doXHR.queue.length && doXHR.activeRequests < 16) {
            sendRequest(doXHR.queue.shift());
        }
    }
}

function cleanupStorage() {
	setTimeout(function doCleanup() {
		var now = Date.now(), i = 0;
		for (var k in localStorage) {
			if (k.lastIndexOf('works#', 0) === 0 && (+localStorage[k].split('\t')[0]) + CACHE_STALE_DURATION < now) {
				delete localStorage[k];
			}
			if (++i % 100 === 0 && Date.now() - now > 10) {
				setTimeout(doCleanup, 1000);
				return;
			}
		}
	}, 1000);
}