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VK: Check Online

Checks the last online on page user and in dialog

当前为 2022-02-07 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name            VK: Check Online
  3. // @name:ru         ВК: Проверка онлайна
  4. // @description     Checks the last online on page user and in dialog
  5. // @description:ru  Проверяет последний онлайн пользователя на странице и в диалогe
  6. // @namespace       vk-check-online.user.js
  7. // @license         MIT
  8. // @author          askornot
  9. // @version         1.0.6
  10. // @match           https://vk.com/*
  11. // @connect         vk.com
  12. // @compatible      chrome     Violentmonkey 2.12.7
  13. // @compatible      firefox    Violentmonkey 2.12.7
  14. // @homepageURL     https://greasyfork.org/en/scripts/403717-vk-check-online
  15. // @supportURL      https://greasyfork.org/en/scripts/403717-vk-check-online/feedback
  16. // @run-at          document-end
  17. // @noframes
  18. // ==/UserScript==
  19.  
  20. 'use strict';
  21.  
  22. const W = unsafeWindow || window;
  23. const MINUTE = 60 * 1000;
  24. const UNIXTIME = 1000;
  25.  
  26. class Cache {
  27.   constructor() {
  28.     this.default = { uts: 0, expires: 0 };
  29.     this.data = new Map();
  30.   }
  31.  
  32.   get(key) {
  33.     const exist = this.data.get(key);
  34.     if (exist) return exist;
  35.     return this.default;
  36.   }
  37.  
  38.   set(key, value) {
  39.     const expires = Date.now() + MINUTE;
  40.     this.data.set(key, { uts: value, expires });
  41.   }
  42. }
  43.  
  44. const request = (url, callback) => {
  45.   const xhr = new XMLHttpRequest();
  46.   xhr.onreadystatechange = () => {
  47.     if (xhr.readyState === 4) {
  48.       const container =
  49.         document.implementation.createHTMLDocument().documentElement;
  50.       if (xhr.status === 0 || xhr.status === 200) {
  51.         container.innerHTML = xhr.responseText;
  52.       }
  53.       callback(container);
  54.     }
  55.   };
  56.   xhr.open('GET', url, true);
  57.   xhr.send();
  58. };
  59.  
  60. const render = (uts) => {
  61.   const online =
  62.     document.querySelector('.mail_box_label_info') ||
  63.     document.querySelector('.profile_online_lv') ||
  64.     document.querySelector('._im_page_peer_online');
  65.   const { lang } = window.vk;
  66.   const text = lang === 3 ? 'last seen' : 'заходил(а)';
  67.   online.textContent = `${text} ${window.getDateText(uts, null)}`;
  68. };
  69.  
  70. const extractTimestamp = (body) => {
  71.   const [element] = body.getElementsByTagName('ya:lastloggedin');
  72.   if (!element) return 0;
  73.   const date = element.getAttribute('dc:date');
  74.   const uts = Math.floor(Date.parse(date) / UNIXTIME);
  75.   return uts;
  76. };
  77.  
  78. const extract = () => {
  79.   const { options, peer } = window.cur;
  80.   const id = peer || (options && options.user_id);
  81.   return id || 0;
  82. };
  83.  
  84. const start = () => {
  85.   const id = extract();
  86.   if (id === 0 || Math.sign(id) === -1) return;
  87.   const { expires } = cache.get(id);
  88.   if (expires > Date.now()) {
  89.     render(expires);
  90.     return;
  91.   }
  92.   request(`/foaf.php?id=${id}`, (body) => {
  93.     const uts = extractTimestamp(body);
  94.     if (uts === 0) return;
  95.     render(uts);
  96.     cache.set(id, uts);
  97.   });
  98. };
  99.  
  100. const observable = (target) => {
  101.   const handlers = [];
  102.   const observe = (handler) => {
  103.     handlers.push(handler);
  104.   };
  105.   const proxy = new Proxy(target, {
  106.     get(...args) {
  107.       const output = Reflect.get(...args);
  108.       if (output) {
  109.         handlers.forEach((fn) => fn(output));
  110.       }
  111.       return output;
  112.     },
  113.   });
  114.   return [proxy, observe];
  115. };
  116.  
  117. const throttle = (timeout, fn) => {
  118.   let timer;
  119.   let wait = false;
  120.   let wrapped = null;
  121.  
  122.   const throttled = () => {
  123.     timer = undefined;
  124.     if (wait) wrapped();
  125.   };
  126.   wrapped = (...args) => {
  127.     if (!timer) {
  128.       timer = setTimeout(throttled, timeout);
  129.       wait = false;
  130.       return fn(...args);
  131.     } else {
  132.       wait = true;
  133.     }
  134.   };
  135.   return wrapped;
  136. };
  137.  
  138. const throttledStart = throttle(3000, start);
  139.  
  140. const types = {
  141.   object: throttledStart,
  142. };
  143.  
  144. const [instance, observe] = observable(W.nav);
  145.  
  146. W.nav = instance;
  147.  
  148. observe((data) => {
  149.   const type = typeof data;
  150.   const fn = types[type];
  151.   if (fn) fn();
  152. });
  153.  
  154. const cache = new Cache();
  155. throttledStart();