VK: Check Online

Checks the last online on page user and in dialog

目前為 2024-05-03 提交的版本,檢視 最新版本

您需要先安裝使用者腳本管理器擴展,如 TampermonkeyGreasemonkeyViolentmonkey 之後才能安裝該腳本。

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

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyUserscripts 後才能安裝該腳本。

你需要先安裝一款使用者腳本管理器擴展,比如 Tampermonkey,才能安裝此腳本

您需要先安裝使用者腳本管理器擴充功能後才能安裝該腳本。

(我已經安裝了使用者腳本管理器,讓我安裝!)

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

(我已經安裝了使用者樣式管理器,讓我安裝!)

// ==UserScript==
// @name            VK: Check Online
// @name:ru         ВК: Проверка онлайна
// @description     Checks the last online on page user and in dialog
// @description:ru  Проверяет последний онлайн пользователя на странице и в диалогe
// @namespace       vk-check-online.user.js
// @license         MIT
// @author          askornot
// @version         1.5.1
// @match           https://vk.com/*
// @connect         vk.com
// @compatible      chrome     Violentmonkey 2.18.0
// @compatible      firefox    Violentmonkey 2.13.3
// @compatible      firefox    Tampermonkey 4.18.1
// @homepageURL     https://greasyfork.org/en/scripts/403717-vk-check-online
// @supportURL      https://greasyfork.org/en/scripts/403717-vk-check-online/feedback
// @run-at          document-start
// @noframes
// ==/UserScript==

(function (W) {
  'use strict';

  const IM_ID = 'payload,1,1,0,id';
  const IM_ONLINE = 'payload,1,0,last_seen';
  const PROFILE_ID = 'response,users.get,0,id';
  const PROFILE_ONLINE = 'response,users.get,0,online_info';

  const IM_INFO = {
    can_see: 1,
    platform: 0,
    time: 0,
    mobile: 0,
  };

  const PROFILE_INFO = {
    visible: true,
    last_seen: 0,
    app_id: 0,
    is_online: false,
    is_mobile: false,
  };

  const last = (arr) => arr[arr.length - 1];

  const match = (s) => /online_info|a_start/.test(s);

  const getByPath = (data, dataPath) => {
    const path = dataPath.split(',');
    let object = data;
    for (const name of path) {
      const next = object[name];
      if (next === null || next === undefined) return next;
      object = next;
    }
    return object;
  };

  const setByPath = (data, dataPath, value) => {
    const path = dataPath.split(',');
    const len = path.length;
    let obj = data;
    let i = 0;
    let next, prop;
    for (;;) {
      if (typeof obj !== 'object') return false;
      prop = path[i];
      if (i === len - 1) {
        obj[prop] = value;
        return true;
      }
      next = obj[prop];
      if (next === undefined || next === null) {
        next = {};
        obj[prop] = next;
      }
      obj = next;
      i++;
    }
  };

  const parse = (text) => {
    const parser = new DOMParser();
    const body = parser.parseFromString(text, 'text/html');
    const [element] = body.getElementsByTagName('ya:lastloggedin');
    if (!element) return 0;
    const date = element.getAttribute('dc:date');
    return Date.parse(date) / 1000;
  };

  const request = (url, callback) => {
    const xhr = new XMLHttpRequest();
    xhr.onreadystatechange = () => {
      if (xhr.readyState === xhr.DONE) {
        if (xhr.status === 0 || xhr.status === 200) {
          callback(xhr.responseText);
        }
      }
    };
    xhr.open('GET', url, true);
    xhr.send();
  };

  const foaf = (id) => `https://vk.com/foaf.php?id=${id}`;

  const profile = (data) => {
    const info = getByPath(data, PROFILE_ONLINE);
    if (info && info.visible === true) return Promise.resolve(data);
    const id = getByPath(data, PROFILE_ID);
    if (id === undefined) return Promise.resolve(data);
    return fetch(foaf(id))
      .then((res) => res.text())
      .then(parse)
      .then((time) => {
        setByPath(data, PROFILE_ONLINE, { ...PROFILE_INFO, last_seen: time });
        return data;
      });
  };

  const im = (data, callback) => {
    const info = getByPath(data, IM_ONLINE);
    if (info && info.can_see === 1) return callback();
    const id = getByPath(data, IM_ID);
    if (id === undefined) return callback();
    request(foaf(id), (text) => {
      const time = parse(text);
      setByPath(data, IM_ONLINE, { ...IM_INFO, time });
      callback();
    });
  };

  const queries = new WeakSet();

  const xhr = W.XMLHttpRequest && W.XMLHttpRequest.prototype;

  const onreadystatechange = (self) => {
    self.onreadystatechange = new Proxy(self.onreadystatechange, {
      apply(...args) {
        if (self.readyState === xhr.DONE) {
          const data = JSON.parse(self.responseText);
          im(data, () => {
            Object.defineProperty(self, 'responseText', {
              value: JSON.stringify(data),
              writable: true,
            });
            return Reflect.apply(...args);
          });
        }
      },
    });
  };

  xhr.open = new Proxy(xhr.open, {
    apply(target, self, argumentsList) {
      const url = argumentsList[1];
      if (match(url)) queries.add(self);
      return Reflect.apply(target, self, argumentsList);
    },
  });

  xhr.send = new Proxy(xhr.send, {
    apply(target, self, argumentsList) {
      if (queries.has(self)) onreadystatechange(self);
      return Reflect.apply(target, self, argumentsList);
    },
  });

  W.fetch = new Proxy(W.fetch, {
    apply(...args) {
      const promise = Reflect.apply(...args);
      const argumentsList = last(args);
      const { body } = last(argumentsList);
      if (!match(body)) return promise;
      return promise
        .then((res) => res.clone())
        .then((res) => res.json())
        .then(profile)
        .then((patched) => new Response(JSON.stringify(patched), promise))
        .catch(() => promise);
    },
  });

  const patch = () => {
    W.extend = new Proxy(W.extend, {
      apply(target, self, argumentsList) {
        const object = argumentsList[0];
        const { apiPrefetchCache } = last(argumentsList);
        if (!apiPrefetchCache) return Reflect.apply(target, self, argumentsList);
        const filtered = apiPrefetchCache.filter(
          ({ method }) => method !== 'users.get',
        );
        return Reflect.apply(target, self, [
          object,
          { apiPrefetchCache: filtered },
        ]);
      },
    });
  };

  new MutationObserver((_, observer) => {
    try {
      patch();
      observer.disconnect();
    } catch {}
  }).observe(document.documentElement, {
    childList: true,
    subtree: true,
  });
})(unsafeWindow || window);