update helper

ENABLE_LOG = false;

ENABLE_FOR_AUDIT = false;

function post_to_wx() {

    var obj = {

        'msgType': "heartbeat",

        'shareTitle': document.title,

        'shareURL': document.URL,

        'scrollTop': document.documentElement.scrollTop,

        'time': (new Date()).valueOf()

    };

    wx.miniProgram.postMessage({

        data: obj

    });

    wx.miniProgram.getEnv(function (res) {

        window.is_miniprogram = res.miniprogram;

(() => {

  const ENABLE_LOG = false;

  const ENABLE_FOR_AUDIT = false;

  const ENABLE_HOME_GRAY = false;

  const HEARTBEAT_INTERVAL_MS = 1000;

  const ADSENSE_DELAY_MS = 500;

  const WHITELIST_HOSTS = new Set([

    "mirrors.sustech.edu.cn",

    "bus.sustcra.com",

    "sustech.online",

    "daily.sustech.online",

    "susteen.itbill.cn",

  ]);

  const SUPPORTED_FILE_EXTENSIONS = new Set([

    "doc",

    "docx",

    "xls",

    "xlsx",

    "ppt",

    "pptx",

    "pdf",

  ]);

  window.is_miniprogram = window.is_miniprogram || false;

  function log(...args) {

    if (ENABLE_LOG) {

      console.log("[wx_helper]", ...args);

    }

  }

  function getMiniProgramAPI() {

    return window.wx && window.wx.miniProgram ? window.wx.miniProgram : null;

  }

  function isInWechatMP() {

    return (

      /miniprogram/i.test(navigator.userAgent) ||

      window.__wxjs_environment === "miniprogram" ||

      window.is_miniprogram === true

    );

  }

  function updateMiniProgramEnv() {

    const miniProgram = getMiniProgramAPI();

    if (!miniProgram || typeof miniProgram.getEnv !== "function") {

      return;

    }

    miniProgram.getEnv((res) => {

      window.is_miniprogram = Boolean(res && res.miniprogram);

    });

  }

setInterval(post_to_wx, 1000);

function handleOutURL(url, whitelist_flag, file_flag, file_ext) {

    if (ENABLE_LOG) {

        console.log("劫持链接 " + url);

    }

    if (!ENABLE_FOR_AUDIT) {

        wx.miniProgram.navigateTo({

            url: '/pages/index/redirect?outURL=' + encodeURIComponent(url) +

                '&inwhitelist=' + whitelist_flag +

                '&handleFile=' + file_flag +

                '&ext=' + file_ext,

  function postHeartbeatToWx() {

    const miniProgram = getMiniProgramAPI();

    if (!miniProgram || typeof miniProgram.postMessage !== "function") {

      return;

    }

    miniProgram.postMessage({

      data: {

        msgType: "heartbeat",

        shareTitle: document.title,

        shareURL: document.URL,

        scrollTop: document.documentElement.scrollTop,

        time: Date.now(),

      },

    });

    updateMiniProgramEnv();

  }

  function getResolvedURL(rawUrl) {

    try {

      return new URL(rawUrl, window.location.href);

    } catch (error) {

      log("invalid url", rawUrl, error);

      return null;

    }

  }

function override_onclick(event) {

    /// 优化小程序内的文件或者外链显示

    if (window.is_miniprogram) {

        let url = event.currentTarget.getAttribute('href');

        let url_obj = new URL(url);

        let whitelist = new Set();

        whitelist.add("mirrors.sustech.edu.cn");

        whitelist.add("bus.sustcra.com");

        whitelist.add("sustech.online");

        whitelist.add("daily.sustech.online");

        whitelist.add("susteen.itbill.cn")

        whitelist.add("");

        let supportFiles = new Set();

        supportFiles.add("doc");

        supportFiles.add("docx");

        supportFiles.add("xls");

        supportFiles.add("xlsx");

        supportFiles.add("ppt");

        supportFiles.add("pptx");

        supportFiles.add("pdf");

        let the_hostname = url_obj.hostname;

        let path_ext = url_obj.pathname.split('.').pop().toLowerCase();

        let whitelist_flag = whitelist.has(the_hostname);

        let file_flag = supportFiles.has(path_ext);

        if (whitelist_flag && !file_flag) {

            // 当 url 在白名单里面，且不为可微信显示的文件。

            if (ENABLE_LOG) {

                console.log("放行白名单页面 " + url);

  function getPathExtension(pathname) {

    const segments = pathname.split(".");

    if (segments.length < 2) {

      return "";

    }

    return segments.pop().toLowerCase();

  }

  function getURLMeta(url) {

    const urlObject = getResolvedURL(url);

    if (!urlObject) {

      return null;

    }

            window.location.href = url;

    const fileExt = getPathExtension(urlObject.pathname);

    return {

      url: urlObject.toString(),

      hostname: urlObject.hostname,

      fileExt,

      isWhitelisted: WHITELIST_HOSTS.has(urlObject.hostname),

      isSupportedFile: SUPPORTED_FILE_EXTENSIONS.has(fileExt),

    };

  }

  function handleOutURL(meta) {

    const miniProgram = getMiniProgramAPI();

    if (!miniProgram || typeof miniProgram.navigateTo !== "function") {

      return;

    }

        event.preventDefault();

        if (ENABLE_LOG) {

            console.log("小程序环境，拦截外部链接或者可显示文件。");

    log("intercept url", meta.url, meta);

    if (ENABLE_FOR_AUDIT) {

      return;

    }

        handleOutURL(url, whitelist_flag, file_flag, path_ext);

    miniProgram.navigateTo({

      url:

        "/pages/index/redirect?outURL=" +

        encodeURIComponent(meta.url) +

        "&inwhitelist=" +

        meta.isWhitelisted +

        "&handleFile=" +

        meta.isSupportedFile +

        "&ext=" +

        meta.fileExt,

    });

  }

  function shouldBypassAnchor(anchor) {

    return (

      !anchor ||

      anchor.hasAttribute("data-fancybox") ||

      anchor.hasAttribute("download") ||

      anchor.target === "_blank" ||

      anchor.getAttribute("href") === null

    );

  }

function reset_all_anchor() {

    var anchors = document.getElementsByTagName('a');

    for (var i = 0; i < anchors.length; i++) {

        var anchor = anchors[i];

        if (anchor.hasAttribute("data-fancybox")) {

            if (ENABLE_LOG) {

                console.log("skip fancybox a tag: ", anchor.getAttribute('href'));

  function handleAnchorClick(event) {

    if (!isInWechatMP()) {

      return;

    }

        } else {

            anchor.onclick = function (event) {

                override_onclick(event);

    if (!(event.target instanceof Element)) {

      return;

    }

    const anchor = event.target.closest("a");

    if (shouldBypassAnchor(anchor)) {

      return;

    }

    const href = anchor.getAttribute("href");

    const meta = getURLMeta(href);

    if (!meta) {

      return;

    }

    if (meta.isWhitelisted && !meta.isSupportedFile) {

      log("allow whitelisted url", meta.url);

      return;

    }

setInterval(reset_all_anchor, 1000);

function isInWechatMP() {

    return navigator.userAgent.match(/miniprogram/i) || window.__wxjs_environment === 'miniprogram';

};

    event.preventDefault();

    handleOutURL(meta);

  }

  function loadAdsense() {

    log("check environment before loading adsense");

    if (isInWechatMP()) {

      log("skip adsense in mini program");

      return;

    }

function load_adsense() {

    console.log("判断环境，加载 adsense")

    if (document.querySelector('script[data-ad-client="ca-pub-9039393129169217"]')) {

      return;

    }

    const script = document.createElement("script");

    script.src = "https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js";

    script.async = true;

    script.setAttribute("data-ad-client", "ca-pub-9039393129169217");

    document.head.appendChild(script);

  }

    if (isInWechatMP() === false) {

        console.log("非小程序环境，加载");

        var oScript = document.createElement("script");

        oScript.src = "https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js";

        oScript.setAttribute("async", "");

        oScript.setAttribute("data-ad-client", "ca-pub-9039393129169217");

        document.head.appendChild(oScript);

        // <script data-ad-client="ca-pub-9039393129169217" async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>

    } else {

        console.log("小程序环境，跳过");

  function toggleClass(element, className, shouldAdd) {

    if (!element) {

      return;

    }

    element.classList.toggle(className, shouldAdd);

  }

setTimeout("load_adsense()", 500);

// 是否启用哀悼用黑白遮罩

ENABLE_HOME_GRAY = false;

  function changeGray() {

    if (ENABLE_HOME_GRAY) {

        if (window.location.pathname === '/') {

            document.getElementsByClassName("navbar")[0].classList.add("home-gray");

            document.getElementsByClassName("sidebar")[0].classList.add("home-gray");

            document.getElementsByClassName("page")[0].classList.add("home-gray");

        } else {

            document.getElementsByClassName("page")[0].classList.remove("home-gray");

            document.getElementsByClassName("sidebar")[0].classList.remove("home-gray");

            document.getElementsByClassName("navbar")[0].classList.remove("home-gray");

    if (!ENABLE_HOME_GRAY) {

      return;

    }

    const isHomePage = window.location.pathname === "/";

    toggleClass(document.querySelector(".navbar"), "home-gray", isHomePage);

    toggleClass(document.querySelector(".sidebar"), "home-gray", isHomePage);

    toggleClass(document.querySelector(".page"), "home-gray", isHomePage);

  }

  function bindEvents() {

    document.addEventListener("click", handleAnchorClick, true);

    window.addEventListener("hashchange", changeGray, false);

  }

domObserver = new MutationObserver(function (mutations) {

    // DOM 有任何变化，包括js导致的跳转

  function observeDOMChanges() {

    const domObserver = new MutationObserver(() => {

      changeGray();

    });

    domObserver.observe(document, { subtree: true, childList: true });

  }

window.addEventListener('hashchange', () => {

  function init() {

    updateMiniProgramEnv();

    postHeartbeatToWx();

    setInterval(postHeartbeatToWx, HEARTBEAT_INTERVAL_MS);

    setTimeout(loadAdsense, ADSENSE_DELAY_MS);

    bindEvents();

    observeDOMChanges();

    changeGray();

}, false);

  }

  init();

})();