Using Cloudflare Workers to Deploy A Free Google Drive Directory Indexer in 5 Minutes

GoIndex is a Google Drive directory indexing program deployed on Cloudflare Workers . It does not need to provide a server. It can directly list all the files on your Google Drive . Here is how it looks like:

The program is developed at Github address: https://github.com/donwa/goindex

This rapid deployment method is developed by Github user Donwa in his goindex project. Here are summarized steps I followed to get it  working.

Table of Contents

Generate Workers Code

1 Generate Cloudflare Workers Code :
1.1 Get Google Auth Code

First visit: https://installen.gd.workers.dev/ , click GET AUTH CODE , verify your Google account to get Auth code

1.2 Get Google Drive Folder ID

By visiting the google drive folder, you will find the url from browser such as “https://drive.google.com/drive/u/0/folders/kjkfhieriiiweor023438”. The folder id is the string behind “https://drive.google.com/drive/u/0/folders/”

Copy the string “kjkfhieriiiweor023438” into path id(default is root) . If you did not put anything, default is root folder.

You also can put password to protect your folder. Default password value is index. You can change to the one you like. Blank means no password. 

1.3 Build code

Click build and code will generate in the text box. 

The Code will look like this . Don’t miss any characters during copy. 

var authConfig = {
    "siteName": "GoIndex", // 网站名称
    "root_pass": "index",  // 根目录密码，优先于.password
    "version" : "1.0.6", // 程序版本
    "theme" : "material", // material  classic 
    "client_id": "2026481.apps.googleusercontent.com",
    "client_secret": "X4Z3ca8xWDb1Vo-F9a7ZxJ",
    "refresh_token": "1//0dEuj2FeUz-Irycf2KM_fhulKLxEjMHaduXoxBtNo25ObcMKC2r-6GMQrbUB8", // 授权 token
    "root": "1ckQL_QZv-gTgdME-NOwIv" // 目录ID
};

var gd;

var html = `
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0,maximum-scale=1.0, user-scalable=no"/>
  <title>${authConfig.siteName}</title>
  <script src="//cdn.jsdelivr.net/combine/gh/jquery/[email protected]/dist/jquery.min.js,gh/donwa/goindex@${authConfig.version}/themes/${authConfig.theme}/app.js"></script>
</head>
<body>
</body>
</html>
`;

addEventListener('fetch', event => {
    event.respondWith(handleRequest(event.request));
});

/**
 * Fetch and log a request
 * @param {Request} request
 */
async function handleRequest(request) {
    if(gd == undefined){
      gd = new googleDrive(authConfig);
    }

    if(request.method == 'POST'){
      return apiRequest(request);
    }

    let url = new URL(request.url);
    let path = url.pathname;
    let action = url.searchParams.get('a');

    if(path.substr(-1) == '/' || action != null){
      return new Response(html,{status:200,headers:{'Content-Type':'text/html; charset=utf-8'}});
    }else{
      if(path.split('/').pop().toLowerCase() == ".password"){
         return new Response("",{status:404});
      }
      let file = await gd.file(path);
      let range = request.headers.get('Range');
      return gd.down(file.id, range);
    }
}


async function apiRequest(request) {
    let url = new URL(request.url);
    let path = url.pathname;

    let option = {status:200,headers:{'Access-Control-Allow-Origin':'*'}}

    if(path.substr(-1) == '/'){
      // check password
      let password = await gd.password(path);
      console.log("dir password", password);
      if(password != undefined && password != null && password != ""){
        try{
          var obj = await request.json();
        }catch(e){
          var obj = {};
        }
        console.log(password,obj);
        if(password.replace("\n", "") != obj.password){
          let html = `{"error": {"code": 401,"message": "password error."}}`;
          return new Response(html,option);
        }
      }
      let list = await gd.list(path);
      return new Response(JSON.stringify(list),option);
    }else{
      let file = await gd.file(path);
      let range = request.headers.get('Range');
      return new Response(JSON.stringify(file));
    }
}

class googleDrive {
    constructor(authConfig) {
        this.authConfig = authConfig;
        this.paths = [];
        this.files = [];
        this.passwords = [];
        this.paths["/"] = authConfig.root;
        if(authConfig.root_pass != ""){
         this.passwords["/"] = authConfig.root_pass;
        }
        this.accessToken();
    }

    async down(id, range=''){
      let url = `https://www.googleapis.com/drive/v3/files/${id}?alt=media`;
      let requestOption = await this.requestOption();
      requestOption.headers['Range'] = range;
      return await fetch(url, requestOption);
    }

    async file(path){
      if(typeof this.files[path] == 'undefined'){
        this.files[path]  = await this._file(path);
      }
      return this.files[path] ;
    }

    async _file(path){
      let arr = path.split('/');
      let name = arr.pop();
      name = decodeURIComponent(name).replace(/\'/g, "\\'");
      let dir = arr.join('/')+'/';
      console.log(name, dir);
      let parent = await this.findPathId(dir);
      console.log(parent);
      let url = 'https://www.googleapis.com/drive/v3/files';
      let params = {'includeItemsFromAllDrives':true,'supportsAllDrives':true};
      params.q = `'${parent}' in parents and name = '${name}' andtrashed = false`;
      params.fields = "files(id, name, mimeType, size ,createdTime, modifiedTime, iconLink, thumbnailLink)";
      url += '?'+this.enQuery(params);
      let requestOption = await this.requestOption();
      let response = await fetch(url, requestOption);
      let obj = await response.json();
      console.log(obj);
      return obj.files[0];
    }

    // 通过reqeust cache 来缓存
    async list(path){
      if (gd.cache == undefined) {
        gd.cache = {};
      }

      if (gd.cache[path]) {
        return gd.cache[path];
      }

      let id = await this.findPathId(path);
      var obj = await this._ls(id);
      if (obj.files && obj.files.length > 1000) {
            gd.cache[path] = obj;
      }

      return obj
    }

    async password(path){
      if(this.passwords[path] !== undefined){
        return this.passwords[path];
      }

      console.log("load",path,".password",this.passwords[path]);

      let file = await gd.file(path+'.password');
      if(file == undefined){
        this.passwords[path] = null;
      }else{
        let url = `https://www.googleapis.com/drive/v3/files/${file.id}?alt=media`;
        let requestOption = await this.requestOption();
        let response = await this.fetch200(url, requestOption);
        this.passwords[path] = await response.text();
      }

      return this.passwords[path];
    }

    async _ls(parent){
      console.log("_ls",parent);

      if(parent==undefined){
        return null;
      }
      const files = [];
      let pageToken;
      let obj;
      let params = {'includeItemsFromAllDrives':true,'supportsAllDrives':true};
      params.q = `'${parent}' in parents and trashed = false AND name !='.password'`;
      params.orderBy= 'folder,name,modifiedTime desc';
      params.fields = "nextPageToken, files(id, name, mimeType, size , modifiedTime)";
      params.pageSize = 1000;

      do {
        if (pageToken) {
            params.pageToken = pageToken;
        }
        let url = 'https://www.googleapis.com/drive/v3/files';
        url += '?'+this.enQuery(params);
        let requestOption = await this.requestOption();
        let response = await fetch(url, requestOption);
        obj = await response.json();
        files.push(...obj.files);
        pageToken = obj.nextPageToken;
      } while (pageToken);

      obj.files = files;
      return obj;
    }

    async findPathId(path){
      let c_path = '/';
      let c_id = this.paths[c_path];

      let arr = path.trim('/').split('/');
      for(let name of arr){
        c_path += name+'/';

        if(typeof this.paths[c_path] == 'undefined'){
          let id = await this._findDirId(c_id, name);
          this.paths[c_path] = id;
        }

        c_id = this.paths[c_path];
        if(c_id == undefined || c_id == null){
          break;
        }
      }
      console.log(this.paths);
      return this.paths[path];
    }

    async _findDirId(parent, name){
      name = decodeURIComponent(name).replace(/\'/g, "\\'");
      
      console.log("_findDirId",parent,name);

      if(parent==undefined){
        return null;
      }

      let url = 'https://www.googleapis.com/drive/v3/files';
      let params = {'includeItemsFromAllDrives':true,'supportsAllDrives':true};
      params.q = `'${parent}' in parents and mimeType = 'application/vnd.google-apps.folder' and name = '${name}'  and trashed = false`;
      params.fields = "nextPageToken, files(id, name, mimeType)";
      url += '?'+this.enQuery(params);
      let requestOption = await this.requestOption();
      let response = await fetch(url, requestOption);
      let obj = await response.json();
      if(obj.files[0] == undefined){
        return null;
      }
      return obj.files[0].id;
    }

    async accessToken(){
      console.log("accessToken");
      if(this.authConfig.expires == undefined  ||this.authConfig.expires< Date.now()){
        const obj = await this.fetchAccessToken();
        if(obj.access_token != undefined){
          this.authConfig.accessToken = obj.access_token;
          this.authConfig.expires = Date.now()+3500*1000;
        }
      }
      return this.authConfig.accessToken;
    }

    async fetchAccessToken() {
        console.log("fetchAccessToken");
        const url = "https://www.googleapis.com/oauth2/v4/token";
        const headers = {
            'Content-Type': 'application/x-www-form-urlencoded'
        };
        const post_data = {
            'client_id': this.authConfig.client_id,
            'client_secret': this.authConfig.client_secret,
            'refresh_token': this.authConfig.refresh_token,
            'grant_type': 'refresh_token'
        }

        let requestOption = {
            'method': 'POST',
            'headers': headers,
            'body': this.enQuery(post_data)
        };

        const response = await fetch(url, requestOption);
        return await response.json();
    }

    async fetch200(url, requestOption) {
        let response;
        for (let i = 0; i < 3; i++) {
            response = await fetch(url, requestOption);
            console.log(response.status);
            if (response.status != 403) {
                break;
            }
            await this.sleep(800 * (i + 1));
        }
        return response;
    }

    async requestOption(headers={},method='GET'){
      const accessToken = await this.accessToken();
      headers['authorization'] = 'Bearer '+ accessToken;
      return {'method': method, 'headers':headers};
    }

    enQuery(data) {
        const ret = [];
        for (let d in data) {
            ret.push(encodeURIComponent(d) + '=' + encodeURIComponent(data[d]));
        }
        return ret.join('&');
    }

    sleep(ms) {
        return new Promise(function (resolve, reject) {
            let i = 0;
            setTimeout(function () {
                console.log('sleep' + ms);
                i++;
                if (i >= 2) reject(new Error('i>=2'));
                else resolve(i);
            }, ms);
        })
    }
}

String.prototype.trim = function (char) {
    if (char) {
        return this.replace(new RegExp('^\\'+char+'+|\\'+char+'+











Deploy Code to Cloudflare Workers



2 Install Code to a new workers in Cloudflare


Create a new workers as I described in my previous post: "Build a Reverse Proxy Using Cloudflare Workers"




Additional option is to use your own domain to access it, but I found it usually not that stable. It will be much stable to use workers.dev link. (https://gd.51sec.workers.dev/)
Create a sub domain record, and mapping a Workers route to this new created Workers program. You can check the steps in this post: "Set Up CloudFlare Workers to Use Your Own Domain"



I did create gd.51sec.org for this purpose, but it is not that stable as original Cloudflare domain: https://gd.51sec.workers.dev/



Note: This method is much easier and faster. But sometimes, system will get busy and it will be very slow. 





Theme 1- Support Upload







3 One theme support Upload feature








Here are all codes which you can copy to use, change some id, token, secret settings.




  /**
   * @param typeMap [Object] Map of MIME type -> Array[extensions]
   * https://gdindex-code-builder.glitch.me/
   * [email protected] - tools
   */

self.props = {
 title: 'Google Drive Index - Tools',
 default_root_id: '1drwX137ArC66GP4Hsg-pnhzVbWpWiS', 
  client_id: '20226481.apps.googleusercontent.com',
 client_secret: 'X4Z3ca8xfWb1Vo-F9a7ZxJ',
 refresh_token: '1//0dEuj2FezPneCgYIARAAGA0SNwF-L9Iryf2KMgCymIYeHqUVZBO_fhulKLIxEjMHaduXoxBtNNAigo25ObcMKC2r-6GMQrbUB8',
  auth: false,
 user: 'admin',
 pass: 'Passw0rd1234-',
 upload: true,
 lite: false
};
(function () {
  'use strict';

  /**
   * @param typeMap [Object] Map of MIME type -> Array[extensions]
   * https://gdindex-code-builder.glitch.me/
   */
  function Mime() {
    this._types = Object.create(null);
    this._extensions = Object.create(null);

    for (var i = 0; i < arguments.length; i++) {
      this.define(arguments[i]);
    }

    this.define = this.define.bind(this);
    this.getType = this.getType.bind(this);
    this.getExtension = this.getExtension.bind(this);
  }

  /**
   * Define mimetype -> extension mappings.  Each key is a mime-type that maps
   * to an array of extensions associated with the type.  The first extension is
   * used as the default extension for the type.
   *
   * e.g. mime.define({'audio/ogg', ['oga', 'ogg', 'spx']});
   *
   * If a type declares an extension that has already been defined, an error will
   * be thrown.  To suppress this error and force the extension to be associated
   * with the new type, pass `force`=true.  Alternatively, you may prefix the
   * extension with "*" to map the type to extension, without mapping the
   * extension to the type.
   *
   * e.g. mime.define({'audio/wav', ['wav']}, {'audio/x-wav', ['*wav']});
   *
   *
   * @param map (Object) type definitions
   * @param force (Boolean) if true, force overriding of existing definitions
   */
  Mime.prototype.define = function(typeMap, force) {
    for (var type in typeMap) {
      var extensions = typeMap[type].map(function(t) {return t.toLowerCase()});
      type = type.toLowerCase();

      for (var i = 0; i < extensions.length; i++) {
        var ext = extensions[i];

        // '*' prefix = not the preferred type for this extension.  So fixup the
        // extension, and skip it.
        if (ext[0] == '*') {
          continue;
        }

        if (!force && (ext in this._types)) {
          throw new Error(
            'Attempt to change mapping for "' + ext +
            '" extension from "' + this._types[ext] + '" to "' + type +
            '". Pass `force=true` to allow this, otherwise remove "' + ext +
            '" from the list of extensions for "' + type + '".'
          );
        }

        this._types[ext] = type;
      }

      // Use first extension as default
      if (force || !this._extensions[type]) {
        var ext = extensions[0];
        this._extensions[type] = (ext[0] != '*') ? ext : ext.substr(1);
      }
    }
  };

  /**
   * Lookup a mime type based on extension
   */
  Mime.prototype.getType = function(path) {
    path = String(path);
    var last = path.replace(/^.*[/\\]/, '').toLowerCase();
    var ext = last.replace(/^.*\./, '').toLowerCase();

    var hasPath = last.length < path.length;
    var hasDot = ext.length < last.length - 1;

    return (hasDot || !hasPath) && this._types[ext] || null;
  };

  /**
   * Return file extension associated with a mime type
   */
  Mime.prototype.getExtension = function(type) {
    type = /^\s*([^;\s]*)/.test(type) && RegExp.$1;
    return type && this._extensions[type.toLowerCase()] || null;
  };

  var Mime_1 = Mime;

  var standard = {"application/andrew-inset":["ez"],"application/applixware":["aw"],"application/atom+xml":["atom"],"application/atomcat+xml":["atomcat"],"application/atomsvc+xml":["atomsvc"],"application/bdoc":["bdoc"],"application/ccxml+xml":["ccxml"],"application/cdmi-capability":["cdmia"],"application/cdmi-container":["cdmic"],"application/cdmi-domain":["cdmid"],"application/cdmi-object":["cdmio"],"application/cdmi-queue":["cdmiq"],"application/cu-seeme":["cu"],"application/dash+xml":["mpd"],"application/davmount+xml":["davmount"],"application/docbook+xml":["dbk"],"application/dssc+der":["dssc"],"application/dssc+xml":["xdssc"],"application/ecmascript":["ecma","es"],"application/emma+xml":["emma"],"application/epub+zip":["epub"],"application/exi":["exi"],"application/font-tdpfr":["pfr"],"application/geo+json":["geojson"],"application/gml+xml":["gml"],"application/gpx+xml":["gpx"],"application/gxf":["gxf"],"application/gzip":["gz"],"application/hjson":["hjson"],"application/hyperstudio":["stk"],"application/inkml+xml":["ink","inkml"],"application/ipfix":["ipfix"],"application/java-archive":["jar","war","ear"],"application/java-serialized-object":["ser"],"application/java-vm":["class"],"application/javascript":["js","mjs"],"application/json":["json","map"],"application/json5":["json5"],"application/jsonml+json":["jsonml"],"application/ld+json":["jsonld"],"application/lost+xml":["lostxml"],"application/mac-binhex40":["hqx"],"application/mac-compactpro":["cpt"],"application/mads+xml":["mads"],"application/manifest+json":["webmanifest"],"application/marc":["mrc"],"application/marcxml+xml":["mrcx"],"application/mathematica":["ma","nb","mb"],"application/mathml+xml":["mathml"],"application/mbox":["mbox"],"application/mediaservercontrol+xml":["mscml"],"application/metalink+xml":["metalink"],"application/metalink4+xml":["meta4"],"application/mets+xml":["mets"],"application/mods+xml":["mods"],"application/mp21":["m21","mp21"],"application/mp4":["mp4s","m4p"],"application/msword":["doc","dot"],"application/mxf":["mxf"],"application/n-quads":["nq"],"application/n-triples":["nt"],"application/octet-stream":["bin","dms","lrf","mar","so","dist","distz","pkg","bpk","dump","elc","deploy","exe","dll","deb","dmg","iso","img","msi","msp","msm","buffer"],"application/oda":["oda"],"application/oebps-package+xml":["opf"],"application/ogg":["ogx"],"application/omdoc+xml":["omdoc"],"application/onenote":["onetoc","onetoc2","onetmp","onepkg"],"application/oxps":["oxps"],"application/patch-ops-error+xml":["xer"],"application/pdf":["pdf"],"application/pgp-encrypted":["pgp"],"application/pgp-signature":["asc","sig"],"application/pics-rules":["prf"],"application/pkcs10":["p10"],"application/pkcs7-mime":["p7m","p7c"],"application/pkcs7-signature":["p7s"],"application/pkcs8":["p8"],"application/pkix-attr-cert":["ac"],"application/pkix-cert":["cer"],"application/pkix-crl":["crl"],"application/pkix-pkipath":["pkipath"],"application/pkixcmp":["pki"],"application/pls+xml":["pls"],"application/postscript":["ai","eps","ps"],"application/pskc+xml":["pskcxml"],"application/raml+yaml":["raml"],"application/rdf+xml":["rdf","owl"],"application/reginfo+xml":["rif"],"application/relax-ng-compact-syntax":["rnc"],"application/resource-lists+xml":["rl"],"application/resource-lists-diff+xml":["rld"],"application/rls-services+xml":["rs"],"application/rpki-ghostbusters":["gbr"],"application/rpki-manifest":["mft"],"application/rpki-roa":["roa"],"application/rsd+xml":["rsd"],"application/rss+xml":["rss"],"application/rtf":["rtf"],"application/sbml+xml":["sbml"],"application/scvp-cv-request":["scq"],"application/scvp-cv-response":["scs"],"application/scvp-vp-request":["spq"],"application/scvp-vp-response":["spp"],"application/sdp":["sdp"],"application/set-payment-initiation":["setpay"],"application/set-registration-initiation":["setreg"],"application/shf+xml":["shf"],"application/sieve":["siv","sieve"],"application/smil+xml":["smi","smil"],"application/sparql-query":["rq"],"application/sparql-results+xml":["srx"],"application/srgs":["gram"],"application/srgs+xml":["grxml"],"application/sru+xml":["sru"],"application/ssdl+xml":["ssdl"],"application/ssml+xml":["ssml"],"application/tei+xml":["tei","teicorpus"],"application/thraud+xml":["tfi"],"application/timestamped-data":["tsd"],"application/voicexml+xml":["vxml"],"application/wasm":["wasm"],"application/widget":["wgt"],"application/winhlp":["hlp"],"application/wsdl+xml":["wsdl"],"application/wspolicy+xml":["wspolicy"],"application/xaml+xml":["xaml"],"application/xcap-diff+xml":["xdf"],"application/xenc+xml":["xenc"],"application/xhtml+xml":["xhtml","xht"],"application/xml":["xml","xsl","xsd","rng"],"application/xml-dtd":["dtd"],"application/xop+xml":["xop"],"application/xproc+xml":["xpl"],"application/xslt+xml":["xslt"],"application/xspf+xml":["xspf"],"application/xv+xml":["mxml","xhvml","xvml","xvm"],"application/yang":["yang"],"application/yin+xml":["yin"],"application/zip":["zip"],"audio/3gpp":["*3gpp"],"audio/adpcm":["a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  var mime = new Mime_1(standard, other);

  /*
   * XFetch.js modified
   * A extremely simple fetch extension inspired by sindresorhus/ky.
   */
  const xf = (() => {
    const METHODS = ['get', 'post', 'put', 'patch', 'delete', 'head'];

    class HTTPError extends Error {
      constructor(res) {
        super(res.statusText);
        this.name = 'HTTPError';
        this.response = res;
      }

    }

    class XResponsePromise extends Promise {}

    for (const alias of ['arrayBuffer', 'blob', 'formData', 'json', 'text']) {
      // alias for .json() .text() etc...
      XResponsePromise.prototype[alias] = function (fn) {
        return this.then(res => res[alias]()).then(fn || (x => x));
      };
    }

    const {
      assign
    } = Object;

    function mergeDeep(target, source) {
      const isObject = obj => obj && typeof obj === 'object';

      if (!isObject(target) || !isObject(source)) {
        return source;
      }

      Object.keys(source).forEach(key => {
        const targetValue = target[key];
        const sourceValue = source[key];

        if (Array.isArray(targetValue) && Array.isArray(sourceValue)) {
          target[key] = targetValue.concat(sourceValue);
        } else if (isObject(targetValue) && isObject(sourceValue)) {
          target[key] = mergeDeep(Object.assign({}, targetValue), sourceValue);
        } else {
          target[key] = sourceValue;
        }
      });
      return target;
    }

    const fromEntries = ent => ent.reduce((acc, [k, v]) => (acc[k] = v, acc), {});

    const typeis = (...types) => val => types.some(type => typeof type === 'string' ? typeof val === type : val instanceof type);

    const isstr = typeis('string');
    const isobj = typeis('object');

    const isstrorobj = v => isstr(v) || isobj(v);

    const responseErrorThrower = res => {
      if (!res.ok) throw new HTTPError(res);
      return res;
    };

    const extend = (defaultInit = {}) => {
      const xfetch = (input, init = {}) => {
        mergeDeep(init, defaultInit);

        const createQueryString = o => new init.URLSearchParams(o).toString();

        const parseQueryString = s => fromEntries([...new init.URLSearchParams(s).entries()]);

        const url = new init.URL(input, init.baseURI || undefined);

        if (!init.headers) {
          init.headers = {};
        } else if (typeis(init.Headers)(init.headers)) {
          // Transform into object if it is `Headers`
          init.headers = fromEntries([...init.headers.entries()]);
        } // Add json or form on body


        if (init.json) {
          init.body = JSON.stringify(init.json);
          init.headers['Content-Type'] = 'application/json';
        } else if (isstrorobj(init.urlencoded)) {
          init.body = isstr(init.urlencoded) ? init.urlencoded : createQueryString(init.urlencoded);
          init.headers['Content-Type'] = 'application/x-www-form-urlencoded';
        } else if (typeis(init.FormData, 'object')(init.formData)) {
          // init.formData is data passed by user, init.FormData is FormData constructor
          if (!typeis(init.FormData)(init.formData)) {
            const fd = new init.FormData();

            for (const [k, v] of Object.entries(init.formData)) {
              fd.append(k, v);
            }

            init.formData = fd;
          }

          init.body = init.formData;
        } // Querystring


        if (init.qs) {
          if (isstr(init.qs)) init.qs = parseQueryString(init.qs);
          url.search = createQueryString(assign(fromEntries([...url.searchParams.entries()]), init.qs));
        }

        return XResponsePromise.resolve(init.fetch(url, init).then(responseErrorThrower));
      };

      for (const method of METHODS) {
        xfetch[method] = (input, init = {}) => {
          init.method = method.toUpperCase();
          return xfetch(input, init);
        };
      } // Extra methods and classes


      xfetch.extend = newDefaultInit => extend(assign({}, defaultInit, newDefaultInit));

      xfetch.HTTPError = HTTPError;
      return xfetch;
    };

    const isWindow = typeof document !== 'undefined';
    const isBrowser = typeof self !== 'undefined'; // works in both window & worker scope

    return isBrowser ? extend({
      fetch: fetch.bind(self),
      URL,
      Response,
      URLSearchParams,
      Headers,
      FormData,
      baseURI: isWindow ? document.baseURI : '' // since there is no document in webworkers

    }) : extend();
  })();

  class GoogleDrive {
    constructor(auth) {
      this.auth = auth;
      this.expires = 0;
      this._getIdCache = new Map();
    }

    async initializeClient() {
      // any method that do api call must call this beforehand
      if (Date.now() < this.expires) return;
      const resp = await xf.post('https://www.googleapis.com/oauth2/v4/token', {
        urlencoded: {
          client_id: this.auth.client_id,
          client_secret: this.auth.client_secret,
          refresh_token: this.auth.refresh_token,
          grant_type: 'refresh_token'
        }
      }).json();
      this.client = xf.extend({
        baseURI: 'https://www.googleapis.com/drive/v3/',
        headers: {
          Authorization: `Bearer ${resp.access_token}`
        }
      });
      this.expires = Date.now() + 3500 * 1000; // normally, it should expiers after 3600 seconds
    }

    async listDrive() {
      await this.initializeClient();
      return this.client.get('drives').json();
    }

    async download(id, range = '') {
      await this.initializeClient();
      return this.client.get(`files/${id}`, {
        qs: {
          includeItemsFromAllDrives: true,
          supportsAllDrives: true,
          alt: 'media'
        },
        headers: {
          Range: range
        }
      });
    }

    async downloadByPath(path, rootId = 'root', range = '') {
      const id = await this.getId(path, rootId);
      if (!id) return null;
      return this.download(id, range);
    }

    async getMeta(id) {
      await this.initializeClient();
      return this.client.get(`files/${id}`, {
        qs: {
          includeItemsFromAllDrives: true,
          supportsAllDrives: true,
          fields: '*'
        }
      }).json();
    }

    async getMetaByPath(path, rootId = 'root') {
      const id = await this.getId(path, rootId);
      if (!id) return null;
      return this.getMeta(id);
    }

    async listFolder(id) {
      await this.initializeClient();

      const getList = pageToken => {
        const qs = {
          includeItemsFromAllDrives: true,
          supportsAllDrives: true,
          q: `'${id}' in parents and trashed = false`,
          orderBy: 'folder,name,modifiedTime desc',
          fields: 'files(id,name,mimeType,size,modifiedTime),nextPageToken',
          pageSize: 1000
        };

        if (pageToken) {
          qs.pageToken = pageToken;
        }

        return this.client.get('files', {
          qs
        }).json();
      };

      const files = [];
      let pageToken;

      do {
        const resp = await getList(pageToken);
        files.push(...resp.files);
        pageToken = resp.nextPageToken;
      } while (pageToken);

      return {
        files
      };
    }

    async listFolderByPath(path, rootId = 'root') {
      const id = await this.getId(path, rootId);
      if (!id) return null;
      return this.listFolder(id);
    }

    async getId(path, rootId = 'root') {
      const toks = path.split('/').filter(Boolean);
      let id = rootId;

      for (const tok of toks) {
        id = await this._getId(id, tok);
      }

      return id;
    }

    async _getId(parentId, childName) {
      if (this._getIdCache.has(parentId + childName)) {
        return this._getIdCache.get(parentId + childName);
      }

      await this.initializeClient();
      childName = childName.replace(/\'/g, `\\'`); // escape single quote

      const resp = await this.client.get('files', {
        qs: {
          includeItemsFromAllDrives: true,
          supportsAllDrives: true,
          q: `'${parentId}' in parents and name = '${childName}'  and trashed = false`,
          fields: 'files(id)'
        }
      }).json().catch(e => ({
        files: []
      })); // if error, make it empty

      if (resp.files.length === 0) {
        return null;
      }

      this._getIdCache.has(parentId + childName);

      return resp.files[0].id; // when there are more than 1 items, simply return the first one
    }

    async upload(parentId, name, file) {
      await this.initializeClient();
      const createResp = await this.client.post('https://www.googleapis.com/upload/drive/v3/files', {
        qs: {
          uploadType: 'resumable',
          supportsAllDrives: true
        },
        json: {
          name,
          parents: [parentId]
        }
      });
      const putUrl = createResp.headers.get('Location');
      return this.client.put(putUrl, {
        body: file
      }).json();
    }

    async uploadByPath(path, name, file, rootId = 'root') {
      const id = await this.getId(path, rootId);
      if (!id) return null;
      return this.upload(id, name, file);
    }

    async delete(fileId) {
      return this.client.delete(`files/${fileId}`);
    }

    async deleteByPath(path, rootId = 'root') {
      const id = await this.getId(path, rootId);
      if (!id) return null;
      return this.delete(id);
    }

  }

  const gd = new GoogleDrive(self.props);
  const HTML = `<!DOCTYPE html><html lang=en><head><meta charset=utf-8><meta http-equiv=X-UA-Compatible content="IE=edge"><meta name=viewport content="width=device-width,initial-scale=1"><title>${self.props.title}</title><link href="/~_~_gdindex/resources/css/app.css" rel=stylesheet></head><body><script>window.props = { title: '${self.props.title}', default_root_id: '${self.props.default_root_id}', api: location.protocol + '//' + location.host, upload: ${self.props.upload} }<\/script><div id=app></div><script src="/~_~_gdindex/resources/js/app.js"><\/script></body></html>`;

  async function onGet(request) {
    let {
      pathname: path
    } = request;
    const rootId = request.searchParams.get('rootId') || self.props.default_root_id;

    if (path.startsWith('/~_~_gdindex/resources/')) {
      const remain = path.replace('/~_~_gdindex/resources/', '');
      const r = await fetch(`https://raw.githubusercontent.com/maple3142/GDIndex/master/web/dist/${remain}`);
      return new Response(r.body, {
        headers: {
          'Content-Type': mime.getType(remain) + '; charset=utf-8',
          'Cache-Control': 'max-age=600'
        }
      });
    } else if (path === '/~_~_gdindex/drives') {
      return new Response(JSON.stringify((await gd.listDrive())), {
        headers: {
          'Content-Type': 'application/json'
        }
      });
    } else if (path.substr(-1) === '/' || path.startsWith('/~viewer')) {
      return new Response(HTML, {
        headers: {
          'Content-Type': 'text/html; charset=utf-8'
        }
      });
    } else {
      const result = await gd.getMetaByPath(path, rootId);

      if (!result) {
        return new Response('null', {
          headers: {
            'Content-Type': 'application/json'
          },
          status: 404
        });
      }

      const isGoogleApps = result.mimeType.includes('vnd.google-apps');

      if (!isGoogleApps) {
        const r = await gd.download(result.id, request.headers.get('Range'));
        const h = new Headers(r.headers);
        h.set('Content-Disposition', `inline; filename*=UTF-8''${encodeURIComponent(result.name)}`);
        return new Response(r.body, {
          status: r.status,
          headers: h
        });
      } else {
        return Response.redirect(result.webViewLink, 302);
      }
    }
  }

  async function onPost(request) {
    let {
      pathname: path
    } = request;
    const rootId = request.searchParams.get('rootId') || self.props.default_root_id;

    if (path.substr(-1) === '/') {
      return new Response(JSON.stringify((await gd.listFolderByPath(path, rootId))), {
        headers: {
          'Content-Type': 'application/json'
        }
      });
    } else {
      const result = await gd.getMetaByPath(path, rootId);

      if (!result) {
        return new Response('null', {
          headers: {
            'Content-Type': 'application/json'
          },
          status: 404
        });
      }

      const isGoogleApps = result.mimeType.includes('vnd.google-apps');

      if (!isGoogleApps) {
        const r = await gd.download(result.id, request.headers.get('Range'));
        const h = new Headers(r.headers);
        h.set('Content-Disposition', `inline; filename*=UTF-8''${encodeURIComponent(result.name)}`);
        return new Response(r.body, {
          status: r.status,
          headers: h
        });
      } else {
        return Response.redirect(result.webViewLink, 302);
      }
    }
  }

  async function onPut(request) {
    let {
      pathname: path
    } = request;

    if (path.substr(-1) === '/') {
      return new Response(null, {
        headers: {
          'Content-Type': 'application/json'
        },
        status: 405
      });
    }

    const url = request.searchParams.get('url');
    let fileBody;

    if (url) {
      const u = new URL(url);
      const Referer = u.href;
      const Origin = u.protocol + '//' + u.host;
      fileBody = (await fetch(url, {
        headers: {
          Referer,
          Origin
        }
      })).body;
    } else {
      fileBody = request.body;
    }

    const tok = path.split('/');
    const name = tok.pop();
    const parent = tok.join('/');
    const rootId = request.searchParams.get('rootId') || self.props.default_root_id;
    return new Response(JSON.stringify((await gd.uploadByPath(parent, name, fileBody, rootId))), {
      headers: {
        'Content-Type': 'application/json'
      }
    });
  }

  function unauthorized() {
    return new Response('Unauthorized', {
      headers: {
        'WWW-Authenticate': 'Basic realm="goindex"',
        'Access-Control-Allow-Origin': '*'
      },
      status: 401
    });
  }

  function parseBasicAuth(auth) {
    try {
      return atob(auth.split(' ').pop()).split(':');
    } catch (e) {
      return [];
    }
  }

  function doBasicAuth(request) {
    const auth = request.headers.get('Authorization');

    if (!auth || !/^Basic [A-Za-z0-9._~+/-]+=*$/i.test(auth)) {
      return false;
    }

    const [user, pass] = parseBasicAuth(auth);
    return user === self.props.user && pass === self.props.pass;
  }

  function encodePathComponent(path) {
    return path.split('/').map(encodeURIComponent).join('/');
  }

  async function handleRequest(request) {
    if (request.method === 'OPTIONS') // allow preflight request
      return new Response('', {
        status: 200,
        headers: {
          'Access-Control-Allow-Origin': '*',
          'Access-Control-Allow-Headers': '*',
          'Access-Control-Allow-Methods': 'GET, POST, PUT, HEAD, OPTIONS'
        }
      });

    if (self.props.auth && !doBasicAuth(request)) {
      return unauthorized();
    }

    request = Object.assign({}, request, new URL(request.url));
    request.pathname = request.pathname.split('/').map(decodeURIComponent).map(decodeURIComponent) // for some super special cases, browser will force encode it...   eg: +αあるふぁきゅん。 - +♂.mp3
    .join('/');

    if (self.props.lite && request.pathname.endsWith('/')) {
      // lite mode
      const path = request.pathname;
      let parent = encodePathComponent(path.split('/').slice(0, -2).join('/') + '/');
      const {
        files
      } = await gd.listFolderByPath(path, self.props.default_root_id);
      let fileht = '';

      for (const f of files) {
        const isf = f.mimeType === 'application/vnd.google-apps.folder';
        const p = encodePathComponent(path + f.name);
        fileht += `<li><a href="${p + (isf ? '/' : '')}">${f.name}</a></li>`;
      }

      const ht = `<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<html>
<head>
<title>Index of ${path}</title>
</head>
<body>
<h1>Index of ${path}</h1>
<ul>
<li><a href="${parent}"> Parent Directory</a></li>
${fileht}
</ul>
</body>
</html>`;
      return new Response(ht, {
        status: 200,
        headers: {
          'Content-Type': 'text/html; charset=utf-8'
        }
      });
    }

    let resp;
    if (request.method === 'GET') resp = await onGet(request);else if (request.method === 'POST') resp = await onPost(request);else if (request.method === 'PUT') resp = await onPut(request);else resp = new Response('', {
      status: 405
    });
    const obj = Object.create(null);

    for (const [k, v] of resp.headers.entries()) {
      obj[k] = v;
    }

    return new Response(resp.body, {
      status: resp.status,
      statusText: resp.statusText,
      headers: Object.assign(obj, {
        'Access-Control-Allow-Origin': '*'
      })
    });
  }

  addEventListener('fetch', event => {
    event.respondWith(handleRequest(event.request).catch(err => {
      console.error(err);
      new Response(JSON.stringify(err.stack), {
        status: 500,
        headers: {
          'Content-Type': 'application/json'
        }
      });
    }));
  });

}());









Theme 2 - support upload

4 This is another goindex theme, which as much more features and faster speed, but no upload. 

Project： https://github.com/Aicirou/goindex-theme-acrou

Readme： https://github.com/Aicirou/goindex-theme-acrou/blob/master/README_zh.md

Demo： https://oss.achirou.workers.dev/







// =======Options START=======
var authConfig = {
  siteName: "Google Drive List", // 网站名称
  version: "1.1.1", // 程序版本
  theme: "acrou",
  // 强烈推荐使用自己的 client_id 和 client_secret
  client_id: "20226481.apps.googleusercontent.com",
  client_secret: "X4Z3ca8xfWDb1Vo-Fa7ZxJ",
  refresh_token: "1//0flZKZJG75JtyCgYIRAAGA8SNwF-L9Irxs2CpNKz1no4Fu_t2AE-tHqijgSDCJT5dXQqeIxqyyDDbEjXmP-sHwIAPTHPLU4UrA", // 授权 token
  /**
   * 设置要显示的多个云端硬盘；按格式添加多个
   * [id]: 可以是 团队盘id、子文件夹id、或者"root"（代表个人盘根目录）；
   * [name]: 显示的名称
   * [user]: Basic Auth 的用户名
   * [pass]: Basic Auth 的密码
   * [protect_file_link]: Basic Auth 是否用于保护文件链接，默认值（不设置时）为 false，即不保护文件链接（方便 直链下载/外部播放 等）
   * 每个盘的 Basic Auth 都可以单独设置。Basic Auth 默认保护该盘下所有文件夹/子文件夹路径
   * 【注意】默认不保护文件链接，这样可以方便 直链下载/外部播放;
   *       如果要保护文件链接，需要将 protect_file_link 设置为 true，此时如果要进行外部播放等操作，需要将 host 替换为 user:pass@host 的 形式
   * 不需要 Basic Auth 的盘，保持 user 和 pass 同时为空即可。（直接不设置也可以）
   * 【注意】对于id设置为为子文件夹id的盘将不支持搜索功能（不影响其他盘）。
   */
  "roots": [

 {
  "id": "root",
  "name": "Home",
  "user": "test",
  "pass": "Test1",
  "protect_file_link": false
 },
  
  {
  "id": "0EZdJ516op5f",
  "name": "tempgm",
  "protect_file_link": false
 },

 {
  "id": "0BzVNaW0p92e",
  "name": "51sec",
  "protect_file_link": false
 },
  
 {
  "id": "0KI73GVf3Foi",
  "name": "netsec",
  "protect_file_link": false
 }

],
  default_gd: 0,
  /**
   * 文件列表页面每页显示的数量。【推荐设置值为 100 到 1000 之间】；
   * 如果设置大于1000，会导致请求 drive api 时出错；
   * 如果设置的值过小，会导致文件列表页面滚动条增量加载（分页加载）失效；
   * 此值的另一个作用是，如果目录内文件数大于此设置值（即需要多页展示的），将会对首次列目录结果进行缓存。
   */
  files_list_page_size: 50,
  /**
   * 搜索结果页面每页显示的数量。【推荐设置值为 50 到 1000 之间】；
   * 如果设置大于1000，会导致请求 drive api 时出错；
   * 如果设置的值过小，会导致搜索结果页面滚动条增量加载（分页加载）失效；
   * 此值的大小影响搜索操作的响应速度。
   */
  search_result_list_page_size: 50,
  // 确认有 cors 用途的可以开启
  enable_cors_file_down: false,
  /**
   * 上面的 basic auth 已经包含了盘内全局保护的功能。所以默认不再去认证 .password 文件内的密码;
   * 如果在全局认证的基础上，仍需要给某些目录单独进行 .password 文件内的密码验证的话，将此选项设置为 true;
   * 【注意】如果开启了 .password 文件密码验证，每次列目录都会额外增加查询目录内 .password 文件是否存在的开销。
   */
  enable_password_file_verify: false,
};

var themeOptions = {
  cdn: "https://cdn.jsdelivr.net/gh/Aicirou/goindex-theme-acrou",
  // 主题版本号
  version: "2.0.5",
  //可选默认系统语言:en/zh-chs/zh-cht
  languages: "en",
  render: {
    /**
     * 是否渲染HEAD.md文件
     * Render HEAD.md file
     */
    head_md: true,
    /**
     * 是否渲染README.md文件
     * Render README.md file
     */
    readme_md: true,
    /**
     * 是否渲染文件/文件夹描述
     * Render file/folder description or not
     */
    desc: true,
  },
  /**
   * 播放器选项
   * Player options
   */
  player: {
    /**
     * 播放器api（不指定则使用浏览器默认播放器）
     * Player api(Use browser default player if not specified)
     */
    api: "https://api.jsonpop.cn/demo/blplyaer/?url=",
  },
};
// =======Options END=======

/**
 * global functions
 */
const FUNCS = {
  /**
   * 转换成针对谷歌搜索词法相对安全的搜索关键词
   */
  formatSearchKeyword: function (keyword) {
    let nothing = "";
    let space = " ";
    if (!keyword) return nothing;
    return keyword
      .replace(/(!=)|['"=<>/\\:]/g, nothing)
      .replace(/[,，|(){}]/g, space)
      .trim();
  },
};

/**
 * global consts
 * @type {{folder_mime_type: string, default_file_fields: string, gd_root_type: {share_drive: number, user_drive: number, sub_folder: number}}}
 */
const CONSTS = new (class {
  default_file_fields =
    "parents,id,name,mimeType,modifiedTime,createdTime,fileExtension,size";
  gd_root_type = {
    user_drive: 0,
    share_drive: 1,
    sub_folder: 2,
  };
  folder_mime_type = "application/vnd.google-apps.folder";
})();

// gd instances
var gds = [];

function html(current_drive_order = 0, model = {}) {
  return `
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0,maximum-scale=1.0, user-scalable=no"/>
  <title>${authConfig.siteName}</title>
  <style>
    @import url(${themeOptions.cdn}@${themeOptions.version}/dist/style.min.css);
  </style>
  <script>
    window.gdconfig = JSON.parse('${JSON.stringify({
      version: authConfig.version,
      themeOptions: themeOptions,
    })}');
    window.themeOptions = JSON.parse('${JSON.stringify(themeOptions)}');
    window.gds = JSON.parse('${JSON.stringify(
      authConfig.roots.map((it) => it.name)
    )}');
    window.MODEL = JSON.parse('${JSON.stringify(model)}');
    window.current_drive_order = ${current_drive_order};
  </script>
</head>
<body>
    <div id="app"></div>
    <script src="${themeOptions.cdn}@${
    themeOptions.version
  }/dist/app.min.js"></script>
</body>
</html>
`;
}

addEventListener("fetch", (event) => {
  event.respondWith(handleRequest(event.request));
});

/**
 * Fetch and log a request
 * @param {Request} request
 */
async function handleRequest(request) {
  if (gds.length === 0) {
    for (let i = 0; i < authConfig.roots.length; i++) {
      const gd = new googleDrive(authConfig, i);
      await gd.init();
      gds.push(gd);
    }
    // 这个操作并行，提高效率
    let tasks = [];
    gds.forEach((gd) => {
      tasks.push(gd.initRootType());
    });
    for (let task of tasks) {
      await task;
    }
  }

  // 从 path 中提取 drive order
  // 并根据 drive order 获取对应的 gd instance
  let gd;
  let url = new URL(request.url);
  let path = decodeURI(url.pathname);

  /**
   * 重定向至起始页
   * @returns {Response}
   */
  function redirectToIndexPage() {
    return new Response("", {
      status: 301,
      headers: { Location: `/${authConfig.default_gd}:/` },
    });
  }

  if (path == "/") return redirectToIndexPage();
  if (path.toLowerCase() == "/favicon.ico") {
    // 后面可以找一个 favicon
    return new Response("", { status: 404 });
  }

  // 特殊命令格式
  const command_reg = /^\/(?<num>\d+):(?<command>[a-zA-Z0-9]+)(\/.*)?$/g;
  const match = command_reg.exec(path);
  let command;
  if (match) {
    const num = match.groups.num;
    const order = Number(num);
    if (order >= 0 && order < gds.length) {
      gd = gds[order];
    } else {
      return redirectToIndexPage();
    }
    // basic auth
    for (const r = gd.basicAuthResponse(request); r; ) return r;
    command = match.groups.command;

    // 搜索
    if (command === "search") {
      if (request.method === "POST") {
        // 搜索结果
        return handleSearch(request, gd);
      } else {
        const params = url.searchParams;
        // 搜索页面
        return new Response(
          html(gd.order, {
            q: params.get("q") || "",
            is_search_page: true,
            root_type: gd.root_type,
          }),
          {
            status: 200,
            headers: { "Content-Type": "text/html; charset=utf-8" },
          }
        );
      }
    } else if (command === "id2path" && request.method === "POST") {
      return handleId2Path(request, gd);
    } else if (command === "view") {
      const params = url.searchParams;
      return gd.view(params.get("url"), request.headers.get("Range"));
    } else if (command !== "down" && request.method === "GET") {
      return new Response(html(gd.order, { root_type: gd.root_type }), {
        status: 200,
        headers: { "Content-Type": "text/html; charset=utf-8" },
      });
    }
  }
  const reg = new RegExp(`^(/\\d+:)${command}/`, "g");
  path = path.replace(reg, (p1, p2) => {
    return p2 + "/";
  });
  // 期望的 path 格式
  const common_reg = /^\/\d+:\/.*$/g;
  try {
    if (!path.match(common_reg)) {
      return redirectToIndexPage();
    }
    let split = path.split("/");
    let order = Number(split[1].slice(0, -1));
    if (order >= 0 && order < gds.length) {
      gd = gds[order];
    } else {
      return redirectToIndexPage();
    }
  } catch (e) {
    return redirectToIndexPage();
  }

  // basic auth
  // for (const r = gd.basicAuthResponse(request); r;) return r;
  const basic_auth_res = gd.basicAuthResponse(request);
  path = path.replace(gd.url_path_prefix, "") || "/";
  if (request.method == "POST") {
    return basic_auth_res || apiRequest(request, gd);
  }

  let action = url.searchParams.get("a");

  if (path.substr(-1) == "/" || action != null) {
    return (
      basic_auth_res ||
      new Response(html(gd.order, { root_type: gd.root_type }), {
        status: 200,
        headers: { "Content-Type": "text/html; charset=utf-8" },
      })
    );
  } else {
    if (path.split("/").pop().toLowerCase() == ".password") {
      return basic_auth_res || new Response("", { status: 404 });
    }
    let file = await gd.file(path);
    let range = request.headers.get("Range");
    if (gd.root.protect_file_link && basic_auth_res) return basic_auth_res;
    const is_down = !(command && command == "down");
    return gd.down(file.id, range, is_down);
  }
}

async function apiRequest(request, gd) {
  let url = new URL(request.url);
  let path = url.pathname;
  path = path.replace(gd.url_path_prefix, "") || "/";

  let option = { status: 200, headers: { "Access-Control-Allow-Origin": "*" } };

  if (path.substr(-1) == "/") {
    let deferred_pass = gd.password(path);
    let body = await request.text();
    body = JSON.parse(body);
    // 这样可以提升首次列目录时的速度。缺点是，如果password验证失败，也依然会产生列目录的开销
    let deferred_list_result = gd.list(
      path,
      body.page_token,
      Number(body.page_index)
    );

    // check .password file, if `enable_password_file_verify` is true
    if (authConfig["enable_password_file_verify"]) {
      let password = await gd.password(path);
      // console.log("dir password", password);
      if (password && password.replace("\n", "") !== body.password) {
        let html = `{"error": {"code": 401,"message": "password error."}}`;
        return new Response(html, option);
      }
    }

    let list_result = await deferred_list_result;
    return new Response(JSON.stringify(list_result), option);
  } else {
    let file = await gd.file(path);
    let range = request.headers.get("Range");
    return new Response(JSON.stringify(file));
  }
}

// 处理 search
async function handleSearch(request, gd) {
  const option = {
    status: 200,
    headers: { "Access-Control-Allow-Origin": "*" },
  };
  let body = await request.text();
  body = JSON.parse(body);
  let search_result = await gd.search(
    body.q || "",
    body.page_token,
    Number(body.page_index)
  );
  return new Response(JSON.stringify(search_result), option);
}

/**
 * 处理 id2path
 * @param request 需要 id 参数
 * @param gd
 * @returns {Promise<Response>} 【注意】如果从前台接收的id代表的项目不在目标gd盘下，那么response会返回给前台一个空字符串""
 */
async function handleId2Path(request, gd) {
  const option = {
    status: 200,
    headers: { "Access-Control-Allow-Origin": "*" },
  };
  let body = await request.text();
  body = JSON.parse(body);
  let path = await gd.findPathById(body.id);
  return new Response(path || "", option);
}

class googleDrive {
  constructor(authConfig, order) {
    // 每个盘对应一个order，对应一个gd实例
    this.order = order;
    this.root = authConfig.roots[order];
    this.root.protect_file_link = this.root.protect_file_link || false;
    this.url_path_prefix = `/${order}:`;
    this.authConfig = authConfig;
    // TODO: 这些缓存的失效刷新策略，后期可以制定一下
    // path id
    this.paths = [];
    // path file
    this.files = [];
    // path pass
    this.passwords = [];
    // id <-> path
    this.id_path_cache = {};
    this.id_path_cache[this.root["id"]] = "/";
    this.paths["/"] = this.root["id"];
    /*if (this.root['pass'] != "") {
            this.passwords['/'] = this.root['pass'];
        }*/
    // this.init();
  }

  /**
   * 初次授权；然后获取 user_drive_real_root_id
   * @returns {Promise<void>}
   */
  async init() {
    await this.accessToken();
    /*await (async () => {
            // 只获取1次
            if (authConfig.user_drive_real_root_id) return;
            const root_obj = await (gds[0] || this).findItemById('root');
            if (root_obj && root_obj.id) {
                authConfig.user_drive_real_root_id = root_obj.id
            }
        })();*/
    // 等待 user_drive_real_root_id ，只获取1次
    if (authConfig.user_drive_real_root_id) return;
    const root_obj = await (gds[0] || this).findItemById("root");
    if (root_obj && root_obj.id) {
      authConfig.user_drive_real_root_id = root_obj.id;
    }
  }

  /**
   * 获取根目录类型，设置到 root_type
   * @returns {Promise<void>}
   */
  async initRootType() {
    const root_id = this.root["id"];
    const types = CONSTS.gd_root_type;
    if (root_id === "root" || root_id === authConfig.user_drive_real_root_id) {
      this.root_type = types.user_drive;
    } else {
      const obj = await this.getShareDriveObjById(root_id);
      this.root_type = obj ? types.share_drive : types.sub_folder;
    }
  }

  /**
   * Returns a response that requires authorization, or null
   * @param request
   * @returns {Response|null}
   */
  basicAuthResponse(request) {
    const user = this.root.user || "",
      pass = this.root.pass || "",
      _401 = new Response("Unauthorized", {
        headers: {
          "WWW-Authenticate": `Basic realm="goindex:drive:${this.order}"`,
        },
        status: 401,
      });
    if (user || pass) {
      const auth = request.headers.get("Authorization");
      if (auth) {
        try {
          const [received_user, received_pass] = atob(
            auth.split(" ").pop()
          ).split(":");
          return received_user === user && received_pass === pass ? null : _401;
        } catch (e) {}
      }
    } else return null;
    return _401;
  }

  async view(url, range = "", inline = true) {
    let requestOption = await this.requestOption();
    requestOption.headers["Range"] = range;
    let res = await fetch(url, requestOption);
    const { headers } = (res = new Response(res.body, res));
    this.authConfig.enable_cors_file_down &&
      headers.append("Access-Control-Allow-Origin", "*");
    inline === true && headers.set("Content-Disposition", "inline");
    return res;
  }

  async down(id, range = "", inline = false) {
    let url = `https://www.googleapis.com/drive/v3/files/${id}?alt=media`;
    let requestOption = await this.requestOption();
    requestOption.headers["Range"] = range;
    let res = await fetch(url, requestOption);
    const { headers } = (res = new Response(res.body, res));
    this.authConfig.enable_cors_file_down &&
      headers.append("Access-Control-Allow-Origin", "*");
    inline === true && headers.set("Content-Disposition", "inline");
    return res;
  }

  async file(path) {
    if (typeof this.files[path] == "undefined") {
      this.files[path] = await this._file(path);
    }
    return this.files[path];
  }

  async _file(path) {
    let arr = path.split("/");
    let name = arr.pop();
    name = decodeURIComponent(name).replace(/\'/g, "\\'");
    let dir = arr.join("/") + "/";
    // console.log(name, dir);
    let parent = await this.findPathId(dir);
    // console.log(parent);
    let url = "https://www.googleapis.com/drive/v3/files";
    let params = { includeItemsFromAllDrives: true, supportsAllDrives: true };
    params.q = `'${parent}' in parents and name = '${name}' and trashed = false`;
    params.fields =
      "files(id, name, mimeType, size ,createdTime, modifiedTime, iconLink, thumbnailLink)";
    url += "?" + this.enQuery(params);
    let requestOption = await this.requestOption();
    let response = await fetch(url, requestOption);
    let obj = await response.json();
    // console.log(obj);
    return obj.files[0];
  }

  // 通过reqeust cache 来缓存
  async list(path, page_token = null, page_index = 0) {
    if (this.path_children_cache == undefined) {
      // { <path> :[ {nextPageToken:'',data:{}}, {nextPageToken:'',data:{}} ...], ...}
      this.path_children_cache = {};
    }

    if (
      this.path_children_cache[path] &&
      this.path_children_cache[path][page_index] &&
      this.path_children_cache[path][page_index].data
    ) {
      let child_obj = this.path_children_cache[path][page_index];
      return {
        nextPageToken: child_obj.nextPageToken || null,
        curPageIndex: page_index,
        data: child_obj.data,
      };
    }

    let id = await this.findPathId(path);
    let result = await this._ls(id, page_token, page_index);
    let data = result.data;
    // 对有多页的，进行缓存
    if (result.nextPageToken && data.files) {
      if (!Array.isArray(this.path_children_cache[path])) {
        this.path_children_cache[path] = [];
      }
      this.path_children_cache[path][Number(result.curPageIndex)] = {
        nextPageToken: result.nextPageToken,
        data: data,
      };
    }

    return result;
  }

  async _ls(parent, page_token = null, page_index = 0) {
    // console.log("_ls", parent);

    if (parent == undefined) {
      return null;
    }
    let obj;
    let params = { includeItemsFromAllDrives: true, supportsAllDrives: true };
    params.q = `'${parent}' in parents and trashed = false AND name !='.password'`;
    params.orderBy = "folder,name,modifiedTime desc";
    params.fields =
      "nextPageToken, files(id, name, mimeType, size , modifiedTime, thumbnailLink, description)";
    params.pageSize = this.authConfig.files_list_page_size;

    if (page_token) {
      params.pageToken = page_token;
    }
    let url = "https://www.googleapis.com/drive/v3/files";
    url += "?" + this.enQuery(params);
    let requestOption = await this.requestOption();
    let response = await fetch(url, requestOption);
    obj = await response.json();

    return {
      nextPageToken: obj.nextPageToken || null,
      curPageIndex: page_index,
      data: obj,
    };

    /*do {
            if (pageToken) {
                params.pageToken = pageToken;
            }
            let url = 'https://www.googleapis.com/drive/v3/files';
            url += '?' + this.enQuery(params);
            let requestOption = await this.requestOption();
            let response = await fetch(url, requestOption);
            obj = await response.json();
            files.push(...obj.files);
            pageToken = obj.nextPageToken;
        } while (pageToken);*/
  }

  async password(path) {
    if (this.passwords[path] !== undefined) {
      return this.passwords[path];
    }

    // console.log("load", path, ".password", this.passwords[path]);

    let file = await this.file(path + ".password");
    if (file == undefined) {
      this.passwords[path] = null;
    } else {
      let url = `https://www.googleapis.com/drive/v3/files/${file.id}?alt=media`;
      let requestOption = await this.requestOption();
      let response = await this.fetch200(url, requestOption);
      this.passwords[path] = await response.text();
    }

    return this.passwords[path];
  }

  /**
   * 通过 id 获取 share drive 信息
   * @param any_id
   * @returns {Promise<null|{id}|any>} 任何非正常情况都返回 null
   */
  async getShareDriveObjById(any_id) {
    if (!any_id) return null;
    if ("string" !== typeof any_id) return null;

    let url = `https://www.googleapis.com/drive/v3/drives/${any_id}`;
    let requestOption = await this.requestOption();
    let res = await fetch(url, requestOption);
    let obj = await res.json();
    if (obj && obj.id) return obj;

    return null;
  }

  /**
   * 搜索
   * @returns {Promise<{data: null, nextPageToken: null, curPageIndex: number}>}
   */
  async search(origin_keyword, page_token = null, page_index = 0) {
    const types = CONSTS.gd_root_type;
    const is_user_drive = this.root_type === types.user_drive;
    const is_share_drive = this.root_type === types.share_drive;

    const empty_result = {
      nextPageToken: null,
      curPageIndex: page_index,
      data: null,
    };

    if (!is_user_drive && !is_share_drive) {
      return empty_result;
    }
    let keyword = FUNCS.formatSearchKeyword(origin_keyword);
    if (!keyword) {
      // 关键词为空，返回
      return empty_result;
    }
    let words = keyword.split(/\s+/);
    let name_search_str = `name contains '${words.join(
      "' AND name contains '"
    )}'`;

    // corpora 为 user 是个人盘 ，为 drive 是团队盘。配合 driveId
    let params = {};
    if (is_user_drive) {
      params.corpora = "user";
    }
    if (is_share_drive) {
      params.corpora = "drive";
      params.driveId = this.root.id;
      // This parameter will only be effective until June 1, 2020. Afterwards shared drive items will be included in the results.
      params.includeItemsFromAllDrives = true;
      params.supportsAllDrives = true;
    }
    if (page_token) {
      params.pageToken = page_token;
    }
    params.q = `trashed = false AND name !='.password' AND (${name_search_str})`;
    params.fields =
      "nextPageToken, files(id, name, mimeType, size , modifiedTime, thumbnailLink, description)";
    params.pageSize = this.authConfig.search_result_list_page_size;
    // params.orderBy = 'folder,name,modifiedTime desc';

    let url = "https://www.googleapis.com/drive/v3/files";
    url += "?" + this.enQuery(params);
    // console.log(params)
    let requestOption = await this.requestOption();
    let response = await fetch(url, requestOption);
    let res_obj = await response.json();

    return {
      nextPageToken: res_obj.nextPageToken || null,
      curPageIndex: page_index,
      data: res_obj,
    };
  }

  /**
   * 一层一层的向上获取这个文件或文件夹的上级文件夹的 file 对象。注意：会很慢！！！
   * 最多向上寻找到当前 gd 对象的根目录 (root id)
   * 只考虑一条单独的向上链。
   * 【注意】如果此id代表的项目不在目标gd盘下，那么此函数会返回null
   *
   * @param child_id
   * @param contain_myself
   * @returns {Promise<[]>}
   */
  async findParentFilesRecursion(child_id, contain_myself = true) {
    const gd = this;
    const gd_root_id = gd.root.id;
    const user_drive_real_root_id = authConfig.user_drive_real_root_id;
    const is_user_drive = gd.root_type === CONSTS.gd_root_type.user_drive;

    // 自下向上查询的终点目标id
    const target_top_id = is_user_drive ? user_drive_real_root_id : gd_root_id;
    const fields = CONSTS.default_file_fields;

    // [{},{},...]
    const parent_files = [];
    let meet_top = false;

    async function addItsFirstParent(file_obj) {
      if (!file_obj) return;
      if (!file_obj.parents) return;
      if (file_obj.parents.length < 1) return;

      // ['','',...]
      let p_ids = file_obj.parents;
      if (p_ids && p_ids.length > 0) {
        // its first parent
        const first_p_id = p_ids[0];
        if (first_p_id === target_top_id) {
          meet_top = true;
          return;
        }
        const p_file_obj = await gd.findItemById(first_p_id);
        if (p_file_obj && p_file_obj.id) {
          parent_files.push(p_file_obj);
          await addItsFirstParent(p_file_obj);
        }
      }
    }

    const child_obj = await gd.findItemById(child_id);
    if (contain_myself) {
      parent_files.push(child_obj);
    }
    await addItsFirstParent(child_obj);

    return meet_top ? parent_files : null;
  }

  /**
   * 获取相对于本盘根目录的path
   * @param child_id
   * @returns {Promise<string>} 【注意】如果此id代表的项目不在目标gd盘下，那么此方法会返回空字符串""
   */
  async findPathById(child_id) {
    if (this.id_path_cache[child_id]) {
      return this.id_path_cache[child_id];
    }

    const p_files = await this.findParentFilesRecursion(child_id);
    if (!p_files || p_files.length < 1) return "";

    let cache = [];
    // 把查出来的每一级的path和id都缓存一下
    p_files.forEach((value, idx) => {
      const is_folder =
        idx === 0 ? p_files[idx].mimeType === CONSTS.folder_mime_type : true;
      let path =
        "/" +
        p_files
          .slice(idx)
          .map((it) => it.name)
          .reverse()
          .join("/");
      if (is_folder) path += "/";
      cache.push({ id: p_files[idx].id, path: path });
    });

    cache.forEach((obj) => {
      this.id_path_cache[obj.id] = obj.path;
      this.paths[obj.path] = obj.id;
    });

    /*const is_folder = p_files[0].mimeType === CONSTS.folder_mime_type;
        let path = '/' + p_files.map(it => it.name).reverse().join('/');
        if (is_folder) path += '/';*/

    return cache[0].path;
  }

  // 根据id获取file item
  async findItemById(id) {
    const is_user_drive = this.root_type === CONSTS.gd_root_type.user_drive;
    let url = `https://www.googleapis.com/drive/v3/files/${id}?fields=${
      CONSTS.default_file_fields
    }${is_user_drive ? "" : "&supportsAllDrives=true"}`;
    let requestOption = await this.requestOption();
    let res = await fetch(url, requestOption);
    return await res.json();
  }

  async findPathId(path) {
    let c_path = "/";
    let c_id = this.paths[c_path];

    let arr = path.trim("/").split("/");
    for (let name of arr) {
      c_path += name + "/";

      if (typeof this.paths[c_path] == "undefined") {
        let id = await this._findDirId(c_id, name);
        this.paths[c_path] = id;
      }

      c_id = this.paths[c_path];
      if (c_id == undefined || c_id == null) {
        break;
      }
    }
    // console.log(this.paths);
    return this.paths[path];
  }

  async _findDirId(parent, name) {
    name = decodeURIComponent(name).replace(/\'/g, "\\'");

    // console.log("_findDirId", parent, name);

    if (parent == undefined) {
      return null;
    }

    let url = "https://www.googleapis.com/drive/v3/files";
    let params = { includeItemsFromAllDrives: true, supportsAllDrives: true };
    params.q = `'${parent}' in parents and mimeType = 'application/vnd.google-apps.folder' and name = '${name}'  and trashed = false`;
    params.fields = "nextPageToken, files(id, name, mimeType)";
    url += "?" + this.enQuery(params);
    let requestOption = await this.requestOption();
    let response = await fetch(url, requestOption);
    let obj = await response.json();
    if (obj.files[0] == undefined) {
      return null;
    }
    return obj.files[0].id;
  }

  async accessToken() {
    console.log("accessToken");
    if (
      this.authConfig.expires == undefined ||
      this.authConfig.expires < Date.now()
    ) {
      const obj = await this.fetchAccessToken();
      if (obj.access_token != undefined) {
        this.authConfig.accessToken = obj.access_token;
        this.authConfig.expires = Date.now() + 3500 * 1000;
      }
    }
    return this.authConfig.accessToken;
  }

  async fetchAccessToken() {
    console.log("fetchAccessToken");
    const url = "https://www.googleapis.com/oauth2/v4/token";
    const headers = {
      "Content-Type": "application/x-www-form-urlencoded",
    };
    const post_data = {
      client_id: this.authConfig.client_id,
      client_secret: this.authConfig.client_secret,
      refresh_token: this.authConfig.refresh_token,
      grant_type: "refresh_token",
    };

    let requestOption = {
      method: "POST",
      headers: headers,
      body: this.enQuery(post_data),
    };

    const response = await fetch(url, requestOption);
    return await response.json();
  }

  async fetch200(url, requestOption) {
    let response;
    for (let i = 0; i < 3; i++) {
      response = await fetch(url, requestOption);
      console.log(response.status);
      if (response.status != 403) {
        break;
      }
      await this.sleep(800 * (i + 1));
    }
    return response;
  }

  async requestOption(headers = {}, method = "GET") {
    const accessToken = await this.accessToken();
    headers["authorization"] = "Bearer " + accessToken;
    return { method: method, headers: headers };
  }

  enQuery(data) {
    const ret = [];
    for (let d in data) {
      ret.push(encodeURIComponent(d) + "=" + encodeURIComponent(data[d]));
    }
    return ret.join("&");
  }

  sleep(ms) {
    return new Promise(function (resolve, reject) {
      let i = 0;
      setTimeout(function () {
        console.log("sleep" + ms);
        i++;
        if (i >= 2) reject(new Error("i>=2"));
        else resolve(i);
      }, ms);
    });
  }
}

String.prototype.trim = function (char) {
  if (char) {
    return this.replace(
      new RegExp("^\\" + char + "+|\\" + char + "+$", "g"),
      ""
    );
  }
  return this.replace(/^\s+|\s+$/g, "");
};








    References



donwa/goindex
https://installen.gd.workers.dev/
Build a Serverless Bookmark Website Use Cloudflare Worker
Using Cloudflare Workers to Deploy A Free Google Drive Directory Indexer in 5 Minutes
Set Up CloudFlare Workers to Use Your Own Domain
Build a Reverse Proxy Using Cloudflare Workers




YouTube Video:

, ‘g’), ”);
}
return this.replace(/^\s+|\s+$/g, ”);}

Deploy Code to Cloudflare Workers

2 Install Code to a new workers in Cloudflare

Create a new workers as I described in my previous post: “Build a Reverse Proxy Using Cloudflare Workers“

Additional option is to use your own domain to access it, but I found it usually not that stable. It will be much stable to use workers.dev link. (https://gd.51sec.workers.dev/)

Create a sub domain record, and mapping a Workers route to this new created Workers program. You can check the steps in this post: “Set Up CloudFlare Workers to Use Your Own Domain“

I did create gd.51sec.org for this purpose, but it is not that stable as original Cloudflare domain: https://gd.51sec.workers.dev/

Note: This method is much easier and faster. But sometimes, system will get busy and it will be very slow. 

Theme 1- Support Upload

3 One theme support Upload feature

Here are all codes which you can copy to use, change some id, token, secret settings.

Theme 2 – support upload

4 This is another goindex theme, which as much more features and faster speed, but no upload.

Project： https://github.com/Aicirou/goindex-theme-acrou

Readme： https://github.com/Aicirou/goindex-theme-acrou/blob/master/README_zh.md

Demo： https://oss.achirou.workers.dev/

References

YouTube Video:

3 thoughts on “Using Cloudflare Workers to Deploy A Free Google Drive Directory Indexer in 5 Minutes”

skeythay says:

2020-08-07 at 3:07 am

Since many use Google Drive to build Drive Stacks and collecting links via IFTTT for indexing purposes, could this also be another way to increase indexation? Since Cloudflare basically deploys this worker site to all of its nodes, seems like a good way to boost the links and docs put into a Google Drive

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1. netsec says:
  
  2020-08-08 at 2:53 pm
  
  Good thoughts. I am not sure if this is a good way to increase indexation. I do see some sites are collecting those Google drive links and put them into a site bookmark page by categories.
  
  Loading...
  
Jatin says:

2021-05-30 at 4:29 pm

How to download files from this type of shared drive plz reply

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Using Cloudflare Workers to Deploy A Free Google Drive Directory Indexer in 5 Minutes

ByJon

Generate Workers Code

Deploy Code to Cloudflare Workers

Theme 1- Support Upload

Theme 2 - support upload

Deploy Code to Cloudflare Workers

Theme 1- Support Upload

Theme 2 – support upload

Like this:

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ByJon

Generate Workers Code

Deploy Code to Cloudflare Workers

Theme 1- Support Upload

Theme 2 - support upload

Deploy Code to Cloudflare Workers

Theme 1- Support Upload

Theme 2 – support upload

Share this:

Like this:

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