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Brazen Subscriptions Loader

Helper class for loading account subscriptions

此脚本不应直接安装，它是一个供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.cn-greasyfork.org/scripts/424516/1114774/Brazen%20Subscriptions%20Loader.js 

  1. // ==UserScript==
  2. // @name         Brazen Subscriptions Loader
  3. // @namespace    brazenvoid
  4. // @version      1.0.1
  5. // @author       brazenvoid
  6. // @license      GPL-3.0-only
  7. // @description  Helper class for loading account subscriptions
  8. // ==/UserScript==
  9.  
  10. class BrazenSubscriptionsLoader
  11. {
  12.     /**
  13.      * @callback SubscriptionLoaderGetPageCountCallback
  14.      * @param {JQuery} page
  15.      * @return {number}
  16.      */
  17.  
  18.     /**
  19.      * @callback SubscriptionLoaderGetPageUrlCallback
  20.      * @param {string} baseUrl
  21.      * @param {number} pageNo
  22.      * @return {string}
  23.      */
  24.  
  25.     /**
  26.      * @callback SubscriptionLoaderProgressReportingCallback
  27.      * @param {string} status
  28.      */
  29.  
  30.     /**
  31.      * @callback SubscriptionLoaderSubscriptionsGatheredCallback
  32.      * @param {string[]} subscriptions
  33.      */
  34.  
  35.     /**
  36.      * @typedef {{url: string, getPageCount: SubscriptionLoaderGetPageCountCallback, getPageUrl: SubscriptionLoaderGetPageUrlCallback,
  37.      *            subscriptionNameSelector: string, subscriptionsCountSelector: string}} SubscriptionLoaderConfig
  38.      */
  39.  
  40.     /**
  41.      * @param {SubscriptionLoaderProgressReportingCallback} onProgressUpdate
  42.      * @param {SubscriptionLoaderSubscriptionsGatheredCallback} onSubscriptionsGathered
  43.      */
  44.     constructor (onProgressUpdate, onSubscriptionsGathered)
  45.     {
  46.         /**
  47.          * @type {number}
  48.          * @private
  49.          */
  50.         this._configIterator = 0
  51.  
  52.         /**
  53.          * @type {SubscriptionLoaderConfig[]}
  54.          * @private
  55.          */
  56.         this._configs = []
  57.  
  58.         /**
  59.          * @type {SubscriptionLoaderProgressReportingCallback}
  60.          * @private
  61.          */
  62.         this._onProgressUpdate = onProgressUpdate
  63.  
  64.         /**
  65.          * @type {SubscriptionLoaderSubscriptionsGatheredCallback}
  66.          * @private
  67.          */
  68.         this._onSubscriptionsGathered = onSubscriptionsGathered
  69.  
  70.         /**
  71.          * @type {JQuery}
  72.          * @private
  73.          */
  74.         this._sandbox = null
  75.  
  76.         /**
  77.          * @type {SubscriptionLoaderConfig}
  78.          * @private
  79.          */
  80.         this._selectedConfig = {}
  81.  
  82.         /**
  83.          * @type {*[]}
  84.          * @private
  85.          */
  86.         this._subscriptions = []
  87.     }
  88.  
  89.     /**
  90.      * Loads and records subscriptions by page
  91.      * @param {number} maxPage
  92.      * @param {number} pageNo
  93.      * @private
  94.      */
  95.     _loadSubscriptionsPage (pageNo, maxPage)
  96.     {
  97.         this._sandbox.empty().load(this._selectedConfig.getPageUrl(this._selectedConfig.url, pageNo), () => {
  98.             this._sandbox.find(this._selectedConfig.subscriptionNameSelector).each((index, element) => {
  99.                 this._subscriptions.push($(element).text().trim())
  100.             })
  101.             this._onProgressUpdate('Gathering subscriptions - ' + Math.ceil(((pageNo / maxPage) * 100)) + '% Complete')
  102.             pageNo++
  103.             if (pageNo <= maxPage) {
  104.                 this._loadSubscriptionsPage(pageNo, maxPage)
  105.             } else {
  106.                 this._configIterator++
  107.                 if (this._configIterator < this._configs.length) {
  108.                     this._processSubscriptions()
  109.                 } else {
  110.                     this._sandbox.remove()
  111.                     this._onProgressUpdate('Loaded ' + this._subscriptions.length + ' subscriptions.')
  112.                     this._onSubscriptionsGathered(this._subscriptions)
  113.                     this._configIterator = 0
  114.                     this._subscriptions = []
  115.                 }
  116.             }
  117.         })
  118.     }
  119.  
  120.     /**
  121.      * @private
  122.      */
  123.     _processSubscriptions ()
  124.     {
  125.         this._selectedConfig = this._configs[this._configIterator]
  126.         this._sandbox.empty().load(this._selectedConfig.url + ' ' + this._selectedConfig.subscriptionsCountSelector, () => {
  127.             this._loadSubscriptionsPage(1, Math.ceil(this._selectedConfig.getPageCount(this._sandbox)))
  128.         })
  129.     }
  130.  
  131.     /**
  132.      * @param {SubscriptionLoaderConfig} config
  133.      * @returns {BrazenSubscriptionsLoader}
  134.      */
  135.     addConfig (config)
  136.     {
  137.         this._configs.push(config)
  138.         return this
  139.     }
  140.  
  141.     run ()
  142.     {
  143.         this._onProgressUpdate('Gathering subscriptions - 0% Complete')
  144.         this._sandbox = $('<div id="brazen-subscriptions-loader-sandbox" hidden/>').appendTo('body')
  145.         this._processSubscriptions()
  146.     }
  147. }