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Brazen Subscriptions Loader

Helper class for loading account subscriptions

Script này sẽ không được không được cài đặt trực tiếp. Nó là một thư viện cho các script khác để bao gồm các chỉ thị meta // @require https://update.greasyfork.org/scripts/424516/1114774/Brazen%20Subscriptions%20Loader.js 

// ==UserScript==
// @name         Brazen Subscriptions Loader
// @namespace    brazenvoid
// @version      1.0.1
// @author       brazenvoid
// @license      GPL-3.0-only
// @description  Helper class for loading account subscriptions
// ==/UserScript==

class BrazenSubscriptionsLoader
{
    /**
     * @callback SubscriptionLoaderGetPageCountCallback
     * @param {JQuery} page
     * @return {number}
     */

    /**
     * @callback SubscriptionLoaderGetPageUrlCallback
     * @param {string} baseUrl
     * @param {number} pageNo
     * @return {string}
     */

    /**
     * @callback SubscriptionLoaderProgressReportingCallback
     * @param {string} status
     */

    /**
     * @callback SubscriptionLoaderSubscriptionsGatheredCallback
     * @param {string[]} subscriptions
     */

    /**
     * @typedef {{url: string, getPageCount: SubscriptionLoaderGetPageCountCallback, getPageUrl: SubscriptionLoaderGetPageUrlCallback,
     *            subscriptionNameSelector: string, subscriptionsCountSelector: string}} SubscriptionLoaderConfig
     */

    /**
     * @param {SubscriptionLoaderProgressReportingCallback} onProgressUpdate
     * @param {SubscriptionLoaderSubscriptionsGatheredCallback} onSubscriptionsGathered
     */
    constructor (onProgressUpdate, onSubscriptionsGathered)
    {
        /**
         * @type {number}
         * @private
         */
        this._configIterator = 0

        /**
         * @type {SubscriptionLoaderConfig[]}
         * @private
         */
        this._configs = []

        /**
         * @type {SubscriptionLoaderProgressReportingCallback}
         * @private
         */
        this._onProgressUpdate = onProgressUpdate

        /**
         * @type {SubscriptionLoaderSubscriptionsGatheredCallback}
         * @private
         */
        this._onSubscriptionsGathered = onSubscriptionsGathered

        /**
         * @type {JQuery}
         * @private
         */
        this._sandbox = null

        /**
         * @type {SubscriptionLoaderConfig}
         * @private
         */
        this._selectedConfig = {}

        /**
         * @type {*[]}
         * @private
         */
        this._subscriptions = []
    }

    /**
     * Loads and records subscriptions by page
     * @param {number} maxPage
     * @param {number} pageNo
     * @private
     */
    _loadSubscriptionsPage (pageNo, maxPage)
    {
        this._sandbox.empty().load(this._selectedConfig.getPageUrl(this._selectedConfig.url, pageNo), () => {
            this._sandbox.find(this._selectedConfig.subscriptionNameSelector).each((index, element) => {
                this._subscriptions.push($(element).text().trim())
            })
            this._onProgressUpdate('Gathering subscriptions - ' + Math.ceil(((pageNo / maxPage) * 100)) + '% Complete')
            pageNo++
            if (pageNo <= maxPage) {
                this._loadSubscriptionsPage(pageNo, maxPage)
            } else {
                this._configIterator++
                if (this._configIterator < this._configs.length) {
                    this._processSubscriptions()
                } else {
                    this._sandbox.remove()
                    this._onProgressUpdate('Loaded ' + this._subscriptions.length + ' subscriptions.')
                    this._onSubscriptionsGathered(this._subscriptions)
                    this._configIterator = 0
                    this._subscriptions = []
                }
            }
        })
    }

    /**
     * @private
     */
    _processSubscriptions ()
    {
        this._selectedConfig = this._configs[this._configIterator]
        this._sandbox.empty().load(this._selectedConfig.url + ' ' + this._selectedConfig.subscriptionsCountSelector, () => {
            this._loadSubscriptionsPage(1, Math.ceil(this._selectedConfig.getPageCount(this._sandbox)))
        })
    }

    /**
     * @param {SubscriptionLoaderConfig} config
     * @returns {BrazenSubscriptionsLoader}
     */
    addConfig (config)
    {
        this._configs.push(config)
        return this
    }

    run ()
    {
        this._onProgressUpdate('Gathering subscriptions - 0% Complete')
        this._sandbox = $('<div id="brazen-subscriptions-loader-sandbox" hidden/>').appendTo('body')
        this._processSubscriptions()
    }
}