// ==UserScript==// @name         pagination-manager// @description  infinite scroll// @namespace    Violentmonkey Scripts// @author       smartacephale// @license      MIT// @version      1.42// @match        *://*/*// @grant        unsafeWindow// ==/UserScript==class PaginationManager {/*** @param {Vue.reactive} state* @param {Vue.reactive} stateLocale* @param {Rules} rules - WEBSITE_RULES class with methods:* - URL_DATA { iteratable_url, offset },* - PAGINATION_LAST* @param {Function} handleHtmlCallback* @param {number} delay - milliseconds* @param {Function} [alternativeGenerator] - Optional custom generator function*/constructor(state, stateLocale, rules, handleHtmlCallback, delay, alternativeGenerator) {const { offset, iteratable_url } = rules.URL_DATA();Object.assign(this, { state, stateLocale, rules, handleHtmlCallback, delay });Object.assign(this.stateLocale, { pagIndexLast: rules.PAGINATION_LAST, pagIndexCur: offset });this.paginationGenerator = alternativeGenerator?.() ??PaginationManager.createPaginationGenerator(offset, rules.PAGINATION_LAST, iteratable_url);this.createPaginationObserver();}createPaginationObserver() {const observable = this.rules.INTERSECTION_OBSERVABLE || this.rules.PAGINATION;unsafeWindow.bhutils.Observer.observeWhile(observable, this.generatorConsumer, this.delay);}generatorConsumer = async () => {if (!this.state.infiniteScrollEnabled) return;const { value: { url, offset } = {}, done } = await this.paginationGenerator.next();if (!done) {console.log(url);const nextPageHTML = await unsafeWindow.bhutils.fetchHtml(url);const prevScrollPos = document.documentElement.scrollTop;this.handleHtmlCallback(nextPageHTML);this.stateLocale.pagIndexCur = offset;window.scrollTo(0, prevScrollPos);}return !done;}static * createPaginationGenerator(currentPage, totalPages, generateURL) {for (let p = currentPage + 1; p <= totalPages; p++) {const url = generateURL(p);yield { url, offset: p };}}}