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UTILS_FETCH Library

fetch library

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.greatest.deepsurf.us/scripts/528458/1549749/UTILS_FETCH%20Library.js 

  1. // ==UserScript==
  2. // @name         UTILS_FETCH Library
  3. // @namespace    dannysaurus.epik
  4. // @version      1.1
  5. // @description  fetch library
  6. //
  7. // @license      MIT
  8. // @grant        GM_xmlhttpRequest
  9. // @grant        GM.getValue
  10. // @grant        GM.setValue
  11. // @grant        unsafeWindow
  12. // ==/UserScript==
  13.  
  14. /* jslint esversion: 11 */
  15. /* global unsafeWindow */
  16. (() => {
  17.     'use strict';
  18.     unsafeWindow.dannysaurus_epik ??= {};
  19.     unsafeWindow.dannysaurus_epik.libraries ??= {};
  20.  
  21.     unsafeWindow.dannysaurus_epik.libraries.UTILS_FETCH = (() => {
  22.  
  23.         /**
  24.          * General fetch method using GM_xmlhttpRequest.
  25.          * 
  26.          * @param {string} url - The URL to fetch the data from.
  27.          * @param {string} [method='GET'] - The HTTP method to use for the request.
  28.          * @returns {Promise<Response>} The fetched response.
  29.          * @throws {Error} If there is an error fetching the data.
  30.          */
  31.         const fetch = async (url, method = 'GET') => {
  32.             return new Promise((resolve, reject) => GM_xmlhttpRequest({
  33.                 method: method,
  34.                 url: url,
  35.                 onload: (response) => {
  36.                     if (response.status >= 200 && response.status < 300) {
  37.                         resolve(response);
  38.                     } else {
  39.                         console.error('HTTP error! status:', response.status);
  40.                         reject(new Error(`HTTP error! status: ${response.status}`));
  41.                     }
  42.                 },
  43.                 onerror: (error) => {
  44.                     console.error('Request error:', error);
  45.                     reject(error);
  46.                 }
  47.             }));
  48.         };
  49.  
  50.         /**
  51.          * Fetches JSON data from the specified URL.
  52.          * 
  53.          * @param {string} url - The URL to fetch the JSON data from.
  54.          * @param {string} [method='GET'] - The HTTP method to use for the request.
  55.          * @returns {Promise<Object>} The fetched JSON data.
  56.          * @throws {Error} If there is an error fetching or parsing the JSON data.
  57.          */
  58.         const fetchJSON = async (url, method = 'GET') => {
  59.             const response = await fetch(url, method);
  60.             try {
  61.                 return JSON.parse(response.responseText);
  62.             } catch (error) {
  63.                 console.error('Error parsing JSON:', error);
  64.                 throw error;
  65.             }
  66.         };
  67.  
  68.         /**
  69.          * Fetches the names of accepted users from the users - JSON.
  70.          * 
  71.          * @param {Object} options
  72.          * @param {string} [options.url] - The URL to fetch the JSON data from.
  73.          * @param {string} [options.localStorageId] - The ID to store the fetched JSON data in the local storage.
  74.          * @param {number} [options.delayMs] - The delay in milliseconds to wait before fetching the data again.
  75.          * 
  76.          * @returns {Promise<Object>} fetched JSON data.
  77.          */
  78.         const fetchJsonWithStorageCache = (() => {
  79.             const cacheByUrl = {};
  80.  
  81.             return async ({ url, localStorageId, delayMs } = {}) => {
  82.                 localStorageId = localStorageId.replace(/\s/g, '');
  83.                 const cache = cacheByUrl[url] ??= {
  84.                     jsonData: null,
  85.                     timestamp: 0,
  86.                 };
  87.                 let fetchedJsonData = null;
  88.  
  89.                 if (cache.jsonData === null || Date.now() - cache.timestamp >= delayMs) {
  90.                     try {
  91.                         fetchedJsonData = await fetchJSON(url);
  92.  
  93.                         const propertyNamesCached = Object.keys(cache.jsonData || {});
  94.                         const propertyNamesFetched = Object.keys(fetchedJsonData || {});
  95.  
  96.                         if (propertyNamesCached.length !== propertyNamesFetched.length
  97.                             || propertyNamesCached.some(propName => propertyNamesCached[propName] !== propertyNamesFetched[propName])
  98.                         ) {
  99.                             try {
  100.                                 await GM.setValue(localStorageId, fetchedJsonData);
  101.                             } catch (storageError) {
  102.                                 console.error(`Error saving json data to local storage:`, storageError);
  103.                             }
  104.                         }
  105.                     } catch (error) {
  106.                         try {
  107.                             fetchedJsonData = await GM.getValue(localStorageId, null);
  108.                         } catch (storageError) {
  109.                             console.error(`Error loading ${localStorageId} from local storage:`, storageError);
  110.                         }
  111.                     }
  112.  
  113.  
  114.                     if (fetchedJsonData) {
  115.                         cache.jsonData = fetchedJsonData;
  116.                     }
  117.                     cache.timestamp = Date.now();
  118.                 }
  119.  
  120.                 return cache.jsonData || {};
  121.             };
  122.         })();
  123.  
  124.         return {
  125.             fetch,
  126.             fetchJSON,
  127.             fetchJsonWithStorageCache,
  128.         };
  129.     })();
  130. })();