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Pandabuy Redirector

Redirects Weidian and Taobao links to Pandabuy

  1. // ==UserScript==
  2. // @name         Pandabuy Redirector
  3. // @namespace    http://tampermonkey
  4. // @version      3.1
  5. // @description  Redirects Weidian and Taobao links to Pandabuy
  6. // @match        *://*/*
  7. // @grant        none
  8. // @license MIT
  9. // ==/UserScript==
  10.  
  11. (function () {
  12.   "use strict";
  13.   // Define constants for Pandabuy, Weidian, and Taobao domains
  14.   const pandabuyDomain = "pandabuy.com";
  15.   const weidianDomain = "weidian.com";
  16.   const taobaoDomain = "taobao.com";
  17.  
  18.   // Function to check if a link matches Pandabuy, Weidian, or Taobao domains
  19.   function checkLink(link) {
  20.     if (
  21.       link.href.includes(pandabuyDomain) ||
  22.       link.href.includes(weidianDomain) ||
  23.       link.href.includes(taobaoDomain)
  24.     ) {
  25.       link.addEventListener("click", function (event) {
  26.         event.preventDefault();
  27.         // If the link is not on Pandabuy, redirect to Pandabuy
  28.         if (!link.href.includes(pandabuyDomain)) {
  29.           // If the link is a Weidian link with a userid parameter, construct a new URL with the Pandabuy shop detail page and userid as a parameter
  30.           if (
  31.             link.href.includes(weidianDomain) &&
  32.             link.href.includes("userid")
  33.           ) {
  34.             const userid = link.href.match(/userid=(\d+)/)[1];
  35.             const newUrl =
  36.               "https://www.pandabuy.com/shopdetail?t=wd&id=" +
  37.               encodeURIComponent(userid);
  38.             const newLink = document.createElement("a");
  39.             newLink.href = newUrl;
  40.             newLink.target = "_blank";
  41.             newLink.click();
  42.           }
  43.           // If the link is a Taobao link with a subdomain, check if it's "item" and redirect to the usual product page if it is, otherwise construct a new URL with the Pandabuy shop detail page and subdomain as a parameter
  44.           else if (
  45.             link.href.includes(taobaoDomain) &&
  46.             link.href.includes("://") &&
  47.             link.href.includes(".")
  48.           ) {
  49.             const subdomain = link.href.match(/\/\/(.+?)\./)[1];
  50.             if (subdomain === "item" || subdomain === "m") {
  51.               const newUrl =
  52.                 "https://www.pandabuy.com/product?url=" +
  53.                 encodeURIComponent(link.href);
  54.               const newLink = document.createElement("a");
  55.               newLink.href = newUrl;
  56.               newLink.target = "_blank";
  57.               newLink.click();
  58.             } else {
  59.               const newUrl =
  60.                 "https://www.pandabuy.com/shopdetail?t=taobao&id=" +
  61.                 encodeURIComponent(subdomain);
  62.               const newLink = document.createElement("a");
  63.               newLink.href = newUrl;
  64.               newLink.target = "_blank";
  65.               newLink.click();
  66.             }
  67.           }
  68.           // If the link is not a Weidian or Taobao link, construct a new URL with the Pandabuy product page and the original link as a parameter
  69.           else {
  70.             const newUrl =
  71.               "https://www.pandabuy.com/product?url=" +
  72.               encodeURIComponent(link.href);
  73.             const newLink = document.createElement("a");
  74.             newLink.href = newUrl;
  75.             newLink.target = "_blank";
  76.             newLink.click();
  77.           }
  78.         }
  79.       });
  80.     }
  81.   }
  82.   // Check if user is on pandabuy.com, weidian.com, or taobao.com before applying the link conversion script
  83.   if (
  84.     !window.location.href.includes(pandabuyDomain) &&
  85.     !window.location.href.includes(weidianDomain) &&
  86.     !window.location.href.includes(taobaoDomain)
  87.   ) {
  88.     // Check existing links on page load
  89.     const links = document.getElementsByTagName("a");
  90.     for (let i = 0; i < links.length; i++) {
  91.       checkLink(links[i]);
  92.     }
  93.     // Observe for changes in the DOM and check new links
  94.     const observer = new MutationObserver(function (mutationsList, observer) {
  95.       for (let mutation of mutationsList) {
  96.         if (mutation.type === "childList") {
  97.           for (let addedNode of mutation.addedNodes) {
  98.             if (addedNode.nodeType === 1) {
  99.               if (addedNode.tagName === "A") {
  100.                 checkLink(addedNode);
  101.               }
  102.               // Check links in any new nodes that are added to the DOM
  103.               else {
  104.                 const containerLinks = addedNode.getElementsByTagName("a");
  105.                 for (let j = 0; j < containerLinks.length; j++) {
  106.                   checkLink(containerLinks[j]);
  107.                 }
  108.               }
  109.             }
  110.           }
  111.         }
  112.       }
  113.     });
  114.     observer.observe(document.documentElement, {
  115.       childList: true,
  116.       subtree: true,
  117.     });
  118.   }
  119. })();