// ==UserScript==
// @name        aliexpress copy link
// @namespace   none
// @description add a copy clean link button
// @include     https://www.aliexpress.com/item/*
// @version     2
// @run-at        document-idle
// @grant        GM_setClipboard
// @grant        GM_addStyle
// ==/UserScript==
var container = document.body.getElementsByClassName("product-action-main")[0];
var copy_button = document.createElement("a");
copy_button.className = "copy_button product_action_main";
var html_index = window.location.href.indexOf(".html")
var clean_url = "https://www.aliexpress.com/item/a/" + window.location.href.substring(html_index - 11, html_index) + ".html"
copy_button.onclick = function () { 
  GM_setClipboard(clean_url); 
};
GM_addStyle(".copy_button::before { content: 'Copy';} .copy_button:hover, .copy_button {background-color: #e9003a; color: #fff; padding: 0 30px; margin: 0 5px 5px 0; vertical-align: baseline };")
copy_button.href = "javascript:;"
container.appendChild(copy_button);