Beanfun QR Code Click-to-Copy

在 beanfun! QR Code 登入頁面，點擊 QR Code 圖片時，自動複製其連結到剪貼簿。
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// ==UserScript==
// @name         Beanfun QR Code Click-to-Copy
// @namespace    http://tampermonkey.net/
// @version      0.7.1
// @description  在 beanfun! QR Code 登入頁面，點擊 QR Code 圖片時，自動複製其連結到剪貼簿。
// @author       eunalice (Generated by Gemini 2.5 Pro)
// @match        *://*.beanfun.com/loginform.aspx*
// @match        *://tw.newlogin.beanfun.com/loginform.aspx*
// @grant        GM_setClipboard
// @grant        GM_addStyle
// @run-at       document-end
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';

    const IFRAME_ID = 'ifmForm8';
    const QR_CODE_IMAGE_SELECTOR = '#theQrCodeImg';
    const PREFIX_TO_REMOVE = 'https://tw.newlogin.beanfun.com/qrhandler.ashx?u=';
    const NOTIFICATION_ID = 'gm-qr-copy-notify';
    const LISTENER_ADDED_FLAG = 'gm_qr_listener_added';

    GM_addStyle(`
        #${NOTIFICATION_ID} {
            position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
            background-color: rgba(0, 0, 0, 0.8); color: white; padding: 10px 20px;
            border-radius: 5px; z-index: 10000; font-size: 14px;
            opacity: 0; transition: opacity 0.5s ease-in-out; pointer-events: none;
        }
        #${NOTIFICATION_ID}.visible { opacity: 1; }
    `);

    function showNotification(message, duration = 3000) {
        let notify = document.getElementById(NOTIFICATION_ID);
        if (!notify) {
            notify = document.createElement('div');
            notify.id = NOTIFICATION_ID;
            document.body.appendChild(notify);
        }
        notify.textContent = message;
        notify.offsetHeight;
        notify.classList.add('visible');
        if (notify.timer) clearTimeout(notify.timer);
        notify.timer = setTimeout(() => {
            notify.classList.remove('visible');
        }, duration);
    }

     function setupClickListener(targetIframe) {
         try {
             setTimeout(() => {
                 const iframeDoc = targetIframe.contentDocument || targetIframe.contentWindow?.document;
                 if (!iframeDoc) {
                     return;
                 }

                 const qrImageElement = iframeDoc.querySelector(QR_CODE_IMAGE_SELECTOR);

                 if (qrImageElement) {
                     if (qrImageElement.dataset[LISTENER_ADDED_FLAG]) {
                         return;
                     }

                     qrImageElement.style.cursor = 'pointer';
                     qrImageElement.title = '點擊以複製鏈結';

                     qrImageElement.addEventListener('click', (event) => {
                         event.preventDefault();
                         event.stopPropagation();
                         event.stopImmediatePropagation();

                         let qrUrl = qrImageElement.src || qrImageElement.dataset.url;

                         if (qrUrl && String(qrUrl).trim()) {
                             let originalUrl = String(qrUrl).trim();
                             let finalValueToCopy = originalUrl;

                              if (PREFIX_TO_REMOVE && originalUrl.startsWith(PREFIX_TO_REMOVE)) {
                                  finalValueToCopy = originalUrl.substring(PREFIX_TO_REMOVE.length);
                              }

                             GM_setClipboard(finalValueToCopy);
                             showNotification('已複製鏈結！');

                         } else {
                             showNotification('錯誤：無法從圖片獲取有效資料');
                         }
                     }, true);

                     qrImageElement.dataset[LISTENER_ADDED_FLAG] = 'true';

                 }
             }, 250);

         } catch (e) {
             if (e.name === 'SecurityError') {
                 showNotification('錯誤：無法設定點擊事件 (安全性限制)');
             } else {
                 showNotification('設定點擊事件時發生錯誤');
             }
         }
     }

    const checkInterval = setInterval(() => {
        const targetIframe = document.getElementById(IFRAME_ID);
        if (targetIframe) {
            clearInterval(checkInterval);
            targetIframe.addEventListener('load', () => setupClickListener(targetIframe));
             setupClickListener(targetIframe);
        }
    }, 500);

    setTimeout(() => {
        clearInterval(checkInterval);
    }, 15000);

})();