// ==UserScript==
// @name         Cambridge Dictionary Quick Link (Icon + Shortcut)
// @namespace    http://tampermonkey.net/
// @version      1.4
// @description  Double click to show icon; Alt+Double click to go directly to Cambridge Dictionary (English-Chinese Traditional).
// @author       Gemini
// @match        *://*/*
// @grant        none
// @downloadURL https://update.greasyfork.icu/scripts/558477/Cambridge%20Dictionary%20Quick%20Link%20%28Icon%20%2B%20Shortcut%29.user.js
// @updateURL https://update.greasyfork.icu/scripts/558477/Cambridge%20Dictionary%20Quick%20Link%20%28Icon%20%2B%20Shortcut%29.meta.js
// ==/UserScript==

(function() {
    'use strict';

    const ICON_ID = 'cambridge-quick-link-icon-final';
    // 使用 Google Favicon 服務獲取劍橋詞典的高畫質圖示
    // Use Google Favicon service to get the high-quality Cambridge Dictionary icon
    const ICON_URL = 'https://www.google.com/s2/favicons?domain=dictionary.cambridge.org&sz=64';

    function removeIcon() {
        const existingIcon = document.getElementById(ICON_ID);
        if (existingIcon) {
            existingIcon.remove();
        }
    }

    // 點擊其他地方時移除圖示
    // Remove icon when clicking elsewhere
    document.addEventListener('mousedown', function(e) {
        const icon = document.getElementById(ICON_ID);
        // 如果點擊的不是圖示本身，就將其移除
        // If the click is not on the icon itself, remove it
        if (icon && !icon.contains(e.target)) {
            removeIcon();
        }
    });

    document.addEventListener('dblclick', function(e) {
        let selectedText = window.getSelection().toString().trim();

        // 檢查是否為英文
        // Check if it is English
        if (selectedText && /^[a-zA-Z-]+$/.test(selectedText)) {

            // --- 新增功能：如果按住了 Alt 鍵 (New Feature: If Alt key is held down) ---
            if (e.altKey) {
                // 直接打開網址，不顯示圖示
                // Open URL directly, do not show icon
                const directUrl = `https://dictionary.cambridge.org/dictionary/english-chinese-traditional/${selectedText}`;
                window.open(directUrl, '_blank');
                return; // 結束函式，不再執行下方的顯示圖示代碼 End function, skip showing icon below
            }

            // --- 原有功能：顯示圖示 (Original Feature: Show Icon) ---

            removeIcon();

            const link = document.createElement('a');
            link.id = ICON_ID;
            link.href = `https://dictionary.cambridge.org/dictionary/english-chinese-traditional/${selectedText}`;
            link.target = '_blank';

            const img = document.createElement('img');
            img.src = ICON_URL;
            img.alt = 'Dict';

            // 樣式設定
            // Style settings
            Object.assign(img.style, {
                width: '24px',
                height: '24px',
                display: 'block',
                borderRadius: '4px'
            });

            link.appendChild(img);

            Object.assign(link.style, {
                position: 'absolute',
                left: `${e.pageX + 8}px`,
                top: `${e.pageY + 8}px`,
                zIndex: '2147483647',
                cursor: 'pointer',
                textDecoration: 'none',
                border: 'none',
                outline: 'none',
                backgroundColor: '#fff',
                padding: '2px',
                borderRadius: '5px',
                boxShadow: '0 2px 5px rgba(0,0,0,0.3)',
                display: 'flex',
                alignItems: 'center',
                justifyContent: 'center'
            });

            document.body.appendChild(link);
        }
    });
})();