// ==UserScript==
// @name         OMG樂 set 開單 (URL 參數版)
// @namespace    http://tampermonkey.net/
// @version      4.3
// @description  改用 URL 參數傳遞資料，穩定可靠
// @author       You
// @match        https://chat.line.biz/U0464a5acec0be5006855b67b673ad26b*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=line.biz
// @grant        unsafeWindow
// ==/UserScript==


(function() {
    'use strict';
    
    // 設定樣式
    const style = document.createElement('style');
    style.innerHTML = '.text-break-all.user-select-text { cursor: pointer; border-bottom: 1px dashed #ccc; }';
    document.head.appendChild(style);

    // 監聽點擊複製事件
    document.addEventListener('click', async ({ target: t }) => {
        if (t.classList?.contains('text-break-all') && t.classList?.contains('user-select-text')) {
            const original = t.innerText;
            await navigator.clipboard.writeText(original);
            t.innerText = '✅ 已複製！';
            t.style.color = '#28a745';
            setTimeout(() => {
                t.innerText = original;
                t.style.color = '';
            }, 100);
        }
    });

    /**
     * 核心邏輯：提取數量
     */
    function extractQuantity(message) {
        const msg = message.replace(/\s+/g, ''); // 移除空白便於分析

        // --- 階段 1: 優先處理固定模式 (3+1, 5+1 等加贈模式) ---
        const priorityPatterns = {
            '3+1': '4000', '5+1': '6000', '7+1': '8000',
            '9+1': '10000', '4+1': '5000'
        };
        for (const pattern in priorityPatterns) {
            if (msg.includes(pattern)) {
                return priorityPatterns[pattern];
            }
        }

        // --- 階段 2: 處理帶有 "萬" 單位的模式 ---
        if (msg.includes('萬')) {
            const chineseNumMap = {
                '一': 1, '二': 2, '兩': 2, '三': 3, '四': 4,
                '五': 5, '六': 6, '七': 7, '八': 8, '九': 9, '十': 10
            };

            const regexMatch = msg.match(/(\d+)\s*萬/);
            if (regexMatch && regexMatch[1]) {
                return (parseInt(regexMatch[1], 10) * 10000).toString();
            }

            for (const char in chineseNumMap) {
                if (msg.includes(char + '萬')) {
                    return (chineseNumMap[char] * 10000).toString();
                }
            }
        }

        // --- 階段 3: 處理獨立的中文字眼 (視為千單位) ---
        const chineseNumPatterns = {
            '一': '1000', '二': '2000', '兩': '2000', '三': '3000',
            '四': '4000', '五': '5000', '六': '6000', '七': '7000',
            '八': '8000', '九': '9000'
        };
        for (const pattern in chineseNumPatterns) {
            if (msg.includes(pattern)) {
                return chineseNumPatterns[pattern];
            }
        }

        // --- 階段 4: 純數字規則 ---
        const digitsOnly = msg.replace(/[^\d]/g, '');
        if (digitsOnly) {
            const parsedNum = parseInt(digitsOnly, 10);
            if (parsedNum >= 10 && parsedNum <= 800) {
                return '10000';
            }
            if (digitsOnly.length === 1) {
                return digitsOnly + '000';
            }
            return digitsOnly;
        }

        return ''; // 若無匹配則回傳空
    }

    /**
     * 按鍵觸發的主要函數
     */
    function keyFunction(event) {
        if (event.key === 'F2' || event.keyCode === 113) {
            // 抓取 itemId
            const elements = document.getElementsByClassName('mb-0 text-truncate');
            const idElement = elements[elements.length - 1];

            if (!idElement) {
                console.error("錯誤：找不到包含商品 ID 的元素。");
                return;
            }

            let itemId = '';
            const itemIdStart = idElement.innerText.indexOf('/ss');
            if (itemIdStart !== -1) {
                itemId = idElement.innerText.substring(itemIdStart + 1).trim();
            }

            // 抓取最後一條對話
            const chatItems = document.getElementsByClassName('chat-item-text user-select-text');
            let quantity = '';
            if (chatItems.length > 0) {
                const lastMessage = chatItems[chatItems.length - 1].innerText;
                quantity = extractQuantity(lastMessage);
                console.log(`分析: "${lastMessage}" -> 提取數量: ${quantity}`);
            }

            // --- 修改後的執行判斷 ---
            // 只要 itemId 存在就跳轉，不讓 quantity 缺失成為阻礙
            if (itemId !== '') {
                const targetUrl = `https://trade.omg.com.tw/Product/SellAdd?itemId=${encodeURIComponent(itemId)}&quantity=${encodeURIComponent(quantity)}`;
                const windowFeatures = `height=500,width=360`;

                window.open(targetUrl, '_blank', windowFeatures);

                // 更新頁面上的顯示狀態
                const checkboxElement = document.querySelector('.CM-checkbox');
                if (checkboxElement) {
                    checkboxElement.innerText = `ID:${itemId} QTY:${quantity || '(待手動)'}`;
                }
            } else {
                console.warn("⚠️ 商品 ID 抓取失敗，無法跳轉。");
            }
        }
    }

    document.addEventListener('keydown', keyFunction);

})();