// ==UserScript==
// @name         车牌标注-阿拉伯字符
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  拖拽和复制都正常工作
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const chars = [
        '٠', '١', '٢', '٣', '٤', '٥', '٦', '٧', '٨', '٩',
        'ا', 'ب', 'ت', 'ث', 'ج', 'ح', 'خ', 'د', 'ذ', 'ر', 
        'ز', 'س', 'ش', 'ص', 'ض', 'ط', 'ظ', 'ع', 'غ', 'ف', 
        'ق', 'ك', 'ل', 'م', 'ن', 'هـ', 'و', 'ي'
    ];

    const panel = document.createElement('div');
    panel.id = 'eg-plate-helper';
    panel.innerHTML = `
        <div id="eg-plate-header">
            <span>🇪🇬 阿拉伯字符 (点击复制)</span>
            <span id="eg-plate-toggle">—</span>
        </div>
        <div id="eg-plate-body"></div>
    `;

    const style = document.createElement('style');
    style.textContent = `
        #eg-plate-helper {
            position: fixed !important;
            top: 50px !important;
            left: 100px !important;
            width: 280px !important;
            background: #ffffff !important;
            border: 1px solid #e0e0e0 !important;
            border-radius: 8px !important;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2) !important;
            z-index: 2147483647 !important;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !important;
            overflow: hidden !important;
            user-select: none !important;
            pointer-events: auto !important;
            will-change: transform !important;
        }
        #eg-plate-header {
            display: flex !important;
            justify-content: space-between !important;
            align-items: center !important;
            padding: 8px 12px !important;
            background: #2563eb !important;
            color: white !important;
            font-size: 13px !important;
            font-weight: bold !important;
            cursor: move !important;
        }
        #eg-plate-toggle {
            cursor: pointer !important;
            padding: 0 4px !important;
            font-size: 16px !important;
            line-height: 1 !important;
            pointer-events: auto !important;
        }
        #eg-plate-toggle:hover {
            opacity: 0.8 !important;
        }
        #eg-plate-body {
            display: flex !important;
            flex-wrap: wrap !important;
            padding: 8px !important;
            gap: 6px !important;
            max-height: 400px !important;
            overflow-y: auto !important;
            background: white !important;
            pointer-events: auto !important;
        }
        #eg-plate-body.hidden {
            display: none !important;
        }
        .eg-char-btn {
            width: 40px !important;
            height: 40px !important;
            display: flex !important;
            align-items: center !important;
            justify-content: center !important;
            font-size: 20px !important;
            background: #f8f9fa !important;
            border: 1px solid #dee2e6 !important;
            border-radius: 6px !important;
            cursor: pointer !important;
            transition: all 0.15s ease !important;
            color: black !important;
            user-select: none !important;
            pointer-events: auto !important;
        }
        .eg-char-btn:hover {
            background: #eff6ff !important;
            border-color: #2563eb !important;
            color: #2563eb !important;
            transform: translateY(-2px) !important;
        }
        .eg-char-btn:active {
            transform: translateY(0) !important;
        }
        .eg-copy-toast {
            position: fixed !important;
            top: 20px !important;
            left: 50% !important;
            transform: translateX(-50%) translateY(-20px) !important;
            background: #10b981 !important;
            color: white !important;
            padding: 6px 16px !important;
            border-radius: 4px !important;
            font-size: 14px !important;
            z-index: 2147483648 !important;
            opacity: 0 !important;
            transition: all 0.3s ease !important;
            pointer-events: none !important;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !important;
            white-space: nowrap !important;
        }
        .eg-copy-toast.show {
            opacity: 1 !important;
            transform: translateX(-50%) translateY(0) !important;
        }
    `;
    document.head.appendChild(style);
    document.body.appendChild(panel);

    const bodyEl = document.getElementById('eg-plate-body');
    chars.forEach(char => {
        const btn = document.createElement('div');
        btn.className = 'eg-char-btn';
        btn.textContent = char;
        btn.setAttribute('data-char', char);
        btn.onclick = (e) => {
            e.stopPropagation();
            e.preventDefault();
            const text = e.currentTarget.getAttribute('data-char');
            copyChar(text);
        };
        bodyEl.appendChild(btn);
    });

    const toggleBtn = document.getElementById('eg-plate-toggle');
    toggleBtn.onclick = (e) => {
        e.stopPropagation();
        if (bodyEl.classList.contains('hidden')) {
            bodyEl.classList.remove('hidden');
            toggleBtn.textContent = '—';
        } else {
            bodyEl.classList.add('hidden');
            toggleBtn.textContent = '+';
        }
    };

    // 复制函数 - 确保使用正确的 text
    async function copyChar(text) {
        console.log('复制:', text);
        try {
            await navigator.clipboard.writeText(text);
            showToast(`已复制: ${text}`);
        } catch (err) {
            // 降级方案
            const textarea = document.createElement('textarea');
            textarea.value = text;
            textarea.style.position = 'fixed';
            textarea.style.left = '-9999px';
            textarea.style.top = '-9999px';
            textarea.style.opacity = '0';
            document.body.appendChild(textarea);
            textarea.select();
            textarea.setSelectionRange(0, textarea.value.length);
            try {
                const success = document.execCommand('copy');
                if (success) {
                    showToast(`已复制: ${text}`);
                } else {
                    showToast(`复制失败，请手动复制`);
                }
            } catch (e) {
                showToast(`复制失败，请手动复制`);
            }
            document.body.removeChild(textarea);
        }
    }

    let toastTimeout;
    function showToast(msg) {
        let toast = document.querySelector('.eg-copy-toast');
        if (!toast) {
            toast = document.createElement('div');
            toast.className = 'eg-copy-toast';
            document.body.appendChild(toast);
        }
        toast.textContent = msg;
        toast.classList.add('show');
        clearTimeout(toastTimeout);
        toastTimeout = setTimeout(() => toast.classList.remove('show'), 1200);
    }

    // ========== 拖拽功能（不影响点击） ==========
    let isDragging = false;
    let dragStartX = 0, dragStartY = 0;
    let currentTranslateX = 0, currentTranslateY = 0;
    let initialTranslateX = 0, initialTranslateY = 0;
    let hasMoved = false;
    const header = document.getElementById('eg-plate-header');

    function getCurrentTransform() {
        const transform = window.getComputedStyle(panel).transform;
        if (transform === 'none') {
            return { x: 0, y: 0 };
        }
        const matrix = transform.match(/matrix\(([^)]+)\)/);
        if (matrix) {
            const values = matrix[1].split(', ');
            return { x: parseFloat(values[4]) || 0, y: parseFloat(values[5]) || 0 };
        }
        return { x: 0, y: 0 };
    }

    function onMouseMove(e) {
        if (!isDragging) return;
        
        e.preventDefault();
        
        const dx = e.clientX - dragStartX;
        const dy = e.clientY - dragStartY;
        
        currentTranslateX = initialTranslateX + dx;
        currentTranslateY = initialTranslateY + dy;
        
        panel.style.transform = `translate(${currentTranslateX}px, ${currentTranslateY}px)`;
        panel.style.top = 'auto';
        panel.style.left = 'auto';
        panel.style.right = 'auto';
        panel.style.bottom = 'auto';
        
        hasMoved = true;
    }

    function onMouseUp() {
        if (!isDragging) return;
        isDragging = false;
        document.removeEventListener('mousemove', onMouseMove);
        document.removeEventListener('mouseup', onMouseUp);
        document.body.style.userSelect = '';
        
        // 延迟重置，避免拖拽后立即触发点击
        setTimeout(() => { hasMoved = false; }, 10);
    }

    function onMouseDown(e) {
        // 如果点击的是 toggle 按钮，不拖拽
        if (e.target === toggleBtn || toggleBtn.contains(e.target)) {
            return;
        }
        
        e.preventDefault();
        
        isDragging = true;
        hasMoved = false;
        dragStartX = e.clientX;
        dragStartY = e.clientY;
        
        const transform = getCurrentTransform();
        initialTranslateX = transform.x;
        initialTranslateY = transform.y;
        
        document.body.style.userSelect = 'none';
        document.addEventListener('mousemove', onMouseMove);
        document.addEventListener('mouseup', onMouseUp);
    }

    header.addEventListener('mousedown', onMouseDown);
    
    // 确保按钮点击不会被拖拽干扰
    panel.addEventListener('click', (e) => {
        if (hasMoved) {
            e.stopPropagation();
        }
    });

})();