nanocode/ai-chatbot-service/templates/index.html

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>AI 客服系统</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        
        .chat-container {
            width: 90%;
            max-width: 600px;
            height: 80vh;
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }
        
        .chat-header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 20px;
            text-align: center;
        }
        
        .chat-header h1 {
            font-size: 1.5rem;
            margin-bottom: 5px;
        }
        
        .chat-header p {
            opacity: 0.9;
            font-size: 0.9rem;
        }
        
        .session-id {
            font-size: 0.8rem;
            opacity: 0.7;
            margin-top: 5px;
        }
        
        .chat-messages {
            flex: 1;
            overflow-y: auto;
            padding: 20px;
            background: #f8f9fa;
        }
        
        .message {
            margin-bottom: 15px;
            display: flex;
            align-items: flex-start;
        }
        
        .message.user {
            flex-direction: row-reverse;
        }
        
        .message-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin: 0 10px;
        }
        
        .message.bot .message-avatar {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        }
        
        .message.user .message-avatar {
            background: #28a745;
        }
        
        .message-content {
            max-width: 70%;
            padding: 12px 16px;
            border-radius: 18px;
            word-wrap: break-word;
            line-height: 1.5;
        }
        
        .message.bot .message-content {
            background: white;
            border: 1px solid #e0e0e0;
            color: #333;
        }
        
        .message.user .message-content {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
        }
        
        .chat-input-container {
            padding: 20px;
            background: white;
            border-top: 1px solid #e0e0e0;
        }
        
        .chat-input-wrapper {
            display: flex;
            gap: 10px;
        }
        
        .chat-input {
            flex: 1;
            padding: 12px 20px;
            border: 2px solid #e0e0e0;
            border-radius: 25px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }
        
        .chat-input:focus {
            border-color: #667eea;
        }
        
        .send-btn {
            padding: 12px 24px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 25px;
            cursor: pointer;
            font-size: 1rem;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        
        .send-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
        }
        
        .send-btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }
        
        .typing-indicator {
            display: none;
            padding: 12px 16px;
            background: white;
            border-radius: 18px;
            border: 1px solid #e0e0e0;
        }
        
        .typing-indicator.active {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        
        .typing-indicator span {
            width: 8px;
            height: 8px;
            background: #999;
            border-radius: 50%;
            animation: typing 1.4s infinite;
        }
        
        .typing-indicator span:nth-child(2) {
            animation-delay: 0.2s;
        }
        
        .typing-indicator span:nth-child(3) {
            animation-delay: 0.4s;
        }
        
        @keyframes typing {
            0%, 60%, 100% { transform: translateY(0); }
            30% { transform: translateY(-10px); }
        }
        
        .welcome-message {
            text-align: center;
            color: #666;
            padding: 20px;
            font-size: 0.9rem;
        }
    </style>
</head>
<body>
    <div class="chat-container">
        <div class="chat-header">
            <h1>🤖 AI 客服助手</h1>
            <p>基于 LangChain + LangGraph 构建</p>
            <div class="session-id">会话ID: <span id="sessionId">{{ session_id }}</span></div>
        </div>
        
        <div class="chat-messages" id="chatMessages">
            <div class="welcome-message">
                👋 你好！我是 AI 客服助手，请问有什么可以帮您的？
            </div>
        </div>
        
        <div class="chat-input-container">
            <div class="typing-indicator" id="typingIndicator">
                <span></span>
                <span></span>
                <span></span>
            </div>
            <div class="chat-input-wrapper">
                <input 
                    type="text" 
                    class="chat-input" 
                    id="chatInput" 
                    placeholder="请输入您的问题..."
                    onkeypress="handleKeyPress(event)"
                >
                <button class="send-btn" id="sendBtn" onclick="sendMessage()">
                    发送
                </button>
            </div>
        </div>
    </div>
    
    <script>
        const sessionId = document.getElementById('sessionId').textContent;
        const chatMessages = document.getElementById('chatMessages');
        const chatInput = document.getElementById('chatInput');
        const sendBtn = document.getElementById('sendBtn');
        const typingIndicator = document.getElementById('typingIndicator');
        
        function handleKeyPress(event) {
            if (event.key === 'Enter') {
                sendMessage();
            }
        }
        
        function addMessage(content, isUser) {
            const messageDiv = document.createElement('div');
            messageDiv.className = `message ${isUser ? 'user' : 'bot'}`;
            messageDiv.innerHTML = `
                <div class="message-avatar">${isUser ? '👤' : '🤖'}</div>
                <div class="message-content">${escapeHtml(content)}</div>
            `;
            chatMessages.appendChild(messageDiv);
            chatMessages.scrollTop = chatMessages.scrollHeight;
        }
        
        function showTyping() {
            typingIndicator.classList.add('active');
        }
        
        function hideTyping() {
            typingIndicator.classList.remove('active');
        }
        
        function escapeHtml(text) {
            const div = document.createElement('div');
            div.textContent = text;
            return div.innerHTML;
        }
        
        async function sendMessage() {
            const message = chatInput.value.trim();
            if (!message) return;
            
            // 添加用户消息
            addMessage(message, true);
            chatInput.value = '';
            
            // 显示输入中
            showTyping();
            sendBtn.disabled = true;
            
            try {
                const response = await fetch('/chat', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json'
                    },
                    body: JSON.stringify({
                        message: message,
                        session_id: sessionId
                    })
                });
                
                const data = await response.json();
                hideTyping();
                addMessage(data.response, false);
            } catch (error) {
                hideTyping();
                addMessage('抱歉，服务出现错误，请稍后重试。', false);
                console.error('Error:', error);
            } finally {
                sendBtn.disabled = false;
            }
        }
        
        // 聚焦输入框
        chatInput.focus();
    </script>
</body>
</html>