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import { MessageList } from './MessageList';
import { MessageInput } from './MessageInput';
import type { ChatSession } from './types';
import './ChatInterface.css';
interface ChatInterfaceProps {
className?: string;
onSessionUpdate?: (session: ChatSession) => void;
}
export const ChatInterface: React.FC<ChatInterfaceProps> = ({
className = '',
onSessionUpdate
}) => {
const [messages, setMessages] = useState<ChatSession['messages']>([]);
const [isLoading, setIsLoading] = useState(false);
const [sessionId, setSessionId] = useState<string>('');
const [error, setError] = useState<string | null>(null);
const chatContainerRef = useRef<HTMLDivElement>(null);
// Generate session ID on mount
useEffect(() => {
const newSessionId = `session-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`;
setSessionId(newSessionId);
}, []);
// Auto scroll to bottom when new messages arrive
useEffect(() => {
if (chatContainerRef.current) {
chatContainerRef.current.scrollTop = chatContainerRef.current.scrollHeight;
}
}, [messages]);
const handleSendMessage = async (content: string) => {
if (!content.trim() || isLoading) return;
const userMessage = {
id: `msg-${Date.now()}`,
content,
timestamp: new Date(),
sender: 'user' as const,
type: 'text' as const
};
setMessages(prev => [...prev, userMessage]);
setIsLoading(true);
setError(null);
try {
const response = await fetch('/api/ai/chat/', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'X-CSRFToken': getCsrfToken(),
},
body: JSON.stringify({
query: content,
session_id: sessionId
})
});
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
if (data.error) {
throw new Error(data.error);
}
const aiMessage = {
id: `msg-${Date.now()}-ai`,
content: data.response,
timestamp: new Date(),
sender: 'ai' as const,
type: 'text' as const,
metadata: {
queryType: data.metadata?.query_type,
confidence: data.metadata?.confidence,
sources: data.sources || [],
processingTime: data.metadata?.processing_time
}
};
setMessages(prev => [...prev, aiMessage]);
// Update session if callback provided
if (onSessionUpdate) {
onSessionUpdate({
id: sessionId,
messages: [...messages, userMessage, aiMessage],
createdAt: new Date(),
updatedAt: new Date()
});
}
} catch (err) {
console.error('Chat error:', err);
setError(err instanceof Error ? err.message : 'An error occurred');
// Add error message to chat
const errorMessage = {
id: `msg-${Date.now()}-error`,
content: '抱歉，处理您的问题时出现了问题。请稍后再试。',
timestamp: new Date(),
sender: 'ai' as const,
type: 'error' as const
};
setMessages(prev => [...prev, errorMessage]);
} finally {
setIsLoading(false);
}
};
const handleClearChat = () => {
setMessages([]);
setError(null);
};
const getCsrfToken = (): string => {
const token = document.querySelector('[name=csrfmiddlewaretoken]')?.getAttribute('value');
return token || '';
};
// Full chat interface for desktop sidebar or dedicated chat pages
return (
<div className={`chat-interface ${className}`}>
<div className="chat-header">
<h3>家庭智慧助手</h3>
<p className="chat-subtitle">询问关于家庭记忆、传统和智慧的问题</p>
<button
className="clear-chat-btn"
onClick={handleClearChat}
disabled={messages.length === 0}
>
清空对话
</button>
</div>
{error && (
<div className="error-banner">
<span className="error-icon">⚠️</span>
<span className="error-message">{error}</span>
<button
className="error-dismiss"
onClick={() => setError(null)}
>
×
</button>
</div>
)}
<div
className="chat-container"
ref={chatContainerRef}
>
{messages.length === 0 ? (
<div className="chat-welcome">
<div className="welcome-icon">🏠</div>
<h4>欢迎使用家庭智慧助手</h4>
<p>您可以询问关于家庭故事、传统、健康记录、重要事件等问题。</p>
<div className="example-queries">
<h5>示例问题：</h5>
<button
className="example-query"
onClick={() => handleSendMessage('告诉我一些家庭传统故事')}
>
告诉我一些家庭传统故事
</button>
<button
className="example-query"
onClick={() => handleSendMessage('我们家有哪些重要的庆祝活动？')}
>
我们家有哪些重要的庆祝活动？
</button>
<button
className="example-query"
onClick={() => handleSendMessage('分享一些家族智慧')}
>
分享一些家族智慧
</button>
</div>
</div>
) : (
<MessageList messages={messages} isLoading={isLoading} />
)}
</div>
<MessageInput
onSendMessage={handleSendMessage}
disabled={isLoading}
placeholder="询问关于家庭的问题..."
/>
</div>
);
}; |