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import { useState, useEffect, useRef, memo } from 'react';
import ReactMarkdown from 'react-markdown';
import remarkGfm from 'remark-gfm';
import Stage1 from './Stage1';
import Stage2 from './Stage2';
import Stage3 from './Stage3';
import './ChatInterface.css';
const remarkPlugins = [remarkGfm];
// Only memoize user messages (they never change once sent)
const UserMessage = memo(function UserMessage({ content }) {
return (
<div className="message-group">
<div className="user-message">
<div className="message-label">You</div>
<div className="message-content">
<div className="markdown-content">
<ReactMarkdown remarkPlugins={remarkPlugins}>{content}</ReactMarkdown>
</div>
</div>
</div>
</div>
);
});
// Memoize completed assistant messages, but skip memo for the active (last) one
const AssistantMessage = memo(function AssistantMessage({ msg, isActive }) {
return (
<div className="message-group">
<div className="assistant-message">
<div className="message-label">LLM Council</div>
{/* Stage 1 */}
{msg.loading?.stage1 && (
<div className="stage-loading">
<div className="spinner"></div>
<span>Running Stage 1: Collecting individual responses...</span>
</div>
)}
{msg.stage1 && <Stage1 responses={msg.stage1} />}
{/* Stage 2 */}
{msg.loading?.stage2 && (
<div className="stage-loading">
<div className="spinner"></div>
<span>Running Stage 2: Peer rankings...</span>
</div>
)}
{msg.stage2 && (
<Stage2
rankings={msg.stage2}
labelToModel={msg.metadata?.label_to_model}
aggregateRankings={msg.metadata?.aggregate_rankings}
/>
)}
{/* Stage 3 */}
{msg.loading?.stage3 && (
<div className="stage-loading">
<div className="spinner"></div>
<span>Running Stage 3: Final synthesis...</span>
</div>
)}
{msg.stage3 && <Stage3 finalResponse={msg.stage3} />}
</div>
</div>
);
}, (prevProps, nextProps) => {
// If active (streaming), always re-render
if (prevProps.isActive || nextProps.isActive) return false;
// Otherwise skip re-render (completed messages don't change)
return true;
});
export default function ChatInterface({
conversation,
onSendMessage,
onStopGeneration,
isLoading,
pendingInput,
onPendingInputConsumed,
}) {
const [input, setInput] = useState('');
const textareaRef = useRef(null);
const messagesEndRef = useRef(null);
useEffect(() => {
messagesEndRef.current?.scrollIntoView({ behavior: 'smooth' });
}, [conversation, isLoading]);
// Recover input from stopped generation
useEffect(() => {
if (pendingInput !== null) {
setInput(pendingInput);
onPendingInputConsumed();
setTimeout(() => textareaRef.current?.focus(), 0);
}
}, [pendingInput]);
const handleSubmit = (e) => {
e.preventDefault();
if (input.trim() && !isLoading) {
onSendMessage(input);
setInput('');
}
};
const handleKeyDown = (e) => {
if (e.key === 'Enter' && !e.shiftKey) {
e.preventDefault();
handleSubmit(e);
}
};
if (!conversation) {
return (
<div className="chat-interface">
<div className="empty-state">
<h2>Welcome to LLM Council</h2>
<p>Create a new conversation to get started</p>
</div>
</div>
);
}
return (
<div className="chat-interface">
<div className="messages-container">
{conversation.messages.length === 0 ? (
<div className="empty-state">
<h2>Start a conversation</h2>
<p>Ask a question to consult the LLM Council</p>
</div>
) : (
conversation.messages.map((msg, index) => {
if (msg.role === 'user') {
return <UserMessage key={index} content={msg.content} />;
}
const isLastAssistant = isLoading && index === conversation.messages.length - 1;
return <AssistantMessage key={index} msg={msg} isActive={isLastAssistant} />;
})
)}
{isLoading && (
<div className="loading-indicator">
<div className="spinner"></div>
<span>Consulting the council...</span>
</div>
)}
<div ref={messagesEndRef} />
</div>
<form className="input-form" onSubmit={handleSubmit}>
<textarea
ref={textareaRef}
className="message-input"
placeholder="Ask your question... (Shift+Enter for new line, Enter to send)"
value={input}
onChange={(e) => setInput(e.target.value)}
onKeyDown={handleKeyDown}
disabled={isLoading}
rows={3}
/>
{isLoading ? (
<button
type="button"
className="stop-button"
onClick={onStopGeneration}
>
Stop
</button>
) : (
<button
type="submit"
className="send-button"
disabled={!input.trim()}
>
Send
</button>
)}
</form>
</div>
);
}
|
