SONUM v7 - Évolution v6 (éditeurs/blocs CRUD, tableau de bord stats) + vue liste alternance couleurs
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Manus Agent
335
client/src/components/AIChatBox.tsx
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335
client/src/components/AIChatBox.tsx
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import { Button } from "@/components/ui/button";
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import { Textarea } from "@/components/ui/textarea";
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import { ScrollArea } from "@/components/ui/scroll-area";
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import { cn } from "@/lib/utils";
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import { Loader2, Send, User, Sparkles } from "lucide-react";
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import { useState, useEffect, useRef } from "react";
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import { Streamdown } from "streamdown";
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/**
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* Message type matching server-side LLM Message interface
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*/
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export type Message = {
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role: "system" | "user" | "assistant";
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content: string;
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};
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export type AIChatBoxProps = {
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/**
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* Messages array to display in the chat.
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* Should match the format used by invokeLLM on the server.
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*/
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messages: Message[];
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/**
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* Callback when user sends a message.
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* Typically you'll call a tRPC mutation here to invoke the LLM.
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*/
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onSendMessage: (content: string) => void;
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/**
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* Whether the AI is currently generating a response
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*/
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isLoading?: boolean;
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/**
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* Placeholder text for the input field
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*/
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placeholder?: string;
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/**
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* Custom className for the container
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*/
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className?: string;
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/**
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* Height of the chat box (default: 600px)
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*/
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height?: string | number;
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/**
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* Empty state message to display when no messages
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*/
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emptyStateMessage?: string;
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/**
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* Suggested prompts to display in empty state
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* Click to send directly
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*/
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suggestedPrompts?: string[];
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};
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/**
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* A ready-to-use AI chat box component that integrates with the LLM system.
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*
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* Features:
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* - Matches server-side Message interface for seamless integration
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* - Markdown rendering with Streamdown
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* - Auto-scrolls to latest message
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* - Loading states
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* - Uses global theme colors from index.css
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*
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* @example
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* ```tsx
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* const ChatPage = () => {
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* const [messages, setMessages] = useState<Message[]>([
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* { role: "system", content: "You are a helpful assistant." }
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* ]);
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*
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* const chatMutation = trpc.ai.chat.useMutation({
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* onSuccess: (response) => {
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* // Assuming your tRPC endpoint returns the AI response as a string
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* setMessages(prev => [...prev, {
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* role: "assistant",
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* content: response
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* }]);
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* },
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* onError: (error) => {
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* console.error("Chat error:", error);
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* // Optionally show error message to user
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* }
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* });
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*
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* const handleSend = (content: string) => {
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* const newMessages = [...messages, { role: "user", content }];
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* setMessages(newMessages);
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* chatMutation.mutate({ messages: newMessages });
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* };
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*
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* return (
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* <AIChatBox
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* messages={messages}
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* onSendMessage={handleSend}
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* isLoading={chatMutation.isPending}
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* suggestedPrompts={[
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* "Explain quantum computing",
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* "Write a hello world in Python"
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* ]}
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* />
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* );
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* };
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* ```
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*/
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export function AIChatBox({
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messages,
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onSendMessage,
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isLoading = false,
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placeholder = "Type your message...",
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className,
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height = "600px",
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emptyStateMessage = "Start a conversation with AI",
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suggestedPrompts,
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}: AIChatBoxProps) {
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const [input, setInput] = useState("");
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const scrollAreaRef = useRef<HTMLDivElement>(null);
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const containerRef = useRef<HTMLDivElement>(null);
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const inputAreaRef = useRef<HTMLFormElement>(null);
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const textareaRef = useRef<HTMLTextAreaElement>(null);
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// Filter out system messages
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const displayMessages = messages.filter((msg) => msg.role !== "system");
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// Calculate min-height for last assistant message to push user message to top
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const [minHeightForLastMessage, setMinHeightForLastMessage] = useState(0);
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useEffect(() => {
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if (containerRef.current && inputAreaRef.current) {
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const containerHeight = containerRef.current.offsetHeight;
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const inputHeight = inputAreaRef.current.offsetHeight;
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const scrollAreaHeight = containerHeight - inputHeight;
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// Reserve space for:
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// - padding (p-4 = 32px top+bottom)
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// - user message: 40px (item height) + 16px (margin-top from space-y-4) = 56px
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// Note: margin-bottom is not counted because it naturally pushes the assistant message down
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const userMessageReservedHeight = 56;
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const calculatedHeight = scrollAreaHeight - 32 - userMessageReservedHeight;
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setMinHeightForLastMessage(Math.max(0, calculatedHeight));
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}
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}, []);
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// Scroll to bottom helper function with smooth animation
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const scrollToBottom = () => {
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const viewport = scrollAreaRef.current?.querySelector(
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'[data-radix-scroll-area-viewport]'
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) as HTMLDivElement;
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if (viewport) {
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requestAnimationFrame(() => {
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viewport.scrollTo({
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top: viewport.scrollHeight,
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behavior: 'smooth'
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});
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});
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}
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};
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const handleSubmit = (e: React.FormEvent) => {
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e.preventDefault();
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const trimmedInput = input.trim();
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if (!trimmedInput || isLoading) return;
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onSendMessage(trimmedInput);
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setInput("");
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// Scroll immediately after sending
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scrollToBottom();
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// Keep focus on input
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textareaRef.current?.focus();
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};
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const handleKeyDown = (e: React.KeyboardEvent<HTMLTextAreaElement>) => {
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if (e.key === "Enter" && !e.shiftKey) {
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e.preventDefault();
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handleSubmit(e);
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}
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};
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return (
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<div
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ref={containerRef}
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className={cn(
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"flex flex-col bg-card text-card-foreground rounded-lg border shadow-sm",
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className
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)}
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style={{ height }}
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>
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{/* Messages Area */}
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<div ref={scrollAreaRef} className="flex-1 overflow-hidden">
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{displayMessages.length === 0 ? (
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<div className="flex h-full flex-col p-4">
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<div className="flex flex-1 flex-col items-center justify-center gap-6 text-muted-foreground">
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<div className="flex flex-col items-center gap-3">
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<Sparkles className="size-12 opacity-20" />
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<p className="text-sm">{emptyStateMessage}</p>
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</div>
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{suggestedPrompts && suggestedPrompts.length > 0 && (
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<div className="flex max-w-2xl flex-wrap justify-center gap-2">
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{suggestedPrompts.map((prompt, index) => (
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<button
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key={index}
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onClick={() => onSendMessage(prompt)}
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disabled={isLoading}
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className="rounded-lg border border-border bg-card px-4 py-2 text-sm transition-colors hover:bg-accent disabled:cursor-not-allowed disabled:opacity-50"
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>
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{prompt}
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</button>
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))}
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</div>
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)}
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</div>
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</div>
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) : (
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<ScrollArea className="h-full">
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<div className="flex flex-col space-y-4 p-4">
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{displayMessages.map((message, index) => {
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// Apply min-height to last message only if NOT loading (when loading, the loading indicator gets it)
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const isLastMessage = index === displayMessages.length - 1;
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const shouldApplyMinHeight =
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isLastMessage && !isLoading && minHeightForLastMessage > 0;
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return (
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<div
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key={index}
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className={cn(
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"flex gap-3",
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message.role === "user"
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? "justify-end items-start"
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: "justify-start items-start"
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)}
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style={
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shouldApplyMinHeight
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? { minHeight: `${minHeightForLastMessage}px` }
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: undefined
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}
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>
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{message.role === "assistant" && (
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<div className="size-8 shrink-0 mt-1 rounded-full bg-primary/10 flex items-center justify-center">
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<Sparkles className="size-4 text-primary" />
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</div>
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)}
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<div
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className={cn(
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"max-w-[80%] rounded-lg px-4 py-2.5",
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message.role === "user"
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? "bg-primary text-primary-foreground"
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: "bg-muted text-foreground"
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)}
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>
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{message.role === "assistant" ? (
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<div className="prose prose-sm dark:prose-invert max-w-none">
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<Streamdown>{message.content}</Streamdown>
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</div>
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) : (
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<p className="whitespace-pre-wrap text-sm">
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{message.content}
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</p>
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)}
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</div>
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{message.role === "user" && (
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<div className="size-8 shrink-0 mt-1 rounded-full bg-secondary flex items-center justify-center">
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<User className="size-4 text-secondary-foreground" />
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</div>
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)}
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</div>
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);
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})}
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{isLoading && (
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<div
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className="flex items-start gap-3"
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style={
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minHeightForLastMessage > 0
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? { minHeight: `${minHeightForLastMessage}px` }
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: undefined
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}
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>
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<div className="size-8 shrink-0 mt-1 rounded-full bg-primary/10 flex items-center justify-center">
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<Sparkles className="size-4 text-primary" />
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</div>
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<div className="rounded-lg bg-muted px-4 py-2.5">
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<Loader2 className="size-4 animate-spin text-muted-foreground" />
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</div>
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</div>
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)}
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</div>
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</ScrollArea>
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)}
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</div>
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{/* Input Area */}
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<form
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ref={inputAreaRef}
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onSubmit={handleSubmit}
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className="flex gap-2 p-4 border-t bg-background/50 items-end"
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>
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<Textarea
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ref={textareaRef}
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value={input}
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onChange={(e) => setInput(e.target.value)}
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onKeyDown={handleKeyDown}
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placeholder={placeholder}
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className="flex-1 max-h-32 resize-none min-h-9"
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rows={1}
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/>
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<Button
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type="submit"
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size="icon"
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disabled={!input.trim() || isLoading}
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className="shrink-0 h-[38px] w-[38px]"
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>
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{isLoading ? (
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<Loader2 className="size-4 animate-spin" />
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) : (
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<Send className="size-4" />
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)}
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</Button>
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</form>
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</div>
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);
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}
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