345 lines
10 KiB
TypeScript
345 lines
10 KiB
TypeScript
'use client';
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import { useEffect, useRef, useState } from 'react';
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import { Document } from '@langchain/core/documents';
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import Navbar from './Navbar';
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import Chat from './Chat';
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import EmptyChat from './EmptyChat';
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import { toast } from 'sonner';
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import { useSearchParams } from 'next/navigation';
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import { getSuggestions } from '@/lib/actions';
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export type Message = {
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id: string;
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createdAt: Date;
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content: string;
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role: 'user' | 'assistant';
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suggestions?: string[];
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sources?: Document[];
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};
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const useSocket = (url: string, setIsReady: (ready: boolean) => void) => {
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const [ws, setWs] = useState<WebSocket | null>(null);
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useEffect(() => {
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if (!ws) {
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const connectWs = async () => {
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let chatModel = localStorage.getItem('chatModel');
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let chatModelProvider = localStorage.getItem('chatModelProvider');
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let embeddingModel = localStorage.getItem('embeddingModel');
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let embeddingModelProvider = localStorage.getItem(
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'embeddingModelProvider',
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);
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if (
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!chatModel ||
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!chatModelProvider ||
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!embeddingModel ||
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!embeddingModelProvider
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) {
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const providers = await fetch(
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`${process.env.NEXT_PUBLIC_API_URL}/models`,
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{
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headers: {
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'Content-Type': 'application/json',
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},
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},
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).then(async (res) => await res.json());
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const chatModelProviders = providers.chatModelProviders;
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const embeddingModelProviders = providers.embeddingModelProviders;
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if (
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!chatModelProviders ||
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Object.keys(chatModelProviders).length === 0
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)
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return toast.error('No chat models available');
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if (
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!embeddingModelProviders ||
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Object.keys(embeddingModelProviders).length === 0
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)
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return toast.error('No embedding models available');
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chatModelProvider = Object.keys(chatModelProviders)[0];
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chatModel = Object.keys(chatModelProviders[chatModelProvider])[0];
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embeddingModelProvider = Object.keys(embeddingModelProviders)[0];
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embeddingModel = Object.keys(
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embeddingModelProviders[embeddingModelProvider],
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)[0];
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localStorage.setItem('chatModel', chatModel!);
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localStorage.setItem('chatModelProvider', chatModelProvider);
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localStorage.setItem('embeddingModel', embeddingModel!);
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localStorage.setItem(
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'embeddingModelProvider',
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embeddingModelProvider,
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);
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}
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const wsURL = new URL(url);
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const searchParams = new URLSearchParams({});
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searchParams.append('chatModel', chatModel!);
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searchParams.append('chatModelProvider', chatModelProvider);
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if (chatModelProvider === 'custom_openai') {
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searchParams.append(
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'openAIApiKey',
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localStorage.getItem('openAIApiKey')!,
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);
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searchParams.append(
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'openAIBaseURL',
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localStorage.getItem('openAIBaseURL')!,
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);
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}
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searchParams.append('embeddingModel', embeddingModel!);
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searchParams.append('embeddingModelProvider', embeddingModelProvider);
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wsURL.search = searchParams.toString();
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const ws = new WebSocket(wsURL.toString());
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ws.onopen = () => {
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console.log('[DEBUG] open');
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};
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const stateCheckInterval = setInterval(() => {
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if (ws.readyState === 1) {
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setIsReady(true);
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clearInterval(stateCheckInterval);
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}
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}, 100);
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setWs(ws);
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ws.onmessage = (e) => {
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const parsedData = JSON.parse(e.data);
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if (parsedData.type === 'error') {
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toast.error(parsedData.data);
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if (parsedData.key === 'INVALID_MODEL_SELECTED') {
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localStorage.clear();
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}
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}
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};
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};
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connectWs();
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}
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return () => {
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ws?.close();
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console.log('[DEBUG] closed');
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};
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}, [ws, url, setIsReady]);
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return ws;
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};
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const ChatWindow = () => {
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const searchParams = useSearchParams();
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const initialMessage = searchParams.get('q');
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const [isReady, setIsReady] = useState(false);
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const ws = useSocket(process.env.NEXT_PUBLIC_WS_URL!, setIsReady);
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const [chatHistory, setChatHistory] = useState<[string, string][]>([]);
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const [messages, setMessages] = useState<Message[]>([]);
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const messagesRef = useRef<Message[]>([]);
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const [loading, setLoading] = useState(false);
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const [messageAppeared, setMessageAppeared] = useState(false);
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const [focusMode, setFocusMode] = useState('webSearch');
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useEffect(() => {
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messagesRef.current = messages;
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}, [messages]);
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const sendMessage = async (message: string) => {
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if (loading) return;
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setLoading(true);
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setMessageAppeared(false);
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let sources: Document[] | undefined = undefined;
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let recievedMessage = '';
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let added = false;
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ws?.send(
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JSON.stringify({
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type: 'message',
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content: message,
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focusMode: focusMode,
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history: [...chatHistory, ['human', message]],
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}),
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);
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setMessages((prevMessages) => [
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...prevMessages,
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{
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content: message,
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id: Math.random().toString(36).substring(7),
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role: 'user',
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createdAt: new Date(),
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},
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]);
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const messageHandler = async (e: MessageEvent) => {
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const data = JSON.parse(e.data);
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if (data.type === 'error') {
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toast.error(data.data);
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setLoading(false);
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return;
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}
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if (data.type === 'sources') {
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sources = data.data;
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if (!added) {
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setMessages((prevMessages) => [
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...prevMessages,
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{
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content: '',
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id: data.messageId,
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role: 'assistant',
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sources: sources,
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createdAt: new Date(),
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},
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]);
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added = true;
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}
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setMessageAppeared(true);
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}
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if (data.type === 'message') {
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if (!added) {
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setMessages((prevMessages) => [
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...prevMessages,
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{
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content: data.data,
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id: data.messageId,
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role: 'assistant',
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sources: sources,
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createdAt: new Date(),
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},
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]);
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added = true;
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}
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setMessages((prev) =>
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prev.map((message) => {
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if (message.id === data.messageId) {
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return { ...message, content: message.content + data.data };
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}
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return message;
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}),
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);
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recievedMessage += data.data;
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setMessageAppeared(true);
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}
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if (data.type === 'messageEnd') {
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setChatHistory((prevHistory) => [
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...prevHistory,
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['human', message],
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['assistant', recievedMessage],
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]);
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ws?.removeEventListener('message', messageHandler);
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setLoading(false);
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const lastMsg = messagesRef.current[messagesRef.current.length - 1];
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if (
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lastMsg.role === 'assistant' &&
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lastMsg.sources &&
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lastMsg.sources.length > 0 &&
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!lastMsg.suggestions
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) {
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const suggestions = await getSuggestions(messagesRef.current);
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setMessages((prev) =>
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prev.map((msg) => {
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if (msg.id === lastMsg.id) {
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return { ...msg, suggestions: suggestions };
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}
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return msg;
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}),
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);
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}
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}
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};
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ws?.addEventListener('message', messageHandler);
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};
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const rewrite = (messageId: string) => {
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const index = messages.findIndex((msg) => msg.id === messageId);
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if (index === -1) return;
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const message = messages[index - 1];
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setMessages((prev) => {
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return [...prev.slice(0, messages.length > 2 ? index - 1 : 0)];
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});
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setChatHistory((prev) => {
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return [...prev.slice(0, messages.length > 2 ? index - 1 : 0)];
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});
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sendMessage(message.content);
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};
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useEffect(() => {
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if (isReady && initialMessage) {
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sendMessage(initialMessage);
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}
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, [isReady, initialMessage]);
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return isReady ? (
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<div>
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{messages.length > 0 ? (
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<>
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<Navbar messages={messages} />
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<Chat
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loading={loading}
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messages={messages}
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sendMessage={sendMessage}
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messageAppeared={messageAppeared}
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rewrite={rewrite}
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/>
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</>
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) : (
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<EmptyChat
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sendMessage={sendMessage}
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focusMode={focusMode}
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setFocusMode={setFocusMode}
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/>
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)}
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</div>
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) : (
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<div className="flex flex-row items-center justify-center min-h-screen">
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<svg
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aria-hidden="true"
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className="w-8 h-8 text-[#202020] animate-spin fill-[#ffffff3b]"
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viewBox="0 0 100 101"
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fill="none"
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xmlns="http://www.w3.org/2000/svg"
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>
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<path
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d="M100 50.5908C100 78.2051 77.6142 100.591 50 100.591C22.3858 100.591 0 78.2051 0 50.5908C0 22.9766 22.3858 0.59082 50 0.59082C77.6142 0.59082 100 22.9766 100 50.5908ZM9.08144 50.5908C9.08144 73.1895 27.4013 91.5094 50 91.5094C72.5987 91.5094 90.9186 73.1895 90.9186 50.5908C90.9186 27.9921 72.5987 9.67226 50 9.67226C27.4013 9.67226 9.08144 27.9921 9.08144 50.5908Z"
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fill="currentColor"
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/>
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<path
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d="M93.9676 39.0409C96.393 38.4038 97.8624 35.9116 97.0079 33.5539C95.2932 28.8227 92.871 24.3692 89.8167 20.348C85.8452 15.1192 80.8826 10.7238 75.2124 7.41289C69.5422 4.10194 63.2754 1.94025 56.7698 1.05124C51.7666 0.367541 46.6976 0.446843 41.7345 1.27873C39.2613 1.69328 37.813 4.19778 38.4501 6.62326C39.0873 9.04874 41.5694 10.4717 44.0505 10.1071C47.8511 9.54855 51.7191 9.52689 55.5402 10.0491C60.8642 10.7766 65.9928 12.5457 70.6331 15.2552C75.2735 17.9648 79.3347 21.5619 82.5849 25.841C84.9175 28.9121 86.7997 32.2913 88.1811 35.8758C89.083 38.2158 91.5421 39.6781 93.9676 39.0409Z"
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fill="currentFill"
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/>
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</svg>
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</div>
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);
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};
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export default ChatWindow;
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