709 lines
21 KiB
TypeScript
709 lines
21 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 crypto from 'crypto';
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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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import { Settings } from 'lucide-react';
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import SettingsDialog from './SettingsDialog';
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import NextError from 'next/error';
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export type Message = {
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messageId: string;
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chatId: 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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export interface File {
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fileName: string;
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fileExtension: string;
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fileId: string;
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}
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const useSocket = (
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url: string,
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setIsWSReady: (ready: boolean) => void,
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setError: (error: boolean) => void,
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) => {
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const wsRef = useRef<WebSocket | null>(null);
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const reconnectTimeoutRef = useRef<NodeJS.Timeout>();
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const retryCountRef = useRef(0);
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const isCleaningUpRef = useRef(false);
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const MAX_RETRIES = 3;
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const INITIAL_BACKOFF = 1000; // 1 second
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const getBackoffDelay = (retryCount: number) => {
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return Math.min(INITIAL_BACKOFF * Math.pow(2, retryCount), 10000); // Cap at 10 seconds
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};
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useEffect(() => {
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const connectWs = async () => {
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if (wsRef.current?.readyState === WebSocket.OPEN) {
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wsRef.current.close();
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}
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try {
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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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let openAIBaseURL =
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chatModelProvider === 'custom_openai'
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? localStorage.getItem('openAIBaseURL')
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: null;
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let openAIPIKey =
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chatModelProvider === 'custom_openai'
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? localStorage.getItem('openAIApiKey')
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: null;
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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) => {
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if (!res.ok)
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throw new Error(
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`Failed to fetch models: ${res.status} ${res.statusText}`,
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);
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return res.json();
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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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if (!chatModel || !chatModelProvider) {
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const chatModelProviders = providers.chatModelProviders;
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chatModelProvider =
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chatModelProvider || Object.keys(chatModelProviders)[0];
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if (chatModelProvider === 'custom_openai') {
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toast.error(
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'Seems like you are using the custom OpenAI provider, please open the settings and enter a model name to use.',
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);
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setError(true);
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return;
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} else {
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chatModel = Object.keys(chatModelProviders[chatModelProvider])[0];
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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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}
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}
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if (!embeddingModel || !embeddingModelProvider) {
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const embeddingModelProviders = providers.embeddingModelProviders;
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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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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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}
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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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} else {
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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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Object.keys(chatModelProviders).length > 0 &&
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(((!openAIBaseURL || !openAIPIKey) &&
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chatModelProvider === 'custom_openai') ||
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!chatModelProviders[chatModelProvider])
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) {
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const chatModelProvidersKeys = Object.keys(chatModelProviders);
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chatModelProvider =
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chatModelProvidersKeys.find(
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(key) => Object.keys(chatModelProviders[key]).length > 0,
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) || chatModelProvidersKeys[0];
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if (
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chatModelProvider === 'custom_openai' &&
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(!openAIBaseURL || !openAIPIKey)
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) {
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toast.error(
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'Seems like you are using the custom OpenAI provider, please open the settings and configure the API key and base URL',
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);
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setError(true);
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return;
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}
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localStorage.setItem('chatModelProvider', chatModelProvider);
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}
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if (
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chatModelProvider &&
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(!openAIBaseURL || !openAIPIKey) &&
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!chatModelProviders[chatModelProvider][chatModel]
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) {
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chatModel = Object.keys(
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chatModelProviders[
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Object.keys(chatModelProviders[chatModelProvider]).length > 0
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? chatModelProvider
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: Object.keys(chatModelProviders)[0]
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],
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)[0];
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localStorage.setItem('chatModel', chatModel);
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}
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if (
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Object.keys(embeddingModelProviders).length > 0 &&
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!embeddingModelProviders[embeddingModelProvider]
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) {
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embeddingModelProvider = Object.keys(embeddingModelProviders)[0];
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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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if (
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embeddingModelProvider &&
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!embeddingModelProviders[embeddingModelProvider][embeddingModel]
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) {
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embeddingModel = Object.keys(
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embeddingModelProviders[embeddingModelProvider],
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)[0];
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localStorage.setItem('embeddingModel', embeddingModel);
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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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wsRef.current = ws;
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const timeoutId = setTimeout(() => {
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if (ws.readyState !== 1) {
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toast.error(
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'Failed to connect to the server. Please try again later.',
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);
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}
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}, 10000);
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ws.addEventListener('message', (e) => {
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const data = JSON.parse(e.data);
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if (data.type === 'signal' && data.data === 'open') {
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const interval = setInterval(() => {
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if (ws.readyState === 1) {
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setIsWSReady(true);
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setError(false);
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if (retryCountRef.current > 0) {
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toast.success('Connection restored.');
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}
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retryCountRef.current = 0;
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clearInterval(interval);
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}
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}, 5);
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clearTimeout(timeoutId);
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console.debug(new Date(), 'ws:connected');
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}
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if (data.type === 'error') {
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toast.error(data.data);
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}
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});
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ws.onerror = () => {
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clearTimeout(timeoutId);
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setIsWSReady(false);
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toast.error('WebSocket connection error.');
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};
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ws.onclose = () => {
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clearTimeout(timeoutId);
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setIsWSReady(false);
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console.debug(new Date(), 'ws:disconnected');
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if (!isCleaningUpRef.current) {
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toast.error('Connection lost. Attempting to reconnect...');
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attemptReconnect();
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}
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};
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} catch (error) {
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console.debug(new Date(), 'ws:error', error);
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setIsWSReady(false);
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attemptReconnect();
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}
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};
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const attemptReconnect = () => {
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retryCountRef.current += 1;
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if (retryCountRef.current > MAX_RETRIES) {
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console.debug(new Date(), 'ws:max_retries');
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setError(true);
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toast.error(
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'Unable to connect to server after multiple attempts. Please refresh the page to try again.',
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);
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return;
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}
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const backoffDelay = getBackoffDelay(retryCountRef.current);
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console.debug(
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new Date(),
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`ws:retry attempt=${retryCountRef.current}/${MAX_RETRIES} delay=${backoffDelay}ms`,
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);
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if (reconnectTimeoutRef.current) {
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clearTimeout(reconnectTimeoutRef.current);
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}
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reconnectTimeoutRef.current = setTimeout(() => {
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connectWs();
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}, backoffDelay);
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};
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connectWs();
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return () => {
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if (reconnectTimeoutRef.current) {
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clearTimeout(reconnectTimeoutRef.current);
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}
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if (wsRef.current?.readyState === WebSocket.OPEN) {
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wsRef.current.close();
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isCleaningUpRef.current = true;
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console.debug(new Date(), 'ws:cleanup');
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}
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};
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}, [url, setIsWSReady, setError]);
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return wsRef.current;
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};
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const loadMessages = async (
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chatId: string,
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setMessages: (messages: Message[]) => void,
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setIsMessagesLoaded: (loaded: boolean) => void,
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setChatHistory: (history: [string, string][]) => void,
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setFocusMode: (mode: string) => void,
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setNotFound: (notFound: boolean) => void,
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setFiles: (files: File[]) => void,
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setFileIds: (fileIds: string[]) => void,
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) => {
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const res = await fetch(
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`${process.env.NEXT_PUBLIC_API_URL}/chats/${chatId}`,
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{
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method: 'GET',
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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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);
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if (res.status === 404) {
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setNotFound(true);
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setIsMessagesLoaded(true);
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return;
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}
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const data = await res.json();
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const messages = data.messages.map((msg: any) => {
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return {
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...msg,
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...JSON.parse(msg.metadata),
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};
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}) as Message[];
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setMessages(messages);
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const history = messages.map((msg) => {
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return [msg.role, msg.content];
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}) as [string, string][];
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console.debug(new Date(), 'app:messages_loaded');
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document.title = messages[0].content;
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const files = data.chat.files.map((file: any) => {
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return {
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fileName: file.name,
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fileExtension: file.name.split('.').pop(),
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fileId: file.fileId,
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};
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});
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setFiles(files);
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setFileIds(files.map((file: File) => file.fileId));
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setChatHistory(history);
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setFocusMode(data.chat.focusMode);
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setIsMessagesLoaded(true);
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};
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const ChatWindow = ({ id }: { id?: string }) => {
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const searchParams = useSearchParams();
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const initialMessage = searchParams.get('q');
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const [chatId, setChatId] = useState<string | undefined>(id);
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const [newChatCreated, setNewChatCreated] = useState(false);
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const [hasError, setHasError] = useState(false);
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const [isReady, setIsReady] = useState(false);
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const [isWSReady, setIsWSReady] = useState(false);
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let websocketUrl = process.env.NEXT_PUBLIC_WS_URL!;
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if (websocketUrl.startsWith('/')) {
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const protocol = window.location.protocol === 'https:' ? 'wss://' : 'ws://';
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const host = window.location.host;
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const path = websocketUrl;
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websocketUrl = `${protocol}${host}${path}`;
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}
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const ws = useSocket(websocketUrl, setIsWSReady, setHasError);
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const [loading, setLoading] = useState(false);
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const [messageAppeared, setMessageAppeared] = useState(false);
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const [chatHistory, setChatHistory] = useState<[string, string][]>([]);
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const [messages, setMessages] = useState<Message[]>([]);
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const [files, setFiles] = useState<File[]>([]);
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const [fileIds, setFileIds] = useState<string[]>([]);
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const [focusMode, setFocusMode] = useState('webSearch');
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const [optimizationMode, setOptimizationMode] = useState('speed');
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const [isMessagesLoaded, setIsMessagesLoaded] = useState(false);
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const [notFound, setNotFound] = useState(false);
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const [isSettingsOpen, setIsSettingsOpen] = useState(false);
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useEffect(() => {
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if (
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chatId &&
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!newChatCreated &&
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!isMessagesLoaded &&
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messages.length === 0
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) {
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loadMessages(
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chatId,
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setMessages,
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setIsMessagesLoaded,
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setChatHistory,
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setFocusMode,
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setNotFound,
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setFiles,
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setFileIds,
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);
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} else if (!chatId) {
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setNewChatCreated(true);
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setIsMessagesLoaded(true);
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setChatId(crypto.randomBytes(20).toString('hex'));
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}
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, []);
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useEffect(() => {
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return () => {
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if (ws?.readyState === 1) {
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ws.close();
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console.debug(new Date(), 'ws:cleanup');
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}
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};
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, []);
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const messagesRef = useRef<Message[]>([]);
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useEffect(() => {
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messagesRef.current = messages;
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}, [messages]);
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useEffect(() => {
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if (isMessagesLoaded && isWSReady) {
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setIsReady(true);
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console.debug(new Date(), 'app:ready');
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} else {
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setIsReady(false);
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}
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}, [isMessagesLoaded, isWSReady]);
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const sendMessage = async (message: string, messageId?: string) => {
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if (loading) return;
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if (!ws || ws.readyState !== WebSocket.OPEN) {
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toast.error('Cannot send message while disconnected');
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return;
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}
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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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messageId = messageId ?? crypto.randomBytes(7).toString('hex');
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ws.send(
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JSON.stringify({
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type: 'message',
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message: {
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messageId: messageId,
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chatId: chatId!,
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content: message,
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},
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files: fileIds,
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focusMode: focusMode,
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optimizationMode: optimizationMode,
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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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messageId: messageId,
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chatId: chatId!,
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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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messageId: data.messageId,
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chatId: chatId!,
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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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messageId: data.messageId,
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chatId: chatId!,
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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.messageId === 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);
|
|
setLoading(false);
|
|
|
|
const lastMsg = messagesRef.current[messagesRef.current.length - 1];
|
|
|
|
if (
|
|
lastMsg.role === 'assistant' &&
|
|
lastMsg.sources &&
|
|
lastMsg.sources.length > 0 &&
|
|
!lastMsg.suggestions
|
|
) {
|
|
const suggestions = await getSuggestions(messagesRef.current);
|
|
setMessages((prev) =>
|
|
prev.map((msg) => {
|
|
if (msg.messageId === lastMsg.messageId) {
|
|
return { ...msg, suggestions: suggestions };
|
|
}
|
|
return msg;
|
|
}),
|
|
);
|
|
}
|
|
}
|
|
};
|
|
|
|
ws?.addEventListener('message', messageHandler);
|
|
};
|
|
|
|
const rewrite = (messageId: string) => {
|
|
const index = messages.findIndex((msg) => msg.messageId === messageId);
|
|
|
|
if (index === -1) return;
|
|
|
|
const message = messages[index - 1];
|
|
|
|
setMessages((prev) => {
|
|
return [...prev.slice(0, messages.length > 2 ? index - 1 : 0)];
|
|
});
|
|
setChatHistory((prev) => {
|
|
return [...prev.slice(0, messages.length > 2 ? index - 1 : 0)];
|
|
});
|
|
|
|
sendMessage(message.content, message.messageId);
|
|
};
|
|
|
|
useEffect(() => {
|
|
if (isReady && initialMessage && ws?.readyState === 1) {
|
|
sendMessage(initialMessage);
|
|
}
|
|
// eslint-disable-next-line react-hooks/exhaustive-deps
|
|
}, [ws?.readyState, isReady, initialMessage, isWSReady]);
|
|
|
|
if (hasError) {
|
|
return (
|
|
<div className="relative">
|
|
<div className="absolute w-full flex flex-row items-center justify-end mr-5 mt-5">
|
|
<Settings
|
|
className="cursor-pointer lg:hidden"
|
|
onClick={() => setIsSettingsOpen(true)}
|
|
/>
|
|
</div>
|
|
<div className="flex flex-col items-center justify-center min-h-screen">
|
|
<p className="dark:text-white/70 text-black/70 text-sm">
|
|
Failed to connect to the server. Please try again later.
|
|
</p>
|
|
</div>
|
|
<SettingsDialog isOpen={isSettingsOpen} setIsOpen={setIsSettingsOpen} />
|
|
</div>
|
|
);
|
|
}
|
|
|
|
return isReady ? (
|
|
notFound ? (
|
|
<NextError statusCode={404} />
|
|
) : (
|
|
<div>
|
|
{messages.length > 0 ? (
|
|
<>
|
|
<Navbar chatId={chatId!} messages={messages} />
|
|
<Chat
|
|
loading={loading}
|
|
messages={messages}
|
|
sendMessage={sendMessage}
|
|
messageAppeared={messageAppeared}
|
|
rewrite={rewrite}
|
|
fileIds={fileIds}
|
|
setFileIds={setFileIds}
|
|
files={files}
|
|
setFiles={setFiles}
|
|
/>
|
|
</>
|
|
) : (
|
|
<EmptyChat
|
|
sendMessage={sendMessage}
|
|
focusMode={focusMode}
|
|
setFocusMode={setFocusMode}
|
|
optimizationMode={optimizationMode}
|
|
setOptimizationMode={setOptimizationMode}
|
|
fileIds={fileIds}
|
|
setFileIds={setFileIds}
|
|
files={files}
|
|
setFiles={setFiles}
|
|
/>
|
|
)}
|
|
</div>
|
|
)
|
|
) : (
|
|
<div className="flex flex-row items-center justify-center min-h-screen">
|
|
<svg
|
|
aria-hidden="true"
|
|
className="w-8 h-8 text-light-200 fill-light-secondary dark:text-[#202020] animate-spin dark:fill-[#ffffff3b]"
|
|
viewBox="0 0 100 101"
|
|
fill="none"
|
|
xmlns="http://www.w3.org/2000/svg"
|
|
>
|
|
<path
|
|
d="M100 50.5908C100.003 78.2051 78.1951 100.003 50.5908 100C22.9765 99.9972 0.997224 78.018 1 50.4037C1.00281 22.7993 22.8108 0.997224 50.4251 1C78.0395 1.00281 100.018 22.8108 100 50.4251ZM9.08164 50.594C9.06312 73.3997 27.7909 92.1272 50.5966 92.1457C73.4023 92.1642 92.1298 73.4365 92.1483 50.6308C92.1669 27.8251 73.4392 9.0973 50.6335 9.07878C27.8278 9.06026 9.10003 27.787 9.08164 50.594Z"
|
|
fill="currentColor"
|
|
/>
|
|
<path
|
|
d="M93.9676 39.0409C96.393 38.4037 97.8624 35.9116 96.9801 33.5533C95.1945 28.8227 92.871 24.3692 90.0681 20.348C85.6237 14.1775 79.4473 9.36872 72.0454 6.45794C64.6435 3.54717 56.3134 2.65431 48.3133 3.89319C45.869 4.27179 44.3768 6.77534 45.014 9.20079C45.6512 11.6262 48.1343 13.0956 50.5786 12.717C56.5073 11.8281 62.5542 12.5399 68.0406 14.7911C73.527 17.0422 78.2187 20.7487 81.5841 25.4923C83.7976 28.5886 85.4467 32.059 86.4416 35.7474C87.1273 38.1189 89.5423 39.6781 91.9676 39.0409Z"
|
|
fill="currentFill"
|
|
/>
|
|
</svg>
|
|
</div>
|
|
);
|
|
};
|
|
|
|
export default ChatWindow;
|