LibreChat/api/server/index.js

const express = require('express');
const dbConnect = require('../models/dbConnect');
const { migrateDb } = require('../models');
const path = require('path');
const cors = require('cors');
const routes = require('./routes');
const app = express();
const port = process.env.PORT || 3080;
const host = process.env.HOST || 'localhost'
const projectPath = path.join(__dirname, '..', '..', 'client');
dbConnect().then(() => {
  console.log('Connected to MongoDB');
  migrateDb();
});

app.use(cors());
app.use(express.json());
app.use(express.static(path.join(projectPath, 'public')));

app.get('/', function (req, res) {
  console.log(path.join(projectPath, 'public', 'index.html'));
  res.sendFile(path.join(projectPath, 'public', 'index.html'));
});

app.use('/api/ask', routes.ask);
app.use('/api/messages', routes.messages);
app.use('/api/convos', routes.convos);
app.use('/api/customGpts', routes.customGpts);
app.use('/api/prompts', routes.prompts);

app.get('/api/models', function (req, res) {
  const hasOpenAI = !!process.env.OPENAI_KEY;
  const hasChatGpt = !!process.env.CHATGPT_TOKEN;
  const hasBing = !!process.env.BING_TOKEN;

  res.send(JSON.stringify({ hasOpenAI, hasChatGpt, hasBing }));
});

app.listen(port, host,  () => {
  if (host=='0.0.0.0')
    console.log(`Server listening on all interface at port ${port}. Use http://localhost:${port} to access it`);
  else
    console.log(`Server listening at http://${host=='0.0.0.0'?'localhost':host}:${port}`);
});