server.js

require('dotenv').config();
const express = require('express');
const cors = require('cors');
const path = require('path');
const apiRoutes = require('./routes/api');

const app = express();

// Middleware
app.use(cors());
app.use(express.json());
app.use(express.static('public'));

// Ensure data directory exists
const dataDir = path.join(__dirname, 'data');
if (!require('fs').existsSync(dataDir)) {
    require('fs').mkdirSync(dataDir);
}

// Error handling middleware
app.use((err, req, res, next) => {
    console.error(err.stack);
    res.status(500).json({
        error: 'Something went wrong!',
        message: err.message
    });
});

// API Routes
app.use('/api', apiRoutes);

// Serve index.html for all other routes
app.get('*', (req, res) => {
    res.sendFile(path.join(__dirname, 'public', 'index.html'));
});

const PORT = process.env.PORT || 3000;
app.listen(PORT, () => {
    console.log(`Server is running on port ${PORT}`);
    console.log(`API Base URL: ${process.env.LITELLM_API_BASE}`);
});

// Handle unhandled promise rejections
process.on('unhandledRejection', (err) => {
    console.error('Unhandled Promise Rejection:', err);
});