const express = require('express');
const path = require('path');
const { createProxyMiddleware } = require('http-proxy-middleware');
const app = express();
const PORT = process.env.PORT || 3000;

// Request logging middleware
app.use((req, res, next) => {
    console.log(`[Frontend Server] ${req.method} ${req.url}`);
    next();
});

// Proxy API requests
const backendUrl = process.env.BACKEND_URL || 'http://backend:5000';
const proxyConfig = (pathPrefix) => ({
    target: `${backendUrl}${pathPrefix}`,
    changeOrigin: true,
    logLevel: 'debug',
    onProxyReq: (proxyReq, req, res) => {
        console.log(`[Proxy] Proxying ${req.method} ${req.url} -> ${backendUrl}${pathPrefix}${req.url}`);
    }
});

app.use('/auth', createProxyMiddleware(proxyConfig('/auth')));
app.use('/restaurants', createProxyMiddleware(proxyConfig('/restaurants')));
app.use('/admin', createProxyMiddleware(proxyConfig('/admin')));

// Serve static files from the React app
app.use(express.static(path.join(__dirname, 'client/dist')));

app.get('*', (req, res) => {
    res.sendFile(path.join(__dirname, 'client/dist/index.html'));
});

app.listen(PORT, () => {
    console.log(`Server is running on port ${PORT}`);
});