server.js

const express = require('express');
const cors = require('cors');
const path = require('path');
const app = express();
const PORT = process.env.PORT || 3000;

// Middleware
app.use(cors());
app.use(express.json());
app.use(express.static(path.join(__dirname, 'public')));

// Routes
const apiRoutes = require('./routes/api');
app.use('/api', apiRoutes);

// Serve the main index.html for SPA routing
app.get('/', (req, res) => {
    res.sendFile(path.join(__dirname, 'public', 'index.html'));
});

// Fallback route for SPA
app.get('*', (req, res) => {
    res.sendFile(path.join(__dirname, 'public', 'index.html'));
});

// Error handling middleware
app.use((err, req, res, next) => {
    console.error(err.stack);
    res.status(500).json({ error: 'Internal Server Error' });
});

// Start the server
app.listen(PORT, () => {
    console.log(`🚀 Web3 Nexus server is running at http://localhost:${PORT}`);
    console.log(`📡 API available at http://localhost:${PORT}/api`);
});