const express = require('express');

const cors = require('cors');

const metricsRouter = require('./routes/metrics');

const twist = require('./lib/twist-config');

const app = express();

const PORT = process.env.PORT || 3001;

app.use(cors());

app.use(express.json());

// Apply rate limiting if enabled

app.use(twist.applyRateLimit);

app.use('/api/metrics', metricsRouter);

app.get('/health', (req, res) => {

res.json({ status: 'ok' });

});

app.use((err, req, res, next) => {

console.error(err.stack);

res.status(500).json({ error: 'Something went wrong!' });

});

app.listen(PORT, () => {

console.log(`API server running on http://localhost:${PORT}`);

console.log(`Available endpoints:`);

console.log(` GET http://localhost:${PORT}/api/metrics/dau`);

console.log(` GET http://localhost:${PORT}/api/metrics/top-orgs`);

});