const express = require('express');
const { Pool } = require('pg');
const cors = require('cors');
require('dotenv').config();

const app = express();
const port = 3000;

// Middleware
app.use(cors()); // ← penting untuk akses dari frontend container
app.use(express.json());

// PostgreSQL connection
const pool = new Pool({
  host: process.env.PGHOST || 'db',
  user: process.env.PGUSER || 'postgres',
  password: process.env.PGPASSWORD || 'postgres',
  database: process.env.PGDATABASE || 'mydb',
  port: process.env.PGPORT || 5432,
});

module.exports = pool;

// Routes
app.get('/', (req, res) => {
  res.send('API is running!');
});

app.get('/users', async (req, res) => {
  try {
    const result = await pool.query('SELECT * FROM users');
    res.json(result.rows);
  } catch (err) {
    res.status(500).json({ error: err.message });
  }
});

// Start server
app.listen(port, () => {
  console.log(`API listening on port ${port}`);
});