import pool, { run } from '../db/index.js';

export async function getSuppliers(req, res) {
  try {
    const { rows } = await pool.query(
      'SELECT id, code, name, email, type, active, created_at FROM suppliers ORDER BY name'
    );
    res.json(rows);
  } catch (err) {
    res.status(500).json({ error: err.message });
  }
}

export async function createSupplier(req, res) {
  try {
    const { code, name, email, type, active = 1 } = req.body || {};
    if (!code || !name || !email || !type) {
      return res.status(400).json({ error: 'code, name, email et type sont requis.' });
    }
    await run(
      'INSERT INTO suppliers (code, name, email, type, active) VALUES ($1, $2, $3, $4, $5)',
      [code, name, email, type, active]
    );
    const { rows } = await pool.query('SELECT * FROM suppliers ORDER BY id DESC LIMIT 1');
    res.status(201).json(rows[0]);
  } catch (err) {
    res.status(500).json({ error: err.message });
  }
}

export async function updateSupplier(req, res) {
  try {
    const { id } = req.params;
    const { name, email, type, active } = req.body || {};
    await run(
      'UPDATE suppliers SET name = $1, email = $2, type = $3, active = $4 WHERE id = $5',
      [name, email, type, active, id]
    );
    const { rows } = await pool.query('SELECT * FROM suppliers WHERE id = $1', [id]);
    if (rows.length === 0) return res.status(404).json({ error: 'Fournisseur introuvable.' });
    res.json(rows[0]);
  } catch (err) {
    res.status(500).json({ error: err.message });
  }
}

export async function deleteSupplier(req, res) {
  try {
    const { id } = req.params;
    await run('DELETE FROM suppliers WHERE id = $1', [id]);
    res.status(204).end();
  } catch (err) {
    res.status(500).json({ error: err.message });
  }
}