const express = require('express');
const router = express.Router();
const db = require('../db');

router.get('/', (req, res) => {
  const folders = db.prepare('SELECT * FROM folders ORDER BY sort_order, name').all();
  res.json(folders);
});

router.post('/', (req, res) => {
  const { name } = req.body;
  if (!name || !name.trim()) return res.status(400).json({ error: 'Name is required' });
  const info = db.prepare('INSERT INTO folders (name) VALUES (?)').run(name.trim());
  const folder = db.prepare('SELECT * FROM folders WHERE id = ?').get(info.lastInsertRowid);
  res.status(201).json(folder);
});

router.put('/:id', (req, res) => {
  const { name } = req.body;
  db.prepare('UPDATE folders SET name = ? WHERE id = ?').run(name, req.params.id);
  res.json(db.prepare('SELECT * FROM folders WHERE id = ?').get(req.params.id));
});

router.delete('/:id', (req, res) => {
  db.prepare('DELETE FROM folders WHERE id = ?').run(req.params.id);
  res.status(204).end();
});

module.exports = router;