import { Router } from 'express';
import db from '../db/db';

const router = Router();

// Get meals for a date range (e.g. ?start=2024-01-01&end=2024-01-31)
router.get('/', (req, res) => {
  const { start, end } = req.query as { start?: string; end?: string };
  if (start && end) {
    return res.json(db.prepare('SELECT * FROM meals WHERE date >= ? AND date <= ? ORDER BY date ASC').all(start, end));
  }
  res.json(db.prepare('SELECT * FROM meals ORDER BY date ASC').all());
});

router.get('/:date', (req, res) => {
  const row = db.prepare('SELECT * FROM meals WHERE date = ?').get(req.params.date);
  if (!row) return res.status(404).json({ error: 'No meal for this date' });
  res.json(row);
});

router.put('/:date', (req, res) => {
  const { title, description, recipe_url } = req.body as { title: string; description?: string; recipe_url?: string };
  if (!title?.trim()) return res.status(400).json({ error: 'Title is required' });
  db.prepare(`
    INSERT INTO meals (date, title, description, recipe_url) VALUES (?, ?, ?, ?)
    ON CONFLICT(date) DO UPDATE SET title=excluded.title, description=excluded.description, recipe_url=excluded.recipe_url
  `).run(req.params.date, title.trim(), description ?? null, recipe_url ?? null);
  res.json(db.prepare('SELECT * FROM meals WHERE date = ?').get(req.params.date));
});

router.delete('/:date', (req, res) => {
  const result = db.prepare('DELETE FROM meals WHERE date = ?').run(req.params.date);
  if (result.changes === 0) return res.status(404).json({ error: 'No meal for this date' });
  res.status(204).end();
});

export default router;