const { Router } = require('express');
const pool = require('../config/db');
const { authenticate } = require('../middleware/auth');

const router = Router();

router.get('/:date', authenticate, async (req, res) => {
  if (req.user.role !== 'admin') return res.status(403).json({ error: 'Admin seulement' });
  try {
    const { date } = req.params;
    const [yr, mo, dy] = date.split('-');
    const dateKey = `${dy}${mo}${yr}`;
    const [rows] = await pool.query(
      'SELECT id, slide_key, content, hidden, sort_order FROM presentation_overrides WHERE date_key = ? ORDER BY sort_order ASC',
      [dateKey]
    );
    res.json(rows);
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Erreur serveur' });
  }
});

router.put('/:date', authenticate, async (req, res) => {
  if (req.user.role !== 'admin') return res.status(403).json({ error: 'Admin seulement' });
  try {
    const { date } = req.params;
    const { overrides } = req.body;
    const [yr, mo, dy] = date.split('-');
    const dateKey = `${dy}${mo}${yr}`;
    if (!Array.isArray(overrides)) return res.status(400).json({ error: 'overrides doit être un tableau' });

    for (const ov of overrides) {
      const { slide_key, content, hidden, sort_order } = ov;
      if (!slide_key) continue;
      await pool.query(
        `INSERT INTO presentation_overrides (date_key, slide_key, content, hidden, sort_order)
         VALUES (?, ?, ?, ?, ?)
         ON DUPLICATE KEY UPDATE content = VALUES(content), hidden = VALUES(hidden), sort_order = VALUES(sort_order)`,
        [dateKey, slide_key, content ? JSON.stringify(content) : null, hidden ? 1 : 0, sort_order ?? 0]
      );
    }

    const [rows] = await pool.query(
      'SELECT slide_key, content, hidden, sort_order FROM presentation_overrides WHERE date_key = ? ORDER BY sort_order ASC',
      [dateKey]
    );
    res.json({ overrides: rows });
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Erreur serveur' });
  }
});

module.exports = router;