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

// Startseite - Tarife anzeigen
router.get('/', async (req, res) => {
  try {
    const [tariffs] = await db.query(
      'SELECT * FROM tariffs WHERE active = 1 ORDER BY price_monthly ASC'
    );
    res.render('index', { tariffs, error: null });
  } catch (err) {
    console.error(err);
    res.render('index', { tariffs: [], error: 'Tarife konnten nicht geladen werden.' });
  }
});

// Anmelde-Formular für gewählten Tarif
router.get('/anmelden/:tariffId', async (req, res) => {
  try {
    const [tariffs] = await db.query(
      'SELECT * FROM tariffs WHERE id = ? AND active = 1',
      [req.params.tariffId]
    );
    if (tariffs.length === 0) {
      return res.redirect('/');
    }
    res.render('signup', { tariff: tariffs[0] });
  } catch (err) {
    console.error(err);
    res.redirect('/');
  }
});

// Bestätigung ausstehend
router.get('/bestaetigung-ausstehend', (req, res) => {
  res.render('confirmation-pending', { email: req.query.email || '' });
});

// E-Mail Bestätigung
router.get('/confirm/:token', async (req, res) => {
  try {
    const [rows] = await db.query(
      "SELECT * FROM memberships WHERE confirmation_token = ? AND status = 'pending'",
      [req.params.token]
    );
    if (rows.length === 0) {
      const [confirmed] = await db.query(
        "SELECT * FROM memberships WHERE confirmation_token = ? AND status = 'active'",
        [req.params.token]
      );
      if (confirmed.length > 0) return res.render('confirmation-success');
      return res.render('confirmation-invalid');
    }
    const member = rows[0];
    const hoursDiff = (new Date() - new Date(member.created_at)) / (1000 * 60 * 60);
    if (hoursDiff > 24) return res.render('confirmation-invalid');
    await db.query(
      "UPDATE memberships SET status='active', confirmed_at=NOW() WHERE id=?",
      [member.id]
    );
    res.render('confirmation-success');
  } catch (err) {
    console.error('Confirm error:', err);
    res.render('error', { message: 'Fehler bei der Bestätigung.' });
  }
});

// Erfolgsseite
router.get('/erfolg', (req, res) => {
  res.render('success');
});

module.exports = router;