const pool = require('../config/db');
const cheerio = require('cheerio');
const { logActivity } = require('../services/activityLog');

const MONTHS_FR = {
  'janv': '01', 'janvier': '01', 'févr': '02', 'février': '02', 'fevrier': '02',
  'mars': '03', 'avr': '04', 'avril': '04', 'mai': '05', 'juin': '06',
  'juil': '07', 'juillet': '07', 'août': '08', 'aout': '08',
  'sept': '09', 'septembre': '09', 'oct': '10', 'octobre': '10',
  'nov': '11', 'novembre': '11', 'déc': '12', 'décembre': '12', 'decembre': '12'
};

function parseFrenchDate(str) {
  const m = str.trim().match(/^(\d+)\s+(\S+)\s+(\d{4})$/);
  if (!m) return null;
  const month = MONTHS_FR[m[2].toLowerCase().replace(/\.$/, '')];
  if (!month) return null;
  return `${m[3]}-${month}-${m[1].padStart(2, '0')}`;
}

exports.list = async (req, res) => {
  try {
    const [rows] = await pool.query('SELECT * FROM evenements ORDER BY date ASC');
    res.json(rows);
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Server error' });
  }
};

exports.create = async (req, res) => {
  try {
    const { date, nom_evenement, lieu, horaire } = req.body;
    if (!date || !nom_evenement) {
      return res.status(400).json({ error: 'Date and name required' });
    }
    const [result] = await pool.query(
      'INSERT INTO evenements (date, nom_evenement, lieu, horaire) VALUES (?, ?, ?, ?)',
      [date, nom_evenement, lieu || null, horaire || null]
    );
    res.status(201).json({ id: result.insertId, message: 'Event created' });
    logActivity(req, 'evenement_ajout', { date, nom_evenement });
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Server error' });
  }
};

exports.update = async (req, res) => {
  try {
    const { date, nom_evenement, lieu, horaire } = req.body;
    await pool.query(
      'UPDATE evenements SET date = ?, nom_evenement = ?, lieu = ?, horaire = ? WHERE id = ?',
      [date, nom_evenement, lieu || null, horaire || null, req.params.id]
    );
    res.json({ message: 'Updated' });
    logActivity(req, 'evenement_modification', { id: req.params.id, date, nom_evenement });
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Server error' });
  }
};

exports.remove = async (req, res) => {
  try {
    await pool.query('DELETE FROM evenements WHERE id = ?', [req.params.id]);
    res.json({ message: 'Deleted' });
    logActivity(req, 'evenement_suppression', { id: req.params.id });
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Server error' });
  }
};

exports.deletePast = async (req, res) => {
  try {
    const [result] = await pool.query('DELETE FROM evenements WHERE date < CURDATE()');
    res.json({ message: `${result.affectedRows} événement(s) supprimé(s)` });
    logActivity(req, 'evenements_passes_supprimes', { count: result.affectedRows });
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Server error' });
  }
};

exports.scrape = async (req, res) => {
  try {
    const url = 'https://www.rencontres-dirigeants.com/nos-rencontres?region=11&startAt=&endAt=&dateRange=&format=&agency%5B%5D=289&department=';
    const resp = await fetch(url);
    const html = await resp.text();
    const $ = cheerio.load(html);

    const candidates = [];

    $('article, [class*="card"], [class*="event"], [class*="rencontre"]').each((i, el) => {
      const text = $(el).text();
      const lines = text.split('\n').map(l => l.trim()).filter(Boolean);

      let location = '', dateStr = '', timeStr = '';
      for (const line of lines) {
        if (!location && line.length > 3 && line[0] === line[0].toUpperCase() && !line.includes('€') && !line.includes('Participation') && !line.includes('places')) {
          location = line;
        }
        const dateMatch = line.match(/(\d{1,2}\s+\S+\s+\d{4})/);
        if (dateMatch && !dateStr) dateStr = dateMatch[1];
        const timeMatch = line.match(/(\d{2}h\d{2})\s*[àa]\s*(\d{2}h\d{2})/);
        if (timeMatch && !timeStr) timeStr = `${timeMatch[1]} - ${timeMatch[2]}`;
      }

      if (!dateStr) return;
      const isoDate = parseFrenchDate(dateStr);
      if (!isoDate) return;
      candidates.push({ isoDate, location, timeStr });
    });

    const imported = [];
    for (const c of candidates) {
      const [existing] = await pool.query('SELECT id FROM evenements WHERE date = ? AND nom_evenement LIKE ?', [c.isoDate, `%Rencontre%`]);
      if (existing.length > 0) continue;
      const title = c.location ? `Rencontre dirigeants - ${c.location}` : 'Rencontre dirigeants Dynabuy';
      await pool.query(
        'INSERT INTO evenements (date, nom_evenement, lieu, horaire) VALUES (?, ?, ?, ?)',
        [c.isoDate, title, c.location || null, c.timeStr || null]
      );
      imported.push({ date: c.isoDate, title, location: c.location, time: c.timeStr });
    }

    res.json({ message: `${imported.length} événement(s) importé(s)`, events: imported });
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Erreur lors de l\'import: ' + err.message });
  }
};