import { pool } from '../db.js';

const TOTAL_TICKETS = 500000;
const BATCH_SIZE = 1000;

const PRIZE_DISTRIBUTION = {
  'INFUSEUR': { percentage: 0.60, name: 'Infuseur à thé' },
  'THE_GRATUIT': { percentage: 0.20, name: 'Thé détox/infusion 100g' },
  'THE_SIGNATURE': { percentage: 0.10, name: 'Thé signature 100g' },
  'COFFRET_DECOUVERTE': { percentage: 0.06, name: 'Coffret découverte 39€' },
  'COFFRET_PRESTIGE': { percentage: 0.04, name: 'Coffret prestige 69€' }
};

const generateCode = () => {
  // Format: TT + 8 caractères alphanumériques mélangés (ex: TT11BA22KO)
  // Mélange de chiffres et lettres de manière aléatoire

  const letters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
  const digits = '0123456789';
  const chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';

  let code = 'TT';

  // Générer 8 caractères alphanumériques mélangés
  for (let i = 0; i < 8; i++) {
    const randomChar = chars[Math.floor(Math.random() * chars.length)];
    code += randomChar;
  }

  return code;
};

const generateTickets = async () => {
  try {
    console.log('🎫 Génération de 500,000 tickets Thé Tip Top\n');

    const prizesResult = await pool.query('SELECT id, name, type FROM prizes');
    const prizes = {};
    prizesResult.rows.forEach(p => prizes[p.type] = p);

    const distribution = {};
    let total = 0;

    console.log('📊 DISTRIBUTION:');
    for (const [type, config] of Object.entries(PRIZE_DISTRIBUTION)) {
      const count = Math.floor(TOTAL_TICKETS * config.percentage);
      distribution[type] = count;
      total += count;
      const percent = (config.percentage * 100).toFixed(0);
      const countStr = count.toLocaleString('fr-FR');
      console.log(`  • ${percent}% - ${countStr} tickets - ${config.name}`);
    }

    if (total < TOTAL_TICKETS) {
      const diff = TOTAL_TICKETS - total;
      distribution.infuseur += diff;
      console.log(`\n⚙️  Ajustement: +${diff} tickets ajoutés aux infuseurs`);
    }

    const existing = await pool.query('SELECT COUNT(*) FROM tickets');
    if (parseInt(existing.rows[0].count) > 0) {
      console.log('\n⚠️  Suppression des anciens tickets...');
      await pool.query('DELETE FROM tickets');
      console.log('✅ Anciens tickets supprimés');
    }

    console.log('\n🚀 Génération en cours...\n');

    let generated = 0;
    const start = Date.now();

    for (const [type, count] of Object.entries(distribution)) {
      const prize = prizes[type];
      if (!prize) {
        console.log(`⚠️  Lot "${type}" introuvable, ignoré`);
        continue;
      }

      const prizeCountStr = count.toLocaleString('fr-FR');
      console.log(`📦 ${prize.name}: ${prizeCountStr} tickets`);

      for (let i = 0; i < count; i += BATCH_SIZE) {
        const batch = Math.min(BATCH_SIZE, count - i);
        const values = [];

        for (let j = 0; j < batch; j++) {
          const code = generateCode();
          values.push(`('${code}', '${prize.id}', NULL)`);
        }

        const query = `INSERT INTO tickets (code, prize_id, status) VALUES ${values.join(', ')}`;
        await pool.query(query);
        generated += batch;

        const genStr = generated.toLocaleString('fr-FR');
        const totalStr = TOTAL_TICKETS.toLocaleString('fr-FR');
        process.stdout.write(`\r  Progression: ${genStr} / ${totalStr}`);
      }
      console.log('');
    }

    const duration = ((Date.now() - start) / 1000).toFixed(2);
    const genStr = generated.toLocaleString('fr-FR');
    console.log(`\n✅ Terminé! ${genStr} tickets générés en ${duration}s\n`);

    process.exit(0);
  } catch (error) {
    console.error('❌ Erreur:', error.message);
    console.error(error.stack);
    process.exit(1);
  }
};

generateTickets();