#!/usr/bin/env node

/**
 * Sync production data to development database
 * 
 * This script copies real data from production to development, filtering out
 * test records to keep the dev database clean for testing.
 */

const { execSync } = require('child_process');
const fs = require('fs');
const os = require('os');
const path = require('path');

const PROD_DB_URL = process.env.PROD_DATABASE_URL;
const DEV_DB_URL = process.env.DEV_DATABASE_URL;

if (!PROD_DB_URL || !DEV_DB_URL) {
  console.error('❌ Missing environment variables');
  console.error('Please set PROD_DATABASE_URL and DEV_DATABASE_URL');
  console.error('');
  console.error('Example:');
  console.error('  PROD_DATABASE_URL="postgresql://user:pass@host:5432/euchre_camp" \\');
  console.error('  DEV_DATABASE_URL="postgresql://user:pass@host:5432/euchre_camp_dev" \\');
  console.error('  node scripts/sync-prod-to-dev.js');
  process.exit(1);
}

if (PROD_DB_URL.includes('_dev') || PROD_DB_URL.includes('_ci')) {
  console.error('❌ PROD_DATABASE_URL appears to be a non-production database!');
  console.error('   This script should only be used with the production database.');
  process.exit(1);
}

const TEST_PATTERNS = {
  players: [
    '%Test%',
    '%Setup%',
    '%Home Test%',
    '%Home Match Player%',
    '%Admin User%',
    '%NinePart%',
    '%Nine Part%',
    '%Test Player%',
    '%TestUser%',
    '%Cucumber%',
    '%Config Admin%',
  ],
  events: [
    '%Test%',
    '%Setup%',
    '%Recent%',
    '%Test Tournament%',
    '%Cucumber%',
  ],
  users: [
    '%test%',
    '%setup%',
    '%cucumber%',
    '%TestUser%',
  ]
};

function buildLikeClause(patterns) {
  return patterns.map(p => `name LIKE '${p}'`).join(' OR ');
}

function buildEmailLikeClause(patterns) {
  return patterns.map(p => `email LIKE '${p}'`).join(' OR ');
}

async function main() {
  console.log('🔄 Syncing production data to development database');
  console.log('====================================================\n');

  const readline = require('readline');
  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
  });

  console.log('⚠️  WARNING: This will OVERWRITE the development database!');
  console.log('   Production data will be copied, with test records excluded.');
  console.log('');
  console.log('Source:', PROD_DB_URL.replace(/:[^:@]+@/, ':***@'));
  console.log('Target:', DEV_DB_URL.replace(/:[^:@]+@/, ':***@'));
  console.log('');

  rl.question('Type "sync" to confirm: ', async (answer) => {
    if (answer !== 'sync') {
      console.log('❌ Cancelled');
      rl.close();
      process.exit(0);
    }

    rl.close();

    try {
      console.log('\n📦 Dumping production data...');
      
      const dumpFile = path.join(os.tmpdir(), `prod_dump_${Date.now()}.sql`);
      
      execSync(`pg_dump "${PROD_DB_URL}" -f "${dumpFile}" --no-owner --no-acl`, {
        stdio: 'inherit'
      });
      console.log('✅ Dump created');

      console.log('\n🗑️  Clearing development database...');
      execSync(`psql "${DEV_DB_URL}" -c "DROP SCHEMA public CASCADE; CREATE SCHEMA public;"`, {
        stdio: 'inherit'
      });
      console.log('✅ Development database cleared');

      console.log('\n📥 Restoring to development database...');
      execSync(`psql "${DEV_DB_URL}" -f "${dumpFile}"`, {
        stdio: 'inherit'
      });
      console.log('✅ Data restored');

      console.log('\n🧹 Cleaning up test records in dev database...');
      
      const playerWhere = buildLikeClause(TEST_PATTERNS.players);
      const eventWhere = buildLikeClause(TEST_PATTERNS.events);
      const userWhere = buildEmailLikeClause(TEST_PATTERNS.users);

      execSync(`psql "${DEV_DB_URL}" -c "DELETE FROM events WHERE (${eventWhere});"`, {
        stdio: 'inherit'
      });
      console.log('   Deleted test events');

      execSync(`psql "${DEV_DB_URL}" -c "DELETE FROM players WHERE (${playerWhere});"`, {
        stdio: 'inherit'
      });
      console.log('   Deleted test players');

      execSync(`psql "${DEV_DB_URL}" -c "DELETE FROM users WHERE (${userWhere}) AND \"playerId\" IS NULL;"`, {
        stdio: 'inherit'
      });
      console.log('   Deleted test users');

      fs.unlinkSync(dumpFile);
      console.log('\n🧹 Cleaned up temporary dump file');

      console.log('\n✅ Sync complete!');
      console.log('\n📊 Summary:');
      console.log('   - Production data copied to development');
      console.log('   - Test records filtered out');
      console.log('   - Development database is now a mirror of production (minus test data)');

    } catch (error) {
      console.error('\n❌ Sync failed:', error.message);
      process.exit(1);
    }
  });
}

main();