const { Pool } = require('pg');
const pool = new Pool({ connectionString: 'postgresql://edumanager:EduManager2026!Seguro@150.230.87.131:5432/edumanager' });
async function fixAll() {
  const client = await pool.connect();
  try {
    const { rowCount } = await client.query(`
      UPDATE frequencias 
      SET data = data - INTERVAL '3 hours' 
      WHERE EXTRACT(HOUR FROM data) >= 17 
        AND EXTRACT(HOUR FROM data) <= 19 
        AND tipo = 'presence'
    `);
    console.log(`Corrigidas ${rowCount} presenças deslocadas pelo fuso horário (UTC -> BRT).`);
  } finally {
    client.release();
    pool.end();
  }
}
fixAll().catch(console.error);