import dotenv from 'dotenv';
import pg from 'pg';

dotenv.config();

const { Pool } = pg;

const heatmapPool = new Pool({
  host: process.env.HEATMAP_DB_HOST,
  port: Number(process.env.HEATMAP_DB_PORT) || 5432,
  user: process.env.HEATMAP_DB_USER,
  password: process.env.HEATMAP_DB_PASSWORD,
  database: process.env.HEATMAP_DB_NAME,
  ssl: process.env.HEATMAP_DB_SSL === 'true'
    ? { rejectUnauthorized: false }
    : false,
  max: 5,
  idleTimeoutMillis: 30_000,
  connectionTimeoutMillis: 10_000,
  statement_timeout: 30_000,
  application_name: 'ln-bi-vehicle-heatmap',
  options: '-c timezone=Asia/Shanghai -c default_transaction_read_only=on',
});

heatmapPool.on('error', (error) => {
  console.error('[vehicle-heatmap] idle PostgreSQL client error:', error);
});

export default heatmapPool;