package db

import (
	"context"
	"fmt"
	"time"

	"github.com/jackc/pgx/v5/pgxpool"
)

var ConnPool *pgxpool.Pool

func InitDB(connString string) error {
	poolConfig, err := pgxpool.ParseConfig(connString)
	if err != nil {
		return fmt.Errorf("error while parsing connection string: %w", err)
	}

	poolConfig.MaxConns = 100
	poolConfig.MinConns = 0
	poolConfig.MaxConnLifetime = time.Hour
	poolConfig.HealthCheckPeriod = 30 * time.Second

	ConnPool, err = pgxpool.NewWithConfig(context.Background(), poolConfig)
	if err != nil {
		return fmt.Errorf("error while initializing DB connections pool: %w", err)
	}
	return nil
}