package db

import (
	"database/sql"
	"fmt"
	"time"

	_ "github.com/go-sql-driver/mysql"

	"query-database/api/internal/config"
)

func OpenMySQL(cfg config.Config) (*sql.DB, error) {
	dsn := fmt.Sprintf("%s:%s@tcp(%s:%s)/?parseTime=true&multiStatements=true&charset=utf8mb4", cfg.MySQLUser, cfg.MySQLPassword, cfg.MySQLHost, cfg.MySQLPort)
	db, err := sql.Open("mysql", dsn)
	if err != nil {
		return nil, err
	}
	db.SetMaxOpenConns(10)
	db.SetConnMaxLifetime(5 * time.Minute)
	if err := db.Ping(); err != nil {
		return nil, err
	}
	return db, nil
}