package database

import (
	"fmt"
	"time"

	"a301_server/pkg/config"
	"gorm.io/driver/mysql"
	"gorm.io/gorm"
)

func ConnectMySQL() (*gorm.DB, error) {
	c := config.C
	dsn := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s?charset=utf8mb4&parseTime=True&loc=UTC",
		c.DBUser, c.DBPassword, c.DBHost, c.DBPort, c.DBName,
	)
	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
	if err != nil {
		return nil, err
	}

	sqlDB, err := db.DB()
	if err != nil {
		return nil, fmt.Errorf("sql.DB 획득 실패: %w", err)
	}
	sqlDB.SetMaxOpenConns(25)
	sqlDB.SetMaxIdleConns(10)
	sqlDB.SetConnMaxLifetime(5 * time.Minute)

	return db, nil
}