infra

func NewDBConnection ¶

func NewDBConnection(
	cnf *config.DB,
	appEnv string,
) (*gorm.DB, error)

Add appEnv as a parameter for dependency-injected environment

func NewExchangeRateSystem ¶

func NewExchangeRateSystem(
	logger *slog.Logger,
	cfg config.ExchangeRate,
) (domain.CurrencyConverter, error)

NewExchangeRateSystem creates a complete exchange rate system with providers,

cache, and converter