port

type Transactor interface {
	// WithinTransaction runs a function within a database transaction.
	//
	// Transaction is propagated in the context,
	// so it is important to propagate it to underlying repositories.
	// Function commits if error is nil, and rollbacks if not.
	// It returns the same error.
	WithinTransaction(context.Context, func(ctx context.Context) error) error
}

type WalletRepo interface {
	Transactor
	CreateWallet(ctx context.Context, balance int64) (wallet domain.Wallet, err error)
	GetWalletByID(ctx context.Context, id int64) (wallet domain.Wallet, err error)
}

type WalletUseCase interface {
	CreateWallet(ctx context.Context, balance int64) (wallet domain.Wallet, err error)
	GetBalanceByID(ctx context.Context, id int64) (balance int64, err error)
}