application

type CartAppInterface interface {
	ApplyPromotion(cartId int, promotionId int) (*entity.Cart, error)
	Display(cartId int) (*dto.DisplayCartDTO, error)
	ResetCart(cartId int) (*entity.Cart, error)
	AddItem(cartId int, item *entity.Item) (*entity.Cart, error)
	UpdateCartPriceAndQuantity(cart *entity.Cart) (*entity.Cart, error)
	AddVasItem(vasItem *entity.VasItem) (*entity.Cart, error)
	RemoveItem(itemId int) (*entity.Cart, error)
	RemoveVasItem(vasItemId int) (*entity.Cart, error)
}

type CategoryAppInterface interface {
	List() ([]*entity.Category, error)
	Create(category *entity.Category) (*entity.Category, error)
	GetByID(id int) (*entity.Category, error)
}

type ItemAppInterface interface {
	ListByCartId(int) ([]*entity.Item, error)
	Create(*entity.Item) (*entity.Item, error)
	Update(*entity.Item) (*entity.Item, error)
	GetById(int) (*entity.Item, error)
	Delete(int) error
}

type PromotionAppInterface interface {
	List() ([]*entity.Promotion, error)
	Create(*entity.Promotion) (*entity.Promotion, error)
	GetById(int) (*entity.Promotion, error)
}

type VasItemAppInterface interface {
	ListByItemId(int) ([]*entity.VasItem, error)
	GetById(int) (*entity.VasItem, error)
	Create(*entity.VasItem) (*entity.VasItem, error)
	DeleteById(int) error
}