service

type AuthService interface {
	VerifyCredential(email string, password string) interface{}
	CreateUser(user dto.UserCreateDTO) model.User
	FindEmail(email string) model.User
	IsDuplicateEmail(email string) bool
}

type BookService interface {
	InsertBook(book dto.BookCreateDTO) model.Book
	UpdateBook(book dto.BookUpdateDTO) model.Book
	DeleteBook(book model.Book)
	GetAll() []model.Book
	FindBookByID(id uint64) model.Book
	AuthorizeForEdit(userID string, bookID uint64) bool
}

type JWTService interface {
	GenerateToken(userID string) string
	ValidateToken(token string) (*jwt.Token, error)
}

type UserService interface {
	UpdateUser(user dto.UserUpdateDTO) model.User
	GetUser(userID string) model.User
}