book

type Book struct {
	ID       string `db:"id" json:"id"`
	ISBN     string `db:"isbn" json:"isbn"`
	Title    string `db:"title" json:"title"`
	Author   string `db:"author" json:"author"`
	Category string `db:"category" json:"category"`
}

type NewBook struct {
	ISBN     string `json:"isbn" validate:"required"`
	Title    string `json:"title" validate:"required"`
	Author   string `json:"author" validate:"required"`
	Category string `json:"category"`
}

type Repository interface {
	GetAll() ([]Book, error)
	GetById(id string) (*Book, error)
	Search(sp SearchParams, sortOrder string, limit, offset int) ([]Book, error)
	Create(bk *Book) error
	Update(bk *Book) error
	Destroy(id string) error
}

type SearchParams struct {
	ISBN     string
	Title    string
	Author   string
	Category string
}

type Service interface {
	GetAll() ([]Book, error)
	GetById(id string) (*Book, error)
	Search(sp SearchParams, sort, order, limitStr, offsetStr string) ([]Book, error)
	Create(nb *NewBook) (*Book, error)
	Update(id string, ub UpdateBook) error
	Destroy(id string) error
}

type UpdateBook struct {
	ISBN     string  `json:"isbn"`
	Title    string  `json:"title"`
	Author   string  `json:"author"`
	Category *string `json:"category"`
}