entities

type Base struct {
	ID        string    `json:"id" valid:"uuid"`
	CreatedAt time.Time `json:"created_at" valid:"-"`
	UpdatedAt time.Time `json:"updated_at" valid:"-"`
}

type Book struct {
	Base
	Title       string  `json:"title" valid:"required"`
	Author      string  `json:"author" valid:"required"`
	Price       float64 `json:"price" valid:"required"`
	Description string  `json:"description" valid:"required"`
	UserID      string  `json:"userId" valid:"required"`
}