repository

type Book struct {
	gorm.Model

	// An author of the book.
	Author string `json:"author,omitempty"`
	// A book title.
	Title string `json:"title,omitempty"`

	// The shelf Id
	ShelfId int64 `json:"shelf_id,omitempty"`
}

type Repository interface {
	AddShelf(s Shelf) (*Shelf, error)
	AddBook(b Book) (*Book, error)
	FindBook(id int64) (Book, error)
	FindShelf(id int64) (Shelf, error)
}

type SQLiteRepository struct {
	*gorm.DB
}

type Shelf struct {
	gorm.Model
	// Theme the theme of the shelve
	Theme string `json:"theme, omitempty"`
	Books []Book `gorm:"foreignkey:ShelfId"`
}