package models

// BookWork represents the many-to-many relationship between books and works
type BookWork struct {
	BaseModel
	BookID uint `gorm:"index;uniqueIndex:uniq_book_work"`
	Book   *Book `gorm:"foreignKey:BookID"`
	WorkID uint `gorm:"index;uniqueIndex:uniq_book_work"`
	Work   *Work `gorm:"foreignKey:WorkID"`
	Order  int   `gorm:"default:0"` // For ordering works in books
}

// AuthorCountry represents the many-to-many relationship between authors and countries
type AuthorCountry struct {
	BaseModel
	AuthorID  uint `gorm:"index;uniqueIndex:uniq_author_country"`
	Author    *Author `gorm:"foreignKey:AuthorID"`
	CountryID uint `gorm:"index;uniqueIndex:uniq_author_country"`
	Country   *Country `gorm:"foreignKey:CountryID"`
}

// WorkAuthor represents authorship with role and order for a work
type WorkAuthor struct {
	BaseModel
	WorkID   uint `gorm:"index;uniqueIndex:uniq_work_author_role"`
	Work     *Work `gorm:"foreignKey:WorkID"`
	AuthorID uint `gorm:"index;uniqueIndex:uniq_work_author_role"`
	Author   *Author `gorm:"foreignKey:AuthorID"`
	Role     string  `gorm:"size:50;default:'author';uniqueIndex:uniq_work_author_role"`
	Ordinal  int     `gorm:"default:0"`
}

// BookAuthor represents book-level contributor role and order
type BookAuthor struct {
	BaseModel
	BookID   uint `gorm:"index;uniqueIndex:uniq_book_author_role"`
	Book     *Book `gorm:"foreignKey:BookID"`
	AuthorID uint `gorm:"index;uniqueIndex:uniq_book_author_role"`
	Author   *Author `gorm:"foreignKey:AuthorID"`
	Role     string  `gorm:"size:50;default:'author';uniqueIndex:uniq_book_author_role"`
	Ordinal  int     `gorm:"default:0"`
}