tercul-backend/internal/data/sql/edition_repository.go

package sql

import (
	"context"
	"errors"
	"tercul/internal/domain"
	"tercul/internal/domain/edition"

	"gorm.io/gorm"
)

type editionRepository struct {
	domain.BaseRepository[domain.Edition]
	db *gorm.DB
}

// NewEditionRepository creates a new EditionRepository.
func NewEditionRepository(db *gorm.DB) edition.EditionRepository {
	return &editionRepository{
		BaseRepository: NewBaseRepositoryImpl[domain.Edition](db),
		db:             db,
	}
}

// ListByBookID finds editions by book ID
func (r *editionRepository) ListByBookID(ctx context.Context, bookID uint) ([]domain.Edition, error) {
	var editions []domain.Edition
	if err := r.db.WithContext(ctx).Where("book_id = ?", bookID).Find(&editions).Error; err != nil {
		return nil, err
	}
	return editions, nil
}

// FindByISBN finds an edition by ISBN
func (r *editionRepository) FindByISBN(ctx context.Context, isbn string) (*domain.Edition, error) {
	var edition domain.Edition
	if err := r.db.WithContext(ctx).Where("isbn = ?", isbn).First(&edition).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, ErrEntityNotFound
		}
		return nil, err
	}
	return &edition, nil
}