package useCases

import "RenewCMS/internal/domain/image"

type ListImageVariantsUseCase struct {
	images   image.Repository
	variants image.VariantRepository
	files    image.VariantFileRepository
	renderer image.VariantRenderer
}

func NewListImageVariantsUseCase(images image.Repository, variants image.VariantRepository, files image.VariantFileRepository, renderer image.VariantRenderer) *ListImageVariantsUseCase {
	return &ListImageVariantsUseCase{images, variants, files, renderer}
}

func (u *ListImageVariantsUseCase) List(id uint32) (ImageVariantList, error) {
	img, err := u.images.Get(id)
	if err != nil {
		return ImageVariantList{}, err
	}
	if isVectorSource(img) {
		return ImageVariantList{Unsupported: unsupportedSVG, Items: []ImageVariantView{}}, nil
	}
	enabled, err := enabledVariants(u.variants)
	if err != nil {
		return ImageVariantList{}, err
	}
	rows, err := currentFiles(u.files, image.StoredName(img.Path))
	if err != nil {
		return ImageVariantList{}, err
	}
	return ImageVariantList{Items: viewsOf(enabled, img, rows, u.renderer.EncodableFormats())}, nil
}