package useCases

import (
	"RenewCMS/internal/domain/image"
	"context"
	"log"
)

type GenerateVariantsOnUploadUseCase struct {
	variants  image.VariantRepository
	generator *ServeVariantUseCase
	logger    *log.Logger
}

func NewGenerateVariantsOnUploadUseCase(variants image.VariantRepository, generator *ServeVariantUseCase, logger *log.Logger) *GenerateVariantsOnUploadUseCase {
	return &GenerateVariantsOnUploadUseCase{variants, generator, logger}
}

func (u *GenerateVariantsOnUploadUseCase) Generate(ctx context.Context, img image.Image) {
	if isVectorSource(img) {
		return
	}
	enabled, err := enabledVariants(u.variants)
	if err != nil {
		u.logger.Printf("listing variants to generate on upload failed: image=%d: %v", img.ID, err)
		return
	}
	storedName := image.StoredName(img.Path)
	for _, variant := range enabled {
		if !variant.GenerateOnUpload {
			continue
		}
		if _, err := u.generator.Generate(ctx, variant, storedName); err != nil {
			u.logger.Printf("generating variant on upload failed: variant=%s image=%d: %v", variant.Name, img.ID, err)
		}
	}
}