feat: image variants per image

internal/infrastructure/useCases/GenerateVariantsOnUpload.go

@@ -0,0 +1,37 @@
+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)
+		}
+	}
+}