refactor: little fixes

pkg/preview/image.go

@@ -9,16 +9,12 @@ import (
 )
 
 const (
-	maxWidthHeight   = 256
-	jpegShrinkFactor = 8
+	maxWidthHeight = 256
 )
 
 var (
-	ErrVipsLoadImage            = errors.New("failed load image")
-	ErrVipsResizeImage          = errors.New("failed resize image")
-	ErrImageDownScale           = errors.New("failed to downscale the image")
-	ErrImageColorSpaceTransform = errors.New("failed to transform the image's color space")
-	ErrImageExport              = errors.New("failed export the image")
+	ErrVipsLoadImage = errors.New("failed load image")
+	ErrImageExport   = errors.New("failed export the image")
 )
 
 func imagePreview(path string) (data, error) {

pkg/preview/preview.go

@@ -151,7 +151,7 @@ func ifMaxPass(maxNewItems *int64) bool {
 	return true
 }
 
-//nolint:cyclop,ireturn,nolintlint //it's very simple method...
+//nolint:cyclop,ireturn,nolintlint
 func (p Previewer) Pull(ctx context.Context, src Source) (Data, error) {
 	defaultPreview := data{}
 

pkg/preview/video.go

@@ -13,12 +13,6 @@ import (
 
 var (
 	ErrPullSnapshot = errors.New("failed to pull snapshot")
-	ErrImageDecode  = errors.New("failed to decode image")
-	ErrImageCopy    = errors.New("failed to copy image")
-	ErrImagesJoin   = errors.New("failed to join images")
-	ErrImageEncode  = errors.New("failed to encode image")
-	ErrImageScale   = errors.New("failed to scale image")
-	ErrBufferCopy   = errors.New("failed to copy buffer")
 )
 
 const (
@@ -80,11 +74,11 @@ func getScreenshots(ctx context.Context, path string, timestamps []time.Duration
 
 	mixerErr := mixerCmd.Wait()
 
-	if producerErr != nil && errors.Is(producerErr, context.Canceled) {
+	if producerErr != nil && !errors.Is(producerErr, context.Canceled) {
 		return nil, fmt.Errorf("producer error [%s] %w", producerErrBuff.String(), producerErr)
 	}
 
-	if mixerErr != nil && errors.Is(mixerErr, context.Canceled) {
+	if mixerErr != nil && !errors.Is(mixerErr, context.Canceled) {
 		return nil, fmt.Errorf("mixer error [%s] %w", mixerErrBuff.String(), mixerErr)
 	}