[PLT-6496] Remove System Console and config settings for image height and width (#6688)

* remove System Console and config settings for image height and width

* add constants and update config.json

* updated as per review

app/file.go

@@ -53,7 +53,10 @@ const (
 	RotatedCCWMirrored = 7
 	RotatedCW          = 8
 
-	MaxImageSize = 6048 * 4032 // 24 megapixels, roughly 36MB as a raw image
+	MaxImageSize                 = 6048 * 4032 // 24 megapixels, roughly 36MB as a raw image
+	IMAGE_THUMBNAIL_PIXEL_WIDTH  = 120
+	IMAGE_THUMBNAIL_PIXEL_HEIGTH = 100
+	IMAGE_PREVIEW_PIXEL_WIDTH    = 1024
 )
 
 // Similar to s3.New() but allows initialization of signature v2 or signature v4 client.
@@ -553,18 +556,13 @@ func getImageOrientation(input io.Reader) (int, error) {
 }
 
 func generateThumbnailImage(img image.Image, thumbnailPath string, width int, height int) {
-	thumbWidth := float64(utils.Cfg.FileSettings.ThumbnailWidth)
-	thumbHeight := float64(utils.Cfg.FileSettings.ThumbnailHeight)
-	imgWidth := float64(width)
-	imgHeight := float64(height)
-
 	var thumbnail image.Image
-	if imgHeight < thumbHeight && imgWidth < thumbWidth {
+	if height < IMAGE_THUMBNAIL_PIXEL_HEIGTH && width < IMAGE_THUMBNAIL_PIXEL_WIDTH {
 		thumbnail = img
-	} else if imgHeight/imgWidth < thumbHeight/thumbWidth {
-		thumbnail = imaging.Resize(img, 0, utils.Cfg.FileSettings.ThumbnailHeight, imaging.Lanczos)
+	} else if height/width < IMAGE_THUMBNAIL_PIXEL_HEIGTH/IMAGE_THUMBNAIL_PIXEL_WIDTH {
+		thumbnail = imaging.Resize(img, 0, IMAGE_THUMBNAIL_PIXEL_HEIGTH, imaging.Lanczos)
 	} else {
-		thumbnail = imaging.Resize(img, utils.Cfg.FileSettings.ThumbnailWidth, 0, imaging.Lanczos)
+		thumbnail = imaging.Resize(img, IMAGE_THUMBNAIL_PIXEL_WIDTH, 0, imaging.Lanczos)
 	}
 
 	buf := new(bytes.Buffer)
@@ -581,8 +579,9 @@ func generateThumbnailImage(img image.Image, thumbnailPath string, width int, he
 
 func generatePreviewImage(img image.Image, previewPath string, width int) {
 	var preview image.Image
-	if width > int(utils.Cfg.FileSettings.PreviewWidth) {
-		preview = imaging.Resize(img, utils.Cfg.FileSettings.PreviewWidth, utils.Cfg.FileSettings.PreviewHeight, imaging.Lanczos)
+
+	if width > IMAGE_PREVIEW_PIXEL_WIDTH {
+		preview = imaging.Resize(img, IMAGE_PREVIEW_PIXEL_WIDTH, 0, imaging.Lanczos)
 	} else {
 		preview = img
 	}