BetterCms.Module.MediaManager.Services.DefaultMediaImageService.UploadImage C# (CSharp) Method

        public MediaImage UploadImage(Guid rootFolderId, string fileName, long fileLength, Stream fileStream, Guid reuploadMediaId, bool overrideUrl = true)
        {
            overrideUrl = false; // TODO: temporary disabling feature #1055.

            var folderName = mediaFileService.CreateRandomFolderName();
            var publicFileName = MediaHelper.RemoveInvalidPathSymbols(MediaImageHelper.CreatePublicFileName(fileName, Path.GetExtension(fileName)));
            var fileExtension = Path.GetExtension(fileName);
            var imageType = ImageHelper.GetImageType(fileExtension);

            MediaImage uploadImage = null;
            var thumbnailFileStream = new MemoryStream();
            Size size;
            Size thumbnailSize = ThumbnailSize;
            long thumbnailImageLength;

            /* Upload standard raster type images */
            if (imageType == ImageType.Raster)
            {
                fileStream = RotateImage(fileStream);
                size = GetSize(fileStream);

                CreatePngThumbnail(fileStream, thumbnailFileStream, ThumbnailSize);
                thumbnailImageLength = thumbnailFileStream.Length;
            }
            /* Upload vector graphics images */
            else
            {
                size = Size.Empty;
                ReadParametersFormVectorImage(fileStream, ref size);
                thumbnailImageLength = fileStream.Length;
                CreateSvgThumbnail(fileStream, thumbnailFileStream, ThumbnailSize);
            }

            try
            {
                if (!reuploadMediaId.HasDefaultValue())
                {
                    // Re-uploading image: Get original image, folder name, file extension, file name
                    uploadImage = (MediaImage)repository.First<MediaImage>(image => image.Id == reuploadMediaId).Clone();
                    uploadImage.IsTemporary = true;

                    // Create new original image and upload file stream to the storage
                    uploadImage = CreateImage(rootFolderId, fileName, fileExtension, Path.GetFileName(fileName), size, fileLength);
                }
                else
                {
                    // Uploading new image
                    // Create new original image and upload file stream to the storage
                    uploadImage = CreateImage(
                        rootFolderId,
                        fileName,
                        fileExtension,
                        Path.GetFileName(fileName),
                        size,
                        fileLength);

                }
                SetThumbnailParameters(uploadImage, thumbnailSize, thumbnailImageLength);
                mediaImageVersionPathService.SetPathForNewOriginal(uploadImage, folderName, publicFileName, imageType);

                unitOfWork.BeginTransaction();
                repository.Save(uploadImage);
                unitOfWork.Commit();

                StartTasksForImage(uploadImage, fileStream, thumbnailFileStream, false);
            }
            finally
            {
                if (thumbnailFileStream != null)
                {
                    thumbnailFileStream.Dispose();
                }
            }

            return uploadImage;
        }