private async Task CreatePostItem()

in Facebook/FacebookSDK/JobProcessorFB.cs [158:221]
57 lines of code
7 McCabe index (conditional complexity)

        private async Task<Item> CreatePostItem(PostFB post, string pageId, string pageName, ConnectorTask taskInfo, List<ItemMetadata> itemMetadata)
        {
            Item postItem = new Item()
            {
                SchemaVersion = new Version(1, 0),
                Id = post.Id,
                ContainerId = pageId,
                ContainerName = pageName,
                SourceType = "Facebook",
                ItemType = "Post",
                ContentType = ContentType.Text,
                Content = post.Message,
                ParentId = string.Empty,
                ThreadId = post.Id,
                SentTimeUtc = DateTime.Parse(post.CreatedTime),
                Sender = ToItemUser(post.From),
                NumOfLikes = post.Likes?.Summary?.TotalCount ?? 0,
                MessagePreviewText = post.Message,
                Recipients = Array.Empty<User>(),
            };

            if (post.Attachments != null)
            {
                postItem.ContentAttachments = new List<ContentAttachment>();
                if (post.Attachments.Data?[0]?.Media == null)
                {
                    AttachmentDataFB[] attachmentData = post.Attachments.Data?[0]?.Subattachments?.Data;
                    foreach (AttachmentDataFB attachmentItem in attachmentData)
                    {
                        string downloadedContent = await this.downloader.DownloadFileAsBase64EncodedString(attachmentItem.Media?.Image?.Src);

                        ContentAttachment attachment = new ContentAttachment()
                        {
                            AttachmentFileName = FetchNameFromUri(attachmentItem.Media?.Image?.Src),
                            AttachmentType = attachmentItem.Type,
                            Content = downloadedContent,
                            Uri = new Uri(attachmentItem.Media?.Image?.Src),
                        };

                        postItem.ContentAttachments.Add(attachment);
                    }
                }
                else
                {
                    // only one video allowed per post, checking attachment type
                    string attachmentType = post.Attachments.Data[0].Type;
                    string downloadedContent = await this.downloader.DownloadFileAsBase64EncodedString(post.Attachments.Data[0].Media?.Image?.Src);

                    ContentAttachment attachment = new ContentAttachment()
                    {
                        AttachmentFileName = attachmentType.Contains("share") ? "safe_image.jpg" : FetchNameFromUri(attachmentType.Contains("video") ? post.Attachments.Data[0].Media?.Source : post.Attachments.Data[0].Media?.Image?.Src),
                        AttachmentType = attachmentType,
                        Content = downloadedContent,
                        Uri = new Uri(attachmentType.Contains("video") ? post.Attachments.Data[0].Url : post.Attachments.Data[0].Media?.Image?.Src),
                    };

                    postItem.ContentAttachments.Add(attachment);
                }
            }

            string fileName = await uploader.UploadItem(taskInfo.JobId, taskInfo.TaskId, postItem);
            itemMetadata.Add(new ItemMetadata(postItem.Id, postItem.SentTimeUtc, fileName));
            return postItem;
        }