/// <summary>
        /// 准备上传
        /// </summary>
        /// <param name="filePath"></param>
        /// <param name="targetId"></param>
        /// <param name="albumId"></param>
        public Upload UploadPrepare(string targetId, string albumId, AlbumType albumType, FileType fileType, string target, string filePath)
        {
            FileInfo fileInfo     = new FileInfo(filePath);
            string   fileName     = fileInfo.Name;
            string   lastModified = new FileInfo(filePath).LastWriteTime.ToString();
            var      identifier   = GenerateMD5($"{AccountManager.Instance.Account}{fileName}{filePath}{lastModified}");
            Upload   uploader;
            var      isUploading = IsUploading(targetId, albumId, identifier);

            //校验是否在正在上传列表
            if (isUploading.Item1)
            {
                uploader = isUploading.Item2;
            }
            else
            {
                UploadManager.AddUploader(new Upload()
                {
                    UserName    = AccountManager.Instance.Account,
                    FileName    = fileName,
                    FileSize    = (int)fileInfo.Length,
                    FileType    = (int)fileType,
                    TargetId    = targetId,
                    AlbumId     = albumId,
                    AlbumType   = (int)albumType,
                    Progress    = 0,
                    Identifier  = identifier,
                    ChunkNumber = 0,
                    FilePath    = filePath,
                    Target      = target
                });
                uploader = UploadManager.GetUploader(targetId, albumId, identifier);
            }
            return(uploader);
        }