public void ProcessRequest(HttpContext context)
        {
            string name = context.Request.QueryString["name"];
            string type = context.Request.QueryString["type"];

            context.Response.AppendHeader("Access-Control-Allow-Origin", "*");

            if (!string.IsNullOrEmpty(context.Request.Headers["X-File-Name"]))
            {
                try
                {
                    BlobStorageService _blobStorageService = new BlobStorageService();

                    string xFileName      = context.Request.Headers["X-File-Name"];
                    string xfileExtention = xFileName.Substring(xFileName.LastIndexOf(".") + 1);

                    if (type == "poster")
                    {
                        int posterCount = _blobStorageService.GetImageFileCount(BlobStorageService.Blob_ImageContainer, name.Replace(" ", "-").ToLower() + "-poster-");

                        string newPosterName = name.ToLower() + "-poster-" + posterCount + "." + xfileExtention;
                        // upload file on blob
                        string uploadedFile = _blobStorageService.UploadImageFileOnBlob(BlobStorageService.Blob_ImageContainer, newPosterName, context.Request.InputStream);

                        context.Response.Write(jss.Serialize(new { Status = "Ok", Message = "file uploaded successfully", FileUrl = newPosterName }));
                    }
                    else
                    {
                        string fileName = name.Replace(" ", "-").ToLower() + "." + xfileExtention;

                        _blobStorageService.DeleteFileFromBlob(BlobStorageService.Blob_ImageContainer, fileName);

                        string uploadedFile = _blobStorageService.UploadImageFileOnBlob(BlobStorageService.Blob_ImageContainer, fileName, context.Request.InputStream);

                        context.Response.Write(jss.Serialize(new { Status = "Ok", Message = "file uploaded successfully", FileUrl = fileName }));
                    }
                }
                catch (Exception ex)
                {
                    context.Response.StatusCode = 500;
                    context.Response.Write(jss.Serialize(new { Status = "Error", Error = ex.Message, Message = "Sorry! An error occured while uploading image on mooc server" }));
                }
            }
        }