public async Task GetInstallStatusAsync()

in WindowsDevicePortalWrapper/WindowsDevicePortalWrapper.UniversalWindows/Core/AppDeployment.cs [33:110]
66 lines of code
9 McCabe index (conditional complexity)

        public async Task<ApplicationInstallStatus> GetInstallStatusAsync()
        {
            ApplicationInstallStatus status = ApplicationInstallStatus.None;

            Uri uri = Utilities.BuildEndpoint(
                this.deviceConnection.Connection,
                InstallStateApi);

            HttpBaseProtocolFilter httpFilter = new HttpBaseProtocolFilter();
            httpFilter.AllowUI = false;

            if (this.deviceConnection.Credentials != null)
            {
                httpFilter.ServerCredential = new PasswordCredential();
                httpFilter.ServerCredential.UserName = this.deviceConnection.Credentials.UserName;
                httpFilter.ServerCredential.Password = this.deviceConnection.Credentials.Password;
            }

            using (HttpClient client = new HttpClient(httpFilter))
            {
                this.ApplyHttpHeaders(client, HttpMethods.Get);

                using (HttpResponseMessage response = await client.GetAsync(uri))
                {
                    if (response.IsSuccessStatusCode)
                    {
                        if (response.StatusCode == HttpStatusCode.Ok)
                        {
                            // Status code: 200
                            if (response.Content != null)
                            {
                                Stream dataStream = null;

                                IBuffer dataBuffer = null;
                                using (IHttpContent messageContent = response.Content)
                                {
                                    dataBuffer = await messageContent.ReadAsBufferAsync();

                                    if (dataBuffer != null)
                                    {
                                        dataStream = dataBuffer.AsStream();
                                    }
                                }

                                if (dataStream != null)
                                {
                                    HttpErrorResponse errorResponse = DevicePortal.ReadJsonStream<HttpErrorResponse>(dataStream);

                                    if (errorResponse.Success)
                                    {
                                        status = ApplicationInstallStatus.Completed;
                                    }
                                    else
                                    {
                                        throw new DevicePortalException(response.StatusCode, errorResponse, uri);
                                    }
                                }
                                else
                                {
                                    throw new DevicePortalException(HttpStatusCode.Conflict, "Failed to deserialize GetInstallStatus response.");
                                }
                            }
                        }
                        else if (response.StatusCode == HttpStatusCode.NoContent)
                        {
                            // Status code: 204
                            status = ApplicationInstallStatus.InProgress;
                        }
                    }
                    else
                    {
                        throw await DevicePortalException.CreateAsync(response);
                    }
                }
            }
    
            return status;
        }