func TestDoPollForAsynchronous_ReturnsErrorForLastErrorResponse(t *testing.T) {
	// Return error code and message if error present in last response
	r1 := newAsynchronousResponse()
	r1.Header.Del(http.CanonicalHeaderKey(headerAsyncOperation))
	r2 := newProvisioningStatusResponse("busy")
	r2.Header.Del(http.CanonicalHeaderKey(headerAsyncOperation))
	r3 := newAsynchronousResponseWithError()
	r3.Header.Del(http.CanonicalHeaderKey(headerAsyncOperation))

	client := mocks.NewSender()
	client.AppendResponse(r1)
	client.AppendAndRepeatResponse(r2, 2)
	client.AppendAndRepeatResponse(r3, 1)

	r, err := autorest.SendWithSender(client, mocks.NewRequest(),
		DoPollForAsynchronous(time.Millisecond))

	expected := makeLongRunningOperationErrorString("InvalidParameter", "tom-service-DISCOVERY-server-base-v1.core.local' is not a valid captured VHD blob name prefix.")
	if err.Error() != expected {
		t.Fatalf("azure: DoPollForAsynchronous failed to return an appropriate error message for an unknown error. \n expected=%q \n got=%q",
			expected, err.Error())
	}

	autorest.Respond(r,
		autorest.ByClosing())
}

// DoPollForAsynchronous returns a SendDecorator that polls if the http.Response is for an Azure
// long-running operation. It will delay between requests for the duration specified in the
// RetryAfter header or, if the header is absent, the passed delay. Polling may be canceled by
// closing the optional channel on the http.Request.
func DoPollForAsynchronous(delay time.Duration) autorest.SendDecorator {
	return func(s autorest.Sender) autorest.Sender {
		return autorest.SenderFunc(func(r *http.Request) (resp *http.Response, err error) {
			resp, err = s.Do(r)
			if err != nil {
				return resp, err
			}

			ps := pollingState{}
			for err == nil {
				err = updatePollingState(resp, &ps)
				if err != nil {
					break
				}
				if ps.hasTerminated() {
					if !ps.hasSucceeded() {
						err = ps
					}
					break
				}

				r, err = newPollingRequest(resp, ps)
				if err != nil {
					return resp, err
				}

				resp, err = autorest.SendWithSender(s, r,
					autorest.AfterDelay(autorest.GetRetryAfter(resp, delay)))
			}

			return resp, err
		})
	}
}

func TestDoPollForAsynchronous_StopsPollingIfItReceivesAnInvalidOperationResource(t *testing.T) {
	r1 := newAsynchronousResponse()
	r2 := newOperationResourceResponse("busy")
	r3 := newOperationResourceResponse("busy")
	r3.Body = mocks.NewBody(operationResourceIllegal)
	r4 := newOperationResourceResponse(operationSucceeded)

	client := mocks.NewSender()
	client.AppendResponse(r1)
	client.AppendAndRepeatResponse(r2, 2)
	client.AppendAndRepeatResponse(r3, 1)
	client.AppendAndRepeatResponse(r4, 1)

	r, err := autorest.SendWithSender(client, mocks.NewRequest(),
		DoPollForAsynchronous(time.Millisecond))

	if client.Attempts() > 4 {
		t.Fatalf("azure: DoPollForAsynchronous failed to stop polling after receiving an invalid OperationResource")
	}
	if err == nil {
		t.Fatalf("azure: DoPollForAsynchronous failed to return an error after receving an invalid OperationResource")
	}

	autorest.Respond(r,
		autorest.ByClosing())
}

// InitiateDeviceAuth initiates a device auth flow. It returns a DeviceCode
// that can be used with CheckForUserCompletion or WaitForUserCompletion.
func InitiateDeviceAuth(client *autorest.Client, oauthConfig OAuthConfig, clientID, resource string) (*DeviceCode, error) {
	req, _ := autorest.Prepare(
		&http.Request{},
		autorest.AsPost(),
		autorest.AsFormURLEncoded(),
		autorest.WithBaseURL(oauthConfig.DeviceCodeEndpoint.String()),
		autorest.WithFormData(url.Values{
			"client_id": []string{clientID},
			"resource":  []string{resource},
		}),
	)

	resp, err := autorest.SendWithSender(client, req)
	if err != nil {
		return nil, fmt.Errorf("%s %s: %s", logPrefix, errCodeSendingFails, err)
	}

	var code DeviceCode
	err = autorest.Respond(
		resp,
		autorest.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&code),
		autorest.ByClosing())
	if err != nil {
		return nil, fmt.Errorf("%s %s: %s", logPrefix, errCodeHandlingFails, err)
	}

	code.ClientID = clientID
	code.Resource = resource
	code.OAuthConfig = oauthConfig

	return &code, nil
}

func TestDoPollForAsynchronous_CanBeCanceled(t *testing.T) {
	cancel := make(chan struct{})
	delay := 5 * time.Second

	r1 := newAsynchronousResponse()

	client := mocks.NewSender()
	client.AppendResponse(r1)
	client.AppendAndRepeatResponse(newOperationResourceResponse("Busy"), -1)

	var wg sync.WaitGroup
	wg.Add(1)
	start := time.Now()
	go func() {
		req := mocks.NewRequest()
		req.Cancel = cancel

		wg.Done()

		r, _ := autorest.SendWithSender(client, req,
			DoPollForAsynchronous(10*time.Second))
		autorest.Respond(r,
			autorest.ByClosing())
	}()
	wg.Wait()
	close(cancel)
	time.Sleep(5 * time.Millisecond)
	if time.Since(start) >= delay {
		t.Fatalf("azure: DoPollForAsynchronous failed to cancel")
	}
}

func TestDoPollForAsynchronous_ReturnsAnUnknownErrorForFailedOperations(t *testing.T) {
	// Return unknown error if error not present in last response
	r1 := newAsynchronousResponse()
	r1.Header.Del(http.CanonicalHeaderKey(headerAsyncOperation))
	r2 := newProvisioningStatusResponse("busy")
	r2.Header.Del(http.CanonicalHeaderKey(headerAsyncOperation))
	r3 := newProvisioningStatusResponse(operationFailed)
	r3.Header.Del(http.CanonicalHeaderKey(headerAsyncOperation))

	client := mocks.NewSender()
	client.AppendResponse(r1)
	client.AppendAndRepeatResponse(r2, 2)
	client.AppendAndRepeatResponse(r3, 1)

	r, err := autorest.SendWithSender(client, mocks.NewRequest(),
		DoPollForAsynchronous(time.Millisecond))

	expected := makeLongRunningOperationErrorString("Unknown", "None")
	if err.Error() != expected {
		t.Fatalf("azure: DoPollForAsynchronous failed to return an appropriate error message for an unknown error. \n expected=%q \n got=%q",
			expected, err.Error())
	}

	autorest.Respond(r,
		autorest.ByClosing())
}

func TestDoPollForAsynchronous_IgnoresUnspecifiedStatusCodes(t *testing.T) {
	client := mocks.NewSender()

	r, _ := autorest.SendWithSender(client, mocks.NewRequest(),
		DoPollForAsynchronous(time.Duration(0)))

	if client.Attempts() != 1 {
		t.Fatalf("azure: DoPollForAsynchronous polled for unspecified status code")
	}

	autorest.Respond(r,
		autorest.ByClosing())
}

func TestDoPollForAsynchronous_PollsForSpecifiedStatusCodes(t *testing.T) {
	client := mocks.NewSender()
	client.AppendResponse(newAsynchronousResponse())

	r, _ := autorest.SendWithSender(client, mocks.NewRequest(),
		DoPollForAsynchronous(time.Millisecond))

	if client.Attempts() != 2 {
		t.Fatalf("azure: DoPollForAsynchronous failed to poll for specified status code")
	}

	autorest.Respond(r,
		autorest.ByClosing())
}

func (spt *ServicePrincipalToken) refreshInternal(resource string) error {
	v := url.Values{}
	v.Set("client_id", spt.clientID)
	v.Set("resource", resource)

	if spt.RefreshToken != "" {
		v.Set("grant_type", OAuthGrantTypeRefreshToken)
		v.Set("refresh_token", spt.RefreshToken)
	} else {
		v.Set("grant_type", OAuthGrantTypeClientCredentials)
		err := spt.secret.SetAuthenticationValues(spt, &v)
		if err != nil {
			return err
		}
	}

	req, _ := autorest.Prepare(&http.Request{},
		autorest.AsPost(),
		autorest.AsFormURLEncoded(),
		autorest.WithBaseURL(spt.oauthConfig.TokenEndpoint.String()),
		autorest.WithFormData(v))

	resp, err := autorest.SendWithSender(spt.sender, req)
	if err != nil {
		return autorest.NewErrorWithError(err,
			"azure.ServicePrincipalToken", "Refresh", resp, "Failure sending request for Service Principal %s",
			spt.clientID)
	}

	var newToken Token
	err = autorest.Respond(resp,
		autorest.WithErrorUnlessOK(),
		autorest.ByUnmarshallingJSON(&newToken),
		autorest.ByClosing())
	if err != nil {
		return autorest.NewErrorWithError(err,
			"azure.ServicePrincipalToken", "Refresh", resp, "Failure handling response to Service Principal %s request",
			spt.clientID)
	}

	spt.Token = newToken

	err = spt.InvokeRefreshCallbacks(newToken)
	if err != nil {
		// its already wrapped inside InvokeRefreshCallbacks
		return err
	}

	return nil
}

// Refresh obtains a fresh token for the Service Principal.
func (spt *ServicePrincipalToken) Refresh() error {
	p := map[string]interface{}{
		"tenantID":    spt.tenantID,
		"requestType": "token",
	}

	v := url.Values{}
	v.Set("client_id", spt.clientID)
	v.Set("grant_type", "client_credentials")
	v.Set("resource", spt.resource)

	err := spt.secret.SetAuthenticationValues(spt, &v)
	if err != nil {
		return err
	}

	req, err := autorest.Prepare(&http.Request{},
		autorest.AsPost(),
		autorest.AsFormURLEncoded(),
		autorest.WithBaseURL(oauthURL),
		autorest.WithPathParameters(p),
		autorest.WithFormData(v))
	if err != nil {
		return err
	}

	resp, err := autorest.SendWithSender(spt.sender, req)
	if err != nil {
		return autorest.NewErrorWithError(err,
			"azure.ServicePrincipalToken", "Refresh", "Failure sending request for Service Principal %s",
			spt.clientID)
	}

	var newToken Token

	err = autorest.Respond(resp,
		autorest.WithErrorUnlessOK(),
		autorest.ByUnmarshallingJSON(&newToken),
		autorest.ByClosing())
	if err != nil {
		return autorest.NewErrorWithError(err,
			"azure.ServicePrincipalToken", "Refresh", "Failure handling response to Service Principal %s request",
			spt.clientID)
	}

	spt.Token = newToken

	return nil
}

func TestDoPollForAsynchronous_ReturnsPollingError(t *testing.T) {
	client := mocks.NewSender()
	client.AppendAndRepeatResponse(newAsynchronousResponse(), 5)
	client.SetError(fmt.Errorf("Faux Error"))
	client.SetEmitErrorAfter(1)

	r, err := autorest.SendWithSender(client, mocks.NewRequest(),
		DoPollForAsynchronous(time.Millisecond))

	if err == nil {
		t.Fatalf("azure: DoPollForAsynchronous failed to return error from polling")
	}

	autorest.Respond(r,
		autorest.ByClosing())
}

// CheckForUserCompletion takes a DeviceCode and checks with the Azure AD OAuth endpoint
// to see if the device flow has: been completed, timed out, or otherwise failed
func CheckForUserCompletion(client *autorest.Client, code *DeviceCode) (*Token, error) {
	req, _ := autorest.Prepare(
		&http.Request{},
		autorest.AsPost(),
		autorest.AsFormURLEncoded(),
		autorest.WithBaseURL(code.OAuthConfig.TokenEndpoint.String()),
		autorest.WithFormData(url.Values{
			"client_id":  []string{code.ClientID},
			"code":       []string{*code.DeviceCode},
			"grant_type": []string{OAuthGrantTypeDeviceCode},
			"resource":   []string{code.Resource},
		}),
	)

	resp, err := autorest.SendWithSender(client, req)
	if err != nil {
		return nil, fmt.Errorf("%s %s: %s", logPrefix, errTokenSendingFails, err)
	}

	var token deviceToken
	err = autorest.Respond(
		resp,
		autorest.WithErrorUnlessStatusCode(http.StatusOK, http.StatusBadRequest),
		autorest.ByUnmarshallingJSON(&token),
		autorest.ByClosing())
	if err != nil {
		return nil, fmt.Errorf("%s %s: %s", logPrefix, errTokenHandlingFails, err)
	}

	if token.Error == nil {
		return &token.Token, nil
	}

	switch *token.Error {
	case "authorization_pending":
		return nil, ErrDeviceAuthorizationPending
	case "slow_down":
		return nil, ErrDeviceSlowDown
	case "access_denied":
		return nil, ErrDeviceAccessDenied
	case "code_expired":
		return nil, ErrDeviceCodeExpired
	default:
		return nil, ErrDeviceGeneric
	}
}

func TestDoPollForAsynchronous_ReturnsErrorForFirstPutRequest(t *testing.T) {
	// Return 400 bad response with error code and message in first put
	r1 := newAsynchronousResponseWithError()
	client := mocks.NewSender()
	client.AppendResponse(r1)

	res, err := autorest.SendWithSender(client, mocks.NewRequest(),
		DoPollForAsynchronous(time.Millisecond))
	if err != nil {
		t.Fatalf("azure: DoPollForAsynchronous failed to return an appropriate error message for a failed Operations. \n expected=%q \n got=%q",
			errorResponse, err.Error())
	}

	err = autorest.Respond(res,
		WithErrorUnlessStatusCode(http.StatusAccepted, http.StatusCreated, http.StatusOK),
		autorest.ByClosing())

	reqError, ok := err.(*RequestError)
	if !ok {
		t.Fatalf("azure: returned error is not azure.RequestError: %T", err)
	}

	expected := &RequestError{
		ServiceError: &ServiceError{
			Code:    "InvalidParameter",
			Message: "tom-service-DISCOVERY-server-base-v1.core.local' is not a valid captured VHD blob name prefix.",
		},
		DetailedError: autorest.DetailedError{
			StatusCode: 400,
		},
	}
	if !reflect.DeepEqual(reqError, expected) {
		t.Fatalf("azure: wrong error. expected=%q\ngot=%q", expected, reqError)
	}

	defer res.Body.Close()
	b, err := ioutil.ReadAll(res.Body)
	if err != nil {
		t.Fatal(err)
	}
	if string(b) != errorResponse {
		t.Fatalf("azure: Response body is wrong. got=%q expected=%q", string(b), errorResponse)
	}

}

func (client *VaultClient) GetSecret(vaultName, secretName string) (*Secret, error) {
	p := map[string]interface{}{
		"secret-name": secretName,
	}
	q := map[string]interface{}{
		"api-version": AzureVaultApiVersion,
	}

	secretURL := strings.Replace(AzureVaultSecretTemplate, "{vault-name}", vaultName, -1)

	req, err := autorest.Prepare(&http.Request{},
		autorest.AsGet(),
		autorest.WithBaseURL(secretURL),
		autorest.WithPathParameters(p),
		autorest.WithQueryParameters(q))

	if err != nil {
		return nil, err
	}

	resp, err := autorest.SendWithSender(client, req)
	if err != nil {
		return nil, err
	}

	if resp.StatusCode != 200 {
		return nil, fmt.Errorf(
			"Failed to fetch secret from %s/%s, HTTP status code=%d (%s)",
			vaultName,
			secretName,
			resp.StatusCode,
			http.StatusText(resp.StatusCode))
	}

	var secret Secret

	err = autorest.Respond(
		resp,
		autorest.ByUnmarshallingJSON(&secret))
	if err != nil {
		return nil, err
	}

	return &secret, nil
}

// Use a Client Inspector to set the request identifier.
func ExampleWithClientID() {
	uuid := "71FDB9F4-5E49-4C12-B266-DE7B4FD999A6"
	req, _ := autorest.Prepare(&http.Request{},
		autorest.AsGet(),
		autorest.WithBaseURL("https://microsoft.com/a/b/c/"))

	c := autorest.Client{Sender: mocks.NewSender()}
	c.RequestInspector = WithReturningClientID(uuid)

	autorest.SendWithSender(c, req)
	fmt.Printf("Inspector added the %s header with the value %s\n",
		HeaderClientID, req.Header.Get(HeaderClientID))
	fmt.Printf("Inspector added the %s header with the value %s\n",
		HeaderReturnClientID, req.Header.Get(HeaderReturnClientID))
	// Output:
	// Inspector added the x-ms-client-request-id header with the value 71FDB9F4-5E49-4C12-B266-DE7B4FD999A6
	// Inspector added the x-ms-return-client-request-id header with the value true
}

// CreateOrUpdate create a resource group.
//
// resourceGroupName is the name of the resource group to be created or
// updated. parameters is parameters supplied to the create or update
// resource group service operation.
func (client ResourceGroupsClient) CreateOrUpdate(resourceGroupName string, parameters ResourceGroup) (result ResourceGroup, ae autorest.Error) {
	req, err := client.NewCreateOrUpdateRequest(resourceGroupName, parameters)
	if err != nil {
		return result, autorest.NewErrorWithError(err, "resources.ResourceGroupsClient", "CreateOrUpdate", "Failure creating request")
	}

	req, err = autorest.Prepare(
		req,
		client.WithAuthorization(),
		client.WithInspection())
	if err != nil {
		return result, autorest.NewErrorWithError(err, "resources.ResourceGroupsClient", "CreateOrUpdate", "Failure preparing request")
	}

	resp, err := autorest.SendWithSender(
		client,
		req,
		autorest.DoErrorUnlessStatusCode(http.StatusCreated, http.StatusOK, http.StatusAccepted))
	if err == nil {
		err = client.IsPollingAllowed(resp)
		if err == nil {
			resp, err = client.PollAsNeeded(resp)
		}
	}

	if err == nil {
		err = autorest.Respond(
			resp,
			client.ByInspecting(),
			autorest.WithErrorUnlessOK(),
			autorest.ByUnmarshallingJSON(&result))
		if err != nil {
			ae = autorest.NewErrorWithError(err, "resources.ResourceGroupsClient", "CreateOrUpdate", "Failure responding to request")
		}
	} else {
		ae = autorest.NewErrorWithError(err, "resources.ResourceGroupsClient", "CreateOrUpdate", "Failure sending request")
	}

	autorest.Respond(resp,
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}

	return
}

// Capture captures the VM by copying VirtualHardDisks of the VM and outputs a
// template that can be used to create similar VMs.
//
// resourceGroupName is the name of the resource group. vmName is the name of
// the virtual machine. parameters is parameters supplied to the Capture
// Virtual Machine operation.
func (client VirtualMachinesClient) Capture(resourceGroupName string, vmName string, parameters VirtualMachineCaptureParameters) (result ComputeLongRunningOperationResult, ae autorest.Error) {
	req, err := client.NewCaptureRequest(resourceGroupName, vmName, parameters)
	if err != nil {
		return result, autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Capture", "Failure creating request")
	}

	req, err = autorest.Prepare(
		req,
		client.WithAuthorization(),
		client.WithInspection())
	if err != nil {
		return result, autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Capture", "Failure preparing request")
	}

	resp, err := autorest.SendWithSender(
		client,
		req,
		autorest.DoErrorUnlessStatusCode(http.StatusOK, http.StatusAccepted))
	if err == nil {
		err = client.IsPollingAllowed(resp)
		if err == nil {
			resp, err = client.PollAsNeeded(resp)
		}
	}

	if err == nil {
		err = autorest.Respond(
			resp,
			client.ByInspecting(),
			autorest.WithErrorUnlessOK(),
			autorest.ByUnmarshallingJSON(&result))
		if err != nil {
			ae = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Capture", "Failure responding to request")
		}
	} else {
		ae = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Capture", "Failure sending request")
	}

	autorest.Respond(resp,
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}

	return
}

// Start the operation to start a virtual machine.
//
// resourceGroupName is the name of the resource group. vmName is the name of
// the virtual machine.
func (client VirtualMachinesClient) Start(resourceGroupName string, vmName string) (result autorest.Response, ae autorest.Error) {
	req, err := client.NewStartRequest(resourceGroupName, vmName)
	if err != nil {
		return result, autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Start", "Failure creating request")
	}

	req, err = autorest.Prepare(
		req,
		client.WithAuthorization(),
		client.WithInspection())
	if err != nil {
		return result, autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Start", "Failure preparing request")
	}

	resp, err := autorest.SendWithSender(
		client,
		req,
		autorest.DoErrorUnlessStatusCode(http.StatusAccepted))
	if err == nil {
		err = client.IsPollingAllowed(resp)
		if err == nil {
			resp, err = client.PollAsNeeded(resp)
		}
	}

	if err == nil {
		err = autorest.Respond(
			resp,
			client.ByInspecting(),
			autorest.WithErrorUnlessOK())
		if err != nil {
			ae = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Start", "Failure responding to request")
		}
	} else {
		ae = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Start", "Failure sending request")
	}

	autorest.Respond(resp,
		autorest.ByClosing())
	result.Response = resp

	return
}

func TestDoPollForAsynchronous_DoesNotPollIfOriginalRequestReturnedAnError(t *testing.T) {
	r1 := newAsynchronousResponse()
	r2 := newOperationResourceResponse("busy")

	client := mocks.NewSender()
	client.AppendResponse(r1)
	client.AppendResponse(r2)
	client.SetError(fmt.Errorf("Faux Error"))

	r, _ := autorest.SendWithSender(client, mocks.NewRequest(),
		DoPollForAsynchronous(time.Millisecond))

	if client.Attempts() != 1 {
		t.Fatalf("azure: DoPollForAsynchronous tried to poll after receiving an error")
	}

	autorest.Respond(r,
		autorest.ByClosing())
}

// Delete the Delete LocalNetworkGateway operation deletes the specifed local
// network Gateway through Network resource provider.
//
// resourceGroupName is the name of the resource group.
// localNetworkGatewayName is the name of the local network gateway.
func (client LocalNetworkGatewaysClient) Delete(resourceGroupName string, localNetworkGatewayName string) (result autorest.Response, ae autorest.Error) {
	req, err := client.NewDeleteRequest(resourceGroupName, localNetworkGatewayName)
	if err != nil {
		return result, autorest.NewErrorWithError(err, "network.LocalNetworkGatewaysClient", "Delete", "Failure creating request")
	}

	req, err = autorest.Prepare(
		req,
		client.WithAuthorization(),
		client.WithInspection())
	if err != nil {
		return result, autorest.NewErrorWithError(err, "network.LocalNetworkGatewaysClient", "Delete", "Failure preparing request")
	}

	resp, err := autorest.SendWithSender(
		client,
		req,
		autorest.DoErrorUnlessStatusCode(http.StatusAccepted, http.StatusNoContent, http.StatusOK))
	if err == nil {
		err = client.IsPollingAllowed(resp)
		if err == nil {
			resp, err = client.PollAsNeeded(resp)
		}
	}

	if err == nil {
		err = autorest.Respond(
			resp,
			client.ByInspecting(),
			autorest.WithErrorUnlessOK())
		if err != nil {
			ae = autorest.NewErrorWithError(err, "network.LocalNetworkGatewaysClient", "Delete", "Failure responding to request")
		}
	} else {
		ae = autorest.NewErrorWithError(err, "network.LocalNetworkGatewaysClient", "Delete", "Failure sending request")
	}

	autorest.Respond(resp,
		autorest.ByClosing())
	result.Response = resp

	return
}