/*
Copyright 2017 The Kubernetes Authors.
Copyright 2020 Authors of Arktos - file modified.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package azure

import (
	"context"
	"fmt"
	"math/rand"
	"net/http"
	"strings"
	"sync"
	"time"

	v1 "k8s.io/api/core/v1"
	"k8s.io/apimachinery/pkg/types"
	cloudprovider "k8s.io/cloud-provider"

	"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2019-07-01/compute"
	"github.com/Azure/azure-sdk-for-go/services/network/mgmt/2019-06-01/network"
	"github.com/Azure/azure-sdk-for-go/services/storage/mgmt/2019-04-01/storage"
	"github.com/Azure/go-autorest/autorest"
	"github.com/Azure/go-autorest/autorest/to"
)

var (
	errPreconditionFailedEtagMismatch = fmt.Errorf("PreconditionFailedEtagMismatch")
)

type fakeAzureLBClient struct {
	mutex     *sync.Mutex
	FakeStore map[string]map[string]network.LoadBalancer
}

func newFakeAzureLBClient() *fakeAzureLBClient {
	fLBC := &fakeAzureLBClient{}
	fLBC.FakeStore = make(map[string]map[string]network.LoadBalancer)
	fLBC.mutex = &sync.Mutex{}
	return fLBC
}

func (fLBC *fakeAzureLBClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, loadBalancerName string, parameters network.LoadBalancer, etag string) (resp *http.Response, err error) {
	fLBC.mutex.Lock()
	defer fLBC.mutex.Unlock()

	if _, ok := fLBC.FakeStore[resourceGroupName]; !ok {
		fLBC.FakeStore[resourceGroupName] = make(map[string]network.LoadBalancer)
	}

	// For dynamic ip allocation, just fill in the PrivateIPAddress
	if parameters.FrontendIPConfigurations != nil {
		for idx, config := range *parameters.FrontendIPConfigurations {
			if config.PrivateIPAllocationMethod == network.Dynamic {
				// Here we randomly assign an ip as private ip
				// It doesn't smart enough to know whether it is in the subnet's range
				(*parameters.FrontendIPConfigurations)[idx].PrivateIPAddress = getRandomIPPtr()
			}
		}
	}
	fLBC.FakeStore[resourceGroupName][loadBalancerName] = parameters

	return nil, nil
}

func (fLBC *fakeAzureLBClient) Delete(ctx context.Context, resourceGroupName string, loadBalancerName string) (resp *http.Response, err error) {
	fLBC.mutex.Lock()
	defer fLBC.mutex.Unlock()

	if rgLBs, ok := fLBC.FakeStore[resourceGroupName]; ok {
		if _, ok := rgLBs[loadBalancerName]; ok {
			delete(rgLBs, loadBalancerName)
			return nil, nil
		}
	}

	return &http.Response{
		StatusCode: http.StatusNotFound,
	}, nil
}

func (fLBC *fakeAzureLBClient) Get(ctx context.Context, resourceGroupName string, loadBalancerName string, expand string) (result network.LoadBalancer, err error) {
	fLBC.mutex.Lock()
	defer fLBC.mutex.Unlock()
	if _, ok := fLBC.FakeStore[resourceGroupName]; ok {
		if entity, ok := fLBC.FakeStore[resourceGroupName][loadBalancerName]; ok {
			return entity, nil
		}
	}
	return result, autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "Not such LB",
	}
}

func (fLBC *fakeAzureLBClient) List(ctx context.Context, resourceGroupName string) (result []network.LoadBalancer, err error) {
	fLBC.mutex.Lock()
	defer fLBC.mutex.Unlock()

	var value []network.LoadBalancer
	if _, ok := fLBC.FakeStore[resourceGroupName]; ok {
		for _, v := range fLBC.FakeStore[resourceGroupName] {
			value = append(value, v)
		}
	}
	return value, nil
}

type fakeAzurePIPClient struct {
	mutex          *sync.Mutex
	FakeStore      map[string]map[string]network.PublicIPAddress
	SubscriptionID string
}

const publicIPAddressIDTemplate = "/subscriptions/%s/resourceGroups/%s/providers/Microsoft.Network/publicIPAddresses/%s"

// returns the full identifier of a publicIPAddress.
func getpublicIPAddressID(subscriptionID string, resourceGroupName, pipName string) string {
	return fmt.Sprintf(
		publicIPAddressIDTemplate,
		subscriptionID,
		resourceGroupName,
		pipName)
}

func newFakeAzurePIPClient(subscriptionID string) *fakeAzurePIPClient {
	fAPC := &fakeAzurePIPClient{}
	fAPC.FakeStore = make(map[string]map[string]network.PublicIPAddress)
	fAPC.SubscriptionID = subscriptionID
	fAPC.mutex = &sync.Mutex{}
	return fAPC
}

func (fAPC *fakeAzurePIPClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, publicIPAddressName string, parameters network.PublicIPAddress) (resp *http.Response, err error) {
	fAPC.mutex.Lock()
	defer fAPC.mutex.Unlock()

	if _, ok := fAPC.FakeStore[resourceGroupName]; !ok {
		fAPC.FakeStore[resourceGroupName] = make(map[string]network.PublicIPAddress)
	}

	// assign id
	pipID := getpublicIPAddressID(fAPC.SubscriptionID, resourceGroupName, publicIPAddressName)
	parameters.ID = &pipID

	// only create in the case user has not provided
	if parameters.PublicIPAddressPropertiesFormat != nil &&
		parameters.PublicIPAddressPropertiesFormat.PublicIPAllocationMethod == network.Static {
		// assign ip
		parameters.IPAddress = getRandomIPPtr()
	}

	fAPC.FakeStore[resourceGroupName][publicIPAddressName] = parameters

	return nil, nil
}

func (fAPC *fakeAzurePIPClient) Delete(ctx context.Context, resourceGroupName string, publicIPAddressName string) (resp *http.Response, err error) {
	fAPC.mutex.Lock()
	defer fAPC.mutex.Unlock()

	if rgPIPs, ok := fAPC.FakeStore[resourceGroupName]; ok {
		if _, ok := rgPIPs[publicIPAddressName]; ok {
			delete(rgPIPs, publicIPAddressName)
			return nil, nil
		}
	}

	return &http.Response{
		StatusCode: http.StatusNotFound,
	}, nil
}

func (fAPC *fakeAzurePIPClient) Get(ctx context.Context, resourceGroupName string, publicIPAddressName string, expand string) (result network.PublicIPAddress, err error) {
	fAPC.mutex.Lock()
	defer fAPC.mutex.Unlock()
	if _, ok := fAPC.FakeStore[resourceGroupName]; ok {
		if entity, ok := fAPC.FakeStore[resourceGroupName][publicIPAddressName]; ok {
			return entity, nil
		}
	}
	return result, autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "No such PIP",
	}
}

func (fAPC *fakeAzurePIPClient) GetVirtualMachineScaleSetPublicIPAddress(ctx context.Context, resourceGroupName string, virtualMachineScaleSetName string, virtualmachineIndex string, networkInterfaceName string, IPConfigurationName string, publicIPAddressName string, expand string) (result network.PublicIPAddress, err error) {
	fAPC.mutex.Lock()
	defer fAPC.mutex.Unlock()
	if _, ok := fAPC.FakeStore[resourceGroupName]; ok {
		if entity, ok := fAPC.FakeStore[resourceGroupName][publicIPAddressName]; ok {
			return entity, nil
		}
	}
	return result, autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "No such PIP",
	}
}

func (fAPC *fakeAzurePIPClient) List(ctx context.Context, resourceGroupName string) (result []network.PublicIPAddress, err error) {
	fAPC.mutex.Lock()
	defer fAPC.mutex.Unlock()

	var value []network.PublicIPAddress
	if _, ok := fAPC.FakeStore[resourceGroupName]; ok {
		for _, v := range fAPC.FakeStore[resourceGroupName] {
			value = append(value, v)
		}
	}

	return value, nil
}

func (fAPC *fakeAzurePIPClient) setFakeStore(store map[string]map[string]network.PublicIPAddress) {
	fAPC.mutex.Lock()
	defer fAPC.mutex.Unlock()

	fAPC.FakeStore = store
}

type fakeAzureInterfacesClient struct {
	mutex     *sync.Mutex
	FakeStore map[string]map[string]network.Interface
}

func newFakeAzureInterfacesClient() *fakeAzureInterfacesClient {
	fIC := &fakeAzureInterfacesClient{}
	fIC.FakeStore = make(map[string]map[string]network.Interface)
	fIC.mutex = &sync.Mutex{}

	return fIC
}

func (fIC *fakeAzureInterfacesClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, networkInterfaceName string, parameters network.Interface) (resp *http.Response, err error) {
	fIC.mutex.Lock()
	defer fIC.mutex.Unlock()

	if _, ok := fIC.FakeStore[resourceGroupName]; !ok {
		fIC.FakeStore[resourceGroupName] = make(map[string]network.Interface)
	}
	fIC.FakeStore[resourceGroupName][networkInterfaceName] = parameters

	return nil, nil
}

func (fIC *fakeAzureInterfacesClient) Get(ctx context.Context, resourceGroupName string, networkInterfaceName string, expand string) (result network.Interface, err error) {
	fIC.mutex.Lock()
	defer fIC.mutex.Unlock()
	if _, ok := fIC.FakeStore[resourceGroupName]; ok {
		if entity, ok := fIC.FakeStore[resourceGroupName][networkInterfaceName]; ok {
			return entity, nil
		}
	}
	return result, autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "Not such Interface",
	}
}

func (fIC *fakeAzureInterfacesClient) GetVirtualMachineScaleSetNetworkInterface(ctx context.Context, resourceGroupName string, virtualMachineScaleSetName string, virtualmachineIndex string, networkInterfaceName string, expand string) (result network.Interface, err error) {
	fIC.mutex.Lock()
	defer fIC.mutex.Unlock()
	if _, ok := fIC.FakeStore[resourceGroupName]; ok {
		if entity, ok := fIC.FakeStore[resourceGroupName][networkInterfaceName]; ok {
			return entity, nil
		}
	}
	return result, autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "Not such Interface",
	}
}

func (fIC *fakeAzureInterfacesClient) setFakeStore(store map[string]map[string]network.Interface) {
	fIC.mutex.Lock()
	defer fIC.mutex.Unlock()

	fIC.FakeStore = store
}

type fakeAzureVirtualMachinesClient struct {
	mutex     *sync.Mutex
	FakeStore map[string]map[string]compute.VirtualMachine
}

func newFakeAzureVirtualMachinesClient() *fakeAzureVirtualMachinesClient {
	fVMC := &fakeAzureVirtualMachinesClient{}
	fVMC.FakeStore = make(map[string]map[string]compute.VirtualMachine)
	fVMC.mutex = &sync.Mutex{}
	return fVMC
}

func (fVMC *fakeAzureVirtualMachinesClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, VMName string, parameters compute.VirtualMachine, source string) (resp *http.Response, err error) {
	fVMC.mutex.Lock()
	defer fVMC.mutex.Unlock()

	if _, ok := fVMC.FakeStore[resourceGroupName]; !ok {
		fVMC.FakeStore[resourceGroupName] = make(map[string]compute.VirtualMachine)
	}
	fVMC.FakeStore[resourceGroupName][VMName] = parameters

	return nil, nil
}

func (fVMC *fakeAzureVirtualMachinesClient) Update(ctx context.Context, resourceGroupName string, VMName string, parameters compute.VirtualMachineUpdate, source string) (resp *http.Response, err error) {
	fVMC.mutex.Lock()
	defer fVMC.mutex.Unlock()

	if _, ok := fVMC.FakeStore[resourceGroupName]; !ok {
		fVMC.FakeStore[resourceGroupName] = make(map[string]compute.VirtualMachine)
	}

	return nil, nil
}

func (fVMC *fakeAzureVirtualMachinesClient) Get(ctx context.Context, resourceGroupName string, VMName string, expand compute.InstanceViewTypes) (result compute.VirtualMachine, err error) {
	fVMC.mutex.Lock()
	defer fVMC.mutex.Unlock()
	if _, ok := fVMC.FakeStore[resourceGroupName]; ok {
		if entity, ok := fVMC.FakeStore[resourceGroupName][VMName]; ok {
			return entity, nil
		}
	}
	return result, autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "Not such VM",
	}
}

func (fVMC *fakeAzureVirtualMachinesClient) List(ctx context.Context, resourceGroupName string) (result []compute.VirtualMachine, err error) {
	fVMC.mutex.Lock()
	defer fVMC.mutex.Unlock()

	result = []compute.VirtualMachine{}
	if _, ok := fVMC.FakeStore[resourceGroupName]; ok {
		for _, v := range fVMC.FakeStore[resourceGroupName] {
			result = append(result, v)
		}
	}

	return result, nil
}

func (fVMC *fakeAzureVirtualMachinesClient) setFakeStore(store map[string]map[string]compute.VirtualMachine) {
	fVMC.mutex.Lock()
	defer fVMC.mutex.Unlock()

	fVMC.FakeStore = store
}

type fakeAzureSubnetsClient struct {
	mutex     *sync.Mutex
	FakeStore map[string]map[string]network.Subnet
}

func newFakeAzureSubnetsClient() *fakeAzureSubnetsClient {
	fASC := &fakeAzureSubnetsClient{}
	fASC.FakeStore = make(map[string]map[string]network.Subnet)
	fASC.mutex = &sync.Mutex{}
	return fASC
}

func (fASC *fakeAzureSubnetsClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, virtualNetworkName string, subnetName string, subnetParameters network.Subnet) (resp *http.Response, err error) {
	fASC.mutex.Lock()
	defer fASC.mutex.Unlock()

	rgVnet := strings.Join([]string{resourceGroupName, virtualNetworkName}, "AND")
	if _, ok := fASC.FakeStore[rgVnet]; !ok {
		fASC.FakeStore[rgVnet] = make(map[string]network.Subnet)
	}
	fASC.FakeStore[rgVnet][subnetName] = subnetParameters

	return nil, nil
}

func (fASC *fakeAzureSubnetsClient) Delete(ctx context.Context, resourceGroupName string, virtualNetworkName string, subnetName string) (resp *http.Response, err error) {
	fASC.mutex.Lock()
	defer fASC.mutex.Unlock()

	rgVnet := strings.Join([]string{resourceGroupName, virtualNetworkName}, "AND")
	if rgSubnets, ok := fASC.FakeStore[rgVnet]; ok {
		if _, ok := rgSubnets[subnetName]; ok {
			delete(rgSubnets, subnetName)
			return nil, nil
		}
	}

	return &http.Response{
		StatusCode: http.StatusNotFound,
	}, nil
}

func (fASC *fakeAzureSubnetsClient) Get(ctx context.Context, resourceGroupName string, virtualNetworkName string, subnetName string, expand string) (result network.Subnet, err error) {
	fASC.mutex.Lock()
	defer fASC.mutex.Unlock()
	rgVnet := strings.Join([]string{resourceGroupName, virtualNetworkName}, "AND")
	if _, ok := fASC.FakeStore[rgVnet]; ok {
		if entity, ok := fASC.FakeStore[rgVnet][subnetName]; ok {
			return entity, nil
		}
	}
	return result, autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "Not such Subnet",
	}
}

func (fASC *fakeAzureSubnetsClient) List(ctx context.Context, resourceGroupName string, virtualNetworkName string) (result []network.Subnet, err error) {
	fASC.mutex.Lock()
	defer fASC.mutex.Unlock()

	rgVnet := strings.Join([]string{resourceGroupName, virtualNetworkName}, "AND")
	var value []network.Subnet
	if _, ok := fASC.FakeStore[rgVnet]; ok {
		for _, v := range fASC.FakeStore[rgVnet] {
			value = append(value, v)
		}
	}

	return value, nil
}

type fakeAzureNSGClient struct {
	mutex     *sync.Mutex
	FakeStore map[string]map[string]network.SecurityGroup
}

func newFakeAzureNSGClient() *fakeAzureNSGClient {
	fNSG := &fakeAzureNSGClient{}
	fNSG.FakeStore = make(map[string]map[string]network.SecurityGroup)
	fNSG.mutex = &sync.Mutex{}
	return fNSG
}

func (fNSG *fakeAzureNSGClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, networkSecurityGroupName string, parameters network.SecurityGroup, etag string) (resp *http.Response, err error) {
	fNSG.mutex.Lock()
	defer fNSG.mutex.Unlock()

	if _, ok := fNSG.FakeStore[resourceGroupName]; !ok {
		fNSG.FakeStore[resourceGroupName] = make(map[string]network.SecurityGroup)
	}

	if nsg, ok := fNSG.FakeStore[resourceGroupName][networkSecurityGroupName]; ok {
		if etag != "" && to.String(nsg.Etag) != "" && etag != to.String(nsg.Etag) {
			return &http.Response{
				StatusCode: http.StatusPreconditionFailed,
			}, errPreconditionFailedEtagMismatch
		}
	}
	fNSG.FakeStore[resourceGroupName][networkSecurityGroupName] = parameters

	return nil, nil
}

func (fNSG *fakeAzureNSGClient) Delete(ctx context.Context, resourceGroupName string, networkSecurityGroupName string) (resp *http.Response, err error) {
	fNSG.mutex.Lock()
	defer fNSG.mutex.Unlock()

	if rgSGs, ok := fNSG.FakeStore[resourceGroupName]; ok {
		if _, ok := rgSGs[networkSecurityGroupName]; ok {
			delete(rgSGs, networkSecurityGroupName)
			return nil, nil
		}
	}

	return &http.Response{
		StatusCode: http.StatusNotFound,
	}, nil
}

func (fNSG *fakeAzureNSGClient) Get(ctx context.Context, resourceGroupName string, networkSecurityGroupName string, expand string) (result network.SecurityGroup, err error) {
	fNSG.mutex.Lock()
	defer fNSG.mutex.Unlock()
	if _, ok := fNSG.FakeStore[resourceGroupName]; ok {
		if entity, ok := fNSG.FakeStore[resourceGroupName][networkSecurityGroupName]; ok {
			return entity, nil
		}
	}
	return result, autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "Not such NSG",
	}
}

func (fNSG *fakeAzureNSGClient) List(ctx context.Context, resourceGroupName string) (result []network.SecurityGroup, err error) {
	fNSG.mutex.Lock()
	defer fNSG.mutex.Unlock()

	var value []network.SecurityGroup
	if _, ok := fNSG.FakeStore[resourceGroupName]; ok {
		for _, v := range fNSG.FakeStore[resourceGroupName] {
			value = append(value, v)
		}
	}

	return value, nil
}

func getRandomIPPtr() *string {
	rand.Seed(time.Now().UnixNano())
	return to.StringPtr(fmt.Sprintf("%d.%d.%d.%d", rand.Intn(256), rand.Intn(256), rand.Intn(256), rand.Intn(256)))
}

type fakeVirtualMachineScaleSetVMsClient struct {
	mutex     *sync.Mutex
	FakeStore map[string]map[string]compute.VirtualMachineScaleSetVM
}

func newFakeVirtualMachineScaleSetVMsClient() *fakeVirtualMachineScaleSetVMsClient {
	fVMC := &fakeVirtualMachineScaleSetVMsClient{}
	fVMC.FakeStore = make(map[string]map[string]compute.VirtualMachineScaleSetVM)
	fVMC.mutex = &sync.Mutex{}

	return fVMC
}

func (fVMC *fakeVirtualMachineScaleSetVMsClient) setFakeStore(store map[string]map[string]compute.VirtualMachineScaleSetVM) {
	fVMC.mutex.Lock()
	defer fVMC.mutex.Unlock()

	fVMC.FakeStore = store
}

func (fVMC *fakeVirtualMachineScaleSetVMsClient) List(ctx context.Context, resourceGroupName string, virtualMachineScaleSetName string, filter string, selectParameter string, expand string) (result []compute.VirtualMachineScaleSetVM, err error) {
	fVMC.mutex.Lock()
	defer fVMC.mutex.Unlock()

	result = []compute.VirtualMachineScaleSetVM{}
	if _, ok := fVMC.FakeStore[resourceGroupName]; ok {
		for _, v := range fVMC.FakeStore[resourceGroupName] {
			result = append(result, v)
		}
	}

	return result, nil
}

func (fVMC *fakeVirtualMachineScaleSetVMsClient) Get(ctx context.Context, resourceGroupName string, VMScaleSetName string, instanceID string, expand compute.InstanceViewTypes) (result compute.VirtualMachineScaleSetVM, err error) {
	fVMC.mutex.Lock()
	defer fVMC.mutex.Unlock()

	vmKey := fmt.Sprintf("%s_%s", VMScaleSetName, instanceID)
	if scaleSetMap, ok := fVMC.FakeStore[resourceGroupName]; ok {
		if entity, ok := scaleSetMap[vmKey]; ok {
			return entity, nil
		}
	}

	return result, autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "No such VirtualMachineScaleSetVM",
	}
}

func (fVMC *fakeVirtualMachineScaleSetVMsClient) Update(ctx context.Context, resourceGroupName string, VMScaleSetName string, instanceID string, parameters compute.VirtualMachineScaleSetVM, source string) (resp *http.Response, err error) {
	fVMC.mutex.Lock()
	defer fVMC.mutex.Unlock()

	vmKey := fmt.Sprintf("%s_%s", VMScaleSetName, instanceID)
	if scaleSetMap, ok := fVMC.FakeStore[resourceGroupName]; ok {
		if _, ok := scaleSetMap[vmKey]; ok {
			scaleSetMap[vmKey] = parameters
		}
	}

	return nil, nil
}

type fakeVirtualMachineScaleSetsClient struct {
	mutex     *sync.Mutex
	FakeStore map[string]map[string]compute.VirtualMachineScaleSet
}

func newFakeVirtualMachineScaleSetsClient() *fakeVirtualMachineScaleSetsClient {
	fVMSSC := &fakeVirtualMachineScaleSetsClient{}
	fVMSSC.FakeStore = make(map[string]map[string]compute.VirtualMachineScaleSet)
	fVMSSC.mutex = &sync.Mutex{}

	return fVMSSC
}

func (fVMSSC *fakeVirtualMachineScaleSetsClient) setFakeStore(store map[string]map[string]compute.VirtualMachineScaleSet) {
	fVMSSC.mutex.Lock()
	defer fVMSSC.mutex.Unlock()

	fVMSSC.FakeStore = store
}

func (fVMSSC *fakeVirtualMachineScaleSetsClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, VMScaleSetName string, parameters compute.VirtualMachineScaleSet) (resp *http.Response, err error) {
	fVMSSC.mutex.Lock()
	defer fVMSSC.mutex.Unlock()

	if _, ok := fVMSSC.FakeStore[resourceGroupName]; !ok {
		fVMSSC.FakeStore[resourceGroupName] = make(map[string]compute.VirtualMachineScaleSet)
	}
	fVMSSC.FakeStore[resourceGroupName][VMScaleSetName] = parameters

	return nil, nil
}

func (fVMSSC *fakeVirtualMachineScaleSetsClient) Get(ctx context.Context, resourceGroupName string, VMScaleSetName string) (result compute.VirtualMachineScaleSet, err error) {
	fVMSSC.mutex.Lock()
	defer fVMSSC.mutex.Unlock()

	if scaleSetMap, ok := fVMSSC.FakeStore[resourceGroupName]; ok {
		if entity, ok := scaleSetMap[VMScaleSetName]; ok {
			return entity, nil
		}
	}

	return result, autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "No such ScaleSet",
	}
}

func (fVMSSC *fakeVirtualMachineScaleSetsClient) List(ctx context.Context, resourceGroupName string) (result []compute.VirtualMachineScaleSet, err error) {
	fVMSSC.mutex.Lock()
	defer fVMSSC.mutex.Unlock()

	result = []compute.VirtualMachineScaleSet{}
	if _, ok := fVMSSC.FakeStore[resourceGroupName]; ok {
		for _, v := range fVMSSC.FakeStore[resourceGroupName] {
			result = append(result, v)
		}
	}

	return result, nil
}

func (fVMSSC *fakeVirtualMachineScaleSetsClient) UpdateInstances(ctx context.Context, resourceGroupName string, VMScaleSetName string, VMInstanceIDs compute.VirtualMachineScaleSetVMInstanceRequiredIDs) (resp *http.Response, err error) {
	return nil, nil
}

type fakeRoutesClient struct {
	mutex     *sync.Mutex
	FakeStore map[string]map[string]network.Route
}

func newFakeRoutesClient() *fakeRoutesClient {
	fRC := &fakeRoutesClient{}
	fRC.FakeStore = make(map[string]map[string]network.Route)
	fRC.mutex = &sync.Mutex{}
	return fRC
}

func (fRC *fakeRoutesClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, routeTableName string, routeName string, routeParameters network.Route, etag string) (resp *http.Response, err error) {
	fRC.mutex.Lock()
	defer fRC.mutex.Unlock()

	if _, ok := fRC.FakeStore[routeTableName]; !ok {
		fRC.FakeStore[routeTableName] = make(map[string]network.Route)
	}
	fRC.FakeStore[routeTableName][routeName] = routeParameters

	return nil, nil
}

func (fRC *fakeRoutesClient) Delete(ctx context.Context, resourceGroupName string, routeTableName string, routeName string) (resp *http.Response, err error) {
	fRC.mutex.Lock()
	defer fRC.mutex.Unlock()

	if routes, ok := fRC.FakeStore[routeTableName]; ok {
		if _, ok := routes[routeName]; ok {
			delete(routes, routeName)
			return nil, nil
		}
	}

	return &http.Response{
		StatusCode: http.StatusNotFound,
	}, nil
}

type fakeRouteTablesClient struct {
	mutex     *sync.Mutex
	FakeStore map[string]map[string]network.RouteTable
	Calls     []string
}

func newFakeRouteTablesClient() *fakeRouteTablesClient {
	fRTC := &fakeRouteTablesClient{}
	fRTC.FakeStore = make(map[string]map[string]network.RouteTable)
	fRTC.mutex = &sync.Mutex{}
	return fRTC
}

func (fRTC *fakeRouteTablesClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, routeTableName string, parameters network.RouteTable, etag string) (resp *http.Response, err error) {
	fRTC.mutex.Lock()
	defer fRTC.mutex.Unlock()

	fRTC.Calls = append(fRTC.Calls, "CreateOrUpdate")

	if _, ok := fRTC.FakeStore[resourceGroupName]; !ok {
		fRTC.FakeStore[resourceGroupName] = make(map[string]network.RouteTable)
	}
	fRTC.FakeStore[resourceGroupName][routeTableName] = parameters

	return nil, nil
}

func (fRTC *fakeRouteTablesClient) Get(ctx context.Context, resourceGroupName string, routeTableName string, expand string) (result network.RouteTable, err error) {
	fRTC.mutex.Lock()
	defer fRTC.mutex.Unlock()

	fRTC.Calls = append(fRTC.Calls, "Get")

	if _, ok := fRTC.FakeStore[resourceGroupName]; ok {
		if entity, ok := fRTC.FakeStore[resourceGroupName][routeTableName]; ok {
			return entity, nil
		}
	}
	return result, autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "Not such RouteTable",
	}
}

type fakeFileClient struct {
}

func (fFC *fakeFileClient) createFileShare(accountName, accountKey, name string, sizeGiB int) error {
	return nil
}

func (fFC *fakeFileClient) deleteFileShare(accountName, accountKey, name string) error {
	return nil
}

func (fFC *fakeFileClient) resizeFileShare(accountName, accountKey, name string, sizeGiB int) error {
	return nil
}

type fakeStorageAccountClient struct {
	mutex     *sync.Mutex
	FakeStore map[string]map[string]storage.Account
	Keys      storage.AccountListKeysResult
	Accounts  storage.AccountListResult
	Err       error
}

func newFakeStorageAccountClient() *fakeStorageAccountClient {
	fSAC := &fakeStorageAccountClient{}
	fSAC.FakeStore = make(map[string]map[string]storage.Account)
	fSAC.mutex = &sync.Mutex{}
	return fSAC
}

func (fSAC *fakeStorageAccountClient) Create(ctx context.Context, resourceGroupName string, accountName string, parameters storage.AccountCreateParameters) (resp *http.Response, err error) {
	fSAC.mutex.Lock()
	defer fSAC.mutex.Unlock()

	if _, ok := fSAC.FakeStore[resourceGroupName]; !ok {
		fSAC.FakeStore[resourceGroupName] = make(map[string]storage.Account)
	}
	fSAC.FakeStore[resourceGroupName][accountName] = storage.Account{
		Name:              &accountName,
		Sku:               parameters.Sku,
		Kind:              parameters.Kind,
		Location:          parameters.Location,
		Identity:          parameters.Identity,
		Tags:              parameters.Tags,
		AccountProperties: &storage.AccountProperties{},
	}

	return nil, nil
}

func (fSAC *fakeStorageAccountClient) Delete(ctx context.Context, resourceGroupName string, accountName string) (result autorest.Response, err error) {
	fSAC.mutex.Lock()
	defer fSAC.mutex.Unlock()

	if rgAccounts, ok := fSAC.FakeStore[resourceGroupName]; ok {
		if _, ok := rgAccounts[accountName]; ok {
			delete(rgAccounts, accountName)
			result.Response = &http.Response{
				StatusCode: http.StatusAccepted,
			}
			return result, nil
		}
	}

	result.Response = &http.Response{
		StatusCode: http.StatusNotFound,
	}
	err = autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "Not such StorageAccount",
	}
	return result, err
}

func (fSAC *fakeStorageAccountClient) ListKeys(ctx context.Context, resourceGroupName string, accountName string) (result storage.AccountListKeysResult, err error) {
	return fSAC.Keys, fSAC.Err
}

func (fSAC *fakeStorageAccountClient) ListByResourceGroup(ctx context.Context, resourceGroupName string) (result storage.AccountListResult, err error) {
	return fSAC.Accounts, fSAC.Err
}

func (fSAC *fakeStorageAccountClient) GetProperties(ctx context.Context, resourceGroupName string, accountName string) (result storage.Account, err error) {
	fSAC.mutex.Lock()
	defer fSAC.mutex.Unlock()

	if _, ok := fSAC.FakeStore[resourceGroupName]; ok {
		if entity, ok := fSAC.FakeStore[resourceGroupName][accountName]; ok {
			return entity, nil
		}
	}

	return result, autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "Not such StorageAccount",
	}
}

type fakeDisksClient struct {
	mutex     *sync.Mutex
	FakeStore map[string]map[string]compute.Disk
}

func newFakeDisksClient() *fakeDisksClient {
	fDC := &fakeDisksClient{}
	fDC.FakeStore = make(map[string]map[string]compute.Disk)
	fDC.mutex = &sync.Mutex{}
	return fDC
}

func (fDC *fakeDisksClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, diskName string, diskParameter compute.Disk) (resp *http.Response, err error) {
	fDC.mutex.Lock()
	defer fDC.mutex.Unlock()

	if _, ok := fDC.FakeStore[resourceGroupName]; !ok {
		fDC.FakeStore[resourceGroupName] = make(map[string]compute.Disk)
	}
	fDC.FakeStore[resourceGroupName][diskName] = diskParameter

	return nil, nil
}

func (fDC *fakeDisksClient) Delete(ctx context.Context, resourceGroupName string, diskName string) (resp *http.Response, err error) {
	fDC.mutex.Lock()
	defer fDC.mutex.Unlock()

	if rgDisks, ok := fDC.FakeStore[resourceGroupName]; ok {
		if _, ok := rgDisks[diskName]; ok {
			delete(rgDisks, diskName)
			return nil, nil
		}
	}

	return &http.Response{
		StatusCode: http.StatusAccepted,
	}, nil
}

func (fDC *fakeDisksClient) Get(ctx context.Context, resourceGroupName string, diskName string) (result compute.Disk, err error) {
	fDC.mutex.Lock()
	defer fDC.mutex.Unlock()

	if _, ok := fDC.FakeStore[resourceGroupName]; ok {
		if entity, ok := fDC.FakeStore[resourceGroupName][diskName]; ok {
			return entity, nil
		}
	}

	return result, autorest.DetailedError{
		StatusCode: http.StatusNotFound,
		Message:    "Not such Disk",
	}
}

type fakeVMSet struct {
	NodeToIP map[string]string
	Err      error
}

func (f *fakeVMSet) GetInstanceIDByNodeName(name string) (string, error) {
	return "", fmt.Errorf("unimplemented")
}

func (f *fakeVMSet) GetInstanceTypeByNodeName(name string) (string, error) {
	return "", fmt.Errorf("unimplemented")
}

func (f *fakeVMSet) GetIPByNodeName(name string) (string, string, error) {
	ip, found := f.NodeToIP[name]
	if !found {
		return "", "", fmt.Errorf("not found")
	}

	return ip, "", nil
}

func (f *fakeVMSet) GetPrimaryInterface(nodeName string) (network.Interface, error) {
	return network.Interface{}, fmt.Errorf("unimplemented")
}

func (f *fakeVMSet) GetNodeNameByProviderID(providerID string) (types.NodeName, error) {
	return types.NodeName(""), fmt.Errorf("unimplemented")
}

func (f *fakeVMSet) GetZoneByNodeName(name string) (cloudprovider.Zone, error) {
	return cloudprovider.Zone{}, fmt.Errorf("unimplemented")
}

func (f *fakeVMSet) GetPrimaryVMSetName() string {
	return ""
}

func (f *fakeVMSet) GetVMSetNames(service *v1.Service, nodes []*v1.Node) (availabilitySetNames *[]string, err error) {
	return nil, fmt.Errorf("unimplemented")
}

func (f *fakeVMSet) EnsureHostsInPool(service *v1.Service, nodes []*v1.Node, backendPoolID string, vmSetName string, isInternal bool) error {
	return fmt.Errorf("unimplemented")
}

func (f *fakeVMSet) EnsureHostInPool(service *v1.Service, nodeName types.NodeName, backendPoolID string, vmSetName string, isInternal bool) error {
	return fmt.Errorf("unimplemented")
}

func (f *fakeVMSet) EnsureBackendPoolDeleted(service *v1.Service, backendPoolID, vmSetName string, backendAddressPools *[]network.BackendAddressPool) error {
	return fmt.Errorf("unimplemented")
}

func (f *fakeVMSet) AttachDisk(isManagedDisk bool, diskName, diskURI string, nodeName types.NodeName, lun int32, cachingMode compute.CachingTypes) error {
	return fmt.Errorf("unimplemented")
}

func (f *fakeVMSet) DetachDisk(diskName, diskURI string, nodeName types.NodeName) (*http.Response, error) {
	return nil, fmt.Errorf("unimplemented")
}

func (f *fakeVMSet) GetDataDisks(nodeName types.NodeName) ([]compute.DataDisk, error) {
	return nil, fmt.Errorf("unimplemented")
}

func (f *fakeVMSet) GetPowerStatusByNodeName(name string) (string, error) {
	return "", fmt.Errorf("unimplemented")
}
