package apimanagement

// Copyright (c) Microsoft and contributors.  All rights reserved.
//
// 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.
//
// Code generated by Microsoft (R) AutoRest Code Generator.
// Changes may cause incorrect behavior and will be lost if the code is regenerated.

import (
	"context"
	"github.com/Azure/go-autorest/autorest"
	"github.com/Azure/go-autorest/autorest/azure"
	"github.com/Azure/go-autorest/autorest/validation"
	"net/http"
)

// APIOperationsClient is the apiManagement Client
type APIOperationsClient struct {
	BaseClient
}

// NewAPIOperationsClient creates an instance of the APIOperationsClient client.
func NewAPIOperationsClient(subscriptionID string) APIOperationsClient {
	return NewAPIOperationsClientWithBaseURI(DefaultBaseURI, subscriptionID)
}

// NewAPIOperationsClientWithBaseURI creates an instance of the APIOperationsClient client.
func NewAPIOperationsClientWithBaseURI(baseURI string, subscriptionID string) APIOperationsClient {
	return APIOperationsClient{NewWithBaseURI(baseURI, subscriptionID)}
}

// CreateOrUpdate creates a new API operation or updates an existing one.
//
// resourceGroupName is the name of the resource group. serviceName is the name of the API Management service. apiid is
// API identifier. Must be unique in the current API Management service instance. operationID is operation identifier
// within an API. Must be unique in the current API Management service instance. parameters is create parameters.
func (client APIOperationsClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, serviceName string, apiid string, operationID string, parameters OperationContract) (result autorest.Response, err error) {
	if err := validation.Validate([]validation.Validation{
		{TargetValue: serviceName,
			Constraints: []validation.Constraint{{Target: "serviceName", Name: validation.MaxLength, Rule: 50, Chain: nil},
				{Target: "serviceName", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "serviceName", Name: validation.Pattern, Rule: `^[a-zA-Z](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$`, Chain: nil}}},
		{TargetValue: apiid,
			Constraints: []validation.Constraint{{Target: "apiid", Name: validation.MaxLength, Rule: 256, Chain: nil},
				{Target: "apiid", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "apiid", Name: validation.Pattern, Rule: `^[^*#&+:<>?]+$`, Chain: nil}}},
		{TargetValue: operationID,
			Constraints: []validation.Constraint{{Target: "operationID", Name: validation.MaxLength, Rule: 256, Chain: nil},
				{Target: "operationID", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "operationID", Name: validation.Pattern, Rule: `^[^*#&+:<>?]+$`, Chain: nil}}},
		{TargetValue: parameters,
			Constraints: []validation.Constraint{{Target: "parameters.Name", Name: validation.Null, Rule: true,
				Chain: []validation.Constraint{{Target: "parameters.Name", Name: validation.MaxLength, Rule: 300, Chain: nil},
					{Target: "parameters.Name", Name: validation.MinLength, Rule: 1, Chain: nil},
				}},
				{Target: "parameters.Method", Name: validation.Null, Rule: true, Chain: nil},
				{Target: "parameters.URLTemplate", Name: validation.Null, Rule: true,
					Chain: []validation.Constraint{{Target: "parameters.URLTemplate", Name: validation.MaxLength, Rule: 1000, Chain: nil},
						{Target: "parameters.URLTemplate", Name: validation.MinLength, Rule: 1, Chain: nil},
					}}}}}); err != nil {
		return result, validation.NewErrorWithValidationError(err, "apimanagement.APIOperationsClient", "CreateOrUpdate")
	}

	req, err := client.CreateOrUpdatePreparer(ctx, resourceGroupName, serviceName, apiid, operationID, parameters)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "CreateOrUpdate", nil, "Failure preparing request")
		return
	}

	resp, err := client.CreateOrUpdateSender(req)
	if err != nil {
		result.Response = resp
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "CreateOrUpdate", resp, "Failure sending request")
		return
	}

	result, err = client.CreateOrUpdateResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "CreateOrUpdate", resp, "Failure responding to request")
	}

	return
}

// CreateOrUpdatePreparer prepares the CreateOrUpdate request.
func (client APIOperationsClient) CreateOrUpdatePreparer(ctx context.Context, resourceGroupName string, serviceName string, apiid string, operationID string, parameters OperationContract) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"apiId":             autorest.Encode("path", apiid),
		"operationId":       autorest.Encode("path", operationID),
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"serviceName":       autorest.Encode("path", serviceName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2016-10-10"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsJSON(),
		autorest.AsPut(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/apis/{apiId}/operations/{operationId}", pathParameters),
		autorest.WithJSON(parameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// CreateOrUpdateSender sends the CreateOrUpdate request. The method will close the
// http.Response Body if it receives an error.
func (client APIOperationsClient) CreateOrUpdateSender(req *http.Request) (*http.Response, error) {
	return autorest.SendWithSender(client, req,
		azure.DoRetryWithRegistration(client.Client))
}

// CreateOrUpdateResponder handles the response to the CreateOrUpdate request. The method always
// closes the http.Response Body.
func (client APIOperationsClient) CreateOrUpdateResponder(resp *http.Response) (result autorest.Response, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusCreated, http.StatusNoContent),
		autorest.ByClosing())
	result.Response = resp
	return
}

// Delete deletes the specified operation.
//
// resourceGroupName is the name of the resource group. serviceName is the name of the API Management service. apiid is
// API identifier. Must be unique in the current API Management service instance. operationID is operation identifier
// within an API. Must be unique in the current API Management service instance. ifMatch is eTag of the API Operation
// Entity. ETag should match the current entity state from the header response of the GET request or it should be * for
// unconditional update.
func (client APIOperationsClient) Delete(ctx context.Context, resourceGroupName string, serviceName string, apiid string, operationID string, ifMatch string) (result autorest.Response, err error) {
	if err := validation.Validate([]validation.Validation{
		{TargetValue: serviceName,
			Constraints: []validation.Constraint{{Target: "serviceName", Name: validation.MaxLength, Rule: 50, Chain: nil},
				{Target: "serviceName", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "serviceName", Name: validation.Pattern, Rule: `^[a-zA-Z](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$`, Chain: nil}}},
		{TargetValue: apiid,
			Constraints: []validation.Constraint{{Target: "apiid", Name: validation.MaxLength, Rule: 256, Chain: nil},
				{Target: "apiid", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "apiid", Name: validation.Pattern, Rule: `^[^*#&+:<>?]+$`, Chain: nil}}},
		{TargetValue: operationID,
			Constraints: []validation.Constraint{{Target: "operationID", Name: validation.MaxLength, Rule: 256, Chain: nil},
				{Target: "operationID", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "operationID", Name: validation.Pattern, Rule: `^[^*#&+:<>?]+$`, Chain: nil}}}}); err != nil {
		return result, validation.NewErrorWithValidationError(err, "apimanagement.APIOperationsClient", "Delete")
	}

	req, err := client.DeletePreparer(ctx, resourceGroupName, serviceName, apiid, operationID, ifMatch)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "Delete", nil, "Failure preparing request")
		return
	}

	resp, err := client.DeleteSender(req)
	if err != nil {
		result.Response = resp
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "Delete", resp, "Failure sending request")
		return
	}

	result, err = client.DeleteResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "Delete", resp, "Failure responding to request")
	}

	return
}

// DeletePreparer prepares the Delete request.
func (client APIOperationsClient) DeletePreparer(ctx context.Context, resourceGroupName string, serviceName string, apiid string, operationID string, ifMatch string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"apiId":             autorest.Encode("path", apiid),
		"operationId":       autorest.Encode("path", operationID),
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"serviceName":       autorest.Encode("path", serviceName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2016-10-10"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsDelete(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/apis/{apiId}/operations/{operationId}", pathParameters),
		autorest.WithQueryParameters(queryParameters),
		autorest.WithHeader("If-Match", autorest.String(ifMatch)))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// DeleteSender sends the Delete request. The method will close the
// http.Response Body if it receives an error.
func (client APIOperationsClient) DeleteSender(req *http.Request) (*http.Response, error) {
	return autorest.SendWithSender(client, req,
		azure.DoRetryWithRegistration(client.Client))
}

// DeleteResponder handles the response to the Delete request. The method always
// closes the http.Response Body.
func (client APIOperationsClient) DeleteResponder(resp *http.Response) (result autorest.Response, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusNoContent),
		autorest.ByClosing())
	result.Response = resp
	return
}

// Get gets the details of the API Operation specified by its identifier.
//
// resourceGroupName is the name of the resource group. serviceName is the name of the API Management service. apiid is
// API identifier. Must be unique in the current API Management service instance. operationID is operation identifier
// within an API. Must be unique in the current API Management service instance.
func (client APIOperationsClient) Get(ctx context.Context, resourceGroupName string, serviceName string, apiid string, operationID string) (result OperationContract, err error) {
	if err := validation.Validate([]validation.Validation{
		{TargetValue: serviceName,
			Constraints: []validation.Constraint{{Target: "serviceName", Name: validation.MaxLength, Rule: 50, Chain: nil},
				{Target: "serviceName", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "serviceName", Name: validation.Pattern, Rule: `^[a-zA-Z](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$`, Chain: nil}}},
		{TargetValue: apiid,
			Constraints: []validation.Constraint{{Target: "apiid", Name: validation.MaxLength, Rule: 256, Chain: nil},
				{Target: "apiid", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "apiid", Name: validation.Pattern, Rule: `^[^*#&+:<>?]+$`, Chain: nil}}},
		{TargetValue: operationID,
			Constraints: []validation.Constraint{{Target: "operationID", Name: validation.MaxLength, Rule: 256, Chain: nil},
				{Target: "operationID", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "operationID", Name: validation.Pattern, Rule: `^[^*#&+:<>?]+$`, Chain: nil}}}}); err != nil {
		return result, validation.NewErrorWithValidationError(err, "apimanagement.APIOperationsClient", "Get")
	}

	req, err := client.GetPreparer(ctx, resourceGroupName, serviceName, apiid, operationID)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "Get", nil, "Failure preparing request")
		return
	}

	resp, err := client.GetSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "Get", resp, "Failure sending request")
		return
	}

	result, err = client.GetResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "Get", resp, "Failure responding to request")
	}

	return
}

// GetPreparer prepares the Get request.
func (client APIOperationsClient) GetPreparer(ctx context.Context, resourceGroupName string, serviceName string, apiid string, operationID string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"apiId":             autorest.Encode("path", apiid),
		"operationId":       autorest.Encode("path", operationID),
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"serviceName":       autorest.Encode("path", serviceName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2016-10-10"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/apis/{apiId}/operations/{operationId}", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// GetSender sends the Get request. The method will close the
// http.Response Body if it receives an error.
func (client APIOperationsClient) GetSender(req *http.Request) (*http.Response, error) {
	return autorest.SendWithSender(client, req,
		azure.DoRetryWithRegistration(client.Client))
}

// GetResponder handles the response to the Get request. The method always
// closes the http.Response Body.
func (client APIOperationsClient) GetResponder(resp *http.Response) (result OperationContract, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// ListByApis lists a collection of the operations for the specified API.
//
// resourceGroupName is the name of the resource group. serviceName is the name of the API Management service. apiid is
// API identifier. Must be unique in the current API Management service instance. filter is | Field       | Supported
// operators    | Supported functions               |
// |-------------|------------------------|-----------------------------------|
// | name        | ge, le, eq, ne, gt, lt | substringof, startswith, endswith |
// | method      | ge, le, eq, ne, gt, lt | substringof, startswith, endswith |
// | description | ge, le, eq, ne, gt, lt | substringof, startswith, endswith |
// | urlTemplate | ge, le, eq, ne, gt, lt | substringof, startswith, endswith | top is number of records to return.
// skip is number of records to skip.
func (client APIOperationsClient) ListByApis(ctx context.Context, resourceGroupName string, serviceName string, apiid string, filter string, top *int32, skip *int32) (result OperationCollectionPage, err error) {
	if err := validation.Validate([]validation.Validation{
		{TargetValue: serviceName,
			Constraints: []validation.Constraint{{Target: "serviceName", Name: validation.MaxLength, Rule: 50, Chain: nil},
				{Target: "serviceName", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "serviceName", Name: validation.Pattern, Rule: `^[a-zA-Z](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$`, Chain: nil}}},
		{TargetValue: apiid,
			Constraints: []validation.Constraint{{Target: "apiid", Name: validation.MaxLength, Rule: 256, Chain: nil},
				{Target: "apiid", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "apiid", Name: validation.Pattern, Rule: `^[^*#&+:<>?]+$`, Chain: nil}}},
		{TargetValue: top,
			Constraints: []validation.Constraint{{Target: "top", Name: validation.Null, Rule: false,
				Chain: []validation.Constraint{{Target: "top", Name: validation.InclusiveMinimum, Rule: 1, Chain: nil}}}}},
		{TargetValue: skip,
			Constraints: []validation.Constraint{{Target: "skip", Name: validation.Null, Rule: false,
				Chain: []validation.Constraint{{Target: "skip", Name: validation.InclusiveMinimum, Rule: 0, Chain: nil}}}}}}); err != nil {
		return result, validation.NewErrorWithValidationError(err, "apimanagement.APIOperationsClient", "ListByApis")
	}

	result.fn = client.listByApisNextResults
	req, err := client.ListByApisPreparer(ctx, resourceGroupName, serviceName, apiid, filter, top, skip)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "ListByApis", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListByApisSender(req)
	if err != nil {
		result.oc.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "ListByApis", resp, "Failure sending request")
		return
	}

	result.oc, err = client.ListByApisResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "ListByApis", resp, "Failure responding to request")
	}

	return
}

// ListByApisPreparer prepares the ListByApis request.
func (client APIOperationsClient) ListByApisPreparer(ctx context.Context, resourceGroupName string, serviceName string, apiid string, filter string, top *int32, skip *int32) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"apiId":             autorest.Encode("path", apiid),
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"serviceName":       autorest.Encode("path", serviceName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2016-10-10"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}
	if len(filter) > 0 {
		queryParameters["$filter"] = autorest.Encode("query", filter)
	}
	if top != nil {
		queryParameters["$top"] = autorest.Encode("query", *top)
	}
	if skip != nil {
		queryParameters["$skip"] = autorest.Encode("query", *skip)
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/apis/{apiId}/operations", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// ListByApisSender sends the ListByApis request. The method will close the
// http.Response Body if it receives an error.
func (client APIOperationsClient) ListByApisSender(req *http.Request) (*http.Response, error) {
	return autorest.SendWithSender(client, req,
		azure.DoRetryWithRegistration(client.Client))
}

// ListByApisResponder handles the response to the ListByApis request. The method always
// closes the http.Response Body.
func (client APIOperationsClient) ListByApisResponder(resp *http.Response) (result OperationCollection, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// listByApisNextResults retrieves the next set of results, if any.
func (client APIOperationsClient) listByApisNextResults(lastResults OperationCollection) (result OperationCollection, err error) {
	req, err := lastResults.operationCollectionPreparer()
	if err != nil {
		return result, autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "listByApisNextResults", nil, "Failure preparing next results request")
	}
	if req == nil {
		return
	}
	resp, err := client.ListByApisSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		return result, autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "listByApisNextResults", resp, "Failure sending next results request")
	}
	result, err = client.ListByApisResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "listByApisNextResults", resp, "Failure responding to next results request")
	}
	return
}

// ListByApisComplete enumerates all values, automatically crossing page boundaries as required.
func (client APIOperationsClient) ListByApisComplete(ctx context.Context, resourceGroupName string, serviceName string, apiid string, filter string, top *int32, skip *int32) (result OperationCollectionIterator, err error) {
	result.page, err = client.ListByApis(ctx, resourceGroupName, serviceName, apiid, filter, top, skip)
	return
}

// Update updates the details of the operation specified by its identifier.
//
// resourceGroupName is the name of the resource group. serviceName is the name of the API Management service. apiid is
// API identifier. Must be unique in the current API Management service instance. operationID is operation identifier
// within an API. Must be unique in the current API Management service instance. parameters is API Operation Update
// parameters. ifMatch is eTag of the API Operation Entity. ETag should match the current entity state from the header
// response of the GET request or it should be * for unconditional update.
func (client APIOperationsClient) Update(ctx context.Context, resourceGroupName string, serviceName string, apiid string, operationID string, parameters OperationUpdateContract, ifMatch string) (result autorest.Response, err error) {
	if err := validation.Validate([]validation.Validation{
		{TargetValue: serviceName,
			Constraints: []validation.Constraint{{Target: "serviceName", Name: validation.MaxLength, Rule: 50, Chain: nil},
				{Target: "serviceName", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "serviceName", Name: validation.Pattern, Rule: `^[a-zA-Z](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?$`, Chain: nil}}},
		{TargetValue: apiid,
			Constraints: []validation.Constraint{{Target: "apiid", Name: validation.MaxLength, Rule: 256, Chain: nil},
				{Target: "apiid", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "apiid", Name: validation.Pattern, Rule: `^[^*#&+:<>?]+$`, Chain: nil}}},
		{TargetValue: operationID,
			Constraints: []validation.Constraint{{Target: "operationID", Name: validation.MaxLength, Rule: 256, Chain: nil},
				{Target: "operationID", Name: validation.MinLength, Rule: 1, Chain: nil},
				{Target: "operationID", Name: validation.Pattern, Rule: `^[^*#&+:<>?]+$`, Chain: nil}}}}); err != nil {
		return result, validation.NewErrorWithValidationError(err, "apimanagement.APIOperationsClient", "Update")
	}

	req, err := client.UpdatePreparer(ctx, resourceGroupName, serviceName, apiid, operationID, parameters, ifMatch)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "Update", nil, "Failure preparing request")
		return
	}

	resp, err := client.UpdateSender(req)
	if err != nil {
		result.Response = resp
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "Update", resp, "Failure sending request")
		return
	}

	result, err = client.UpdateResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "apimanagement.APIOperationsClient", "Update", resp, "Failure responding to request")
	}

	return
}

// UpdatePreparer prepares the Update request.
func (client APIOperationsClient) UpdatePreparer(ctx context.Context, resourceGroupName string, serviceName string, apiid string, operationID string, parameters OperationUpdateContract, ifMatch string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"apiId":             autorest.Encode("path", apiid),
		"operationId":       autorest.Encode("path", operationID),
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"serviceName":       autorest.Encode("path", serviceName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2016-10-10"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsJSON(),
		autorest.AsPatch(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ApiManagement/service/{serviceName}/apis/{apiId}/operations/{operationId}", pathParameters),
		autorest.WithJSON(parameters),
		autorest.WithQueryParameters(queryParameters),
		autorest.WithHeader("If-Match", autorest.String(ifMatch)))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// UpdateSender sends the Update request. The method will close the
// http.Response Body if it receives an error.
func (client APIOperationsClient) UpdateSender(req *http.Request) (*http.Response, error) {
	return autorest.SendWithSender(client, req,
		azure.DoRetryWithRegistration(client.Client))
}

// UpdateResponder handles the response to the Update request. The method always
// closes the http.Response Body.
func (client APIOperationsClient) UpdateResponder(resp *http.Response) (result autorest.Response, err error) {
	err = autorest.Respond(
		resp,
		client.ByInspecting(),
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusNoContent),
		autorest.ByClosing())
	result.Response = resp
	return
}
