public async execute()

in src/eventSubscription/createWizard/EventSubscriptionCreateStep.ts [20:72]
42 lines of code
9 McCabe index (conditional complexity)

    public async execute(wizardContext: IEventSubscriptionWizardContext): Promise<IEventSubscriptionWizardContext> {
        if (!wizardContext.eventSubscription) {
            let topicId: string;
            switch (wizardContext.topicType) {
                case TopicType.StorageAccount:
                    // tslint:disable-next-line:no-non-null-assertion
                    topicId = (<IStorageAccountWizardContext>wizardContext).storageAccount!.id!;
                    break;
                case TopicType.Subscription:
                    topicId = `/subscriptions/${wizardContext.subscriptionId}`;
                    break;
                case TopicType.ResourceGroup:
                    // tslint:disable-next-line:no-non-null-assertion
                    topicId = (<IResourceGroupWizardContext>wizardContext).resourceGroup!.id!;
                    break;
                case TopicType.EventGridTopic:
                    // tslint:disable-next-line:no-non-null-assertion
                    topicId = (<ITopicWizardContext>wizardContext).topic!.id!;
                    break;
                case TopicType.ContainerRegistry:
                    // tslint:disable-next-line:no-non-null-assertion
                    topicId = (<IContainerRegistryWizardContext>wizardContext).registry!.id!;
                    break;
                case TopicType.EventHubsNamespace:
                    // tslint:disable-next-line:no-non-null-assertion
                    topicId = (<IEventHubsNamespaceWizardContext>wizardContext).eventHubsNamespace!.id!;
                    break;
                case TopicType.IoTHub:
                    // tslint:disable-next-line:no-non-null-assertion
                    topicId = (<IIoTHubWizardContext>wizardContext).iotHub!.id!;
                    break;
                default:
                    throw new Error(localize('unrecognizedTopicType', 'Unrecognized topic type "{0}".', wizardContext.topicType));
            }

            ext.outputChannel.appendLine(localize('creating', 'Creating event subscription "{0}" for topic "{1}"...', wizardContext.newEventSubscriptionName, topicId));

            const client: EventGridManagementClient = createAzureClient(wizardContext, EventGridManagementClient);
            // tslint:disable-next-line:no-non-null-assertion
            wizardContext.eventSubscription = await client.eventSubscriptions.createOrUpdate(topicId, wizardContext.newEventSubscriptionName!, {
                destination: <WebHookEventSubscriptionDestination>{
                    endpointUrl: wizardContext.endpointUrl,
                    endpointType: 'WebHook'
                }
            });

            const message: string = localize('created', 'Successfully created event subscription "{0}".', wizardContext.newEventSubscriptionName);
            ext.outputChannel.appendLine(message);
            vscode.window.showInformationMessage(message);
        }

        return wizardContext;
    }