Sample Alexa Skill handler for Auto-Delegated Dialog

sample-handler-auto-delegated.js

export class FindDogIntentHandler implements RequestHandler {
    canHandle(handlerInput: HandlerInput): boolean {
        const request = handlerInput.requestEnvelope.request;
        return ((request.type === 'IntentRequest' && request.intent.name === 'FindADogIntent' && request.dialogState == 'COMPLETED')
            || (handlerInput.requestEnvelope.request.type === 'LaunchRequest'));
    }

    async handle(handlerInput: HandlerInput): Promise<Response> {

        const { requestEnvelope, serviceClientFactory, responseBuilder } = handlerInput
        const context = requestEnvelope.context;
        let rb = responseBuilder.getResponse();

        let currentIntent;
        if (requestEnvelope.request.type === 'IntentRequest') {
            currentIntent = requestEnvelope.request.intent;
        }
    
        if (context) {
            const {apiAccessToken, apiEndpoint, device} = context.System;
            const aas = new AlexaApiService(apiAccessToken, apiEndpoint, device, serviceClientFactory);
            try {
                const address: services.deviceAddress.ShortAddress = await aas.callAddressServiceClientApi();
                console.log('[SUCCESS] - Retrieving address info', address.postalCode);

                const { attributesManager } = handlerInput;
                let sessionAttributes = attributesManager.getSessionAttributes();
                sessionAttributes['postalCode'] = address.postalCode;
                attributesManager.setSessionAttributes(sessionAttributes);

                rb = responseBuilder
                .speak(MessageHelper.randomMessage(RandomMessageTypes.WELCOME))
                .getResponse();

            } catch (error) {
                // throw error here to be caught by the custom error handler
                throw error;
            }
        } else {
            // throw generic error if there is no context object (unlikely)
            throw new Error('Context object not found')
        }
    
         return rb;
    }
}