Module 4 source code

# -*- coding: utf-8 -*-

# Copyright 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: LicenseRef-.amazon.com.-AmznSL-1.0
# Licensed under the Amazon Software License  http://aws.amazon.com/asl/

# This sample demonstrates handling intents from an Alexa skill using the Alexa Skills Kit SDK for Python.
# Please visit https://alexa.design/cookbook for additional examples on implementing slots, dialog management,
# session persistence, api calls, and more.
# This sample is built using the handler classes approach in skill builder.
import logging
import ask_sdk_core.utils as ask_utils

import json
from ask_sdk_model.interfaces.alexa.presentation.apl import (
    RenderDocumentDirective)

from ask_sdk_core.skill_builder import SkillBuilder
from ask_sdk_core.dispatch_components import AbstractRequestHandler
from ask_sdk_core.dispatch_components import AbstractExceptionHandler
from ask_sdk_core.handler_input import HandlerInput

from ask_sdk_model import Response

logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)


class LaunchRequestHandler(AbstractRequestHandler):
    """Handler for Skill Launch."""
    def can_handle(self, handler_input):
        # type: (HandlerInput) -> bool

        return ask_utils.is_request_type("LaunchRequest")(handler_input)

    def handle(self, handler_input):
        # type: (HandlerInput) -> Response
        speak_output =  f"Welcome to Cake Time. " \
            f"I'll tell you a celebrity name and you try " \
            f"to guess the month and year they were born. " \
            f"See how many you can get! " \
            f"Would you like to play?"

        #====================================================================
        # Add a visual with Alexa Layouts
        #====================================================================

        # Import an Alexa Presentation Language (APL) template
        with open("./documents/APL_simple.json") as apl_doc:
            apl_simple = json.load(apl_doc)

            if ask_utils.get_supported_interfaces(
                    handler_input).alexa_presentation_apl is not None:
                handler_input.response_builder.add_directive(
                    RenderDocumentDirective(
                        document=apl_simple,
                        datasources={
                            "myData": {
                                #====================================================================
                                # Set a headline and subhead to display on the screen if there is one
                                #====================================================================
                                "Title": 'Say "yes."',
                                "Subtitle": 'Play some Cake Time.',
                            }
                        }
                    )
                )

        return (
            handler_input.response_builder
                .speak(speak_output)
                .ask(speak_output)
                .response
        )


class PlayGameHandler(AbstractRequestHandler):
    """Handler for Skill Launch."""
    def can_handle(self, handler_input):
        # type: (HandlerInput) -> bool

        return (
            ask_utils.is_request_type("IntentRequest")(handler_input)
                and ask_utils.is_intent_name("AMAZON.YesIntent")(handler_input)
        )

    def handle(self, handler_input):
        # type: (HandlerInput) -> Response
        from celebrityFunctions import get_random_celeb
        celeb = get_random_celeb()
        title = celeb["name"]
        speak_output =  f'In what month and year was {celeb["name"]} born?'

        #====================================================================
        # Add a visual with Alexa Layouts
        #====================================================================

        # Import an Alexa Presentation Language (APL) template
        with open("./documents/APL_simple.json") as apl_doc:
            apl_simple = json.load(apl_doc)

            if ask_utils.get_supported_interfaces(
                    handler_input).alexa_presentation_apl is not None:
                handler_input.response_builder.add_directive(
                    RenderDocumentDirective(
                        document=apl_simple,
                        datasources={
                            "myData": {
                                #====================================================================
                                # Set a headline and subhead to display on the screen if there is one
                                #====================================================================
                                "Title": title,
                                "Subtitle": 'What month and year were they born?',
                            }
                        }
                    )
                )

        return (
            handler_input.response_builder
                .speak(speak_output)
                .ask(speak_output)
                .response
        )


class GetBirthdayIntentHandler(AbstractRequestHandler):
    """Handler for Skill Launch."""
    def can_handle(self, handler_input):
        # type: (HandlerInput) -> bool

        return (
            ask_utils.is_request_type("IntentRequest")(handler_input)
                and ask_utils.is_intent_name("GetBirthdayIntent")(handler_input)
        )

    def handle(self, handler_input):
        # type: (HandlerInput) -> Response
        year = ask_utils.request_util.get_slot(handler_input, "year").value
        month = ask_utils.request_util.get_slot(handler_input, "month").value

        # Share the answer
        speak_output = f'Your answer was {month} of {year}. Would you like to try again?'

        #====================================================================
        # Add a visual with Alexa Layouts
        #====================================================================

        # Import an Alexa Presentation Language (APL) template
        with open("./documents/APL_simple.json") as apl_doc:
            apl_simple = json.load(apl_doc)

            if ask_utils.get_supported_interfaces(
                    handler_input).alexa_presentation_apl is not None:
                handler_input.response_builder.add_directive(
                    RenderDocumentDirective(
                        document=apl_simple,
                        datasources={
                            "myData": {
                                #====================================================================
                                # Set a headline and subhead to display on the screen if there is one
                                #====================================================================
                                "Title": f'{month}, {year}',
                                "Subtitle": 'Try again?',
                            }
                        }
                    )
                )

        return (
            handler_input.response_builder
                .speak(speak_output)
                .ask(speak_output)
                .response
        )


class HelloWorldIntentHandler(AbstractRequestHandler):
    """Handler for Hello World Intent."""
    def can_handle(self, handler_input):
        # type: (HandlerInput) -> bool
        return ask_utils.is_intent_name("HelloWorldIntent")(handler_input)

    def handle(self, handler_input):
        # type: (HandlerInput) -> Response
        speak_output = "Hello World!"

        return (
            handler_input.response_builder
                .speak(speak_output)
                # .ask("add a reprompt if you want to keep the session open for the user to respond")
                .response
        )


class HelpIntentHandler(AbstractRequestHandler):
    """Handler for Help Intent."""
    def can_handle(self, handler_input):
        # type: (HandlerInput) -> bool
        return ask_utils.is_intent_name("AMAZON.HelpIntent")(handler_input)

    def handle(self, handler_input):
        # type: (HandlerInput) -> Response
        speak_output = "You can say hello to me! How can I help?"

        return (
            handler_input.response_builder
                .speak(speak_output)
                .ask(speak_output)
                .response
        )


class CancelOrStopIntentHandler(AbstractRequestHandler):
    """Single handler for Cancel and Stop Intent."""
    def can_handle(self, handler_input):
        # type: (HandlerInput) -> bool
        return (ask_utils.is_intent_name("AMAZON.CancelIntent")(handler_input) or
                ask_utils.is_intent_name("AMAZON.StopIntent")(handler_input))

    def handle(self, handler_input):
        # type: (HandlerInput) -> Response
        speak_output = "Goodbye!"

        return (
            handler_input.response_builder
                .speak(speak_output)
                .response
        )

class FallbackIntentHandler(AbstractRequestHandler):
    """Single handler for Fallback Intent."""
    def can_handle(self, handler_input):
        # type: (HandlerInput) -> bool
        return ask_utils.is_intent_name("AMAZON.FallbackIntent")(handler_input)

    def handle(self, handler_input):
        # type: (HandlerInput) -> Response
        logger.info("In FallbackIntentHandler")
        speech = "Hmm, I'm not sure. You can say Hello or Help. What would you like to do?"
        reprompt = "I didn't catch that. What can I help you with?"

        return handler_input.response_builder.speak(speech).ask(reprompt).response

class SessionEndedRequestHandler(AbstractRequestHandler):
    """Handler for Session End."""
    def can_handle(self, handler_input):
        # type: (HandlerInput) -> bool
        return ask_utils.is_request_type("SessionEndedRequest")(handler_input)

    def handle(self, handler_input):
        # type: (HandlerInput) -> Response

        # Any cleanup logic goes here.

        return handler_input.response_builder.response


class IntentReflectorHandler(AbstractRequestHandler):
    """The intent reflector is used for interaction model testing and debugging.
    It will simply repeat the intent the user said. You can create custom handlers
    for your intents by defining them above, then also adding them to the request
    handler chain below.
    """
    def can_handle(self, handler_input):
        # type: (HandlerInput) -> bool
        return ask_utils.is_request_type("IntentRequest")(handler_input)

    def handle(self, handler_input):
        # type: (HandlerInput) -> Response
        intent_name = ask_utils.get_intent_name(handler_input)
        speak_output = "You just triggered " + intent_name + "."

        return (
            handler_input.response_builder
                .speak(speak_output)
                # .ask("add a reprompt if you want to keep the session open for the user to respond")
                .response
        )


class CatchAllExceptionHandler(AbstractExceptionHandler):
    """Generic error handling to capture any syntax or routing errors. If you receive an error
    stating the request handler chain is not found, you have not implemented a handler for
    the intent being invoked or included it in the skill builder below.
    """
    def can_handle(self, handler_input, exception):
        # type: (HandlerInput, Exception) -> bool
        return True

    def handle(self, handler_input, exception):
        # type: (HandlerInput, Exception) -> Response
        logger.error(exception, exc_info=True)

        speak_output = "Sorry, I had trouble doing what you asked. Please try again."

        return (
            handler_input.response_builder
                .speak(speak_output)
                .ask(speak_output)
                .response
        )

# The SkillBuilder object acts as the entry point for your skill, routing all request and response
# payloads to the handlers above. Make sure any new handlers or interceptors you've
# defined are included below. The order matters - they're processed top to bottom.


sb = SkillBuilder()

sb.add_request_handler(LaunchRequestHandler())
sb.add_request_handler(PlayGameHandler())
sb.add_request_handler(GetBirthdayIntentHandler())
sb.add_request_handler(HelloWorldIntentHandler())
sb.add_request_handler(HelpIntentHandler())
sb.add_request_handler(CancelOrStopIntentHandler())
sb.add_request_handler(FallbackIntentHandler())
sb.add_request_handler(SessionEndedRequestHandler())
sb.add_request_handler(IntentReflectorHandler()) # make sure IntentReflectorHandler is last so it doesn't override your custom intent handlers

sb.add_exception_handler(CatchAllExceptionHandler())

lambda_handler = sb.lambda_handler()