Are We Running Today?

from __future__ import print_function
import zipcode
import urllib2
import json

"""
This sample demonstrates a simple skill built with the Amazon Alexa Skills Kit.
This skill is built for the re:Invent 2016 Alexa Skills Challenge.

For additional samples, visit the Alexa Skills Kit Getting Started guide at
http://amzn.to/1LGWsLG
"""


# --------------- Helpers that build all of the responses ----------------------

def build_speechlet_response(title, output, reprompt_text, should_end_session):
    return {
        'outputSpeech': {
            'type': 'SSML',
            'ssml': output
        },
        'card': {
            'type': 'Simple',
            'title': "SessionSpeechlet - " + title,
            'content': "SessionSpeechlet - " + output
        },
        'reprompt': {
            'outputSpeech': {
                'type': 'PlainText',
                'text': reprompt_text
            }
        },
        'shouldEndSession': should_end_session
    }


def build_response(session_attributes, speechlet_response):
    return {
        'version': '1.0',
        'sessionAttributes': session_attributes,
        'response': speechlet_response
    }


# --------------- Functions that control the skill's behavior ------------------

def get_welcome_response():
    """ If we wanted to initialize the session to have some attributes we could
    add those here
    """

    session_attributes = {}
    card_title = "Welcome"
    speech_output = "<speak>Welcome to the Alexa Skills Challenge Run Club sample. " \
                    "Please tell me the zip code where you run by saying, " \
                    "my zip code is <say-as interpret-as=\"spell-out\">98670</say-as>.</speak>"
    # If the user either does not reply to the welcome message or says something
    # that is not understood, they will be prompted again with this text.
    reprompt_text = "<speak>Please tell me the zip code where you run by saying, " \
                    "my zip code is <say-as interpret-as=\"spell-out\">98670</say-as>.</speak>"
    should_end_session = False
    return build_response(session_attributes, build_speechlet_response(
        card_title, speech_output, reprompt_text, should_end_session))


def handle_session_end_request():
    card_title = "Session Ended"
    speech_output = "<speak>Thank you for trying the Alexa Skills Challenge Run Club sample. " \
                    "Have a nice day!</speak>"
    # Setting this to true ends the session and exits the skill.
    should_end_session = True
    return build_response({}, build_speechlet_response(
        card_title, speech_output, None, should_end_session))


def create_zip_code_attribute(zip_code):
    return {"zipCode": zip_code}


def set_zip_code_in_session(intent, session):
    """ Sets the zip code in the session and prepares the speech to reply to the
    user.
    """

    card_title = intent['name']
    session_attributes = {}
    should_end_session = False

    if 'zipCode' in intent['slots']:
        zip_code = intent['slots']['zipCode']['value']
        session_attributes = create_zip_code_attribute(zip_code)
        speech_output = "<speak>I now know your zip code is <say-as interpret-as=\"spell-out\">" + \
                        zip_code + \
                        "</say-as>. You can ask me if the weather is good for running by saying, " \
                        "are we running today?</speak>"
        reprompt_text = "<speak>You can ask me if the weather is good for running by saying, " \
                        "are we running today?</speak>"
    else:
        speech_output = "<speak>I'm not sure what your zip code is. " \
                        "Please try again.</speak>"
        reprompt_text = "<speak>I'm not sure what your zip code is. " \
                        "You can tell me your zip code by saying, " \
                        "my zip code is <say-as interpret-as=\"spell-out\">98670</say-as>.</speak>"
    return build_response(session_attributes, build_speechlet_response(
        card_title, speech_output, reprompt_text, should_end_session))


def get_running_status_from_session(intent, session):
    session_attributes = {}
    reprompt_text = None
    should_end_session = False

    if session.get('attributes', {}) and "zipCode" in session.get('attributes', {}):
        zip_code = session['attributes']['zipCode']
        zip_info = zipcode.isequal(str(zip_code))
        if zip_info is not None:
            base_url = 'https://api.darksky.net/forecast/'
            secret = '57918eaadad536824c2f7e98d9a701bc'
            url = base_url + secret + '/' + str(zip_info.lat) + ',' + str(zip_info.lon)
            print("url = " + url)
            req = urllib2.Request(url)
            response = urllib2.urlopen(req)
            forecast = json.load(response)

            if forecast['currently']['precipIntensity'] < 0.01:
                speech_output = '<speak>Now is a great time for a run!</speak>'
                should_end_session = True
            else:
                speech_output = '<speak>I currently see ' + forecast['currently'][
                    'summary'] + '. Try a Nike Training Club session instead.</speak>'
                should_end_session = True

        else:
            speech_output = '<speak>I was unable to locate zip code <say-as interpret-as=\"spell-out\">' + zip_code + '</say-as>.</speak>'
            should_end_session = True
    else:
        speech_output = "<speak>I'm not sure what your zip code is. " \
                        "You can say, my zip code is <say-as interpret-as=\"spell-out\">98670</say-as>.</speak>"
        should_end_session = False

    # Setting reprompt_text to None signifies that we do not want to reprompt
    # the user. If the user does not respond or says something that is not
    # understood, the session will end.
    return build_response(session_attributes, build_speechlet_response(
        intent['name'], speech_output, reprompt_text, should_end_session))


# --------------- Events ------------------

def on_session_started(session_started_request, session):
    """ Called when the session starts """

    print("on_session_started requestId=" + session_started_request['requestId']
          + ", sessionId=" + session['sessionId'])


def on_launch(launch_request, session):
    """ Called when the user launches the skill without specifying what they
    want
    """

    print("on_launch requestId=" + launch_request['requestId'] +
          ", sessionId=" + session['sessionId'])
    # Dispatch to your skill's launch
    return get_welcome_response()


def on_intent(intent_request, session):
    """ Called when the user specifies an intent for this skill """

    print("on_intent requestId=" + intent_request['requestId'] +
          ", sessionId=" + session['sessionId'])

    intent = intent_request['intent']
    intent_name = intent_request['intent']['name']

    print("intent_name = " + intent_name)

    # Dispatch to your skill's intent handlers
    if intent_name == "MyZipCodeIsIntent":
        return set_zip_code_in_session(intent, session)
    elif intent_name == "AreWeRunningIntent":
        return get_running_status_from_session(intent, session)
    elif intent_name == "AMAZON.HelpIntent":
        return get_welcome_response()
    elif intent_name == "AMAZON.CancelIntent" or intent_name == "AMAZON.StopIntent":
        return handle_session_end_request()
    else:
        raise ValueError("Invalid intent")


def on_session_ended(session_ended_request, session):
    """ Called when the user ends the session.

    Is not called when the skill returns should_end_session=true
    """
    print("on_session_ended requestId=" + session_ended_request['requestId'] +
          ", sessionId=" + session['sessionId'])
    # add cleanup logic here


# --------------- Main handler ------------------

def lambda_handler(event, context):
    """ Route the incoming request based on type (LaunchRequest, IntentRequest,
    etc.) The JSON body of the request is provided in the event parameter.
    """
    print("event.session.application.applicationId=" +
          event['session']['application']['applicationId'])

    if (event['session']['application']['applicationId'] !=
            "amzn1.echo-sdk-ams.app.28482808-70ba-4ada-bc33-2654227f2aa5"):
        raise ValueError("Invalid Application ID")

    if event['session']['new']:
        on_session_started({'requestId': event['request']['requestId']},
                           event['session'])

    if event['request']['type'] == "LaunchRequest":
        return on_launch(event['request'], event['session'])
    elif event['request']['type'] == "IntentRequest":
        return on_intent(event['request'], event['session'])
    elif event['request']['type'] == "SessionEndedRequest":
        return on_session_ended(event['request'], event['session'])