main.py

from __future__ import print_function

# from pprint import pprint

import requests

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

def build_speechlet_response(title, output, reprompt_text, should_end_session):
    return {
        'outputSpeech': {
            'type': 'PlainText',
            'text': output
        },
        'card': {
            'type': 'Simple',
            'title': title,
            'content': 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 ------------------
base_api = 'http://parking.api.smgov.net'
headers = {"Accept" : "application/json"}

def get_all_lots():
    r = requests.get(base_api + '/lots/', headers=headers)  
    return r.json()

# pprint(get_all_lots())

def get_all_lot_names(intent, session):
    # card_title = intent['name']
    card_title = 'Lot Names'
    session_attributes = {}
    should_end_session = False

    lot_names = [lot['name'] for lot in get_all_lots()]
    lot_names = ','.join(lot_names)
    print(lot_names)
    speech_output = "The lot names in Santa Monica are," + lot_names + ".  Would you like to get details on a lot?"
    reprompt_text = speech_output
    return build_response(session_attributes, build_speechlet_response(
        card_title, speech_output, reprompt_text, should_end_session))


def get_lot_matching(lot_name):
    r = requests.get(base_api + '/lots/matching/' + lot_name, headers=headers)
    return r.json()[0]


def get_lot_details(intent, session):
    print('get_lot_details')
    # card_title = intent['name']
    card_title = 'Lot Details'
    session_attributes = {}
    should_end_session = False

    lot_name = intent['slots']['lot_name']['value']
    print('lot_name')
    print(lot_name)

    # correct pier pronunciation
    if any(item in lot_name for item in ['Pierre deck', 'Pierre']):
        lot_name = 'Pier Deck'

    print(lot_name)
    try:
        lot = get_lot_matching(lot_name)
        speech_output = lot['name'] + \
            ' has ' + str(lot['available_spaces']) + \
            ' available spaces.  It is located at ' + \
            lot['street_address'] + '.  Would you like to get details on another lot?'
    except:
        speech_output = 'Sorry, ' + lot_name + \
            ' is not recognized.  Please say, ' \
            'list parking lots, for recognized names.  Would you like to get details on another lot?'

    reprompt_text = speech_output
    return build_response(session_attributes, build_speechlet_response(
        card_title, speech_output, reprompt_text, should_end_session))
    # print lot['description']
    # print lot['available_spaces']
    # print lot['street_address']


def get_lot_with_most_spaces(intent, session):
    print('get_lot_with_most_spaces')
    # card_title = intent['name']
    card_title = 'Emptiest Lot'
    session_attributes = {}
    should_end_session = True

    lot_with_most_spaces = None
    max_spaces = None
    for lot in get_all_lots():  
        if max_spaces < lot['available_spaces']:
            max_spaces = lot['available_spaces']
            lot_with_most_spaces = lot['name']
            street_address = lot['street_address']
    speech_output = lot_with_most_spaces + ' is the emptiest lot with ' + \
        str(max_spaces) + ' available spaces.  It is located at ' + lot['street_address']
    reprompt_text = speech_output
    return build_response(session_attributes, build_speechlet_response(
        card_title, speech_output, reprompt_text, should_end_session))


# def recent_meter_events():
#   r = requests.get(base_api + '/meters/events', headers=headers)
#   pprint(r.json())

# def get_lot_names():

# get_all_lot_names()
# print get_lot_matching('Beach House')
# get_lot_details('library')
# get_lot_with_most_spaces()
# recent_meter_events()


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 = "Welcome to Santa Monica parking information. " \
                    "Example commands are, " \
                    "List parking lots, " \
                    "Details for Structure 1, " \
                    "How is parking at Library" \
                    # "My favorite parking lot is Structure 1," \
    # 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 = "Example commands are, " \
                    "List parking lots, " \
                    "Details for Structure 1, " \
                    "How is parking at Library " 
                    # "My favorite parking lot is Structure 1," \
    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 = "Thank you for checking parking in Santa Monica. " \
                    "Have a nice day! "
    # 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_favorite_lot_attributes(favorite_lot):
    return {"favoriteLot": favorite_lot}


# def set_lot_in_session(intent, session):
#     """ Sets the lot in the session and prepares the speech to reply to the
#     user.
#     """

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

#     if 'Color' in intent['slots']:
#         favorite_color = intent['slots']['Color']['value']
#         session_attributes = create_favorite_color_attributes(favorite_color)
#         speech_output = "I now know your favorite color is " + \
#                         favorite_color + \
#                         ". You can ask me your favorite color by saying, " \
#                         "what's my favorite color?"
#         reprompt_text = "You can ask me your favorite color by saying, " \
#                         "what's my favorite color?"
#     else:
#         speech_output = "I'm not sure what your favorite color is. " \
#                         "Please try again."
#         reprompt_text = "I'm not sure what your favorite color is. " \
#                         "You can tell me your favorite color by saying, " \
#                         "my favorite color is red."
#     return build_response(session_attributes, build_speechlet_response(
#         card_title, speech_output, reprompt_text, should_end_session))


# def get_lot_from_session(intent, session):
#     session_attributes = {}
#     reprompt_text = None

#     if session.get('attributes', {}) and "favoriteColor" in session.get('attributes', {}):
#         favorite_color = session['attributes']['favoriteColor']
#         speech_output = "Your favorite color is " + favorite_color + \
#                         ". Goodbye."
#         should_end_session = True
#     else:
#         speech_output = "I'm not sure what your favorite color is. " \
#                         "You can say, my favorite color is red."
#         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()

#FIX
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']

    # Dispatch to your skill's intent handlers
    # if intent_name == "MyLotIsIntent":
    #     return set_lot_in_session(intent, session)
    # elif intent_name == "WhatIsMyLotIntent":
    #     return get_lot_from_session(intent, session)
    print('intent_name: ' + intent_name)
    print('intent: ')
    print(intent)
    if intent_name == "GetAllLotNames":
        return get_all_lot_names(intent, session)
    elif intent_name == "GetLotDetails":
        return get_lot_details(intent, session)
    elif intent_name == "GetLotWithMostSpaces":
        return get_lot_with_most_spaces(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'])

    """
    Uncomment this if statement and populate with your skill's application ID to
    prevent someone else from configuring a skill that sends requests to this
    function.
    """
    # if (event['session']['application']['applicationId'] !=
    #         "amzn1.echo-sdk-ams.app.[unique-value-here]"):
    #     raise ValueError("Invalid Application ID")
    print('EVENT:')
    print(event)

    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'])


# test = {
#   "session": {
#     "sessionId": "SessionId.0014e394-67a9-454a-9778-5994e36df52d",
#     "application": {
#       "applicationId": "amzn1.ask.skill.5ead8604-c521-4b7f-8444-782287a4de0d"
#     },
#     "attributes": {},
#     "user": {
#       "userId": "amzn1.ask.account.AHZF4H2AG6SD6ZP2TJCKEOSKGCOHME52MFDVW5UUZ2PNSQRGTIFCCBEQTIXLYBBJHYEDH2HS5TB334F6EZVSTGPONX4RWECLYFBBZV43SSHIAZ2BLJMSJKTFE5ZPWQJ2URGH5RKANJFAEW5ACN5EQ7GQ2P4HD2WAYWSRNO2YIPGOLYIU3CJADDF2QWRAFWWZSAECDXG7PH32QCY"
#     },
#     "new": true
#   },
#   "request": {
#     "type": "IntentRequest",
#     "requestId": "EdwRequestId.55f97461-1c4d-40b8-a5eb-83e6182f3dd6",
#     "locale": "en-US",
#     "timestamp": "2017-06-22T20:11:53Z",
#     "intent": {
#       "name": "GetAllLotNames",
#       "slots": {}
#     }
#   },
#   "version": "1.0"
# }

# lambda_handler()