<reponame>iwmobileapplab/AWS-IoTSamples
"""
This sample demonstrates a simple skill built with the Amazon Alexa Skills Kit.
The Intent Schema, Custom Slots, and Sample Utterances for this skill, as well
as testing instructions are located at http://amzn.to/1LzFrj6

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

from __future__ import print_function


# --------------- 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': "Alexa Air Checker - " + 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 = "Welcome to the atomosphere analyzer."
    # 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 = "What's going on?"

    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 trying the Alexa Skills Kit sample. " \
                    "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_color_attributes(favorite_color):
    return {"favoriteColor": favorite_color}


def set_color_in_session(intent, session):
    """ Sets the color 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_color_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()


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 == "MyColorIsIntent":
        return set_color_in_session(intent, session)
    elif intent_name == "WhatsMyColorIntent":
        return get_color_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()
    elif intent_name == "TemperatureIntent":
        return get_temperature(intent, session)
    elif intent_name == "HumidityIntent":
        return get_humidity(intent, session)
    elif intent_name == "PressureIntent":
        return get_pressure(intent, session)
    elif intent_name == "AllIntent":
        return get_all(intent, session)
    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")

    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'])


import boto3
import json
import decimal
import time
from boto3.dynamodb.conditions import Key, Attr
from botocore.exceptions import ClientError


# --------------- Helpers to convert a DynamoDB item to JSON -------------

class DecimalEncoder(json.JSONEncoder):

    def default(self, o):
        if isinstance(o, decimal.Decimal):
            if o % 1 > 0:
                return float(o)
            else:
                return int(o)
        return super(DecimalEncoder, self).default(o)


def decimal_default(obj):
    if isinstance(obj, decimal.Decimal):
        return float(obj)
    raise TypeError


def get_temperature(intent, session):
    """ Gets temperature data from DynamoDB
    """

    res = query()
    session_attributes = {}

    if len(res['Items']) is 0:
        return build_response(session_attributes, build_no_data_response())

    return_response = max(res["Items"], key=(lambda x: x["Timestamp"]))
    latest_record = json.dumps(return_response, default=decimal_default)

    json_obj = json.loads(latest_record)
    timestamp = json_obj['Timestamp']
    temperature = json_obj['payload']['Temperature']
    temperature = str(int(temperature))

    speech_output = 'The temperature is ' + temperature + ' degrees celsius'
    # get formatted date time text from time stamp: 2018-09-03 15:12:10
    date_text = time.strftime('[%Y-%m-%d %H:%M:%S]', time.localtime(int(timestamp) / 1000))

    return build_response(session_attributes, build_speech_response(date_text, speech_output))


def get_humidity(intent, session):
    """ Gets humidity data from DynamoDB
    """

    res = query()
    session_attributes = {}

    if len(res['Items']) is 0:
        return build_response(session_attributes, build_no_data_response())

    return_response = max(res["Items"], key=(lambda x: x["Timestamp"]))
    latest_record = json.dumps(return_response, default=decimal_default)

    json_obj = json.loads(latest_record)
    timestamp = json_obj['Timestamp']
    humidity = json_obj['payload']['Humidity']
    humidity = str(int(humidity))

    speech_output = 'The humidity is ' + humidity + ' percent.'
    date_text = time.strftime('[%Y-%m-%d %H:%M:%S]', time.localtime(int(timestamp) / 1000))

    return build_response(session_attributes, build_speech_response(date_text, speech_output))


def get_pressure(intent, session):
    """ Gets pressure data from DynamoDB
    """

    res = query()
    session_attributes = {}

    if len(res['Items']) is 0:
        return build_response(session_attributes, build_no_data_response())

    return_response = max(res["Items"], key=(lambda x: x["Timestamp"]))
    latest_record = json.dumps(return_response, default=decimal_default)

    json_obj = json.loads(latest_record)
    timestamp = json_obj['Timestamp']
    pressure = json_obj['payload']['Pressure']
    pressure = str(int(pressure))

    speech_output = 'The pressure is ' + pressure + ' hPs.'
    date_text = time.strftime('[%Y-%m-%d %H:%M:%S]', time.localtime(int(timestamp) / 1000))

    return build_response(session_attributes, build_speech_response(date_text, speech_output))


def get_all(intent, session):
    """ Get all kinds of data from DynamoDB
    """

    res = query()
    session_attributes = {}

    if len(res['Items']) is 0:
        return build_response(session_attributes, build_no_data_response())

    return_response = max(res["Items"], key=(lambda x: x["Timestamp"]))
    latest_record = json.dumps(return_response, default=decimal_default)

    json_obj = json.loads(latest_record)
    timestamp = json_obj['Timestamp']
    temperature = json_obj['payload']['Temperature']
    temperature = str(int(temperature))
    pressure = json_obj['payload']['Pressure']
    pressure = str(int(pressure))
    humidity = json_obj['payload']['Humidity']
    humidity = str(int(humidity))

    speech_output = 'The temperature is ' + temperature + ' degrees celsius and humidity is ' + \
        humidity + ' percent. Finally, pressure is ' + pressure + ' hectopascal.'
    date_text = time.strftime('[%Y-%m-%d %H:%M:%S]', time.localtime(int(timestamp) / 1000))

    return build_response(session_attributes, build_speech_response(date_text, speech_output))


def query():

    now = time.time()
    start = now - (24 * 60 * 60)  # 24 hours
    now = str(int(now * 1000))
    start = str(int(start * 1000))

    dynamodb = boto3.resource('dynamodb', region_name='eu-west-1')
    table = dynamodb.Table('SensorData')
    return table.query(
        KeyConditionExpression=Key('DeviceId').eq("esp32_E67D94") & Key('Timestamp').between(start, now),
        ScanIndexForward=False,
        Limit=1
    )


def build_speech_response(date_text, speech_output):
    return {
        'outputSpeech': {
            'type': 'PlainText',
            'text': speech_output
        },
        'card': {
            'type': 'Simple',
            'title': 'Alexa Air Checker',
            'content': date_text + '\n' + speech_output
        },
        'reprompt': {
            'outputSpeech': {
                'type': 'PlainText',
                'text': ''
            }
        },
        'shouldEndSession': True
    }


def build_no_data_response():
    return {
        'outputSpeech': {
            'type': 'PlainText',
            'text': 'There is no data available for the last 24 hours'
        },
        'card': {
            'type': 'Simple',
            'title': 'Alexa Air Checker',
            'content': 'There is no data available for the last 24 hours'
        },
        'reprompt': {
            'outputSpeech': {
                'type': 'PlainText',
                'text': ''
            }
        },
        'shouldEndSession': True
    }

"""
This sample demonstrates a simple skill built with the Amazon Alexa Skills Kit.
The Intent Schema, Custom Slots, and Sample Utterances for this skill, as well
as testing instructions are located at http://amzn.to/1LzFrj6

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

from __future__ import print_function


# --------------- 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': "Alexa Air Checker - " + 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 = "Welcome to the atomosphere analyzer."
    # 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 = "What's going on?"

    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 trying the Alexa Skills Kit sample. " \
                    "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_color_attributes(favorite_color):
    return {"favoriteColor": favorite_color}


def set_color_in_session(intent, session):
    """ Sets the color 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_color_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()


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 == "MyColorIsIntent":
        return set_color_in_session(intent, session)
    elif intent_name == "WhatsMyColorIntent":
        return get_color_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()
    elif intent_name == "TemperatureIntent":
        return get_temperature(intent, session)
    elif intent_name == "HumidityIntent":
        return get_humidity(intent, session)
    elif intent_name == "PressureIntent":
        return get_pressure(intent, session)
    elif intent_name == "AllIntent":
        return get_all(intent, session)
    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")

    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'])


import boto3
import json
import decimal
import time
from boto3.dynamodb.conditions import Key, Attr
from botocore.exceptions import ClientError


# --------------- Helpers to convert a DynamoDB item to JSON -------------

class DecimalEncoder(json.JSONEncoder):

    def default(self, o):
        if isinstance(o, decimal.Decimal):
            if o % 1 > 0:
                return float(o)
            else:
                return int(o)
        return super(DecimalEncoder, self).default(o)


def decimal_default(obj):
    if isinstance(obj, decimal.Decimal):
        return float(obj)
    raise TypeError


def get_temperature(intent, session):
    """ Gets temperature data from DynamoDB
    """

    res = query()
    session_attributes = {}

    if len(res['Items']) is 0:
        return build_response(session_attributes, build_no_data_response())

    return_response = max(res["Items"], key=(lambda x: x["Timestamp"]))
    latest_record = json.dumps(return_response, default=decimal_default)

    json_obj = json.loads(latest_record)
    timestamp = json_obj['Timestamp']
    temperature = json_obj['payload']['Temperature']
    temperature = str(int(temperature))

    speech_output = 'The temperature is ' + temperature + ' degrees celsius'
    # get formatted date time text from time stamp: 2018-09-03 15:12:10
    date_text = time.strftime('[%Y-%m-%d %H:%M:%S]', time.localtime(int(timestamp) / 1000))

    return build_response(session_attributes, build_speech_response(date_text, speech_output))


def get_humidity(intent, session):
    """ Gets humidity data from DynamoDB
    """

    res = query()
    session_attributes = {}

    if len(res['Items']) is 0:
        return build_response(session_attributes, build_no_data_response())

    return_response = max(res["Items"], key=(lambda x: x["Timestamp"]))
    latest_record = json.dumps(return_response, default=decimal_default)

    json_obj = json.loads(latest_record)
    timestamp = json_obj['Timestamp']
    humidity = json_obj['payload']['Humidity']
    humidity = str(int(humidity))

    speech_output = 'The humidity is ' + humidity + ' percent.'
    date_text = time.strftime('[%Y-%m-%d %H:%M:%S]', time.localtime(int(timestamp) / 1000))

    return build_response(session_attributes, build_speech_response(date_text, speech_output))


def get_pressure(intent, session):
    """ Gets pressure data from DynamoDB
    """

    res = query()
    session_attributes = {}

    if len(res['Items']) is 0:
        return build_response(session_attributes, build_no_data_response())

    return_response = max(res["Items"], key=(lambda x: x["Timestamp"]))
    latest_record = json.dumps(return_response, default=decimal_default)

    json_obj = json.loads(latest_record)
    timestamp = json_obj['Timestamp']
    pressure = json_obj['payload']['Pressure']
    pressure = str(int(pressure))

    speech_output = 'The pressure is ' + pressure + ' hPs.'
    date_text = time.strftime('[%Y-%m-%d %H:%M:%S]', time.localtime(int(timestamp) / 1000))

    return build_response(session_attributes, build_speech_response(date_text, speech_output))


def get_all(intent, session):
    """ Get all kinds of data from DynamoDB
    """

    res = query()
    session_attributes = {}

    if len(res['Items']) is 0:
        return build_response(session_attributes, build_no_data_response())

    return_response = max(res["Items"], key=(lambda x: x["Timestamp"]))
    latest_record = json.dumps(return_response, default=decimal_default)

    json_obj = json.loads(latest_record)
    timestamp = json_obj['Timestamp']
    temperature = json_obj['payload']['Temperature']
    temperature = str(int(temperature))
    pressure = json_obj['payload']['Pressure']
    pressure = str(int(pressure))
    humidity = json_obj['payload']['Humidity']
    humidity = str(int(humidity))

    speech_output = 'The temperature is ' + temperature + ' degrees celsius and humidity is ' + \
        humidity + ' percent. Finally, pressure is ' + pressure + ' hectopascal.'
    date_text = time.strftime('[%Y-%m-%d %H:%M:%S]', time.localtime(int(timestamp) / 1000))

    return build_response(session_attributes, build_speech_response(date_text, speech_output))


def query():

    now = time.time()
    start = now - (24 * 60 * 60)  # 24 hours
    now = str(int(now * 1000))
    start = str(int(start * 1000))

    dynamodb = boto3.resource('dynamodb', region_name='eu-west-1')
    table = dynamodb.Table('SensorData')
    return table.query(
        KeyConditionExpression=Key('DeviceId').eq("esp32_E67D94") & Key('Timestamp').between(start, now),
        ScanIndexForward=False,
        Limit=1
    )


def build_speech_response(date_text, speech_output):
    return {
        'outputSpeech': {
            'type': 'PlainText',
            'text': speech_output
        },
        'card': {
            'type': 'Simple',
            'title': 'Alexa Air Checker',
            'content': date_text + '\n' + speech_output
        },
        'reprompt': {
            'outputSpeech': {
                'type': 'PlainText',
                'text': ''
            }
        },
        'shouldEndSession': True
    }


def build_no_data_response():
    return {
        'outputSpeech': {
            'type': 'PlainText',
            'text': 'There is no data available for the last 24 hours'
        },
        'card': {
            'type': 'Simple',
            'title': 'Alexa Air Checker',
            'content': 'There is no data available for the last 24 hours'
        },
        'reprompt': {
            'outputSpeech': {
                'type': 'PlainText',
                'text': ''
            }
        },
        'shouldEndSession': True
    }
This sample demonstrates a simple skill built with the Amazon Alexa Skills Kit. The Intent Schema, Custom Slots, and Sample Utterances for this skill, as well as testing instructions are located at http://amzn.to/1LzFrj6  For additional samples, visit the Alexa Skills Kit Getting Started guide at http://amzn.to/1LGWsLG # --------------- Helpers that build all of the responses ---------------- # "SessionSpeechlet - " + title, # --------------- Functions that control the skill's behavior ------------ If we wanted to initialize the session to have some attributes we could     add those here # 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. # Setting this to true ends the session and exits the skill. Sets the color in the session and prepares the speech to reply to the     user. # 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. # --------------- Events ------------------ Called when the session starts Called when the user launches the skill without specifying what they     want # Dispatch to your skill's launch Called when the user specifies an intent for this skill # Dispatch to your skill's intent handlers Called when the user ends the session.      Is not called when the skill returns should_end_session=true # add cleanup logic here # --------------- Main handler ------------------ Route the incoming request based on type (LaunchRequest, IntentRequest,     etc.) The JSON body of the request is provided in the event parameter. 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") # --------------- Helpers to convert a DynamoDB item to JSON ------------- Gets temperature data from DynamoDB # get formatted date time text from time stamp: 2018-09-03 15:12:10 Gets humidity data from DynamoDB Gets pressure data from DynamoDB Get all kinds of data from DynamoDB # 24 hours