「アレクサ、部屋の温度を教えて」Alexa skillを作る

'use strict';

/**
 * 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
 */

var http = require('http');

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

function buildSpeechletResponse(title, output, repromptText, shouldEndSession) {
    return {
        outputSpeech: {
            type: 'PlainText',
            text: output,
        },
        card: {
            type: 'Simple',
            title: "SessionSpeechlet - " + title,
            content: "SessionSpeechlet - " + output,
        },
        reprompt: {
            outputSpeech: {
                type: 'PlainText',
                text: repromptText,
            },
        },
        shouldEndSession: shouldEndSession
    };
}

function buildResponse(sessionAttributes, speechletResponse) {
    return {
        version: '1.0',
        sessionAttributes,
        response: speechletResponse,
    };
}


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

function getWelcomeResponse(callback) {
    // If we wanted to initialize the session to have some attributes we could add those here.
    // セッションを初期化していくつかの属性を持たせたい場合は、それらをここに追加できます。
    const sessionAttributes = {};
    const cardTitle = 'Welcome';
    const speechOutput = "２階の温度を教えてなどと話しかけると、それを答えます。";
    // 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.
    // ユーザーがウェルカムメッセージに返信しないか、理解できないことを言った場合、このテキストが表示されます。
    const repromptText = "私は温湿度計よっ！あなたの願い事をおっしゃりっ！";
    const shouldEndSession = false;

    callback(sessionAttributes,
        buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
}

function handleSessionEndRequest(callback) {
    const cardTitle = 'Session Ended';
    const speechOutput = 'Thank you for trying the Alexa Skills Kit sample. Have a nice day!';
    // Setting this to true ends the session and exits the skill.
    const shouldEndSession = true;

    callback({}, buildSpeechletResponse(cardTitle, speechOutput, null, shouldEndSession));
}

function createLocationAttributes(location) {
    return {
        location: location
    };
}

/**
 * Read temperature in the session and prepares the speech to reply to the user.
 */
function readTemperatureInSession(intent, session, callback) {
    const cardTitle = intent.name;
    const LocationSlot = intent.slots.Location;
    const MeasurementSlot = intent.slots.Measurement;
    let repromptText = '';
    let sessionAttributes = {};
    const shouldEndSession = false;
    let speechOutput = '';
	var body = '';
	var blynkAuthToken;
	var blynkPin;

    var location = LocationSlot.value;
    if (location == '' && session.attributes) {
        location = session.attributes.location;
    }
    if (location === '') {
        location = '二階';
    }
    switch (location) {
        case '二階':
            blynkAuthToken = '****_nikaino_BME280_notoken_****'; // 二階のBME280のtoken
            break;
        case '仏間':
            blynkAuthToken = '***_butsumano_BME280_notoken_***'; // 仏間のBME280のtoken
            break;
    }

    var measurement = MeasurementSlot.value;
    if (measurement === '') {
        measurement = '温度';
    }
    switch (measurement) {
        case '何度':
        case '気温':
        case '室温':
        case '温度':
            blynkPin = 'V0';
            break;
        case '湿気':
        case '湿度':
            blynkPin = 'V1';
            break;
        case '大気圧':
        case '気圧':
            blynkPin = 'V2';
            break;
    }

	var httpPromise = new Promise( function(resolve,reject){
		http.get({
			host: 'blynk-cloud.com',
			path: '/' + blynkAuthToken + '/get/' + blynkPin,
			port: '80'
		}, function(response) {
			// Continuously update stream with data
			response.on('data', function(d) {
				body += d;
			});
			response.on('end', function() {
				// Data reception is done, do whatever with it!
				console.log(body);
				resolve('Done Sending');
			});
		});
	});
	httpPromise.then(
		function(data) {
			console.log('Function called succesfully:', data);
			var info = parseFloat(JSON.parse(body));
			if (measurement === '何度' ) {
			speechOutput = location + 'は ' ;
			} else {
			speechOutput = location + 'の ' + measurement + 'は ';
			}
        	repromptText = speechOutput;
			switch (measurement) {
                default:
                case '何度':
                case '気温':
                case '室温':
                case '温度':
        			speechOutput = speechOutput + info.toFixed(1) + '度 です。';
		        	repromptText = repromptText + info.toFixed(1) + '℃です。';
                    break;
                case '湿気':
                case '湿度':
        			speechOutput = speechOutput + info.toFixed(1) + 'パーセント です。';
		        	repromptText = repromptText + info.toFixed(1) + '%です。';
                    break;
                case '大気圧':
                case '気圧':
        			speechOutput = speechOutput + info.toFixed(0) + 'ヘクトパスカル です。';
		        	repromptText = repromptText + info.toFixed(0) + 'hPaです。';
                    break;
			}
			console.log(speechOutput);
			sessionAttributes = createLocationAttributes(location);
			callback(sessionAttributes,buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
		},
		function(err) {
			console.log('An error occurred:', err);
		}
	);
}

// --------------- Events -----------------------

/**
 * Called when the session starts.
 */
function onSessionStarted(sessionStartedRequest, session) {
    console.log("onSessionStarted requestId=${sessionStartedRequest.requestId}, sessionId=${session.sessionId}");
}

/**
 * Called when the user launches the skill without specifying what they want.
 */
function onLaunch(launchRequest, session, callback) {
    console.log("onLaunch requestId=${launchRequest.requestId}, sessionId=${session.sessionId}");

    // Dispatch to your skill's launch.
    getWelcomeResponse(callback);
}

/**
 * Called when the user specifies an intent for this skill.
 */
function onIntent(intentRequest, session, callback) {
    console.log("onIntent requestId=${intentRequest.requestId}, sessionId=${session.sessionId}");

    const intent = intentRequest.intent;
    const intentName = intentRequest.intent.name;

    // Dispatch to your skill's intent handlers
    if (intentName === 'GetMeasurement') {
        readTemperatureInSession(intent, session, callback);
    } else if (intentName === 'AMAZON.HelpIntent') {
        getWelcomeResponse(callback);
    } else if (intentName === 'AMAZON.StopIntent' || intentName === 'AMAZON.CancelIntent') {
        handleSessionEndRequest(callback);
    } else {
        throw new Error('Invalid intent');
    }
}

/**
 * Called when the user ends the session.
 * Is not called when the skill returns shouldEndSession=true.
 */
function onSessionEnded(sessionEndedRequest, session) {
    console.log("onSessionEnded requestId=${sessionEndedRequest.requestId}, sessionId=${session.sessionId}");
    // 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.
exports.handler = (event, context) => {
    try {
        console.log("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]') {
             context.fail("Invalid Application ID");
        }
        */

        if (event.session.new) {
            onSessionStarted({ requestId: event.request.requestId }, event.session);
        }

        if (event.request.type === 'LaunchRequest') {
            onLaunch(event.request,
                event.session,
                function callback(sessionAttributes, speechletResponse) {
					context.succeed(buildResponse(sessionAttributes, speechletResponse));
				});
        } else if (event.request.type === 'IntentRequest') {
            onIntent(event.request,
                event.session,
                function callback(sessionAttributes, speechletResponse) {
					context.succeed(buildResponse(sessionAttributes, speechletResponse));
				});
        } else if (event.request.type === 'SessionEndedRequest') {
            onSessionEnded(event.request, event.session);
            context.succeed();
        }
    } catch (e) {
        context.fail("Exception: " + e);
    }
};