どこバス（AWS Lambda）

index.js

'use strict';
var Alexa = require('alexa-sdk');

//=========================================================================================================================================
//TODO: このコメント行より下の項目に注目してください。
//=========================================================================================================================================

//Replace with your app ID (OPTIONAL).  You can find this value at the top of your skill's page on http://developer.amazon.com.  
//Make sure to enclose your value in quotes, like this: var APP_ID = "amzn1.ask.skill.bb4045e6-b3e8-4133-b650-72923c5980f1";
var APP_ID = undefined;

var SKILL_NAME = "どこバス";
var HELP_MESSAGE = "バス情報を知りたい時は「バスどこ」と、終わりたい時は「おしまい」と言ってください。どうしますか？";
var HELP_REPROMPT = "どうしますか？";
var STOP_MESSAGE = "さようなら";

//=========================================================================================================================================
//この行から下のコードに変更を加えると、スキルが動作しなくなるかもしれません。わかる人のみ変更を加えてください。  
//=========================================================================================================================================
exports.handler = function(event, context, callback) {
  var alexa = Alexa.handler(event, context);
  alexa.APP_ID = APP_ID;
  alexa.registerHandlers(handlers);
  alexa.execute();
};

const handlers = {
  'LaunchRequest': function () {
    this.emit('GetNewFactIntent');
  },
  'GetNewFactIntent': function () {
    var that = this;
    var speechOutput = '';
    getBusInfo(function(sekins) {
      if (sekins.length == 0) {
        speechOutput = 'バス情報は見つかりませんでした。';
      } else {
        //speechOutput += 'バス情報は全部で' + sekins.length + '件あります。';
        for (var i = 0; i < sekins.length; i++) {
          var jikoku = sekins[i].teiryujojikoku;
          var unko = sekins[i].unkojokyo;
          if (jikoku == '') {
            speechOutput += '当面発着予定がないか運行しておりません。';
            break;
          }
          if (unko == '＊') {
            speechOutput += jikoku + 'のバスは、まだわかりません。';
            var remain = sekins.length - i - 1;
            if (remain > 0) {
              speechOutput += '残りの' + remain + '件は省略します。';
              break;
            }
          } else {
            speechOutput +=  jikoku + 'のバスは、' + unko + '。';
          }
        }
      }
      that.emit(':tellWithCard', speechOutput, SKILL_NAME, speechOutput);
    });
  },
  'AMAZON.HelpIntent': function () {
    var speechOutput = HELP_MESSAGE;
    var reprompt = HELP_REPROMPT;
    this.emit(':ask', speechOutput, reprompt);
  },
  'AMAZON.CancelIntent': function () {
    this.emit(':tell', STOP_MESSAGE);
  },
  'AMAZON.StopIntent': function () {
    this.emit(':tell', STOP_MESSAGE);
  }
};

function getBusInfo(callback) {
  const BUSAPI = {
    host: 'dokobus.info',
    path: '/search.php?depStr=%E6%98%8E%E7%9F%B3%E5%8D%97%E4%BA%8C%E4%B8%81%E7%9B%AE&arrStr=%E6%B3%89%E4%B8%AD%E5%A4%AE%E9%A7%85&depKey=668&arrKey=224&_=1514763441462',
    medhot: 'GET'
  };
  var req = require('http').request(BUSAPI, function(res) {
    res.setEncoding('utf8');
    var data = '';
    res.on('data', function(chunk) { data += chunk; });
    res.on('end', function() {
      var json = JSON.parse(data);
      callback(json['sekins']);
    });
  }).on('error', function(e) { callback([]); }).end();
}