Add skill

index.js

'use strict';
const Voxa = require('voxa');
const _ = require('lodash');

const views = {
    Hello: {
        ask: 'Hello! Welcome to the Add skill, what is the first number?',
    },
    waitingForInput: {
        ask: 'Do you have other number to add?'
    },
    SumIntent: {
        tell: 'Your result is {result}'
    }
};

const variables = {
    result: function(model) {
        return model.result;
    },
}

const skill = new Voxa({ views, variables });

skill.onIntent('LaunchIntent', function(event) {
    return { reply: 'Hello', to: 'waitingForInput' };
});

skill.onState('waitingForInput', function(event) {
    if (!event.model.values) { event.model.values = [] }

    if (event.intent.name === 'SumIntent') {
        event.model.values.push(parseInt(event.intent.params.number));
        return { reply: 'waitingForInput', to: 'waitingForInput' };
    }

    if (event.intent.name === 'AMAZON.NoIntent') {
        event.model.result = _.sum(event.model.values);
        return { reply: 'SumIntent' };
    }
})

exports.handler = skill.startServer(3000);

InteractionModel.json

{
  "intents": [
    {
      "intent": "LaunchIntent"
    },
    {
      "intent": "AMAZON.NoIntent"
    },
    {
      "intent": "SumIntent",
      "slots": [
        {
          "name": "number",
          "type": "AMAZON.NUMBER"
        }
      ]
    }
  ]
}

package.json

{
  "name": "alexa-sample",
  "version": "1.0.0",
  "description": "Un ejemplo de Alexa",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "Andres Reyes Monge <andresm@rain.agency>",
  "license": "ISC",
  "dependencies": {
    "lodash": "^4.17.4",
    "voxa": "^2.1.0"
  }
}

SampleUtterrances.txt

SumIntent my number is {number}
SumIntent {number}