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const fs = require('fs');

// Change this line to your template
const templateFile = './example-template.json';
const cfn = JSON.parse(fs.readFileSync(templateFile));
const resources = cfn.Resources;
const keys = Object.keys(resources);

let obj = {};

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const colors1 = ['#111', '#222', '#333'];
const colors2 = ['#444', '#555', '#666'];

const colorChoice = (n) => {
  return n[Math.floor(Math.random() * n.length)];
};

colorChoice(colors1);
// Returns one of: ['#111', '#222', '#333']

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const colors1 = ['#111', '#222', '#333'];
const colors2 = ['#444', '#555', '#666'];

const colorChoice = (colors) => {
  return colors[Math.floor(Math.random() * colors.length)];
};

colorChoice(colors1);
// Returns one of: ['#111', '#222', '#333']

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// Set up a promise
const promise = new Promise((resolve, reject) => {
  const number = Math.floor(Math.random() * 2);
  setTimeout(() => {
    if (number > 0) {
      resolve('Success!');
    } else {
      reject('Failure!!!');
    }
  }, 2000);

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// Say you have an array of "items" that you want to iterate over...
const someArray = [
  {
    name: 'A',
    number: 1
  },
  {
    name: 'B',
    number: 2
  },

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// Set up the function, using the spread operator to structure arguments
var removeFromArray = function(...args) {
  // Define the array as the first argument
  const array = args[0]
  // Returns a new array that does not contain any of [args]
  return array.filter(val => !args.includes(val))
}

// So for the following array:
var someArray = [1, 2, 3, 4, 5]

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// "normal" way of writing (uses an anonymous function)
words.filter(function(word) {
  return word.length < 6;
});

// arrow function (uses an anonymous function)
words.filter(word => word.length < 6);

// but you don't have to use an anonymous function...
// filter takes a function as an argument, and you can define that separately

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  }).catch((e) => {
    // Some basic error handling
    if (e.code === 'ENOTFOUND') {
      callback('Unable to connect to API servers');
    }
    else {
      callback(e.message);
    }
  });
};

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    SNS.publish(params, (err, data) => {
      if (err) {
        console.log(err.stack);
        callback(err);
      }
      callback(null, data);
    })

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    // Construct a format for the message - since we're using SNS, the maximum length will be 140 chars
    const message = `Tomorrow's weather: \nHi: ${high}\xB0\nLo: ${low}\xB0\nRain: ${precip}%\n\n${summary}`;

    // Create an object to define how we'll invoke our call to SNS
    const params = {
      Message: message,
      TopicArn: TOPIC
    }