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const twilio = require('twilio');

const TAG = 'smsUtility';

/**
 * Send an SMS text message.
 *
 * Example response from Twilio:
 * {
 *   "account_sid": "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",

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const sgMail = require('@sendgrid/mail');

sgMail.setTimeout(40000);

const TAG = 'emailUtility';
const DEFAULT_SENDER = 'donotreply@somedomain.com';

/**
 * Send an email.
 *

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const groupBy = (arr, groupFn) => {
  const grouped = {};
  for (const obj of arr) {
    const groupName = groupFn(obj);
    if (!grouped[groupName]) {
      grouped[groupName] = [];
    }
    grouped[groupName].push(obj);
  }
  return grouped;

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/* The old way:
const reverseString = (str) => {
  let reversed = '';
  for (let i = str.length - 1; i >= 0; i--) {
    const ch = str[i];
    reversed += ch;
  }
  return reversed;
};
const reverse = reverseString('javascript');

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const areEqual = (arr1, arr2) =>
  arr1.sort().join(',') === arr2.sort().join(',');
const arr1 = [1, 2, 3, 4];
const arr2 = [3, 4, 1, 2];
const arr3 = [1, 2, 3];
console.log(areEqual(arr1, arr2)); // true
console.log(areEqual(arr1, arr3)); // false

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const removeDuplicates = (arr) => [...new Set(arr)];
const arr = [1, 2, 3, 4, 5, 3, 1, 2, 5];
const distinct = removeDuplicates(arr);
console.log(distinct); // [1, 2, 3, 4, 5]

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const mapToJson = (map) => JSON.stringify(Object.fromEntries(map));
const map = new Map([
  ['user1', 'Alison'],
  ['user2', 'Kevin'],
  ['user3', 'James'],
]);
const json = mapToJson(map);
// {"user1":"Alison","user2":"Kevin","user3":"James"}
console.log(json);

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const jsonToMap = (json) => new Map(Object.entries(JSON.parse(json)));
const json = '{"user1":"Alison","user2":"Kevin","user3":"James"}';
const map = jsonToMap(json);
// Kevin
console.log(map.get('user2'));
// Map(3) { 'user1' => 'Alison', 'user2' => 'Kevin', 'user3' => 'James' }
console.log(map);

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const snakeToCamelCase = (s) =>
  s.toLowerCase().replace(/(_\w)/g, (w) => w.toUpperCase().substr(1));
const str1 = 'string_manipulation';
const str2 = 'one_liner';
console.log(snakeToCamelCase(str1)); // stringManipulation
console.log(snakeToCamelCase(str2)); // oneLiner

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/* This can be done by the uuid package, which is probably better than using Math.random(), but this is great for unit tests. */
const generateRandomUUID = (a) =>
  a
    ? (a ^ ((Math.random() * 16) >> (a / 4))).toString(16)
    : ([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(
        /[018]/g,
        generateRandomUUID
      );
console.log(generateRandomUUID()); // f138f635-acbd-4f78-9be5-ca3198c4cf34
console.log(generateRandomUUID()); // 8935bb0d-6503-441f-bb25-7bc685b5b5bc