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// Exercises and noodling from JS.info Array Methods
// https://javascript.info/array-methods
// reduce() - calculate a single value based on an array
// map() - iterate and return data for each element
const comments = [
  { text: 'Love this!', id: 523423 },
  { text: 'Super good', id: 823423 },
  { text: 'You are the best', id: 2039842 },
  { text: 'Ramen is my fav food ever', id: 123523 },
  { text: 'Nice Nice Nice!', id: 542328 }

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// https://www.theodinproject.com/lessons/foundations-fundamentals-part-5#assignment

// Calculator bits and pieces
// 1. The calculator functions
const add = (a, b) => a += b; 
const subtract = (a, b) => a -= b;
const multiply = (a, b) => a *= b;
const divide = (a, b) => a /= b;
function operate(operator, num1, num2) { // still needs the operators
  if (operator === '+') {

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// MDN Example - Check Inventory (nested returns) 
// See below link for converting any value to boolean
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some
const fruit = ['kiwi', 'apple', 'banana', 'avocado'];
// Check inventory for 'pineapple' and then 'apple'
/* 
  Need to pass 'arr' and 'item' param.
  If 'fruit' arg STRICTLY equals 'item' param, 
    some should return 'true'.

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/*
  Objects and Computed Property Names; Property Accessors
  
  https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Object_initializer#computed_property_names
  https://www.freecodecamp.org/news/reduce-f47a7da511a9/
  
  => Beware of using square brackets to access properties whose names are given by EXTERNAL INPUT.
     This may make your code susceptible to object injection attacks.
     https://github.com/nodesecurity/eslint-plugin-security/blob/main/docs/the-dangers-of-square-bracket-notation.md#the-dangers-of-square-bracket-notation
*/

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// https://bholmes.dev/blog/another-way-to-understand-array-reduce/
// Return all the music descriptions containing 90 words or more using forEach.
// Then do the same thing w the reduce() method.
const musicData = [
  {
    name: 'Radiohead',
    albums: [
      {
        title: 'The King of Limbs',
        songs: [

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// https://dmitripavlutin.com/gentle-explanation-of-this-in-javascript/
// https://www.youtube.com/watch?v=zE9iro4r918
// https://stackoverflow.com/questions/13441307/how-does-the-this-keyword-in-javascript-act-within-an-object-literal
var foo = {
  bar: function () {
    console.log('this.baz', this.baz, 'is typeof', typeof this.baz)
    return this.baz;
  },
  baz: 1,
};

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/* Manipulating strings */

// Convert string to array + uncommon unicode char strings
// https://dev.to/sanchithasr/6-ways-to-convert-a-string-to-an-array-in-javascript-1cjg
const exampleString = 'A car, a man, a maraca.'.toLowerCase().split('');
const lastItem = exampleString.length - 1;
// if (exampleString[lastItem] === '.') delete exampleString[lastItem];
console.log(exampleString)
exampleString.forEach((el) => {
  if (el.includes(',') || el.includes(' ') || el.includes('.')) return;

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// @toby's Higher Order Functions 
// @Chris: a higher order function is a function that either takes another function as a parameter, or returns a new function

const multiply = (first) => // pass in 1st param
  (second) => first * second; // return H.O. function which waits for 2nd param
const triple = multiply(3); // map() callback func

console.log('multiply', multiply(2, 2), triple(2, 100)) 
console.log('triple function', typeof triple, [2, 4, 6, 8].map(triple)); // returns factors or multiples of 3?

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// Fisher-Yates Shuffle sort fron javascript.info
// https://javascript.info/array-methods#shuffle-an-array

function shuffle(array) {
  // loop 2x array backwards switching 2 rando indexes e.g. [2, 1, 3]
  for (let i = array.length - 1; i > 0; i--) {
    // set j to a rounded rando num * (index + 1) // either 1, 2, or 3
    let j = Math.floor(Math.random() * (i + 1));
    // switches array item order, e.g., [1, 2] becomes [2, 1]
    [array[i], array[j]] = [array[j], array[i]]; // [num, num]

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// https://dmitripavlutin.com/javascript-object-destructuring/
// ## Array Cardio Day 2
// https://github.com/wesbos/JavaScript30/blob/master/07%20-%20Array%20Cardio%20Day%202/index-START.html
const people = [
  { name: 'Wes', year: 1988 },
  { name: 'Kait', year: 1986 },
  { name: 'Irv', year: 1970 },
  { name: 'Lux', year: 2015 }
];