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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Advanced Collection Methods</title>
</head>
<body>

<h1>Hello - how about some advanced collection methods?</h1>

<script>
    let ourPets = [
        {
            species: "Cat",
            name: "Sassy",
            primaryColor: "gray",
            age: 5,
            knowsTricks: false
        },
        {
            species: "Dog",
            name: "Lindsey",
            primaryColor: "yellow",
            age: 5,
            knowsTricks: true
        },
        {
            species: "Dog",
            name: "Luna",
            primaryColor: "gray",
            age: 1,
            knowsTricks: true
        },
        {
            species: "Cat",
            name: "Cali",
            primaryColor: "gray,brown,white",
            age: 5,
            knowsTricks: false
        },
        {
            species: "Bird",
            name: "Tobi",
            primaryColor: "green,black",
            age: 1.5,
            knowsTricks: true
        },
        {
            species: "Cat",
            name: "Pinch 'o Pepper",
            primaryColor: "Black",
            age: 2,
            knowsTricks: true
        }
    ]

    //        .filter()
    // Let's get cats only!
    let catsOnlyArray = ourPets.filter((pet) =>{
        return pet.species === "Cat";
    })

    console.log(catsOnlyArray);

    let alligatorOnlyArray = ourPets.filter((pet) =>{
        return pet.species === "Alligator";
    })

    console.log(alligatorOnlyArray);
    //How can we get ages less than five?
    let petsUnderFive = ourPets.filter((pet) => {
        return pet.age < 5;
    })

    console.log(petsUnderFive);

    //    .map()
    //Let's get an array of the cat ages with the human years math done! Some sources say multiplying by seven will get us the human age

    let catsHumanAge = catsOnlyArray.map((cat) => {
        return `${cat.name} is ${(cat.age * 7)} years old`;
    })

    console.log(catsHumanAge);

    //        .reduce()
    // Can we use .reduce() to quickly sum up our pet's ages?

    let totalPetAge = ourPets.reduce((total, pet) => {
        return total + pet.age;
    }, 0)

    console.log(`Our pet's combined age is ${totalPetAge}`);

    let arrayNums = [12, 16, 7, 2, 22];

    console.log(arrayNums);
    let favoriteNumberTotal = arrayNums.reduce((accumulator, currentValue, index) => {
        const returns = accumulator + currentValue;
        console.log(
            `accumulator: ${accumulator}, currentValue: ${currentValue}, index: ${index}, returns: ${returns}`,
        );
        return returns;
    }, 24);

    console.log(favoriteNumberTotal);

    let mappedAges = ourPets.map((pet) => pet.age);

    let combinedAges = mappedAges.reduce((accumulator, age) => accumulator += age);

    console.log(`William's solution should work: Here's our combined pet ages by using map and reduce: ${combinedAges}`);


    let aStringOfNames = ourPets.reduce((accumulator, pet) => {
        return accumulator + pet.name + ", ";
    }, "sorry reduce is weird :(");

    console.log(aStringOfNames);
    // Bonus:
    // .some()

    console.log(`Do any of us own an alligator?`);

    let ownsAlligator = ourPets.some((pet) => pet.species.toLowerCase() === "alligator");
    console.log(`It is ${ownsAlligator} that one of us owns an alligator`);

    console.log(`Do any of us own a cat?`);

    let ownsCat = ourPets.some((pet) => pet.species.toLowerCase() === "cat");
    console.log(`It is ${ownsCat} that one of us owns a cat`);

    console.log(`Do any of us own a pet named 'Gilly'?`);

    let ownsGilly = ourPets.some((pet) => pet.name.toLowerCase() === "gilly");

    console.log(`It is ${ownsGilly} that one of us owns a pet named Gilly`);

    console.log(`Do any of us own a pet named 'Sassy'`);

    let ownsSassy = ourPets.some((pet) => pet.name.toLowerCase() === "sassy");

    console.log(`It is ${ownsSassy} that one of us owns a pet named Sassy`);


    //.find()
    //Let's find a pet - where's my cat, Pinch?!

    let pinchTheCat = ourPets.find((pet) => pet.name === "Pinch 'o Pepper");

    console.log(`Did we find Pinch?`);
    console.log( ` %c／l、
（ﾟ､ ｡７ <<(mrow)
 l、ﾞ~ヽ
 じしf_,)ノ `, "color:#404040");

    console.log(pinchTheCat);

    let firstCatInArray = ourPets.find((pet) => pet.species.toLowerCase() === "cat");

    console.log(firstCatInArray);

//     Mary has a little lamb

    function countWords(sentence) {
        const words = sentence.split(' '); // transform a sentence into an array of words
        const wordCountObject = words.reduce((wordCounts, word, index) => {
            if (typeof wordCounts[word] === 'undefined') {
                // if the word is not yet present in our object, set it's value to 1
                wordCounts[word] = 1;
            } else {
                // otherwise increment the existing count
                wordCounts[word] += 1;
            }

            console.log(wordCounts);
            console.log(`currentValue: ${word}, index: ${index}`);
            return wordCounts;
        }, {}); // start with an empty object
        return wordCountObject;
    }

    countWords('Mary had a little lamb little lamb little lamb');
    // {Mary: 1, had: 1, a: 1, little: 3, lamb: 3}

</script>

</body>
</html>