index.js

/*****************************************************************************
 * Challenge 2: Review the provided code. The provided code includes:
 * -> Statements that import data from games.js
 * -> A function that deletes all child elements from a parent element in the DOM
*/

// import the JSON data about the crowd funded games from the games.js file
import GAMES_DATA from './games.js';

// create a list of objects to store the data about the games using JSON.parse
const GAMES_JSON = JSON.parse(GAMES_DATA)

// remove all child elements from a parent element in the DOM
function deleteChildElements(parent) {
    while (parent.firstChild) {
        parent.removeChild(parent.firstChild);
    }
}

/*****************************************************************************
 * Challenge 3: Add data about each game as a card to the games-container
 * Skills used: DOM manipulation, for loops, template literals, functions
*/

// grab the element with the id games-container
const gamesContainer = document.getElementById("games-container");

// create a function that adds all data from the games array to the page
function addGamesToPage(games) {

    // loop over each item in the data
    games.forEach((game) => {


        // create a new div element, which will become the game card
        
            const gameCard = document.createElement('div');
            


        // add the class game-card to the list
            gameCard.classList.add('game-card');


        // set the inner HTML using a template literal to display some info 
        // about each game
            gameCard.innerHTML = `
                <img src="${game.img}" alt="${game.name}" class = "game-img" />
                <h2>${game.name}</h2>
                <p>${game.description}</p>
                <p>Pledged: $${game.pledged}</p>
                <p>Goal: $${game.goal}</p>
                <p>Backers: ${game.backers}</p>
                
                `;
        // TIP: if your images are not displaying, make sure there is space
        // between the end of the src attribute and the end of the tag ("/>")


        // append the game to the games-container
        gamesContainer.appendChild(gameCard);
    });

}

// call the function we just defined using the correct variable
// later, we'll call this function using a different list of games
addGamesToPage(GAMES_JSON);


/*************************************************************************************
 * Challenge 4: Create the summary statistics at the top of the page displaying the
 * total number of contributions, amount donated, and number of games on the site.
 * Skills used: arrow functions, reduce, template literals
*/

// grab the contributions card element
const contributionsCard = document.getElementById("num-contributions");

// use reduce() to count the number of total contributions by summing the backers
const totalContributions = GAMES_JSON.reduce((accumulator, game) => {
    return accumulator + game.backers;
  }, 0);


// set the inner HTML using a template literal and toLocaleString to get a number with commas
contributionsCard.innerHTML = `${totalContributions.toLocaleString()}`;


// grab the amount raised card, then use reduce() to find the total amount raised
const raisedCard = document.getElementById("total-raised");

const totalRaised = GAMES_JSON.reduce((accumulator, game) => {
    return accumulator + game.pledged;
  }, 0);

// set inner HTML using template literal
raisedCard.innerHTML = `$${totalRaised.toLocaleString()}`;


// grab number of games card and set its inner HTML
const gamesCard = document.getElementById("num-games");

const totalGames = GAMES_JSON.length;
gamesCard.innerHTML = `${totalGames}`;


/*************************************************************************************
 * Challenge 5: Add functions to filter the funded and unfunded games
 * total number of contributions, amount donated, and number of games on the site.
 * Skills used: functions, filter
*/

// show only games that do not yet have enough funding
function filterUnfundedOnly() {

    deleteChildElements(gamesContainer);

    // use filter() to get a list of games that have not yet met their goal

    const unfundedGames = GAMES_JSON.filter(game => game.pledged < game.goal);


    // use the function we previously created to add the unfunded games to the DOM
    addGamesToPage(unfundedGames, gamesContainer);

}


// show only games that are fully funded
function filterFundedOnly() {
    deleteChildElements(gamesContainer);

    // use filter() to get a list of games that have met or exceeded their goal
    const fundedGames = GAMES_JSON.filter(game => game.pledged >= game.goal);


    // use the function we previously created to add funded games to the DOM
    addGamesToPage(fundedGames, gamesContainer);

}

// show all games
function showAllGames() {

    deleteChildElements(gamesContainer);

    // add all games from the JSON data to the DOM
    addGamesToPage(GAMES_JSON, gamesContainer);

}

// select each button in the "Our Games" section
const unfundedBtn = document.getElementById("unfunded-btn");
const fundedBtn = document.getElementById("funded-btn");
const allBtn = document.getElementById("all-btn");

// add event listeners with the correct functions to each button

if (unfundedBtn) {
    unfundedBtn.addEventListener("click", filterUnfundedOnly);
}

if (fundedBtn) {
    fundedBtn.addEventListener("click", filterFundedOnly);
}

if (allBtn) {
    allBtn.addEventListener("click", showAllGames);
}


/*************************************************************************************
 * Challenge 6: Add more information at the top of the page about the company.
 * Skills used: template literals, ternary operator
*/

// grab the description container
const descriptionContainer = document.getElementById("description-container");

// use filter or reduce to count the number of unfunded games
const unfundedGames = GAMES_JSON.filter(game => game.pledged < game.goal);
const numberOfUnfundedGames = unfundedGames.length;


// create a string that explains the number of unfunded games using the ternary operator
const summaryMessage = `
  A total of $${totalRaised.toLocaleString()} has been raised for ${totalGames} games.
  ${numberOfUnfundedGames > 0
    ? `Currently, ${numberOfUnfundedGames} game${numberOfUnfundedGames !== 1 ? 's' : ''} remain${numberOfUnfundedGames !== 1 ? '' : 's'} unfunded. We need your help to fund these amazing games!`
    : 'All games are fully funded!'}
`;


// create a new DOM element containing the template string and append it to the description container
const summaryParagraph = document.createElement('p');

summaryParagraph.innerHTML = summaryMessage;

descriptionContainer.appendChild(summaryParagraph);

/************************************************************************************
 * Challenge 7: Select & display the top 2 games
 * Skills used: spread operator, destructuring, template literals, sort 
 */

const firstGameContainer = document.getElementById("first-game");
const secondGameContainer = document.getElementById("second-game");

const sortedGames =  GAMES_JSON.sort( (item1, item2) => {
    return item2.pledged - item1.pledged;
});

// use destructuring and the spread operator to grab the first and second games
const [topGame, secondTopGame, ...otherGames] = sortedGames;

// create a new element to hold the name of the top pledge game, then append it to the correct element
if (topGame) {
    const topGameName = document.createTextNode(topGame.name);
    firstGameContainer.appendChild(topGameName);
}

// do the same for the runner up item
if (secondTopGame) {
    const secondTopGameName = document.createTextNode(secondTopGame.name);
    secondGameContainer.appendChild(secondTopGameName);
}