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Primeira publicação projeto shopping-cart
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‎trybe-projetos/shopping-cart/helpers/fetchItem.js‎

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const fetchItem = async (itemID) => {
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const url = `https://api.mercadolibre.com/items/${itemID}`;
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try {
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const response = await fetch(url);
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const data = await response.json();
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return data;
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} catch (erro) {
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throw new Error('You must provide an url');
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}
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};
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if (typeof module !== 'undefined') {
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module.exports = {
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fetchItem,
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};
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}

‎trybe-projetos/shopping-cart/helpers/fetchProducts.js‎

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const fetchProducts = async (query) => {
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const url = `https://api.mercadolibre.com/sites/MLB/search?q=${query}`;
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try {
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const responseUrl = await fetch(url);
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const data = await responseUrl.json();
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return data;
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} catch (erro) {
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throw new Error('You must provide an url');
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}
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};
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if (typeof module !== 'undefined') {
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module.exports = {
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fetchProducts,
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};
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}

‎trybe-projetos/shopping-cart/helpers/getSavedCartItems.js‎

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const getSavedCartItems = (cartItem) => localStorage.getItem(cartItem);
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if (typeof module !== 'undefined') {
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module.exports = getSavedCartItems;
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}

‎trybe-projetos/shopping-cart/helpers/saveCartItems.js‎

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const saveCartItems = (item) => {
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localStorage.setItem('cartItems', item);
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};
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if (typeof module !== 'undefined') {
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module.exports = saveCartItems;
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}

‎trybe-projetos/shopping-cart/index.html‎

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<!DOCTYPE html>
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<html lang="pt-BR">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<meta http-equiv="X-UA-Compatible" content="ie=edge" />
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<title>TrybeShopping</title>
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<link rel="stylesheet" href="style.css" />
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<link rel="preconnect" href="https://fonts.googleapis.com">
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<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
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<link href="https://fonts.googleapis.com/css2?family=Epilogue:wght@400;700&display=swap" rel="stylesheet">
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<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
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<script src="./helpers/fetchItem.js" defer></script>
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<script src="./helpers/fetchProducts.js" defer></script>
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<script src="./helpers/saveCartItems.js" defer></script>
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<script src="./helpers/getSavedCartItems.js" defer></script>
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<script src="script.js" defer></script>
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<script src="https://kit.fontawesome.com/c14177f602.js" crossorigin="anonymous"></script>
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</head>
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<body>
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<header class="header">
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<div class="container-title">
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<span class="title"><strong>trybe</strong>shopping</span>
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<input class="search_input" type="text" placeholder="Buscar produtos, marcas e muito mais...">
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<i class="fa-brands fa-searchengin fa-xl"></i>
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</div>
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<i class="material-icons" style="font-size:45px;color:white">shopping_cart</i>
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<div class="container-cartTitle">
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<span class="cart__title">Meu carrinho</span>
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</div>
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</header>
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<section class="container">
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<section class="items"></section>
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<section class="cart">
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<ol class="cart__items"></ol>
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<button class="empty-cart">Esvaziar carrinho</button>
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</section>
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</section>
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</body>
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</html>

‎trybe-projetos/shopping-cart/script.js‎

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const round = (num, places) => {
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if (!(`${num}`).includes('e')) {
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return +(`${Math.round(`${num}e+${places}`)}e-${places}`);
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}
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const arr = (`${num}`).split('e');
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let sig = '';
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if (+arr[1] + places > 0) {
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sig = '+';
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}
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return +(`${Math.round(`${+arr[0]}e${sig}${+arr[1] + places}`)}e-${places}`);
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};
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// Creditos da função acima ao A Kunin, user:1736537 do stackoverflow, apenas modificada do original para as regras do linter e funcionamento na minha aplicação. Função utilizada para trabalhar com casas decimais de forma mais precisa possível.
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const createProductImageElement = (imageSource) => {
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const img = document.createElement('img');
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img.className = 'item__image';
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img.src = imageSource;
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return img;
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};
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const createCustomElement = (element, className, innerText) => {
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const e = document.createElement(element);
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e.className = className;
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e.innerText = innerText;
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return e;
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};
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const createProductItemElement = ({ sku, name, image }) => {
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const section = document.createElement('section');
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section.className = 'item';
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section.appendChild(createCustomElement('span', 'item__sku', sku));
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section.appendChild(createCustomElement('span', 'item__title', name));
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section.appendChild(createProductImageElement(image));
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section.appendChild(createCustomElement('button', 'item__add', 'Adicionar ao carrinho!'));
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return section;
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};
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const getSkuFromProductItem = (item) => item.querySelector('span.item__sku').innerText;
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const selectTotalPrice = () => {
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priceContainer = document.querySelector('.total-price');
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return priceContainer;
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};
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const subtractTotalCart = (event) => {
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const itemCartRemove = event.path[0];
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const priceCapture = itemCartRemove.innerText.split(' ').pop().split('$').pop();
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const priceConvertion = parseFloat(selectTotalPrice().innerText) - parseFloat(priceCapture);
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const priceRound = round(priceConvertion, 2);
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selectTotalPrice().innerText = priceRound;
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localStorage.setItem('total', priceRound);
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};
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const handleAllLocalStorage = (event) => {
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localStorage.removeItem('cartItems');
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subtractTotalCart(event);
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localStorage.removeItem('total');
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};
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const removeItemCart = (event) => {
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const itemCartRemove = event.path[0];
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const divRemove = itemCartRemove.parentNode;
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itemCartRemove.remove();
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divRemove.remove();
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if (getSavedCartItems('cartItems').split(',').length === 1) {
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return handleAllLocalStorage(event);
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}
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const idCapture = itemCartRemove.innerText.split(' ')[1];
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const ls = getSavedCartItems('cartItems').split(',');
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const newLs = ls.filter((element) => element !== idCapture);
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saveCartItems(newLs.toString());
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subtractTotalCart(event);
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};
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const cartItemClickListener = (event) => {
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removeItemCart(event);
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};
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const itemCartOver = (event) => {
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const divCartContainer = event.path[0];
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const remover = document.createElement('i');
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remover.className = 'fa-solid fa-trash-can';
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divCartContainer.appendChild(remover);
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}
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const removeItemCartOver = () => {
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const textRemover = document.querySelector('.fa-trash-can');
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textRemover.remove();
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}
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const createCartItemElement = ({ sku, name, salePrice, img }) => {
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const div = document.createElement('div');
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div.className = 'cart_item_container';
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const image = document.createElement('img');
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image.className = 'cart_item_img';
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image.setAttribute('src', img);
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const li = document.createElement('li');
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li.className = 'cart__item';
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li.innerText = `SKU: ${sku} | NAME: ${name} | PRICE: R$${salePrice}`;
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li.addEventListener('click', cartItemClickListener);
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div.appendChild(image);
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div.appendChild(li);
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div.addEventListener('mouseover', itemCartOver);
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div.addEventListener('mouseout', removeItemCartOver);
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return div;
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};
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const messageCallingApi = () => {
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const cartContainer = document.querySelector('.cart');
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const messageElement = document.createElement('h3');
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messageElement.className = 'loading';
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messageElement.innerText = 'carregando...';
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cartContainer.appendChild(messageElement);
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};
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const messageLoadPage = () => {
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const containerTitle = document.querySelector('.container-title')
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const messageElement = document.createElement('h3');
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messageElement.className = 'loading';
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messageElement.innerText = 'carregando...'
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containerTitle.appendChild(messageElement);
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}
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const removeMessageCallingApi = () => {
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const messageContainer = document.querySelector('.loading');
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messageContainer.remove();
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};
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const searchInput = document.querySelector('.search_input');
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const buttonSearch = document.querySelector('.fa-searchengin');
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const searchProducts = () => searchInput.value;
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const cleanPage = () => {
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const allItemsContainer = document.querySelectorAll('.item');
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allItemsContainer.forEach((e) => {
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e.remove();
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})
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};
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searchInput.addEventListener('keypress', function (event) {
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if (event.which === 13) {
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cleanPage();
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createIntensHtml(searchProducts());
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}
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});
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buttonSearch.addEventListener('click', function () {
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cleanPage();
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createIntensHtml(searchProducts());
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})
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buttonSearch.addEventListener('mouseover', function () {
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buttonSearch.classList.add('fa-beat');
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})
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buttonSearch.addEventListener('mouseout', function () {
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buttonSearch.classList.remove('fa-beat');
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})
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const createIntensHtml = async (product) => {
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messageLoadPage();
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const itemsContainer = document.querySelector('.items');
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const data = await fetchProducts(product);
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const { results } = data;
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await results.forEach(({ id, title, thumbnail }) => {
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const item = {
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sku: id,
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name: title,
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image: thumbnail,
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};
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itemsContainer.appendChild(createProductItemElement(item));
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});
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removeMessageCallingApi();
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};
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const defaultIntensHtml = async () => {
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messageLoadPage();
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const itemsContainer = document.querySelector('.items');
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const data = await fetchProducts('informática');
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const { results } = data;
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await results.forEach(({ id, title, thumbnail }) => {
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const item = {
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sku: id,
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name: title,
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image: thumbnail,
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};
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itemsContainer.appendChild(createProductItemElement(item));
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});
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removeMessageCallingApi();
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};
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const addItemCartHtml = async (itemID) => {
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const cartContainer = document.querySelector('.cart__items');
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const data = await fetchItem(itemID);
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const { id } = data;
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const { title } = data;
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const { price } = data;
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const { thumbnail } = data;
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const item = {
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sku: id,
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name: title,
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salePrice: price,
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img: thumbnail,
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};
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cartContainer.appendChild(createCartItemElement(item));
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};
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const addTotalCart = async (itemID) => {
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const data = await fetchItem(itemID);
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const { price } = data;
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const priceConvertion = parseFloat(selectTotalPrice().innerText) + price;
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const priceRound = round(priceConvertion, 2);
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selectTotalPrice().innerText = priceRound;
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localStorage.setItem('total', priceRound);
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};
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const loadTotalStorage = () => {
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const priceContainer = document.querySelector('.total-price');
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const currentStorage = () => {
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priceContainer.innerText = localStorage.getItem('total');
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};
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if ('total' in localStorage) {
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return currentStorage();
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}
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priceContainer.innerText = 0;
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};
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const createSumElement = () => {
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const divTotal = document.createElement('div');
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divTotal.className = 'div-total';
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const h3TitleTotal = document.createElement('h3');
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h3TitleTotal.className = 'title-total';
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h3TitleTotal.innerText = 'Total Carrinho: R$'
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const cartContainer = document.querySelector('.cart');
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const elementSum = document.createElement('h3');
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elementSum.className = 'total-price';
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divTotal.appendChild(h3TitleTotal);
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divTotal.appendChild(elementSum);
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cartContainer.appendChild(divTotal);
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loadTotalStorage();
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};
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const createItemCart = async (event) => {
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if (event.target.classList.contains('item__add')) {
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const idItem = getSkuFromProductItem(event.target.parentNode);
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messageCallingApi();
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await addItemCartHtml(idItem);
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await addTotalCart(idItem);
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removeMessageCallingApi();
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if ('cartItems' in localStorage) {
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return saveCartItems(`${getSavedCartItems('cartItems')},${idItem}`);
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}
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saveCartItems(idItem);
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}
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};
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const buttonItemAdd = document.querySelector('.container');
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buttonItemAdd.addEventListener('click', function async(e) {
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createItemCart(e);
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});
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const validSplit = () => {
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if ('cartItems' in localStorage) {
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return getSavedCartItems('cartItems').split(',').length;
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}
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return 0;
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};
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const handleLocalStorage = () => {
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if ('cartItems' in localStorage && validSplit() > 1) {
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const ls = getSavedCartItems('cartItems').split(',');
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return ls.forEach((element) => {
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addItemCartHtml(element);
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});
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} if (validSplit() === 1) {
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return addItemCartHtml(getSavedCartItems('cartItems'));
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}
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};
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const clearCart = () => {
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if ('cartItems' in localStorage) {
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localStorage.removeItem('cartItems');
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localStorage.removeItem('total');
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window.location.reload();
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}
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};
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const buttonClear = document.querySelector('.empty-cart');
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buttonClear.addEventListener('click', () => clearCart());
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window.onload = async () => {
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await defaultIntensHtml();
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await handleLocalStorage();
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await createSumElement();
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};

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