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Solution: Marc Solà Ramos #4

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Solution: Marc Solà Ramos #4

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232 changes: 80 additions & 152 deletions src/App.js
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Original file line number Diff line number Diff line change
@@ -1,32 +1,25 @@
import React, { Component } from "react";
import React, { useState, useEffect } from "react";
import { BrowserRouter, Route } from "react-router-dom";

import Home from "./pages/Home";
import NewProduct from "./pages/NewProduct";

import * as api from "./api";

const LOCAL_STORAGE_KEY = "react-sc-state";

function loadLocalStorageData() {
const prevItems = localStorage.getItem(LOCAL_STORAGE_KEY);

if (!prevItems) {
return null;
}

try {
return JSON.parse(prevItems);
} catch (error) {
return null;
}
}

function buildNewCartItem(cartItem) {
if (cartItem.quantity >= cartItem.unitsInStock) {
return cartItem;
}

return {
id: cartItem.id,
title: cartItem.title,
Expand All @@ -38,121 +31,83 @@ function buildNewCartItem(cartItem) {
quantity: cartItem.quantity + 1,
};
}

class App extends Component {
constructor(props) {
super(props);

this.state = {
products: [],
cartItems: [],
isLoading: false,
hasError: false,
loadingError: null,
};

this.handleAddToCart = this.handleAddToCart.bind(this);
this.handleRemove = this.handleRemove.bind(this);
this.handleChange = this.handleChange.bind(this);
this.handleDownVote = this.handleDownVote.bind(this);
this.handleUpVote = this.handleUpVote.bind(this);
this.handleSetFavorite = this.handleSetFavorite.bind(this);
this.saveNewProduct = this.saveNewProduct.bind(this);
}

componentDidMount() {
const prevItems = loadLocalStorageData();

if (!prevItems) {
this.setState({
isLoading: true,
});

api.getProducts().then((data) => {
this.setState({
products: data,
isLoading: false,
});
});
return;
function App() {
const [products, setProducts] = useState([]);
const [cartItems, setCartItems] = useState([]);
const [isLoading, setIsLoading] = useState(false);
const [hasError, setHasError] = useState(false);
const [loadingError, setLoadingError] = useState(null);

useEffect(() => {
async function loadData() {
const prevItems = loadLocalStorageData();
if (!prevItems) {
setIsLoading(true);
try {
const productResponse = await api.getProducts();
if (productResponse.data) {
setProducts(productResponse.data);
setIsLoading(false);
}
} catch (error) {
setHasError(true);
setIsLoading(false);
setLoadingError("Error");
}
} else {
setProducts(prevItems.products);
}
setCartItems(prevItems.cartItems);
}
loadData();
}, []);

this.setState({
cartItems: prevItems.cartItems,
products: prevItems.products,
});
}

componentDidUpdate() {
const { cartItems, products } = this.state;

useEffect(() => {
localStorage.setItem(
LOCAL_STORAGE_KEY,
JSON.stringify({ cartItems, products }),
);
}

handleAddToCart(productId) {
const { cartItems, products } = this.state;
}, [cartItems, products]);

function handleAddToCart(productId) {
const prevCartItem = cartItems.find((item) => item.id === productId);
const foundProduct = products.find((product) => product.id === productId);

if (prevCartItem) {
const updatedCartItems = cartItems.map((item) => {
if (item.id !== productId) {
return item;
}

if (item.quantity >= item.unitsInStock) {
return item;
}

return {
...item,
quantity: item.quantity + 1,
};
});

this.setState({ cartItems: updatedCartItems });
setCartItems(updatedCartItems);
return;
}

const updatedProduct = buildNewCartItem(foundProduct);
this.setState((prevState) => ({
cartItems: [...prevState.cartItems, updatedProduct],
}));
setCartItems([...cartItems, updatedProduct]);
}

handleChange(event, productId) {
const { cartItems } = this.state;

function handleChange(event, productId) {
const updatedCartItems = cartItems.map((item) => {
if (item.id === productId && item.quantity <= item.unitsInStock) {
return {
...item,
quantity: Number(event.target.value),
};
}

return item;
});

this.setState({ cartItems: updatedCartItems });
setCartItems(updatedCartItems);
}

handleRemove(productId) {
const { cartItems } = this.state;
function handleRemove(productId) {
const updatedCartItems = cartItems.filter((item) => item.id !== productId);

this.setState({
cartItems: updatedCartItems,
});
setCartItems(updatedCartItems);
}

handleDownVote(productId) {
const { products } = this.state;

function handleDownVote(productId) {
const updatedProducts = products.map((product) => {
if (
product.id === productId &&
Expand All @@ -170,16 +125,11 @@ class App extends Component {
},
};
}

return product;
});

this.setState({ products: updatedProducts });
setProducts(updatedProducts);
}

handleUpVote(productId) {
const { products } = this.state;

function handleUpVote(productId) {
const updatedProducts = products.map((product) => {
if (
product.id === productId &&
Expand All @@ -196,79 +146,57 @@ class App extends Component {
},
};
}

return product;
});

this.setState({ products: updatedProducts });
setProducts(updatedProducts);
}

handleSetFavorite(productId) {
const { products } = this.state;

function handleSetFavorite(productId) {
const updatedProducts = products.map((product) => {
if (product.id === productId) {
return {
...product,
isFavorite: !product.isFavorite,
};
}

return product;
});

this.setState({ products: updatedProducts });
setProducts(updatedProducts);
}

saveNewProduct(newProduct) {
this.setState((prevState) => ({
products: [newProduct, ...prevState.products],
newProductFormOpen: !prevState.newProductFormOpen,
}));
}

render() {
const {
cartItems,
products,
isLoading,
hasError,
loadingError,
} = this.state;

return (
<BrowserRouter>
<Route
path="/"
exact
render={(routeProps) => (
<Home
{...routeProps}
fullWidth
cartItems={cartItems}
products={products}
isLoading={isLoading}
hasError={hasError}
loadingError={loadingError}
handleDownVote={this.handleDownVote}
handleUpVote={this.handleUpVote}
handleSetFavorite={this.handleSetFavorite}
handleAddToCart={this.handleAddToCart}
handleRemove={this.handleRemove}
handleChange={this.handleChange}
/>
)}
/>
<Route
path="/new-product"
exact
render={(routeProps) => (
<NewProduct {...routeProps} saveNewProduct={this.saveNewProduct} />
)}
/>
</BrowserRouter>
);
function saveNewProduct(newProduct) {
setProducts((prevProducts) => [...prevProducts, newProduct]);
// newProductFormOpen: !prevState.newProductFormOpen
}
return (
<BrowserRouter>
<Route
path="/"
exact
render={(routeProps) => (
<Home
{...routeProps}
fullWidth
cartItems={cartItems}
products={products}
isLoading={isLoading}
hasError={hasError}
loadingError={loadingError}
handleDownVote={handleDownVote}
handleUpVote={handleUpVote}
handleSetFavorite={handleSetFavorite}
handleAddToCart={handleAddToCart}
handleRemove={handleRemove}
handleChange={handleChange}
/>
)}
/>
<Route
path="/new-product"
exact
render={(routeProps) => (
<NewProduct {...routeProps} saveNewProduct={saveNewProduct} />
)}
/>
</BrowserRouter>
);
}

export default App;
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