Create Shopping Cart

src/__tests__/Item.test.js

@@ -1,6 +1,8 @@
 import "@testing-library/jest-dom";
 import { render, screen, fireEvent } from "@testing-library/react";
 import Item from "../components/Item";
+import ShoppingList from "../components/ShoppingList";
+
 
 test("the <li> does not have a className when initialized", () => {
   const { container } = render(<Item name="Milk" category="Dairy" />);
@@ -9,7 +11,8 @@ test("the <li> does not have a className when initialized", () => {
 });
 
 test("the <li> has a className of 'in-cart' when the Add to Cart button is clicked", () => {
-  const { container } = render(<Item name="Milk" category="Dairy" />);
+  const items = [{ id: 4, name: "Milk", category: "Dairy" }]
+  const { container } = render(<ShoppingList items={items} />);
   fireEvent.click(screen.getByText(/ Cart/));
   expect(container.querySelector(".in-cart")).toBeInTheDocument();
 });

src/components/App.js

@@ -1,22 +1,19 @@
-import React from "react";
-import ShoppingList from "./ShoppingList";
-import itemData from "../data/items";
+import React, { useState } from "react"
+import ShoppingList from "./ShoppingList"
+import itemData from "../data/items"
+import Header from "./Header"
 
 function App() {
-
-  // replace 'false' with a state variable that can be toggled between true and false
-  // this will be used for the Dark Mode Toggle feature
-  const appClass = false ? "App dark" : "App light"
+  const [darkMode, setDarkMode] = useState(false)
+  const appClass = darkMode ? "App dark" : "App light"
+  const onDarkModeClick = () => setDarkMode(!darkMode)
 
   return (
     <div className={appClass}>
-      <header>
-        <h2>Shopster</h2>
-        <button>Dark Mode</button>
-      </header>
+      <Header onDarkModeClick={onDarkModeClick} darkMode={darkMode}/>
       <ShoppingList items={itemData} />
     </div>
   );
 }
 
-export default App;
+export default App

src/components/Filter.js

@@ -0,0 +1,16 @@
+import React from "react";
+
+function Filter({ filterCart }) {
+  return (
+    <div className="Filter">
+      <select name="filter" onChange={filterCart}>
+        <option value="All">Filter by category</option>
+        <option value="Produce">Produce</option>
+        <option value="Dairy">Dairy</option>
+        <option value="Dessert">Dessert</option>
+      </select>
+    </div>
+  )
+}
+
+export default Filter

src/components/Header.js

@@ -0,0 +1,12 @@
+import React from "react";
+
+function Header({ onDarkModeClick, darkMode }) {
+  return (
+    <header>
+      <h2>Shopster</h2>
+      <button onClick={onDarkModeClick}>{darkMode === true ? "Dark Mode" : "Light Mode"}</button>
+    </header>
+  );
+}
+
+export default Header;

src/components/Item.js

@@ -1,13 +1,13 @@
 import React from "react";
 
-function Item({ name, category }) {
+function Item({ name, category, addItemFun, cartClass = "" }) {
   return (
-    <li className="">
+    <li className={cartClass}>
       <span>{name}</span>
       <span className="category">{category}</span>
-      <button className="add">Add to Cart</button>
+      <button className="add" onClick={addItemFun}>{cartClass === "" ? "Add to Cart" : "Remove From Cart"}</button>
     </li>
-  );
+  )
 }
 
 export default Item;

src/components/ShoppingList.js

@@ -1,24 +1,72 @@
-import React from "react";
+import React, { useState } from "react";
 import Item from "./Item";
+import Filter from "./Filter";
 
 function ShoppingList({ items }) {
+  const [cart, setCart] = useState(items)
+
+  const updateCart = (e) => {
+    const action = e.target.innerHTML
+    console.log('Func ran', e.target.innerHTML)
+    if(action === 'Add to Cart'){
+      addToCart(e)
+    } else {
+      removeFromCart(e)
+    }
+  }
+
+  const addToCart = (e) => {
+    const itemName = e.target.parentElement.childNodes[0].textContent
+    const updatedCart = cart.map(item => {
+      if(item.name === itemName){
+        return {
+          ...item,
+        cartClass: "in-cart"
+        }
+      } else {
+        return item
+      }
+    })
+    setCart(updatedCart)
+  }
+
+  const removeFromCart = (e) => {
+    const itemName = e.target.parentElement.childNodes[0].textContent
+    const updatedCart = cart.map(item => {
+      if(item.name === itemName){
+        return {
+          ...item,
+        cartClass: ""
+        }
+      } else {
+        return item
+      }
+    })
+    setCart(updatedCart)
+  }
+
+  const handleFilter = (e) => {
+    const category = e.target.value
+    const filteredItems = items.filter(item => item.category === category)
+    setCart(filteredItems)
+  }  
+
   return (
     <div className="ShoppingList">
-      <div className="Filter">
-        <select name="filter">
-          <option value="All">Filter by category</option>
-          <option value="Produce">Produce</option>
-          <option value="Dairy">Dairy</option>
-          <option value="Dessert">Dessert</option>
-        </select>
-      </div>
+      <Filter filterCart={handleFilter}/>
       <ul className="Items">
-        {items.map((item) => (
-          <Item key={item.id} name={item.name} category={item.category} />
+        {cart.map((item) => (
+          <Item 
+            cartClass={item.cartClass} 
+            key={item.id} 
+            name={item.name} 
+            category={item.category} 
+            addItemFun={updateCart} 
+          />
         ))}
       </ul>
     </div>
-  );
+  )
 }
 
-export default ShoppingList;
+export default ShoppingList

src/data/items.js

@@ -2,7 +2,7 @@ const items = [
   { id: 1, name: "Yogurt", category: "Dairy" },
   { id: 2, name: "Pomegranate", category: "Produce" },
   { id: 3, name: "Lettuce", category: "Produce" },
-  { id: 4, name: "String Cheese", category: "Dairy" },
+  { id: 4, name: "Milk", category: "Dairy" },
   { id: 5, name: "Cookies", category: "Dessert" },
 ];