2025-RealCoding · kim-yoobin · Jun 15, 2025
diff --git a/package-lock.json b/package-lock.json
diff --git a/src/app/checkout/page.tsx b/src/app/checkout/page.tsx
@@ -1,5 +1,6 @@
 // CheckoutPage
-import { useState } from "react";
+import { useEffect, useState } from "react";
+import { useRouter } from "next/navigation";
 import { ProductItem } from "@/types/Product";
 
 interface CheckoutItem {
@@ -9,13 +10,56 @@ interface CheckoutItem {
 //  과제 3
 export default function CheckoutPage() {
   const [items, setItems] = useState<CheckoutItem[]>([]);
-  // 3.1. 결제하기 구현
+  const router = useRouter();
+
+  useEffect(() => {
+    const data = localStorage.getItem("checkoutItems");
+    if (data) {
+      const parsed: CheckoutItem[] = JSON.parse(data);
+      setItems(parsed);
+      localStorage.removeItem("checkoutItems");
+    }
+  }, []);
+
+  const total = items.reduce(
+    (sum, item) => sum + Number(item.product.lprice) * item.quantity,
+    0
+  );
   return (
     <div className="p-6 max-w-3xl mx-auto bg-white rounded shadow mt-6">
       <h1 className="text-2xl font-bold mb-4">✅ 결제가 완료되었습니다!</h1>
       {/* 3.1. 결제하기 구현 */}
+      {items.length === 0 ? (
+        <p className="text-gray-500">결제된 아이템이 없습니다.</p>
+      ) : (
+        <>
+          <ul className="divide-y divide-gray-200">
+            {items.map(({ product, quantity }) => (
+              <li key={product.productId} className="py-2 flex justify-between">
+                <div>
+                  <p dangerouslySetInnerHTML={{ __html: product.title }} />
+                  <p className="text-sm text-gray-500">수량: {quantity}</p>
+                </div>
+                <div className="font-bold text-right">
+                  {(Number(product.lprice) * quantity).toLocaleString()}원
+                </div>
+              </li>
+            ))}
+          </ul>
+
+          <div className="text-right mt-4 text-lg font-bold">
+            총 합계: {total.toLocaleString()}원
+          </div>
+        </>
+      )}
       <div></div>
       {/* 3.2. 홈으로 가기 버튼 구현 */}
+      <button
+        onClick={() => router.push("/")}
+        className="mt-6 w-full bg-blue-500 text-white py-2 rounded hover:bg-blue-600 transition"
+      >
+        홈으로 가기
+      </button>
     </div>
   );
 }
diff --git a/src/app/layout.tsx b/src/app/layout.tsx
@@ -1,6 +1,7 @@
 import type { Metadata } from "next";
 import { Geist, Geist_Mono } from "next/font/google";
 import "./globals.css";
+import { UserProvider } from "@/context/UserContext";
 
 const geistSans = Geist({
   variable: "--font-geist-sans",
@@ -27,7 +28,7 @@ export default function RootLayout({
       <body
         className={`${geistSans.variable} ${geistMono.variable} antialiased`}
       >
-        {children}
+        <UserProvider>{children}</UserProvider>
       </body>
     </html>
   );

diff --git a/src/app/mypage/page.tsx b/src/app/mypage/page.tsx
@@ -1,14 +1,40 @@
+"use client";
+
+import Header from "@/component/layout/Header";
+import { useUser } from "@/context/UserContext";
+import Link from "next/link";
+
 // 과제 1: 마이페이지 구현
 export default function MyPage() {
   // 1.1. UserContext를 활용한 Mypage 구현 (UserContext에 아이디(userId: string), 나이(age: number), 핸드폰번호(phoneNumber: string) 추가)
+const { user } = useUser();
 
   return (
     <div className="flex flex-col items-center min-h-screen bg-gray-50">
       {/* 1.2. Header Component를 재활용하여 Mypage Header 표기 (title: 마이페이지) */}
-      <p>마이페이지</p>
+      <Header title="마이페이지" />
       {/* Mypage 정보를 UserContext 활용하여 표시 (이름, 아이디, 나이, 핸드폰번호 모두 포함) */}
-
+      <div className="bg-white shadow-md p-6 mt-6 rounded-md w-80 text-left space-y-2">
+        <p>
+          <strong>이름:</strong> {user.name}
+        </p>
+        <p>
+          <strong>아이디:</strong> {user.userId}
+        </p>
+        <p>
+          <strong>나이:</strong> {user.age}
+        </p>
+        <p>
+          <strong>핸드폰번호:</strong> {user.phoneNumber}
+        </p>
+      </div>
       {/* 1.3. 홈으로 가기 버튼 구현(Link or Router 활용) */}
+      <Link
+        href="/"
+        className="mt-6 px-4 py-2 bg-blue-500 text-white rounded hover:bg-blue-600 transition"
+      >
+        홈으로 가기
+      </Link>
     </div>
   );
 }
diff --git a/src/app/search/page.tsx b/src/app/search/page.tsx
@@ -15,7 +15,12 @@ export default function SearchHome() {
   //  페이지 최초 렌더링 될 때, setUser로 이름 설정
   useEffect(() => {
     //  학번 + 이름 형태로 작성 (ex. 2025***** 내이름 )
-    setUser({ name: "" });
+    setUser({
+      userId: "202102636 박상우",
+      name: "parksangwoo",
+      age: 3,
+      phoneNumber: "010-1234-5678",
+    });
   }, []);
 
   return (

diff --git a/src/component/search/SearchInput.tsx b/src/component/search/SearchInput.tsx
@@ -1,8 +1,14 @@
 "use client";
 import { useSearch } from "@/context/SearchContext";
+import { useRef, useEffect } from "react";
 
 export default function SearchInput() {
   const { query, setQuery, setResult } = useSearch();
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  useEffect(() => {
+    inputRef.current?.focus();
+  }, []);
 
   // 검색 기능
   const search = async () => {
@@ -19,13 +25,16 @@ export default function SearchInput() {
   };
 
   // 2.2. SearchInput 컴포넌트가 최초 렌더링 될 때, input tag에 포커스 되는 기능
-  const handleInputChange = () => {};
+  const handleInputChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    setQuery(e.target.value);
+  };
 
   // 과제 1-2-3: 페이지 최초 렌더링 시, input에 포커스 되는 기능 (useRef)
 
   return (
     <div className="flex justify-center items-center gap-2 mt-4">
       <input
+        ref={inputRef}
         type="text"
         value={query}
         onChange={handleInputChange}

diff --git a/src/component/shopping/CartList.tsx b/src/component/shopping/CartList.tsx
@@ -1,5 +1,6 @@
 "use client";
 import { ProductItem } from "@/types/Product";
+import { useRouter } from "next/navigation";
 
 interface Props {
   cart: { [productId: string]: number };
@@ -20,8 +21,21 @@ export default function CartList({ cart, products, onRemove }: Props) {
     0
   );
 
+  const router = useRouter();
+
   // 2.4 결제하기: "결제하기" 버튼을 클릭하면, 현재 장바구니에 담긴 상품을 확인해 **localStorage**에 저장 후, 결제완료(/checkout) 페이지로 이동한다.
-  const handleCheckout = () => {};
+  const handleCheckout = () => {
+    const checkoutItems = cartItems.map((item) => ({
+      productId: item.productId,
+      title: item.title,
+      price: Number(item.lprice),
+      quantity: item.quantity,
+    }));
+
+    localStorage.setItem("checkoutItems", JSON.stringify(checkoutItems));
+
+    router.push("/checkout");
+  };
 
   return (
     <div className="p-4 bg-white rounded shadow mt-6">
@@ -57,7 +71,6 @@ export default function CartList({ cart, products, onRemove }: Props) {
       <div className="text-right font-bold text-lg mt-4">
         총 합계: {total.toLocaleString()}원
       </div>
-
       <div className="flex justify-center">
         <button
           onClick={handleCheckout}

diff --git a/src/component/shopping/ProductCart.tsx b/src/component/shopping/ProductCart.tsx
@@ -19,16 +19,36 @@ export default function ProductCart({ items }: { items: ProductItem[] }) {
     localStorage.getItem(item.productId);
   };
 
+  useEffect(() => {
+    const hasItems = Object.keys(cart).length > 0;
+    setShowCart(hasItems);
+  }, [cart]);
+
   /* 과제 2-3: Cart 아이템 지우기 */
-  const handleRemoveFromCart = () => {};
+  const handleRemoveFromCart = (productId: string) => {
+    setCart((prev) => {
+      const updated = Object.fromEntries(
+        Object.entries(prev).filter(([id]) => id !== productId)
+      );
+      return updated;
+    });
+
+    localStorage.removeItem(productId);
+  };
 
   return (
     <div className="p-10">
       {/* 상품 리스트 */}
       <ProductList items={items} onAddToCart={handleAddToCart} />
       {/* 장바구니 */}
       {/* 2.1. 조건부 카트 보이기: 카트에 담긴 상품이 없으면 카트가 보이지 않고, 카트에 담긴 물건이 있으면 카트가 보인다 */}
-      <CartList cart={cart} products={items} onRemove={handleRemoveFromCart} />
+      {showCart && (
+        <CartList
+          cart={cart}
+          products={items}
+          onRemove={handleRemoveFromCart}
+        />
+      )}
     </div>
   );
 }
diff --git a/src/context/UserContext.tsx b/src/context/UserContext.tsx
@@ -5,9 +5,10 @@ import { createContext, ReactNode, useContext, useState } from "react";
 
 // User
 interface User {
+  userId: string;
   name: string;
-  // age: number
-  // 추가하고 싶은 속성들 ...
+  age: number;
+  phoneNumber: string;
 }
 // UserContextType
 interface UserContextType {
@@ -22,7 +23,12 @@ export const UserContext = createContext<UserContextType | undefined>(
 
 // 2. Provider 생성
 export const UserProvider = ({ children }: { children: ReactNode }) => {
-  const [user, setUser] = useState<User>({ name: "" });
+  const [user, setUser] = useState<User>({
+    userId: "202302537 김유빈",
+    name: "Kimyoobin",
+    age: 24,
+    phoneNumber: "010-1234-5678",
+  });
   return (
     <UserContext.Provider value={{ user, setUser }}>
       {children}
@@ -34,8 +40,6 @@ export const UserProvider = ({ children }: { children: ReactNode }) => {
 export const useUser = () => {
   const context = useContext(UserContext);
   // 에러처리
-  if (!context) {
-    throw new Error("error");
-  }
+  if (!context) throw new Error("No UserContext");
   return context;
 };