멘토님 코드 리뷰용 PR

backend/.gitignore

@@ -4,7 +4,12 @@ build/
 !gradle/wrapper/gradle-wrapper.jar
 !**/src/main/**/build/
 !**/src/test/**/build/
-
+.DS_Store
+.idea/
+**/.idea
+**/main/resources/application.yml
+**/test/resources/application.yml
+../.idea
 ### STS ###
 .apt_generated
 .classpath
@@ -18,7 +23,6 @@ bin/
 !**/src/test/**/bin/
 
 ### IntelliJ IDEA ###
-.idea
 *.iws
 *.iml
 *.ipr

backend/build.gradle

@@ -33,12 +33,19 @@ dependencies {
 	developmentOnly 'org.springframework.boot:spring-boot-devtools'
 	runtimeOnly 'com.mysql:mysql-connector-j'
 	annotationProcessor 'org.projectlombok:lombok'
-	implementation 'io.jsonwebtoken:jjwt-api:0.12.3'
-	implementation 'io.jsonwebtoken:jjwt-impl:0.12.3'
-	implementation 'io.jsonwebtoken:jjwt-jackson:0.12.3'
+	implementation 'io.jsonwebtoken:jjwt-api:0.11.5'
+	implementation 'io.jsonwebtoken:jjwt-impl:0.11.5'
+	implementation 'io.jsonwebtoken:jjwt-jackson:0.11.5'
+	implementation 'org.springframework.boot:spring-boot-starter-data-redis'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 	testImplementation 'org.springframework.security:spring-security-test'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+	testRuntimeOnly 'com.h2database:h2'
+	testCompileOnly 'org.projectlombok:lombok'
+    testAnnotationProcessor 'org.projectlombok:lombok'
+
+    // 메일 템플릿 설정을 위한 thymeleaf
+    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
 }
 
 tasks.named('test') {

backend/src/main/java/com/example/backend/BackendApplication.java

@@ -2,7 +2,9 @@
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.scheduling.annotation.EnableAsync;
 
+@EnableAsync
 @SpringBootApplication
 public class BackendApplication {
 

backend/src/main/java/com/example/backend/domain/cart/controller/CartController.java

@@ -0,0 +1,36 @@
+package com.example.backend.domain.cart.controller;
+
+import com.example.backend.domain.cart.dto.CartForm;
+import com.example.backend.domain.cart.service.CartService;
+import com.example.backend.domain.member.entity.Member;
+import com.example.backend.global.auth.model.CustomUserDetails;
+import com.example.backend.global.response.GenericResponse;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/v1/carts")
+public class CartController {
+    private final CartService cartService;
+
+    @PostMapping
+    public ResponseEntity<GenericResponse<Long>> addCartItem(
+            @RequestBody @Valid CartForm cartForm,
+            @AuthenticationPrincipal CustomUserDetails customUserDetails) {
+
+        Member member = customUserDetails.getMember();
+
+        Long cartId = cartService.addCartItem(cartForm, member);
+
+        return ResponseEntity.status(HttpStatus.CREATED).body(GenericResponse.of(cartId));
+
+    }
+}

backend/src/main/java/com/example/backend/domain/cart/converter/CartConverter.java

@@ -0,0 +1,46 @@
+package com.example.backend.domain.cart.converter;
+
+import com.example.backend.domain.cart.dto.CartForm;
+import com.example.backend.domain.cart.dto.CartResponse;
+import com.example.backend.domain.cart.entity.Cart;
+import com.example.backend.domain.member.entity.Member;
+import com.example.backend.domain.product.entity.Product;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class CartConverter {
+
+    /**
+     * CartForm -> Cart 엔티티 변환
+     *
+     * @param cartForm 요청 DTO
+     * @param member   회원 엔티티
+     * @param product  상품 엔티티
+     * @return Cart 엔티티
+     */
+    public static Cart from(CartForm cartForm, Member member, Product product) {
+        return Cart.builder()
+                .member(member)
+                .product(product)
+                .quantity(cartForm.quantity())
+                .build();
+    }
+
+    /**
+     * Cart 엔티티 -> CartResponse 변환
+     *
+     * @param cart Cart 엔티티
+     * @return 응답 DTO
+     */
+    public static CartResponse toResponse(Cart cart) {
+        return CartResponse.builder()
+                .id(cart.getId())
+                .productName(cart.getProduct().getName())
+                .quantity(cart.getQuantity())
+                .productPrice(cart.getProduct().getPrice())
+                .totalPrice(cart.getProduct().getPrice() * cart.getQuantity())
+                .productImgUrl(cart.getProduct().getImgUrl())
+                .build();
+    }
+}

backend/src/main/java/com/example/backend/domain/cart/dto/CartForm.java

@@ -0,0 +1,14 @@
+package com.example.backend.domain.cart.dto;
+
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotNull;
+
+public record CartForm(
+        @NotNull(message = "회원 ID는 필수 값입니다.")
+        Long memberId,
+        @NotNull(message = "상품 ID는 필수 값입니다.")
+        Long productId,
+        @Min(value = 1, message = "상품 수량은 최소 1개 이상이어야 합니다.")
+        int quantity
+) {
+}

backend/src/main/java/com/example/backend/domain/cart/dto/CartResponse.java

@@ -0,0 +1,13 @@
+package com.example.backend.domain.cart.dto;
+
+import lombok.Builder;
+
+@Builder
+public record CartResponse(
+        Long id,
+        String productName,
+        int quantity,
+        int productPrice,
+        int totalPrice,
+        String productImgUrl
+) {}

backend/src/main/java/com/example/backend/domain/cart/entity/Cart.java

@@ -0,0 +1,33 @@
+package com.example.backend.domain.cart.entity;
+
+import com.example.backend.domain.member.entity.Member;
+import com.example.backend.domain.product.entity.Product;
+import jakarta.persistence.*;
+import lombok.*;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Cart {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "member_id")
+    private Member member;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "product_id")
+    private Product product;
+
+    private int quantity;
+
+    @Builder
+    public Cart(Long id, Member member, Product product, int quantity) {
+        this.member = member;
+        this.product = product;
+        this.quantity = quantity;
+    }
+}

backend/src/main/java/com/example/backend/domain/cart/exception/CartErrorCode.java

@@ -0,0 +1,16 @@
+package com.example.backend.domain.cart.exception;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import org.springframework.http.HttpStatus;
+
+@AllArgsConstructor
+@Getter
+public enum CartErrorCode {
+    ALREADY_EXISTS_IN_CART(HttpStatus.BAD_REQUEST, "이미 장바구니에 추가된 상품입니다.", "400-1"),
+    INVALID_QUANTITY(HttpStatus.BAD_REQUEST,"상품을 최소 1개 이상 추가하여야 합니다." ,"400-2");
+
+    final HttpStatus httpStatus;
+    final String message;
+    final String code;
+}

backend/src/main/java/com/example/backend/domain/cart/exception/CartException.java

@@ -0,0 +1,20 @@
+package com.example.backend.domain.cart.exception;
+
+import org.springframework.http.HttpStatus;
+
+public class CartException extends RuntimeException {
+    private CartErrorCode cartErrorCode;
+
+    public CartException(CartErrorCode cartErrorCode) {
+        super(cartErrorCode.message);
+        this.cartErrorCode = cartErrorCode;
+    }
+
+    public HttpStatus getStatus() {
+        return cartErrorCode.httpStatus;
+    }
+
+    public String getCode() {
+        return cartErrorCode.code;
+    }
+}

backend/src/main/java/com/example/backend/domain/cart/repository/CartRepository.java

@@ -0,0 +1,9 @@
+package com.example.backend.domain.cart.repository;
+
+import com.example.backend.domain.cart.entity.Cart;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface CartRepository extends JpaRepository<Cart, Long> {
+
+    boolean existsByProductId_IdAndMemberId_Id(Long productId, Long memberId);
+}

backend/src/main/java/com/example/backend/domain/cart/service/CartService.java

@@ -0,0 +1,53 @@
+package com.example.backend.domain.cart.service;
+
+import com.example.backend.domain.cart.converter.CartConverter;
+import com.example.backend.domain.cart.dto.CartForm;
+import com.example.backend.domain.cart.entity.Cart;
+import com.example.backend.domain.cart.exception.CartErrorCode;
+import com.example.backend.domain.cart.exception.CartException;
+import com.example.backend.domain.cart.repository.CartRepository;
+import com.example.backend.domain.member.entity.Member;
+import com.example.backend.domain.product.service.ProductService;
+import com.example.backend.global.auth.exception.AuthErrorCode;
+import com.example.backend.global.auth.exception.AuthException;
+import jakarta.transaction.Transactional;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class CartService {
+
+    private final CartRepository cartRepository;
+    private final ProductService productService;
+
+    @Transactional
+    public Long addCartItem(CartForm cartForm, Member member) {
+        // 로그인한 회원과 요청한 회원이 다르면 exception 발생
+        if (member.getId() != cartForm.memberId()) {
+            throw new AuthException(AuthErrorCode.MEMBER_NOT_FOUND);
+        }
+        // 요청한 상품 ID와 수량
+        Long productId = cartForm.productId();
+        int quantity = cartForm.quantity();
+
+        // 수량이 0 이하인 경우 exception 발생
+        if (quantity <= 0) {
+            throw new CartException(CartErrorCode.INVALID_QUANTITY);
+        }
+
+        // 이미 장바구니에 있는 상품인 경우 exception 발생
+        if (cartRepository.existsByProductId_IdAndMemberId_Id(productId, member.getId())) {
+            throw new CartException(CartErrorCode.ALREADY_EXISTS_IN_CART);
+        }
+
+        // 장바구니에 상품 추가
+        Cart cart = CartConverter.from(
+                cartForm,
+                member,
+                productService.findById(productId)
+        );
+
+        return cartRepository.save(cart).getId();
+    }
+}

backend/src/main/java/com/example/backend/domain/common/Address.java

@@ -0,0 +1,38 @@
+package com.example.backend.domain.common;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Embeddable;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+/**
+ * Address
+ * <p>주소지 정보를 관리하는 클래스 입니다.</p>
+ * @author Kim Dong O
+ */
+@Embeddable
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Address {
+	@Column(nullable = false)
+	private String city; //시
+
+	@Column(nullable = false)
+	private String district; //구
+
+	@Column(nullable = false)
+	private String country; //도로명 주소
+
+	@Column(nullable = false)
+	private String detail; //상세 주소
+
+	@Builder
+	public Address(String city, String district, String country, String detail) {
+		this.city = city;
+		this.district = district;
+		this.country = country;
+		this.detail = detail;
+	}
+}

backend/src/main/java/com/example/backend/domain/common/EmailCertification.java

@@ -0,0 +1,42 @@
+package com.example.backend.domain.common;
+
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+
+/**
+ * EmailCertification
+ * <p>인증 코드와 타입, 전송 횟수를 저장하는 객체 입니다.</p>
+ * @author Kim Dong O
+ */
+@Getter
+@NoArgsConstructor
+@ToString
+public class EmailCertification {
+	private String certificationCode;
+	private String verifyType;
+	private String sendCount;
+
+	@Builder
+	public EmailCertification(String certificationCode, String verifyType, String sendCount) {
+		this.certificationCode = certificationCode;
+		this.verifyType = verifyType;
+		this.sendCount = sendCount;
+	}
+
+	public EmailCertification(String certificationCode, String verifyType) {
+		this.certificationCode = certificationCode;
+		this.verifyType = verifyType;
+		this.sendCount = "1";
+	}
+
+	public void addResendCount() {
+		int count = Integer.parseInt(sendCount);
+		this.sendCount = String.valueOf(count + 1);
+	}
+
+	public void setCertificationCode(String certificationCode) {
+		this.certificationCode = certificationCode;
+	}
+}