feat: 장바구니 저장 기능

api-module/src/main/java/com/likelion/apimodule/cart/application/CartSaveUseCase.java

@@ -0,0 +1,34 @@
+package com.likelion.apimodule.cart.application;
+
+import com.likelion.apimodule.cart.dto.CartSaveReq;
+import com.likelion.apimodule.security.util.JwtUtil;
+import com.likelion.coremodule.cart.domain.Cart;
+import com.likelion.coremodule.cart.service.CartQueryService;
+import com.likelion.coremodule.menu.domain.Menu;
+import com.likelion.coremodule.menu.service.MenuQueryService;
+import com.likelion.coremodule.user.application.UserQueryService;
+import com.likelion.coremodule.user.domain.User;
+import lombok.RequiredArgsConstructor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class CartSaveUseCase {
+
+    private final CartQueryService cartQueryService;
+    private final JwtUtil jwtUtil;
+    private final UserQueryService userQueryService;
+    private final MenuQueryService menuQueryService;
+
+    public void saveMyCart(String accessToken, CartSaveReq saveReq) {
+
+        String email = jwtUtil.getEmail(accessToken);
+        User user = userQueryService.findByEmail(email);
+
+        Menu menu = menuQueryService.findMenuById(saveReq.menuId());
+
+        final Cart cart = Cart.builder().user(user).menu(menu).quantity(saveReq.quantity()).build();
+        cartQueryService.saveCart(cart);
+    }
+}

api-module/src/main/java/com/likelion/apimodule/cart/dto/CartSaveReq.java

@@ -0,0 +1,7 @@
+package com.likelion.apimodule.cart.dto;
+
+public record CartSaveReq(
+        Long menuId,
+        Integer quantity
+) {
+}

api-module/src/main/java/com/likelion/apimodule/cart/presentation/CartController.java

@@ -1,7 +1,9 @@
 package com.likelion.apimodule.cart.presentation;
 
 import com.likelion.apimodule.cart.application.CartFindUseCase;
+import com.likelion.apimodule.cart.application.CartSaveUseCase;
 import com.likelion.apimodule.cart.dto.CartInfo;
+import com.likelion.apimodule.cart.dto.CartSaveReq;
 import com.likelion.commonmodule.exception.common.ApplicationResponse;
 import com.likelion.commonmodule.security.util.AuthConsts;
 import io.swagger.v3.oas.annotations.Operation;
@@ -10,10 +12,7 @@
 import io.swagger.v3.oas.annotations.tags.Tag;
 import lombok.RequiredArgsConstructor;
 import org.springframework.validation.annotation.Validated;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestHeader;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
 
@@ -25,6 +24,7 @@
 public class CartController {
 
     private final CartFindUseCase cartFindUseCase;
+    private final CartSaveUseCase cartSaveUseCase;
 
     // 장바구니 조회
     @GetMapping
@@ -46,6 +46,23 @@ public ApplicationResponse<List<CartInfo>> getMyCartInfo(@RequestHeader(AuthCons
     }
 
     // 장바구니 저장
+    @PostMapping
+    @ApiResponses(
+            value = {
+                    @ApiResponse(
+                            responseCode = "200",
+                            description = "나의 장바구니 저장 성공",
+                            useReturnTypeSchema = true
+                    )
+            }
+    )
+    @Operation(summary = "나의 장바구니 저장 API", description = "나의 장바구니 저장 API 입니다.")
+    public ApplicationResponse<String> saveMyCart(@RequestHeader(AuthConsts.ACCESS_TOKEN_HEADER) String accessToken,
+                                                  @RequestBody CartSaveReq saveReq) {
+
+        cartSaveUseCase.saveMyCart(accessToken, saveReq);
+        return ApplicationResponse.ok("장바구니 저장 완료");
+    }
 
     // 장바구니 삭제
 }

core-module/src/main/java/com/likelion/coremodule/cart/domain/Cart.java

@@ -7,7 +7,6 @@
 
 @Builder
 @Getter
-@Setter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 @AllArgsConstructor
 @Entity