feat: cart error-fix core-module

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

@@ -13,7 +13,7 @@
 public class Cart {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    @Column(name = "item_id")
+    @Column(name = "cart_id")
     private Long id;
 
     @ManyToOne(fetch = FetchType.LAZY)
@@ -25,4 +25,8 @@ public class Cart {
     private Menu menu;
 
     private Integer quantity;
+
+    public void setCartQuantity(Integer quantity) {
+        this.quantity = quantity;
+    }
 }

core-module/src/main/java/com/likelion/coremodule/cart/exception/CartErrorCode.java

@@ -0,0 +1,24 @@
+package com.likelion.coremodule.cart.exception;
+
+import com.likelion.commonmodule.exception.common.ApiResponse;
+import com.likelion.commonmodule.exception.common.BaseErrorCode;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import org.springframework.http.HttpStatus;
+
+@Getter
+@AllArgsConstructor
+public enum CartErrorCode implements BaseErrorCode {
+
+    NO_CART_INFO(HttpStatus.BAD_REQUEST, "2000", "장바구니 안에 상품이 존재하지 않습니다.");
+
+    private final HttpStatus httpStatus;
+    private final String code;
+    private final String message;
+
+
+    @Override
+    public ApiResponse<Void> getErrorResponse() {
+        return null;
+    }
+}

core-module/src/main/java/com/likelion/coremodule/cart/exception/CartException.java

@@ -0,0 +1,22 @@
+package com.likelion.coremodule.cart.exception;
+
+import com.likelion.commonmodule.exception.common.BaseErrorCode;
+import lombok.Getter;
+
+@Getter
+public class CartException extends RuntimeException {
+
+    private final BaseErrorCode errorCode;
+
+    private final Throwable cause;
+
+    public CartException(BaseErrorCode errorCode) {
+        this.errorCode = errorCode;
+        this.cause = null;
+    }
+
+    public CartException(BaseErrorCode errorCode, Throwable cause) {
+        this.errorCode = errorCode;
+        this.cause = cause;
+    }
+}

core-module/src/main/java/com/likelion/coremodule/cart/repository/CartRepository.java

@@ -9,5 +9,9 @@ public interface CartRepository extends JpaRepository<Cart, Long> {
 
     List<Cart> findCartsByUserUserId(Long userId);
 
+    int countCartsByUserUserIdAndMenuId(Long userId, Long menuId);
+
+    Cart findCartByUserUserIdAndId(Long userId, Long cartId);
+
     void deleteCartByIdAndUserUserId(Long cartId, Long userId);
 }

core-module/src/main/java/com/likelion/coremodule/cart/service/CartQueryService.java

@@ -21,6 +21,14 @@ public List<Cart> findCartsByUserId(Long userId) {
         return cartRepository.findCartsByUserUserId(userId);
     }
 
+    public int findCartByUserIdAndMenuId(Long userId, Long menuId) {
+        return cartRepository.countCartsByUserUserIdAndMenuId(userId, menuId);
+    }
+
+    public Cart findCartByUserIdAndCartId(Long userId, Long cartId) {
+        return cartRepository.findCartByUserUserIdAndId(userId, cartId);
+    }
+
     public void deleteCartByUserIdAndCartId(Long userId, Long cartId) {
 
         cartRepository.deleteCartByIdAndUserUserId(cartId, userId);