20251222 #48 주문시 기본 동작 추가

src/main/java/com/campustable/be/domain/menu/entity/Menu.java

@@ -2,6 +2,8 @@
 
 import com.campustable.be.domain.category.entity.Category;
 import com.campustable.be.domain.menu.dto.MenuUpdateRequest;
+import com.campustable.be.global.exception.CustomException;
+import com.campustable.be.global.exception.ErrorCode;
 import jakarta.persistence.*;
 import jakarta.validation.constraints.NotNull;
 import lombok.AllArgsConstructor;
@@ -84,4 +86,14 @@ public void update(MenuUpdateRequest request) {
     }
   }
 
+  public void decreaseStockQuantity(int quantity) {
+    if(this.stockQuantity - quantity < 0) {
+      throw new CustomException(ErrorCode.MENU_OUT_OF_STOCK);
+    }
+    else if(this.stockQuantity - quantity == 0) {
+      this.available = false;
+    }
+    this.stockQuantity -= quantity;
+  }
+
 }

src/main/java/com/campustable/be/domain/order/controller/OrderController.java

@@ -0,0 +1,69 @@
+package com.campustable.be.domain.order.controller;
+
+
+import com.campustable.be.domain.order.dto.OrderResponse;
+import com.campustable.be.domain.order.service.OrderService;
+import com.campustable.be.global.aop.LogMonitoringInvocation;
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/orders")
+public class OrderController implements OrderControllerDocs {
+
+  private final OrderService orderService;
+
+  @Override
+  @LogMonitoringInvocation
+  @PostMapping
+  public ResponseEntity<OrderResponse> createOrder() {
+    return ResponseEntity.ok(orderService.createOrder());
+  }
+
+  @Override
+  @LogMonitoringInvocation
+  @PatchMapping("/{orderId}/categories/{categoryId}/ready")
+  @PreAuthorize("hasRole('ROLE_ADMIN')")
+  public ResponseEntity<Void> updateCategoryToReady(
+      @PathVariable Long orderId,
+      @PathVariable Long categoryId) {
+    orderService.updateCategoryToReady(orderId,categoryId);
+    return ResponseEntity.ok().build();
+  }
+
+  @Override
+  @LogMonitoringInvocation
+  @PatchMapping("/{orderId}/categories/{categoryId}/complete")
+  @PreAuthorize("hasRole('ROLE_ADMIN')")
+  public ResponseEntity<Void> updateCategoryToComplete(
+      @PathVariable Long orderId,
+      @PathVariable Long categoryId
+  ) {
+    orderService.updateCategoryToComplete(orderId,categoryId);
+    return ResponseEntity.ok().build();
+  }
+
+  @Override
+  @LogMonitoringInvocation
+  @GetMapping
+  public ResponseEntity<List<OrderResponse>> getMyOrders() {
+    return ResponseEntity.ok(orderService.getMyOrders());
+  }
+
+  @Override
+  @GetMapping("/users/{userId}")
+  @PreAuthorize("hasRole('ROLE_ADMIN')")
+  public ResponseEntity<List<OrderResponse>> getOrdersByUserId(@PathVariable Long userId) {
+    return ResponseEntity.ok(orderService.getOrdersByUserId(userId));
+  }
+
+}

src/main/java/com/campustable/be/domain/order/controller/OrderControllerDocs.java

@@ -0,0 +1,50 @@
+package com.campustable.be.domain.order.controller;
+
+import com.campustable.be.domain.order.dto.OrderResponse;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import java.util.List;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PathVariable;
+
+@Tag(name = "Order API", description = "주문 관련 API (생성, 조회, 상태 변경)")
+public interface OrderControllerDocs {
+
+  @Operation(summary = "주문 생성", description = "현재 사용자의 장바구니에 담긴 메뉴들로 주문을 생성합니다.")
+  @ApiResponses(value = {
+      @ApiResponse(responseCode = "200", description = "주문 생성 성공"),
+      @ApiResponse(responseCode = "400", description = "재고 부족"),
+      @ApiResponse(responseCode = "404", description = "장바구니가 비어있거나 사용자를 찾을 수 없음")
+  })
+  ResponseEntity<OrderResponse> createOrder();
+
+  @Operation(summary = "카테고리별 조리 완료 처리 (관리자)", description = "특정 주문(OrderId) 내의 특정 카테고리(CategoryId) 메뉴들을 모두 '조리 완료'로 변경합니다.")
+  ResponseEntity<Void> updateCategoryToReady(
+      @Parameter(description = "주문 ID", example = "1") @PathVariable Long orderId,
+      @Parameter(description = "카테고리 ID", example = "2") @PathVariable Long categoryId
+  );
+
+  @Operation(summary = "카테고리별 수령 완료 처리 (관리자)", description = "특정 주문(OrderId) 내의 특정 카테고리(CategoryId) 메뉴들을 모두 '수령 완료'로 변경합니다.")
+  ResponseEntity<Void> updateCategoryToComplete(
+      @Parameter(description = "주문 ID", example = "1") @PathVariable Long orderId,
+      @Parameter(description = "카테고리 ID", example = "2") @PathVariable Long categoryId
+  );
+
+  @Operation(summary = "내 주문 내역 조회", description = "사용자의 주문 내역을 조회합니다. (진행 중인 주문이 상단에 노출됨)")
+  @ApiResponse(responseCode = "200", description = "조회 성공")
+  ResponseEntity<List<OrderResponse>> getMyOrders();
+
+  @Operation(summary = "특정 유저 주문 조회 (관리자)", description = "관리자가 특정 유저(User ID)의 모든 주문 내역을 조회합니다.")
+  @ApiResponses(value = {
+      @ApiResponse(responseCode = "200", description = "조회 성공"),
+      @ApiResponse(responseCode = "403", description = "관리자 권한 없음"),
+      @ApiResponse(responseCode = "404", description = "해당 유저를 찾을 수 없음")
+  })
+  ResponseEntity<List<OrderResponse>> getOrdersByUserId(
+      @Parameter(description = "조회할 유저 ID", example = "5")
+      @PathVariable Long userId
+  );
+}

src/main/java/com/campustable/be/domain/order/dto/OrderItemDto.java

@@ -0,0 +1,33 @@
+package com.campustable.be.domain.order.dto;
+
+import com.campustable.be.domain.order.entity.OrderItem;
+import com.campustable.be.domain.order.entity.OrderStatus;
+import lombok.AccessLevel;
+import lombok.Getter;
+
+@Getter
+public class OrderItemDto {
+
+  private Long orderItemId;
+  private Long menuId;
+  private String menuName;
+  private int orderPrice;
+  private int quantity;
+  private int subTotal;
+  private String menuUrl;
+  private OrderStatus status;
+  private Long categoryId;
+
+  public OrderItemDto(OrderItem orderItem) {
+    this.orderItemId = orderItem.getOrderItemId();
+    this.menuId = orderItem.getMenu().getId();
+    this.menuName = orderItem.getMenu().getMenuName();
+    this.orderPrice = orderItem.getOrderPrice(); //주문 당시가격
+    this.quantity = orderItem.getQuantity();
+    this.subTotal = orderItem.getOrderPrice() * orderItem.getQuantity();
+    this.menuUrl = orderItem.getMenu().getMenuUrl();
+    this.status = orderItem.getStatus();
+    this.categoryId=orderItem.getCategoryId();
+  }
+
+}

src/main/java/com/campustable/be/domain/order/dto/OrderResponse.java

@@ -0,0 +1,30 @@
+package com.campustable.be.domain.order.dto;
+
+import com.campustable.be.domain.order.entity.Order;
+import java.time.LocalDateTime;
+import java.util.List;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+@Builder
+@AllArgsConstructor // Builder와 함께 사용 시 관례적으로 추가
+public class OrderResponse {
+
+  private Long orderId;
+  private int totalPrice;
+  private LocalDateTime orderDate;
+  private List<OrderItemDto> orderItems;
+
+  public static OrderResponse from(Order order) {
+    return OrderResponse.builder()
+        .orderId(order.getOrderId())
+        .totalPrice(order.getTotalPrice())
+        .orderDate(order.getCreatedAt()) // BaseTimeEntity의 생성일
+        .orderItems(order.getOrderItems().stream()
+            .map(OrderItemDto::new)
+            .toList())
+        .build();
+  }
+}

src/main/java/com/campustable/be/domain/order/entity/Order.java

@@ -0,0 +1,62 @@
+package com.campustable.be.domain.order.entity;
+
+import com.campustable.be.domain.user.entity.User;
+import com.campustable.be.global.common.BaseTimeEntity;
+import com.campustable.be.global.exception.CustomException;
+import com.campustable.be.global.exception.ErrorCode;
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+import java.util.ArrayList;
+import java.util.List;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@Table(name="orders")
+public class Order extends BaseTimeEntity {
+  @Id
+  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  @Column(name="order_id")
+  private Long orderId;
+
+  @ManyToOne(fetch = FetchType.LAZY)
+  @JoinColumn(name = "user_id")
+  private User user;
+
+  @OneToMany(mappedBy = "order", cascade = CascadeType.ALL)
+  private List<OrderItem> orderItems = new ArrayList<>();
+
+  private int totalPrice;
+
+
+  public static Order createOrder(User user, List<OrderItem> orderItems) {
+    Order order = new Order();
+    order.setUser(user);
+    for (OrderItem orderItem : orderItems) {
+      order.addOrderItem(orderItem);
+    }
+    order.setTotalPrice(orderItems.stream().mapToInt(OrderItem::getTotalPrice).sum());
+    return order;
+  }
+
+  public void addOrderItem(OrderItem orderItem) {
+    orderItems.add(orderItem);
+    orderItem.setOrder(this);
+  }
+
+}

src/main/java/com/campustable/be/domain/order/entity/OrderItem.java

@@ -0,0 +1,75 @@
+package com.campustable.be.domain.order.entity;
+
+
+import com.campustable.be.domain.menu.entity.Menu;
+import com.campustable.be.global.exception.CustomException;
+import com.campustable.be.global.exception.ErrorCode;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+@Entity
+public class OrderItem {
+
+  @Id
+  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  private Long orderItemId;
+
+  @ManyToOne(fetch = FetchType.LAZY)
+  @JoinColumn(name="order_id")
+  private Order order;
+
+  @ManyToOne(fetch = FetchType.LAZY)
+  @JoinColumn(name="menu_id")
+  private Menu menu;
+
+  @Enumerated(EnumType.STRING)
+  private OrderStatus status;
+
+  private String menuName;
+  private int orderPrice;
+  private int quantity;
+
+  private Long categoryId;
+
+  public static OrderItem createOrderItem(Menu menu, int orderPrice, int quantity) {
+    OrderItem orderItem = new OrderItem();
+    orderItem.setMenu(menu);
+    orderItem.setStatus(OrderStatus.PREPARING);
+    orderItem.setMenuName(menu.getMenuName());
+    orderItem.setOrderPrice(orderPrice);
+    orderItem.setQuantity(quantity);
+    orderItem.setCategoryId(menu.getCategory().getCategoryId());
+    return orderItem;
+  }
+
+  public int getTotalPrice() {
+    return getOrderPrice() * getQuantity();
+  }
+
+  public void markAsReady() {
+    if (this.status != OrderStatus.PREPARING) {
+      throw new CustomException(ErrorCode.INVALID_ORDER_STATUS);
+    }
+    this.status = OrderStatus.READY;
+  }
+
+  // 수령 대기 -> 주문 완료
+  public void markAsCompleted() {
+    if (this.status != OrderStatus.READY) {
+      throw new CustomException(ErrorCode.INVALID_ORDER_STATUS);
+    }
+    this.status = OrderStatus.COMPLETED;
+  }
+
+}

src/main/java/com/campustable/be/domain/order/entity/OrderStatus.java

@@ -0,0 +1,17 @@
+package com.campustable.be.domain.order.entity;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum OrderStatus {
+
+  PREPARING("조리 중"),
+
+  READY("수령 대기"),
+
+  COMPLETED("주문 완료");
+
+  private final String description;
+}

src/main/java/com/campustable/be/domain/order/repository/OrderItemRepository.java

@@ -0,0 +1,11 @@
+package com.campustable.be.domain.order.repository;
+
+import com.campustable.be.domain.order.entity.OrderItem;
+import java.util.List;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface  OrderItemRepository extends JpaRepository<OrderItem, Long> {
+
+  List<OrderItem> findByOrderOrderIdAndCategoryId(Long orderId, Long categoryId);
+
+}

src/main/java/com/campustable/be/domain/order/repository/OrderRepository.java

@@ -0,0 +1,11 @@
+package com.campustable.be.domain.order.repository;
+
+import com.campustable.be.domain.order.entity.Order;
+import java.util.Collection;
+import java.util.List;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface OrderRepository extends JpaRepository<Order, Long> {
+
+  List<Order> findByUserUserIdOrderByCreatedAtDesc(Long userId);
+}