[#46] 경매 상품 결제(포인트) 기능 추가

module-api/src/main/java/com/example/moduleapi/controller/apiException/ApiExceptionController.java

@@ -7,6 +7,7 @@
 import com.example.moduleapi.exception.file.CreateDirectoryFailException;
 import com.example.moduleapi.exception.file.DeleteImageFailException;
 import com.example.moduleapi.exception.file.ImageFileUploadFailException;
+import com.example.moduleapi.exception.point.PointDeductionFailedException;
 import com.example.moduleapi.exception.product.NotFoundProductException;
 import com.example.moduleapi.exception.product.ProductNotPendingException;
 import com.example.moduleapi.exception.product.UnauthorizedEnrollException;
@@ -105,4 +106,10 @@ public ErrorResponse redisLockAcquisitionException(RedisLockAcquisitionException
     public ErrorResponse redisLockOperationException(RedisLockInterruptedException e) {
         return new ErrorResponse(e.getMessage());
     }
+
+    @ExceptionHandler(PointDeductionFailedException.class)
+    @ResponseStatus(HttpStatus.BAD_REQUEST)
+    public ErrorResponse pointDeductionFailedException(PointDeductionFailedException e) {
+        return new ErrorResponse(e.getMessage());
+    }
 }

module-api/src/main/java/com/example/moduleapi/controller/point/PointController.java

@@ -0,0 +1,35 @@
+package com.example.moduleapi.controller.point;
+
+import com.example.moduleapi.controller.request.point.PointAmount;
+import com.example.moduleapi.controller.response.point.PointResponse;
+import com.example.moduleapi.service.point.PointService;
+import com.example.moduledomain.domain.user.CustomUserDetails;
+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
+@RequestMapping("/api/v1/point")
+public class PointController {
+
+    private final PointService pointService;
+
+    public PointController(PointService pointService) {
+        this.pointService = pointService;
+    }
+
+    // 포인트 충전
+    @PostMapping("/charge")
+    public PointResponse chargePoint(
+            @AuthenticationPrincipal CustomUserDetails customUserDetails,
+            @RequestBody PointAmount pointAmount) {
+        int totalPoint = pointService.chargePoint(customUserDetails, pointAmount);
+        PointResponse pointResponse = PointResponse.builder()
+                .currentPoint(totalPoint)
+                .message("포인트가 성공적으로 충전되었습니다.")
+                .build();
+        return pointResponse;
+    }
+}

module-api/src/main/java/com/example/moduleapi/controller/request/point/PointAmount.java

@@ -0,0 +1,14 @@
+package com.example.moduleapi.controller.request.point;
+
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+public class PointAmount {
+    private int amount;
+
+    public PointAmount(int amount) {
+        this.amount = amount;
+    }
+}

module-api/src/main/java/com/example/moduleapi/controller/response/point/PointResponse.java

@@ -0,0 +1,18 @@
+package com.example.moduleapi.controller.response.point;
+
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+public class PointResponse {
+    private int currentPoint;
+    private String message;
+
+    @Builder
+    public PointResponse(int currentPoint, String message) {
+        this.currentPoint = currentPoint;
+        this.message = message;
+    }
+}

module-api/src/main/java/com/example/moduleapi/exception/point/PointDeductionFailedException.java

@@ -0,0 +1,7 @@
+package com.example.moduleapi.exception.point;
+
+public class PointDeductionFailedException extends RuntimeException {
+    public PointDeductionFailedException(Long userId) {
+        super(userId + ": 포인트가 부족합니다.");
+    }
+}

module-api/src/main/java/com/example/moduleapi/service/auction/AuctionService.java

@@ -1,11 +1,13 @@
 package com.example.moduleapi.service.auction;
 
 import com.example.moduleapi.controller.request.auction.BidRequest;
+import com.example.moduleapi.controller.request.point.PointAmount;
 import com.example.moduleapi.controller.response.auction.BidResponse;
 import com.example.moduleapi.controller.response.product.ProductFindResponse;
 import com.example.moduleapi.exception.auction.BiddingFailException;
 import com.example.moduleapi.exception.auction.RedisLockAcquisitionException;
 import com.example.moduleapi.exception.auction.RedisLockInterruptedException;
+import com.example.moduleapi.service.point.PointService;
 import com.example.moduleapi.service.product.ProductFacade;
 import com.example.moduledomain.domain.user.CustomUserDetails;
 import org.redisson.api.RLock;
@@ -25,12 +27,14 @@ public class AuctionService {
     private final HighestBidSseNotificationService bidSseNotificationService;
     private final RedissonClient redissonClient;
     private final KafkaProducerService kafkaProducerService;
+    private final PointService pointService;
 
-    public AuctionService(ProductFacade productFacade, HighestBidSseNotificationService bidSseNotificationService, RedissonClient redissonClient, KafkaProducerService kafkaProducerService) {
+    public AuctionService(ProductFacade productFacade, HighestBidSseNotificationService bidSseNotificationService, RedissonClient redissonClient, KafkaProducerService kafkaProducerService, PointService pointService) {
         this.productFacade = productFacade;
         this.bidSseNotificationService = bidSseNotificationService;
         this.redissonClient = redissonClient;
         this.kafkaProducerService = kafkaProducerService;
+        this.pointService = pointService;
     }
 
     @Transactional
@@ -70,10 +74,11 @@ private Long processBid(CustomUserDetails user, BidRequest bidRequest, Long prod
             return updateRedisBidData(user, highestBidMap, bidRequest, productId);
         }
         if (bidRequest.getBiddingPrice() <= userIdAndCurrentPrice.getSecond()) {
+            pointService.rollbackPoint(user.getUser().getId(), bidRequest.getBiddingPrice());
             throw new BiddingFailException(user.getUser().getUserId(), bidRequest.getBiddingPrice(), productId);
         }
 
-        //updateRedisBidData(user, highestBidMap, bidRequest, productId);
+        pointService.rollbackPoint(userIdAndCurrentPrice.getFirst(), userIdAndCurrentPrice.getSecond().intValue());
         return updateRedisBidData(user, highestBidMap, bidRequest, productId);
     }
 
@@ -83,6 +88,9 @@ private void isBiddingAvailable(CustomUserDetails user, BidRequest bidRequest, L
         if (biddingRequestTime.isAfter(product.getCloseDate())) {
             throw new BiddingFailException(user.getUser().getUserId(), bidRequest.getBiddingPrice(), productId);
         }
+
+        PointAmount pointAmount = new PointAmount(bidRequest.getBiddingPrice());
+        pointService.deductPoint(user, pointAmount);
     }
 
     private Long updateRedisBidData(CustomUserDetails user, RMap<Long, Pair<Long, Long>> bidMap, BidRequest bidRequest,

module-api/src/main/java/com/example/moduleapi/service/point/PointService.java

@@ -0,0 +1,53 @@
+package com.example.moduleapi.service.point;
+
+import com.example.moduleapi.controller.request.point.PointAmount;
+import com.example.moduleapi.exception.point.PointDeductionFailedException;
+import com.example.moduledomain.domain.point.Point;
+import com.example.moduledomain.domain.user.CustomUserDetails;
+import com.example.moduledomain.domain.user.User;
+import com.example.moduledomain.repository.user.PointRepository;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+public class PointService {
+    private final PointRepository pointRepository;
+
+    public PointService(PointRepository pointRepository) {
+        this.pointRepository = pointRepository;
+    }
+
+    // 포인트 충전
+    @Transactional
+    public int chargePoint(CustomUserDetails userDetails, PointAmount pointAmount) {
+        User user = userDetails.getUser();
+        Point point = pointRepository.findByUserId(user.getId());
+        point.plus(pointAmount.getAmount());
+        return point.getAmount();
+    }
+
+    // 포인트 차감
+    @Transactional
+    public int deductPoint(CustomUserDetails userDetails, PointAmount pointAmount) {
+        User user = userDetails.getUser();
+        Point point = pointRepository.findByUserId(user.getId());
+
+        validateDeductPoint(pointAmount, user, point);
+
+        point.minus(pointAmount.getAmount());
+        return point.getAmount();
+    }
+
+    // 포인트 롤백
+    @Transactional
+    public void rollbackPoint(Long userId, int plusAmount) {
+        Point point = pointRepository.findByUserId(userId);
+        point.plus(plusAmount);
+    }
+
+    private static void validateDeductPoint(PointAmount pointAmount, User user, Point point) {
+        if (point.getAmount() < pointAmount.getAmount()) {
+            throw new PointDeductionFailedException(user.getId());
+        }
+    }
+}

module-api/src/main/java/com/example/moduleapi/service/user/UserService.java

@@ -7,7 +7,9 @@
 import com.example.moduleapi.exception.user.DuplicatedUserIdException;
 import com.example.moduleapi.exception.user.NotFoundUserException;
 import com.example.moduleapi.exception.user.UnauthorizedUserException;
+import com.example.moduledomain.domain.point.Point;
 import com.example.moduledomain.domain.user.User;
+import com.example.moduledomain.repository.user.PointRepository;
 import com.example.moduledomain.repository.user.UserRepository;
 import com.google.common.base.Preconditions;
 import org.springframework.security.core.userdetails.UserDetails;
@@ -20,10 +22,12 @@
 public class UserService {
 
     private final UserRepository userRepository;
+    private final PointRepository pointRepository;
     private final BCryptPasswordEncoder bCryptPasswordEncoder;
 
-    public UserService(UserRepository userRepository, BCryptPasswordEncoder bCryptPasswordEncoder) {
+    public UserService(UserRepository userRepository, PointRepository pointRepository, BCryptPasswordEncoder bCryptPasswordEncoder) {
         this.userRepository = userRepository;
+        this.pointRepository = pointRepository;
         this.bCryptPasswordEncoder = bCryptPasswordEncoder;
     }
 
@@ -37,6 +41,11 @@ public UserResponse join(UserSaveRequest userSaveRequest) {
         user.updateEncodedPassword(encodedPassword);
 
         User savedUser = userRepository.save(user);
+        Point point = Point.builder()
+                .userId(user.getId())
+                .amount(0)
+                .build();
+        pointRepository.save(point);
         return UserResponse.from(savedUser);
     }
 

module-api/src/test/groovy/com/example/moduleapi/fixture/point/PointFixtures.groovy

@@ -0,0 +1,14 @@
+package com.example.moduleapi.fixture.point
+
+import com.example.moduledomain.domain.point.Point
+
+class PointFixtures {
+    static Point createPoint(Map map = [:]) {
+        return Point.builder()
+                .userId(map.getOrDefault("userId", 1L) as Long)
+                .amount(map.getOrDefault("amount", 0) as int)
+                .build()
+    }
+
+}
+

module-api/src/test/groovy/com/example/moduleapi/fixture/UserFixtures/UserFixtures.groovy → module-api/src/test/groovy/com/example/moduleapi/fixture/user/UserFixtures.groovy

@@ -1,4 +1,4 @@
-package com.example.moduleapi.fixture.UserFixtures
+package com.example.moduleapi.fixture.user
 
 import com.example.moduledomain.domain.user.User
 

module-api/src/test/groovy/com/example/moduleapi/service/auction/AuctionServiceTest.groovy

@@ -4,8 +4,10 @@ import com.example.moduleapi.controller.request.auction.BidRequest
 import com.example.moduleapi.controller.response.product.ProductFindResponse
 import com.example.moduleapi.exception.auction.BiddingFailException
 import com.example.moduleapi.exception.auction.RedisLockAcquisitionException
-import com.example.moduleapi.fixture.UserFixtures.UserFixtures
+import com.example.moduleapi.exception.point.PointDeductionFailedException
 import com.example.moduleapi.fixture.product.ProductFixtures
+import com.example.moduleapi.fixture.user.UserFixtures
+import com.example.moduleapi.service.point.PointService
 import com.example.moduleapi.service.product.ProductFacade
 import com.example.moduledomain.domain.user.CustomUserDetails
 import com.example.moduledomain.domain.user.User
@@ -23,7 +25,9 @@ class AuctionServiceTest extends Specification {
 
     ProductFacade productFacade = Mock()
     HighestBidSseNotificationService bidSseNotificationService = Mock()
-    AuctionService auctionService = new AuctionService(productFacade, bidSseNotificationService, redissonClient)
+    KafkaProducerService kafkaProducerService = Mock()
+    PointService pointService = Mock()
+    AuctionService auctionService = new AuctionService(productFacade, bidSseNotificationService, redissonClient, kafkaProducerService, pointService)
 
     def "경매 입찰 성공"() {
         given:
@@ -143,4 +147,47 @@ class AuctionServiceTest extends Specification {
         def e = thrown(BiddingFailException.class)
         e.message == String.format("입찰자: %s, 입찰가: %d, 입찰 상품: %d - 입찰 실패.", user.getUserId(), bidRequest.getBiddingPrice(), 1L)
     }
+
+    def "포인트 부족으로 인한 입찰 실패"() {
+        given:
+        // Redisson Lock 관련
+        RLock lock = Mock()
+        redissonClient.getLock(_) >> lock
+        lock.tryLock(5, 10, TimeUnit.SECONDS) >> true
+        lock.isHeldByCurrentThread() >> true
+
+        // 입찰 제시
+        BidRequest bidRequest = new BidRequest(5000)
+
+        // User 관련
+        User user = UserFixtures.createUser()
+        user.id = 1L
+        CustomUserDetails customUserDetails = Mock()
+        customUserDetails.getUser() >> user
+
+        // Redisson Map 관련
+        RMap<Long, Pair<Long, Long>> highestBidMap = Mock()
+        Pair<Long, Long> userIdAndCurrentPrice = new Pair<>(1L, 7000L)
+        highestBidMap.get(1L) >> userIdAndCurrentPrice
+        userIdAndCurrentPrice.getSecond() >> 7000L
+        redissonClient.getMap(_) >> highestBidMap
+
+        // Product 관련
+        ProductFindResponse productFindResponse = ProductFixtures.createProductFindResponse()
+        productFacade.findById(1L) >> productFindResponse
+
+        // Point
+        pointService.deductPoint(customUserDetails, _) >> { throw new PointDeductionFailedException(1L) }
+
+        when:
+        auctionService.biddingPrice(customUserDetails, bidRequest, 1L)
+
+        then:
+        def e = thrown(PointDeductionFailedException.class)
+        e.message == 1L + ": 포인트가 부족합니다."
+        0 * kafkaProducerService.publishAuctionPriceChangeNotification(_, _)
+        0 * bidSseNotificationService.sendToAllUsers(_, _, _)
+    }
+
+
 }

module-api/src/test/groovy/com/example/moduleapi/service/file/LocalFileServiceTest.groovy

@@ -1,7 +1,7 @@
 package com.example.moduleapi.service.file
 
-import com.example.moduleapi.fixture.UserFixtures.UserFixtures
 import com.example.moduleapi.fixture.product.ProductFixtures
+import com.example.moduleapi.fixture.user.UserFixtures
 import com.example.moduledomain.domain.product.Product
 import com.example.moduledomain.domain.user.User
 import spock.lang.Specification