[BE] 행사 참여 인원 이름 변경 기능 구현

server/src/main/java/server/haengdong/application/EventService.java

@@ -7,6 +7,7 @@
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import server.haengdong.application.request.EventAppRequest;
+import server.haengdong.application.request.MemberUpdateAppRequest;
 import server.haengdong.application.response.ActionAppResponse;
 import server.haengdong.application.response.EventAppResponse;
 import server.haengdong.application.response.EventDetailAppResponse;
@@ -98,4 +99,22 @@ public MembersAppResponse findAllMembers(String token) {
 
         return new MembersAppResponse(memberNames);
     }
+
+    @Transactional
+    public void updateMember(String token, String memberName, MemberUpdateAppRequest request) {
+        Event event = eventRepository.findByToken(token)
+                .orElseThrow(() -> new HaengdongException(HaengdongErrorCode.NOT_FOUND_EVENT));
+        String updatedMemberName = request.name();
+        validateMemberNameUnique(event, updatedMemberName);
+
+        memberActionRepository.findAllByAction_EventAndMemberName(event, memberName)
+                .forEach(memberAction -> memberAction.updateMemberName(updatedMemberName));
+    }
+
+    private void validateMemberNameUnique(Event event, String updatedMemberName) {
+        boolean isMemberNameExist = memberActionRepository.existsByAction_EventAndMemberName(event, updatedMemberName);
+        if (isMemberNameExist) {
+            throw new HaengdongException(HaengdongErrorCode.DUPLICATED_MEMBER_NAME);
+        }
+    }
 }

server/src/main/java/server/haengdong/application/request/MemberUpdateAppRequest.java

@@ -0,0 +1,4 @@
+package server.haengdong.application.request;
+
+public record MemberUpdateAppRequest(String name) {
+}

server/src/main/java/server/haengdong/domain/action/MemberAction.java

@@ -39,8 +39,8 @@ public MemberAction(Action action, String memberName, MemberActionStatus status,
         this.memberGroupId = memberGroupId;
     }
 
-    public boolean isSameName(String name) {
-        return memberName.equals(name);
+    public void updateMemberName(String memberName) {
+        this.memberName = memberName;
     }
 
     public boolean isIn() {

server/src/main/java/server/haengdong/domain/action/MemberActionRepository.java

@@ -39,4 +39,8 @@ public interface MemberActionRepository extends JpaRepository<MemberAction, Long
             where m.memberName = :memberName and m.action.sequence >= :sequence
             """)
     void deleteAllByMemberNameAndMinSequence(String memberName, Long sequence);
+
+    List<MemberAction> findAllByAction_EventAndMemberName(Event event, String memberName);
+
+    boolean existsByAction_EventAndMemberName(Event event, String updatedMemberName);
 }

server/src/main/java/server/haengdong/exception/HaengdongErrorCode.java

@@ -7,14 +7,15 @@ public enum HaengdongErrorCode {
     BAD_REQUEST("R_001", "잘못된 요청입니다."),
     NO_RESOURCE_REQUEST("R_002", "잘못된 엔드포인트입니다."),
     MESSAGE_NOT_READABLE("R_003", "읽을 수 없는 요청 형식입니다."),
+    INTERNAL_SERVER_ERROR("S_001", "서버 내부에서 에러가 발생했습니다."),
+    DUPLICATED_MEMBER_NAME("EV_001", "중복된 행사 참여 인원 이름이 존재합니다."),
     NOT_FOUND_EVENT("EV_400", "존재하지 않는 행사입니다."),
     DUPLICATED_MEMBER_ACTION("MA_001", "중복된 인원이 존재합니다."),
     INVALID_MEMBER_IN_ACTION("MA_002", "현재 참여하고 있는 인원이 존재합니다."),
     INVALID_MEMBER_OUT_ACTION("MA_003", "현재 참여하고 있지 않는 인원이 존재합니다."),
     NOT_FOUND_MEMBER_ACTION("MA_400", "존재하지 않는 멤버 액션입니다."),
     NOT_FOUND_BILL_ACTION("BA_400", "존재하지 않는 지출 액션입니다."),
     NOT_FOUND_ACTION("AC_400", "존재하지 않는 액션입니다."),
-    INTERNAL_SERVER_ERROR("S_001", "서버 내부에서 에러가 발생했습니다."),
     ;
 
     private final String code;

server/src/main/java/server/haengdong/presentation/EventController.java

@@ -6,10 +6,12 @@
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RestController;
 import server.haengdong.application.EventService;
 import server.haengdong.presentation.request.EventSaveRequest;
+import server.haengdong.presentation.request.MemberUpdateRequest;
 import server.haengdong.presentation.response.EventDetailResponse;
 import server.haengdong.presentation.response.EventResponse;
 import server.haengdong.presentation.response.MembersResponse;
@@ -48,4 +50,15 @@ public ResponseEntity<MembersResponse> findAllMembers(@PathVariable("eventId") S
 
         return ResponseEntity.ok(response);
     }
+
+    @PutMapping("/api/events/{eventId}/members/{memberName}")
+    public ResponseEntity<Void> updateMember(
+            @PathVariable("eventId") String token,
+            @PathVariable("memberName") String memberName,
+            @Valid @RequestBody MemberUpdateRequest request
+    ) {
+        eventService.updateMember(token, memberName, request.toAppRequest());
+
+        return ResponseEntity.ok().build();
+    }
 }

server/src/main/java/server/haengdong/presentation/request/MemberUpdateRequest.java

@@ -0,0 +1,13 @@
+package server.haengdong.presentation.request;
+
+import jakarta.validation.constraints.NotBlank;
+import server.haengdong.application.request.MemberUpdateAppRequest;
+
+public record MemberUpdateRequest(
+        @NotBlank String name
+) {
+
+    public MemberUpdateAppRequest toAppRequest() {
+        return new MemberUpdateAppRequest(name);
+    }
+}

server/src/test/java/server/haengdong/application/EventServiceTest.java

@@ -2,6 +2,7 @@
 
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
 import static org.assertj.core.api.Assertions.tuple;
 import static org.mockito.BDDMockito.given;
 import static server.haengdong.domain.action.MemberActionStatus.IN;
@@ -15,6 +16,7 @@
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.mock.mockito.MockBean;
 import server.haengdong.application.request.EventAppRequest;
+import server.haengdong.application.request.MemberUpdateAppRequest;
 import server.haengdong.application.response.ActionAppResponse;
 import server.haengdong.application.response.EventAppResponse;
 import server.haengdong.application.response.EventDetailAppResponse;
@@ -28,6 +30,7 @@
 import server.haengdong.domain.event.Event;
 import server.haengdong.domain.event.EventRepository;
 import server.haengdong.domain.event.EventTokenProvider;
+import server.haengdong.exception.HaengdongException;
 
 @SpringBootTest
 class EventServiceTest {
@@ -131,4 +134,50 @@ void findAllMembersTest() {
 
         assertThat(membersAppResponse.memberNames()).containsExactlyInAnyOrder("토다리", "쿠키");
     }
+
+    @DisplayName("행사 참여 인원의 이름을 변경한다.")
+    @Test
+    void updateMember() {
+        String token = "행동대장 회식";
+        Event event = new Event("행동대장 회식", token);
+        MemberAction memberAction1 = new MemberAction(new Action(event, 1L), "토다리", IN, 1L);
+        MemberAction memberAction2 = new MemberAction(new Action(event, 2L), "쿠키", IN, 1L);
+        MemberAction memberAction3 = new MemberAction(new Action(event, 3L), "웨디", IN, 2L);
+        MemberAction memberAction4 = new MemberAction(new Action(event, 4L), "쿠키", OUT, 3L);
+        MemberAction memberAction5 = new MemberAction(new Action(event, 5L), "쿠키", IN, 4L);
+        MemberAction memberAction6 = new MemberAction(new Action(event, 6L), "쿠키", OUT, 5L);
+        eventRepository.save(event);
+        memberActionRepository.saveAll(List.of(
+                memberAction1, memberAction2, memberAction3, memberAction4, memberAction5, memberAction6
+        ));
+
+        eventService.updateMember(token, "쿠키", new MemberUpdateAppRequest("쿡쿡"));
+
+        List<MemberAction> foundMemberActions = memberActionRepository.findAllByEvent(event);
+        assertThat(foundMemberActions)
+                .extracting(MemberAction::getId, MemberAction::getMemberName)
+                .contains(
+                        tuple(memberAction1.getId(), "토다리"),
+                        tuple(memberAction2.getId(), "쿡쿡"),
+                        tuple(memberAction3.getId(), "웨디"),
+                        tuple(memberAction4.getId(), "쿡쿡"),
+                        tuple(memberAction5.getId(), "쿡쿡"),
+                        tuple(memberAction6.getId(), "쿡쿡")
+                );
+    }
+
+    @DisplayName("참여 인원 이름을 이미 존재하는 행사 참여 인원과 동일한 이름으로 변경할 수 없다.")
+    @Test
+    void updateMember1() {
+        String token = "행동대장 회식";
+        Event event = new Event("행동대장 회식", token);
+        MemberAction memberAction1 = new MemberAction(new Action(event, 1L), "토다리", IN, 1L);
+        MemberAction memberAction2 = new MemberAction(new Action(event, 2L), "쿠키", IN, 1L);
+        MemberAction memberAction3 = new MemberAction(new Action(event, 3L), "웨디", IN, 2L);
+        eventRepository.save(event);
+        memberActionRepository.saveAll(List.of(memberAction1, memberAction2, memberAction3));
+
+        assertThatThrownBy(() -> eventService.updateMember(token, "쿠키", new MemberUpdateAppRequest("토다리")))
+                .isInstanceOf(HaengdongException.class);
+    }
 }

server/src/test/java/server/haengdong/presentation/EventControllerTest.java

@@ -5,6 +5,7 @@
 import static org.mockito.BDDMockito.given;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.put;
 import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
@@ -24,6 +25,7 @@
 import server.haengdong.application.response.EventDetailAppResponse;
 import server.haengdong.application.response.MembersAppResponse;
 import server.haengdong.presentation.request.EventSaveRequest;
+import server.haengdong.presentation.request.MemberUpdateRequest;
 
 @WebMvcTest(EventController.class)
 class EventControllerTest {
@@ -80,4 +82,18 @@ void findAllMembersTest() throws Exception {
                 .andExpect(jsonPath("$.memberNames[0]").value("토다리"))
                 .andExpect(jsonPath("$.memberNames[1]").value("쿠키"));
     }
+
+    @DisplayName("행사 참여 인원의 이름을 수정한다.")
+    @Test
+    void updateMember() throws Exception {
+        String token = "TOKEN";
+        MemberUpdateRequest memberUpdateRequest = new MemberUpdateRequest("변경된 이름");
+        String requestBody = objectMapper.writeValueAsString(memberUpdateRequest);
+
+        mockMvc.perform(put("/api/events/{eventId}/members/{memberName}", token, "변경 전 이름")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(requestBody))
+                .andDo(print())
+                .andExpect(status().isOk());
+    }
 }