Feat: HashTage 추가, 인원 제한 exception 추가 (#147)

backend/chatroom-service/src/main/java/com/tadak/chatroomservice/domain/chatmember/service/ChatMemberService.java

@@ -8,12 +8,15 @@
 import com.tadak.chatroomservice.domain.chatroom.exception.AlreadyKickedException;
 import com.tadak.chatroomservice.domain.chatroom.exception.CannotTransferOwnershipException;
 import com.tadak.chatroomservice.domain.chatroom.exception.NotFoundChatMemberException;
+import com.tadak.chatroomservice.domain.chatroom.exception.OverParticipationException;
 import com.tadak.chatroomservice.global.error.ErrorCode;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.Objects;
+
 @Service
 @Slf4j
 @RequiredArgsConstructor
@@ -29,10 +32,15 @@ public EnterChatMemberResponse enterMember(ChatRoom chatRoom, String username) {
                 .username(username)
                 .build();
 
-        chatMemberRepository.save(chatMember);
+        if (Objects.equals(chatRoom.getCapacity(), chatRoom.getParticipation())){
+            throw new OverParticipationException(ErrorCode.OVER_CHATROOM_PARTICIPATION_ERROR);
+        }
+
         // 채팅방 인원 증가
         chatRoom.increaseParticipation();
 
+        chatMemberRepository.save(chatMember);
+
         return EnterChatMemberResponse.of(chatMember, chatRoom.getParticipation());
     }
 

backend/chatroom-service/src/main/java/com/tadak/chatroomservice/domain/chatroom/dto/response/ChatRoomResponse.java

@@ -15,6 +15,7 @@ public class ChatRoomResponse {
     private Long roomId;
     private String roomName;
     private String description;
+    private String hashtag;
     private Integer participation;
     private Integer capacity;
     private String owner;
@@ -24,6 +25,7 @@ public static ChatRoomResponse from(ChatRoom chatRoom) {
                 .roomId(chatRoom.getId())
                 .roomName(chatRoom.getRoomName())
                 .description(chatRoom.getDescription())
+                .hashtag(chatRoom.getHashtag())
                 .participation(chatRoom.getParticipation())
                 .capacity(chatRoom.getCapacity())
                 .owner(chatRoom.getOwner())

backend/chatroom-service/src/main/java/com/tadak/chatroomservice/domain/chatroom/exception/OverParticipationException.java

@@ -0,0 +1,11 @@
+package com.tadak.chatroomservice.domain.chatroom.exception;
+
+import com.tadak.chatroomservice.global.error.ErrorCode;
+import com.tadak.chatroomservice.global.error.common.BusinessException;
+
+public class OverParticipationException extends BusinessException {
+
+    public OverParticipationException(ErrorCode errorCode) {
+        super(errorCode);
+    }
+}

backend/chatroom-service/src/main/java/com/tadak/chatroomservice/global/error/ErrorCode.java

@@ -20,6 +20,7 @@ public enum ErrorCode {
     NOT_OWNER_ERROR(1301, "G1300", "방장 권한이 없습니다."),
     KICKED_MEMBER_ERROR(1302, "G1300", "현재 강퇴당한 채팅 방 입니다."),
     CANNOT_TRANSFER_OWNER_ERROR(1303, "G1300", "해당 유저는 강퇴당한 유저이기 떄문에 방장 위임을 할 수 없습니다."),
+    OVER_CHATROOM_PARTICIPATION_ERROR(1304, "G1300", "해당 채팅 방은 인원이 가득차 있습니다."),
 
     /**
      * 1400 ~ 1499