feat: 유저 밴 적용시 슬랙 알람 적용

Author: Kyoungwoong

src/main/java/org/myteam/server/chat/service/BanService.java

@@ -3,36 +3,47 @@
 import lombok.AllArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.myteam.server.chat.domain.Ban;
+import org.myteam.server.chat.domain.BanReason;
 import org.myteam.server.chat.dto.request.BanRequest;
 import org.myteam.server.chat.dto.response.BanResponse;
 import org.myteam.server.chat.repository.BanRepository;
 import org.myteam.server.global.exception.ErrorCode;
 import org.myteam.server.global.exception.PlayHiveException;
+import org.myteam.server.util.slack.service.SlackService;
 import org.springframework.stereotype.Service;
 
 import java.time.format.DateTimeFormatter;
+import java.util.stream.Collectors;
 
 @Slf4j
 @Service
 @AllArgsConstructor
 public class BanService {
 
     private final BanRepository banRepository;
+    private final SlackService slackService;
 
     /**
-     * TODO: 슬랙 알람 서비스 적용해야함.
      * 유저 밴 적용
      */
     public BanResponse banUser(BanRequest request) {
-        log.info("This user: {} has received a blocking request.", request.getUsername());
+        String username = request.getUsername();
+        log.info("This user: {} has received a blocking request.", username);
         // 이미 밴된 유저인지 확인
-        if (banRepository.existsByUsername(request.getUsername())) {
+        if (banRepository.existsByUsername(username)) {
             throw new PlayHiveException(ErrorCode.BAN_ALREADY_EXISTS);
         }
 
-        Ban ban = Ban.createBan(request.getUsername(), request.getReasons(), request.getMessage());
+        Ban ban = Ban.createBan(username, request.getReasons(), request.getMessage());
         Ban savedBan = banRepository.save(ban);
 
+        String reasons = request.getReasons()
+                .stream()
+                .map(BanReason::getReason)
+                .collect(Collectors.joining(", "));
+        String message = String.format("%s (차단 사유: %s)", username, reasons);
+        slackService.sendSlackNotification(message);
+
         return toBanResponse(savedBan);
     }