[FIX] 중복 초대 방지 로직 추가

src/main/java/com/tiki/server/email/emailsender/service/EmailSenderService.java

@@ -1,5 +1,6 @@
 package com.tiki.server.email.emailsender.service;
 
+import static com.tiki.server.email.teaminvitation.messages.ErrorCode.ALREADY_INVITED;
 import static com.tiki.server.memberteammanager.message.ErrorCode.CONFLICT_TEAM_MEMBER;
 
 import com.tiki.server.common.entity.Position;
@@ -9,6 +10,7 @@
 import com.tiki.server.email.teaminvitation.adapter.TeamInvitationFinder;
 import com.tiki.server.email.teaminvitation.adapter.TeamInvitationSaver;
 import com.tiki.server.email.teaminvitation.entity.TeamInvitation;
+import com.tiki.server.email.teaminvitation.exception.TeamInvitationException;
 import com.tiki.server.email.verification.adapter.EmailVerificationSaver;
 import com.tiki.server.email.verification.domain.EmailVerification;
 import com.tiki.server.member.adapter.MemberFinder;
@@ -64,6 +66,7 @@ public void createTeamInvitation(final TeamInvitationCreateServiceRequest reques
         memberTeamManager.checkMemberAccessible(Position.ADMIN);
         Team team = teamFinder.findById(request.teamId());
         checkIsPresentTeamMember(request);
+        checkDuplicateInvitation(request);
         TeamInvitation teamInvitation = teamInvitationSaver.createTeamInvitation(
                 TeamInvitation.of(memberTeamManager.getName(), request.teamId(), request.targetEmail()));
         mailSender.sendTeamInvitationMail(
@@ -75,6 +78,14 @@ public void createTeamInvitation(final TeamInvitationCreateServiceRequest reques
         );
     }
 
+    private void checkDuplicateInvitation(final TeamInvitationCreateServiceRequest request) {
+        teamInvitationFinder.presentByTeamIdAndEmail(request.teamId(), request.targetEmail()
+                )
+                .ifPresent(invitation -> {
+                    throw new TeamInvitationException(ALREADY_INVITED);
+                });
+    }
+
     private void checkIsPresentTeamMember(final TeamInvitationCreateServiceRequest request) {
         if (memberTeamManagerFinder.existsByTeamIdAndMemberEmail(request.teamId(), request.targetEmail())) {
             throw new MemberTeamManagerException(CONFLICT_TEAM_MEMBER);

src/main/java/com/tiki/server/email/teaminvitation/adapter/TeamInvitationFinder.java

@@ -1,14 +1,17 @@
 package com.tiki.server.email.teaminvitation.adapter;
 
 import com.tiki.server.common.support.RepositoryAdapter;
+import com.tiki.server.email.Email;
 import com.tiki.server.email.teaminvitation.exception.TeamInvitationException;
 import com.tiki.server.email.teaminvitation.entity.TeamInvitation;
 import com.tiki.server.email.teaminvitation.repository.TeamInvitationRepository;
+import java.util.Optional;
 import lombok.RequiredArgsConstructor;
 
 import java.time.LocalDate;
 import java.util.List;
 
+import static com.tiki.server.email.teaminvitation.messages.ErrorCode.ALREADY_INVITED;
 import static com.tiki.server.email.teaminvitation.messages.ErrorCode.INVALID_TEAM_INVITATION;
 
 @RepositoryAdapter
@@ -29,4 +32,8 @@ public List<TeamInvitation> findByExpiredDate(final LocalDate expiredDate) {
     public List<TeamInvitation> findAllByTeamId(final long teamId) {
         return teamInvitationRepository.findAllByTeamId(teamId);
     }
+
+    public Optional<TeamInvitation> presentByTeamIdAndEmail(final long teamId, final Email targetEmail){
+        return teamInvitationRepository.findByTeamIdAndEmail(teamId, targetEmail);
+    }
 }

src/main/java/com/tiki/server/email/teaminvitation/messages/ErrorCode.java

@@ -11,6 +11,7 @@
 @AllArgsConstructor
 public enum ErrorCode {
 
+    ALREADY_INVITED(BAD_REQUEST, "이미 초대한 이메일 입니다."),
     ALREADY_INVITED_MEMBER(BAD_REQUEST, "이미 존재하는 팀원입니다."),
     NOT_MATCHED_MEMBER_INFORM(BAD_REQUEST, "일치하지 않은 초대정보 입니다."),
     INVALID_TEAM_INVITATION(NOT_FOUND, "존재하지 않거나 만료된 초대정보입니다.");

src/main/java/com/tiki/server/email/teaminvitation/repository/TeamInvitationRepository.java

@@ -1,6 +1,8 @@
 package com.tiki.server.email.teaminvitation.repository;
 
+import com.tiki.server.email.Email;
 import com.tiki.server.email.teaminvitation.entity.TeamInvitation;
+import java.util.Optional;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import java.time.LocalDate;
@@ -11,4 +13,6 @@ public interface TeamInvitationRepository extends JpaRepository<TeamInvitation,
     List<TeamInvitation> findByExpiredDateBefore(final LocalDate expiredDate);
 
     List<TeamInvitation> findAllByTeamId(final long teamId);
+
+    Optional<TeamInvitation> findByTeamIdAndEmail(final long teamId, final Email email);
 }