feat-be: 지원서 작성 완료 시 이메일 발송 기능 (#960)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Leetaehoon <[email protected]>

backend/src/main/java/com/cruru/applyform/domain/event/ApplyFormEvent.java

@@ -0,0 +1,8 @@
+package com.cruru.applyform.domain.event;
+
+import com.cruru.applicant.domain.Applicant;
+import com.cruru.applyform.domain.ApplyForm;
+import com.cruru.club.domain.Club;
+
+public record ApplyFormEvent(Club club, ApplyForm applyForm, Applicant applicant) {
+}

backend/src/main/java/com/cruru/applyform/domain/event/ApplyFormEventListener.java

@@ -0,0 +1,44 @@
+package com.cruru.applyform.domain.event;
+
+import com.cruru.applicant.domain.Applicant;
+import com.cruru.applyform.domain.ApplyForm;
+import com.cruru.club.domain.Club;
+import com.cruru.email.service.EmailService;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Component;
+import org.springframework.transaction.event.TransactionPhase;
+import org.springframework.transaction.event.TransactionalEventListener;
+
+@Component
+@RequiredArgsConstructor
+@Slf4j
+public class ApplyFormEventListener {
+
+    private final EmailService emailService;
+
+    @Async
+    @TransactionalEventListener(phase = TransactionPhase.AFTER_COMMIT)
+    public void handleApplyFormEvent(ApplyFormEvent event) {
+
+        Club club = event.club();
+        ApplyForm applyForm = event.applyForm();
+        Applicant applicant = event.applicant();
+
+        String subject = "지원 완료 안내";
+        String content = String.format(
+                "안녕하세요, %s님.\n\n%s 지원서가 성공적으로 제출되었습니다.\n\n감사합니다.",
+                applicant.getName(),
+                applyForm.getTitle()
+        );
+
+        emailService.send(
+                club,
+                applicant,
+                subject,
+                content,
+                null
+        );
+    }
+}

backend/src/main/java/com/cruru/applyform/facade/ApplyFormFacade.java

@@ -8,9 +8,11 @@
 import com.cruru.applyform.controller.request.ApplyFormWriteRequest;
 import com.cruru.applyform.controller.response.ApplyFormResponse;
 import com.cruru.applyform.domain.ApplyForm;
+import com.cruru.applyform.domain.event.ApplyFormEvent;
 import com.cruru.applyform.exception.badrequest.ApplyFormSubmitOutOfPeriodException;
 import com.cruru.applyform.exception.badrequest.PersonalDataCollectDisagreeException;
 import com.cruru.applyform.service.ApplyFormService;
+import com.cruru.club.domain.Club;
 import com.cruru.dashboard.domain.Dashboard;
 import com.cruru.process.domain.Process;
 import com.cruru.process.service.ProcessService;
@@ -22,6 +24,8 @@
 import java.util.List;
 import java.util.Objects;
 import lombok.RequiredArgsConstructor;
+import org.hibernate.Hibernate;
+import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -35,6 +39,7 @@ public class ApplyFormFacade {
     private final ProcessService processService;
     private final ApplicantService applicantService;
     private final AnswerService answerService;
+    private final ApplicationEventPublisher applicationEventPublisher;
     private final Clock clock;
 
     public ApplyFormResponse readApplyFormById(long applyFormId) {
@@ -68,6 +73,10 @@ public void submit(long applyFormId, ApplyFormSubmitRequest request) {
             AnswerCreateRequest answerCreateRequest = getAnswerCreateRequest(question, answerCreateRequests);
             answerService.saveAnswerReplies(answerCreateRequest, question, applicant);
         }
+
+        Club club = dashboard.getClub();
+        Hibernate.initialize(club);
+        applicationEventPublisher.publishEvent(new ApplyFormEvent(club, applyForm, applicant));
     }
 
     private void validatePersonalDataCollection(ApplyFormSubmitRequest request) {