feat: alarm 생성 기능 구현

review request 알람 생성 시 활용
Related to: #4

src/main/java/com/_119/wepro/alarm/domain/Alarm.java

@@ -0,0 +1,51 @@
+package com._119.wepro.alarm.domain;
+
+import com._119.wepro.global.BaseEntity;
+import com._119.wepro.global.enums.AlarmType;
+import com._119.wepro.member.domain.Member;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor
+@Builder
+public class Alarm extends BaseEntity {
+
+  @Id
+  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  private Long id;
+
+  @ManyToOne(fetch = FetchType.LAZY)
+  @JoinColumn(name = "sender_id")
+  private Member sender;
+
+  @ManyToOne(fetch = FetchType.LAZY)
+  @JoinColumn(name = "receiver_id")
+  private Member receiver;
+
+  private Long targetId;
+
+  @Column(length = 50)
+  private String message;
+
+  @Enumerated(EnumType.STRING)
+  private AlarmType alarmType;
+
+  @Builder.Default
+  private boolean readFlag = false;
+}

src/main/java/com/_119/wepro/alarm/domain/repository/AlarmRepository.java

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+package com._119.wepro.alarm.domain.repository;
+
+import com._119.wepro.alarm.domain.Alarm;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface AlarmRepository extends JpaRepository<Alarm, Long> {
+
+}

src/main/java/com/_119/wepro/alarm/service/AlarmService.java

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+package com._119.wepro.alarm.service;
+
+import com._119.wepro.alarm.domain.Alarm;
+import com._119.wepro.alarm.domain.repository.AlarmRepository;
+import com._119.wepro.global.enums.AlarmType;
+import com._119.wepro.global.exception.RestApiException;
+import com._119.wepro.global.exception.errorcode.UserErrorCode;
+import com._119.wepro.member.domain.Member;
+import com._119.wepro.member.domain.repository.MemberRepository;
+import jakarta.transaction.Transactional;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class AlarmService {
+
+  private final MemberRepository memberRepository;
+  private final AlarmRepository alarmRepository;
+
+  @Transactional
+  public void createAlarm(Member sender, Long receiverId, AlarmType alarmType, Long targetId,
+      String content) {
+    Member receiver = memberRepository.findById(receiverId).orElseThrow(()
+        -> new RestApiException(UserErrorCode.USER_NOT_FOUND));
+    content = sender.getName() + content;
+
+    alarmRepository.save(Alarm.builder()
+        .sender(sender)
+        .receiver(receiver)
+        .alarmType(alarmType)
+        .message(content)
+        .readFlag(false)
+        .targetId(targetId)
+        .build()
+    );
+  }
+
+}

src/main/java/com/_119/wepro/global/enums/AlarmType.java

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+package com._119.wepro.global.enums;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum AlarmType {
+  REVIEW_REQUEST("리뷰 요청");
+
+  private final String description;
+}