feat(model): 为 Comment 和 PointHistory 实体添加逻辑删除功能

backend/src/main/java/com/openisle/model/Comment.java

@@ -5,6 +5,8 @@ import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
 import org.hibernate.annotations.CreationTimestamp;
+import org.hibernate.annotations.SQLDelete;
+import org.hibernate.annotations.Where;
 
 import java.time.LocalDateTime;
 
@@ -13,6 +15,8 @@ import java.time.LocalDateTime;
 @Setter
 @NoArgsConstructor
 @Table(name = "comments")
+@SQLDelete(sql = "UPDATE comments SET deleted_at = CURRENT_TIMESTAMP(6) WHERE id = ?")
+@Where(clause = "deleted_at IS NULL")
 public class Comment {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -41,4 +45,7 @@ public class Comment {
     @Column
     private LocalDateTime pinnedAt;
 
+    @Column(name = "deleted_at")
+    private LocalDateTime deletedAt;
+
 }

backend/src/main/java/com/openisle/model/PointHistory.java

@@ -4,6 +4,8 @@ import jakarta.persistence.*;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
+import org.hibernate.annotations.SQLDelete;
+import org.hibernate.annotations.Where;
 
 import java.time.LocalDateTime;
 
@@ -13,6 +15,8 @@ import java.time.LocalDateTime;
 @Setter
 @NoArgsConstructor
 @Table(name = "point_histories")
+@SQLDelete(sql = "UPDATE point_histories SET deleted_at = CURRENT_TIMESTAMP(6) WHERE id = ?")
+@Where(clause = "deleted_at IS NULL")
 public class PointHistory {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -46,4 +50,7 @@ public class PointHistory {
 
     @Column(name = "created_at", nullable = false)
     private LocalDateTime createdAt;
+
+    @Column(name = "deleted_at")
+    private LocalDateTime deletedAt;
 }

backend/src/main/java/com/openisle/repository/PointHistoryRepository.java

@@ -2,6 +2,7 @@ package com.openisle.repository;
 
 import com.openisle.model.PointHistory;
 import com.openisle.model.User;
+import com.openisle.model.Comment;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import java.time.LocalDateTime;
@@ -12,4 +13,6 @@ public interface PointHistoryRepository extends JpaRepository<PointHistory, Long
     long countByUser(User user);
 
     List<PointHistory> findByUserAndCreatedAtAfterOrderByCreatedAtDesc(User user, LocalDateTime createdAt);
+    
+    List<PointHistory> findByComment(Comment comment);
 }

backend/src/main/java/com/openisle/service/CommentService.java

@@ -11,6 +11,7 @@ import com.openisle.repository.UserRepository;
 import com.openisle.repository.ReactionRepository;
 import com.openisle.repository.CommentSubscriptionRepository;
 import com.openisle.repository.NotificationRepository;
+import com.openisle.repository.PointHistoryRepository;
 import com.openisle.service.NotificationService;
 import com.openisle.service.SubscriptionService;
 import com.openisle.model.Role;
@@ -37,6 +38,7 @@ public class CommentService {
     private final ReactionRepository reactionRepository;
     private final CommentSubscriptionRepository commentSubscriptionRepository;
     private final NotificationRepository notificationRepository;
+    private final PointHistoryRepository pointHistoryRepository;
     private final ImageUploader imageUploader;
 
     @Transactional
@@ -235,10 +237,14 @@ public class CommentService {
         for (Comment c : replies) {
             deleteCommentCascade(c);
         }
+        // 逻辑删除相关的积分历史记录
+        pointHistoryRepository.findByComment(comment).forEach(pointHistoryRepository::delete);
+        // 删除其他相关数据
         reactionRepository.findByComment(comment).forEach(reactionRepository::delete);
         commentSubscriptionRepository.findByComment(comment).forEach(commentSubscriptionRepository::delete);
         notificationRepository.deleteAll(notificationRepository.findByComment(comment));
         imageUploader.removeReferences(imageUploader.extractUrls(comment.getContent()));
+        // 逻辑删除评论
         commentRepository.delete(comment);
         log.debug("deleteCommentCascade removed comment {}", comment.getId());
     }