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Add post and comment deletion

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This commit is contained in:
Tim
2025-07-11 17:24:48 +08:00
parent 216faeb496
commit f4af7a48c7
7 changed files with 139 additions and 3 deletions
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31
src/main/java/com/openisle/service/CommentService.java
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@@ -7,8 +7,12 @@ import com.openisle.model.NotificationType;
import com.openisle.repository.CommentRepository;
import com.openisle.repository.PostRepository;
import com.openisle.repository.UserRepository;
import com.openisle.repository.ReactionRepository;
import com.openisle.repository.CommentSubscriptionRepository;
import com.openisle.repository.NotificationRepository;
import com.openisle.service.NotificationService;
import com.openisle.service.SubscriptionService;
import com.openisle.model.Role;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
@@ -24,6 +28,9 @@ public class CommentService {
private final UserRepository userRepository;
private final NotificationService notificationService;
private final SubscriptionService subscriptionService;
private final ReactionRepository reactionRepository;
private final CommentSubscriptionRepository commentSubscriptionRepository;
private final NotificationRepository notificationRepository;
public Comment addComment(String username, Long postId, String content) {
User author = userRepository.findByUsername(username)
@@ -115,4 +122,28 @@ public class CommentService {
public java.util.List<Comment> getCommentsByIds(java.util.List<Long> ids) {
return commentRepository.findAllById(ids);
}
@org.springframework.transaction.annotation.Transactional
public void deleteComment(String username, Long id) {
User user = userRepository.findByUsername(username)
.orElseThrow(() -> new IllegalArgumentException("User not found"));
Comment comment = commentRepository.findById(id)
.orElseThrow(() -> new IllegalArgumentException("Comment not found"));
if (!user.getId().equals(comment.getAuthor().getId()) && user.getRole() != Role.ADMIN) {
throw new IllegalArgumentException("Unauthorized");
}
deleteCommentCascade(comment);
}
@org.springframework.transaction.annotation.Transactional
public void deleteCommentCascade(Comment comment) {
List<Comment> replies = commentRepository.findByParentOrderByCreatedAtAsc(comment);
for (Comment c : replies) {
deleteCommentCascade(c);
}
reactionRepository.findByComment(comment).forEach(reactionRepository::delete);
commentSubscriptionRepository.findByComment(comment).forEach(commentSubscriptionRepository::delete);
notificationRepository.findByComment(comment).forEach(n -> { n.setComment(null); notificationRepository.save(n); });
commentRepository.delete(comment);
}
}