mirror of
https://github.com/nagisa77/OpenIsle.git
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优化目录结构
This commit is contained in:
WilliamColton
185
backend/src/main/java/com/openisle/service/CommentService.java
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185
backend/src/main/java/com/openisle/service/CommentService.java
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package com.openisle.service;
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import com.openisle.model.Comment;
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import com.openisle.model.Post;
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import com.openisle.model.User;
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import com.openisle.model.NotificationType;
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import com.openisle.model.CommentSort;
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import com.openisle.repository.CommentRepository;
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import com.openisle.repository.PostRepository;
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import com.openisle.repository.UserRepository;
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import com.openisle.repository.ReactionRepository;
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import com.openisle.repository.CommentSubscriptionRepository;
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import com.openisle.repository.NotificationRepository;
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import com.openisle.service.NotificationService;
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import com.openisle.service.SubscriptionService;
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import com.openisle.model.Role;
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import com.openisle.exception.RateLimitException;
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import lombok.RequiredArgsConstructor;
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import org.springframework.stereotype.Service;
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import java.util.List;
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import org.springframework.data.domain.PageRequest;
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import org.springframework.data.domain.Pageable;
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@Service
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@RequiredArgsConstructor
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public class CommentService {
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private final CommentRepository commentRepository;
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private final PostRepository postRepository;
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private final UserRepository userRepository;
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private final NotificationService notificationService;
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private final SubscriptionService subscriptionService;
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private final ReactionRepository reactionRepository;
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private final CommentSubscriptionRepository commentSubscriptionRepository;
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private final NotificationRepository notificationRepository;
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private final ImageUploader imageUploader;
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public Comment addComment(String username, Long postId, String content) {
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long recent = commentRepository.countByAuthorAfter(username,
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java.time.LocalDateTime.now().minusMinutes(1));
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if (recent >= 3) {
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throw new RateLimitException("Too many comments");
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}
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User author = userRepository.findByUsername(username)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
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Post post = postRepository.findById(postId)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("Post not found"));
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Comment comment = new Comment();
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comment.setAuthor(author);
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comment.setPost(post);
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comment.setContent(content);
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comment = commentRepository.save(comment);
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imageUploader.addReferences(imageUploader.extractUrls(content));
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if (!author.getId().equals(post.getAuthor().getId())) {
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notificationService.createNotification(post.getAuthor(), NotificationType.COMMENT_REPLY, post, comment, null, null, null, null);
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}
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for (User u : subscriptionService.getPostSubscribers(postId)) {
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if (!u.getId().equals(author.getId())) {
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notificationService.createNotification(u, NotificationType.POST_UPDATED, post, comment, null, null, null, null);
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}
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}
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for (User u : subscriptionService.getSubscribers(author.getUsername())) {
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if (!u.getId().equals(author.getId())) {
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notificationService.createNotification(u, NotificationType.USER_ACTIVITY, post, comment, null, null, null, null);
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}
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}
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notificationService.notifyMentions(content, author, post, comment);
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return comment;
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}
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public Comment addReply(String username, Long parentId, String content) {
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long recent = commentRepository.countByAuthorAfter(username,
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java.time.LocalDateTime.now().minusMinutes(1));
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if (recent >= 3) {
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throw new RateLimitException("Too many comments");
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}
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User author = userRepository.findByUsername(username)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
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Comment parent = commentRepository.findById(parentId)
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.orElseThrow(() -> new IllegalArgumentException("Comment not found"));
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Comment comment = new Comment();
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comment.setAuthor(author);
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comment.setPost(parent.getPost());
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comment.setParent(parent);
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comment.setContent(content);
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comment = commentRepository.save(comment);
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imageUploader.addReferences(imageUploader.extractUrls(content));
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if (!author.getId().equals(parent.getAuthor().getId())) {
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notificationService.createNotification(parent.getAuthor(), NotificationType.COMMENT_REPLY, parent.getPost(), comment, null, null, null, null);
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}
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for (User u : subscriptionService.getCommentSubscribers(parentId)) {
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if (!u.getId().equals(author.getId())) {
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notificationService.createNotification(u, NotificationType.COMMENT_REPLY, parent.getPost(), comment, null, null, null, null);
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}
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}
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for (User u : subscriptionService.getPostSubscribers(parent.getPost().getId())) {
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if (!u.getId().equals(author.getId())) {
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notificationService.createNotification(u, NotificationType.POST_UPDATED, parent.getPost(), comment, null, null, null, null);
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}
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}
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for (User u : subscriptionService.getSubscribers(author.getUsername())) {
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if (!u.getId().equals(author.getId())) {
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notificationService.createNotification(u, NotificationType.USER_ACTIVITY, parent.getPost(), comment, null, null, null, null);
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}
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}
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notificationService.notifyMentions(content, author, parent.getPost(), comment);
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return comment;
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}
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public List<Comment> getCommentsForPost(Long postId, CommentSort sort) {
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Post post = postRepository.findById(postId)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("Post not found"));
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List<Comment> list = commentRepository.findByPostAndParentIsNullOrderByCreatedAtAsc(post);
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if (sort == CommentSort.NEWEST) {
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list.sort(java.util.Comparator.comparing(Comment::getCreatedAt).reversed());
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} else if (sort == CommentSort.MOST_INTERACTIONS) {
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list.sort((a, b) -> Integer.compare(interactionCount(b), interactionCount(a)));
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}
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return list;
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}
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public List<Comment> getReplies(Long parentId) {
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Comment parent = commentRepository.findById(parentId)
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.orElseThrow(() -> new IllegalArgumentException("Comment not found"));
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return commentRepository.findByParentOrderByCreatedAtAsc(parent);
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}
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public List<Comment> getRecentCommentsByUser(String username, int limit) {
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User user = userRepository.findByUsername(username)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
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Pageable pageable = PageRequest.of(0, limit);
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return commentRepository.findByAuthorOrderByCreatedAtDesc(user, pageable);
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}
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public java.util.List<User> getParticipants(Long postId, int limit) {
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Post post = postRepository.findById(postId)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("Post not found"));
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java.util.LinkedHashSet<User> set = new java.util.LinkedHashSet<>();
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set.add(post.getAuthor());
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set.addAll(commentRepository.findDistinctAuthorsByPost(post));
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java.util.List<User> list = new java.util.ArrayList<>(set);
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return list.subList(0, Math.min(limit, list.size()));
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}
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public java.util.List<Comment> getCommentsByIds(java.util.List<Long> ids) {
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return commentRepository.findAllById(ids);
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}
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public java.time.LocalDateTime getLastCommentTime(Long postId) {
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Post post = postRepository.findById(postId)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("Post not found"));
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return commentRepository.findLastCommentTime(post);
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}
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@org.springframework.transaction.annotation.Transactional
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public void deleteComment(String username, Long id) {
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User user = userRepository.findByUsername(username)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
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Comment comment = commentRepository.findById(id)
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.orElseThrow(() -> new IllegalArgumentException("Comment not found"));
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if (!user.getId().equals(comment.getAuthor().getId()) && user.getRole() != Role.ADMIN) {
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throw new IllegalArgumentException("Unauthorized");
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}
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deleteCommentCascade(comment);
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}
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@org.springframework.transaction.annotation.Transactional
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public void deleteCommentCascade(Comment comment) {
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List<Comment> replies = commentRepository.findByParentOrderByCreatedAtAsc(comment);
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for (Comment c : replies) {
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deleteCommentCascade(c);
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}
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reactionRepository.findByComment(comment).forEach(reactionRepository::delete);
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commentSubscriptionRepository.findByComment(comment).forEach(commentSubscriptionRepository::delete);
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notificationRepository.deleteAll(notificationRepository.findByComment(comment));
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imageUploader.removeReferences(imageUploader.extractUrls(comment.getContent()));
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commentRepository.delete(comment);
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}
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private int interactionCount(Comment comment) {
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int reactions = reactionRepository.findByComment(comment).size();
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int replies = commentRepository.findByParentOrderByCreatedAtAsc(comment).size();
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return reactions + replies;
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}
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}
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