mirror of
https://github.com/nagisa77/OpenIsle.git
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469 lines
17 KiB
Java
469 lines
17 KiB
Java
package com.openisle.service;
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import com.openisle.config.CachingConfig;
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import com.openisle.exception.RateLimitException;
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import com.openisle.model.Comment;
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import com.openisle.model.CommentSort;
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import com.openisle.model.NotificationType;
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import com.openisle.model.PointHistory;
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import com.openisle.model.Post;
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import com.openisle.model.Role;
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import com.openisle.model.User;
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import com.openisle.repository.CommentRepository;
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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.repository.PointHistoryRepository;
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import com.openisle.repository.PostRepository;
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import com.openisle.repository.ReactionRepository;
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import com.openisle.repository.UserRepository;
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import com.openisle.search.SearchIndexEventPublisher;
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import com.openisle.service.NotificationService;
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import com.openisle.service.PointService;
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import com.openisle.service.SubscriptionService;
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import java.time.LocalDateTime;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import java.util.stream.Collectors;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.cache.annotation.CacheEvict;
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import org.springframework.cache.annotation.Cacheable;
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import org.springframework.data.domain.PageRequest;
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import org.springframework.data.domain.Pageable;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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@Service
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@RequiredArgsConstructor
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@Slf4j
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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 PointHistoryRepository pointHistoryRepository;
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private final PointService pointService;
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private final ImageUploader imageUploader;
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private final SearchIndexEventPublisher searchIndexEventPublisher;
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@CacheEvict(value = CachingConfig.POST_CACHE_NAME, allEntries = true)
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@Transactional
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public Comment addComment(String username, Long postId, String content) {
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log.debug("addComment called by user {} for post {}", username, postId);
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long recent = commentRepository.countByAuthorAfter(
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username,
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java.time.LocalDateTime.now().minusMinutes(1)
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);
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if (recent >= 3) {
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log.debug("Rate limit exceeded for user {}", username);
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throw new RateLimitException("Too many comments");
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}
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User author = userRepository
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.findByUsername(username)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
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Post post = postRepository
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.findById(postId)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("Post not found"));
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if (post.isClosed()) {
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throw new IllegalStateException("Post closed");
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}
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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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log.debug("Comment {} saved for post {}", comment.getId(), postId);
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// Update post comment statistics
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updatePostCommentStats(post);
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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(
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post.getAuthor(),
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NotificationType.COMMENT_REPLY,
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post,
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comment,
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null,
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null,
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null,
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null
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);
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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(
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u,
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NotificationType.POST_UPDATED,
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post,
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comment,
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null,
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null,
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null,
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null
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);
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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(
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u,
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NotificationType.USER_ACTIVITY,
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post,
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comment,
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null,
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null,
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null,
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null
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);
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}
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}
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notificationService.notifyMentions(content, author, post, comment);
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log.debug("addComment finished for comment {}", comment.getId());
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searchIndexEventPublisher.publishCommentSaved(comment);
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return comment;
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}
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public java.time.LocalDateTime getLastCommentTimeOfUserByUserId(Long userId) {
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// 根据用户id查询该用户最后回复时间
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return commentRepository.findLastCommentTimeOfUserByUserId(userId);
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}
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@CacheEvict(value = CachingConfig.POST_CACHE_NAME, allEntries = true)
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@Transactional
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public Comment addReply(String username, Long parentId, String content) {
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log.debug("addReply called by user {} for parent comment {}", username, parentId);
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long recent = commentRepository.countByAuthorAfter(
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username,
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java.time.LocalDateTime.now().minusMinutes(1)
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);
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if (recent >= 3) {
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log.debug("Rate limit exceeded for user {}", username);
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throw new RateLimitException("Too many comments");
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}
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User author = userRepository
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.findByUsername(username)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
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Comment parent = commentRepository
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.findById(parentId)
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.orElseThrow(() -> new IllegalArgumentException("Comment not found"));
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if (parent.getPost().isClosed()) {
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throw new IllegalStateException("Post closed");
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}
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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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log.debug("Reply {} saved for parent {}", comment.getId(), parentId);
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// Update post comment statistics
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updatePostCommentStats(parent.getPost());
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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(
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parent.getAuthor(),
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NotificationType.COMMENT_REPLY,
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parent.getPost(),
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comment,
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null,
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null,
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null,
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null
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);
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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(
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u,
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NotificationType.COMMENT_REPLY,
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parent.getPost(),
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comment,
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null,
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null,
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null,
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null
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);
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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(
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u,
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NotificationType.POST_UPDATED,
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parent.getPost(),
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comment,
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null,
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null,
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null,
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null
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);
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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(
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u,
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NotificationType.USER_ACTIVITY,
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parent.getPost(),
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comment,
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null,
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null,
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null,
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null
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);
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}
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}
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notificationService.notifyMentions(content, author, parent.getPost(), comment);
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log.debug("addReply finished for comment {}", comment.getId());
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searchIndexEventPublisher.publishCommentSaved(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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log.debug("getCommentsForPost called for post {} with sort {}", postId, sort);
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Post post = postRepository
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.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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java.util.List<Comment> pinned = new java.util.ArrayList<>();
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java.util.List<Comment> others = new java.util.ArrayList<>();
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for (Comment c : list) {
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if (c.getPinnedAt() != null) {
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pinned.add(c);
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} else {
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others.add(c);
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}
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}
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pinned.sort(java.util.Comparator.comparing(Comment::getPinnedAt).reversed());
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if (sort == CommentSort.NEWEST) {
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others.sort(java.util.Comparator.comparing(Comment::getCreatedAt).reversed());
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} else if (sort == CommentSort.MOST_INTERACTIONS) {
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others.sort((a, b) -> Integer.compare(interactionCount(b), interactionCount(a)));
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}
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java.util.List<Comment> result = new java.util.ArrayList<>();
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result.addAll(pinned);
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result.addAll(others);
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log.debug("getCommentsForPost returning {} comments", result.size());
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return result;
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}
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public List<Comment> getReplies(Long parentId) {
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log.debug("getReplies called for parent {}", parentId);
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Comment parent = commentRepository
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.findById(parentId)
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.orElseThrow(() -> new IllegalArgumentException("Comment not found"));
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List<Comment> replies = commentRepository.findByParentOrderByCreatedAtAsc(parent);
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log.debug("getReplies returning {} replies for parent {}", replies.size(), parentId);
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return replies;
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}
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public Comment getComment(Long commentId) {
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log.debug("getComment called for id {}", commentId);
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return commentRepository
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.findById(commentId)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("Comment not found"));
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}
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public List<Comment> getCommentsBefore(Comment comment) {
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log.debug("getCommentsBefore called for comment {}", comment.getId());
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List<Comment> comments = commentRepository.findByPostAndCreatedAtLessThanOrderByCreatedAtAsc(
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comment.getPost(),
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comment.getCreatedAt()
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);
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log.debug(
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"getCommentsBefore returning {} comments for comment {}",
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comments.size(),
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comment.getId()
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);
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return comments;
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}
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public List<Comment> getRecentCommentsByUser(String username, int limit) {
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log.debug("getRecentCommentsByUser called for user {} with limit {}", username, limit);
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User user = userRepository
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.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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List<Comment> comments = commentRepository.findByAuthorOrderByCreatedAtDesc(user, pageable);
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log.debug(
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"getRecentCommentsByUser returning {} comments for user {}",
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comments.size(),
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username
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);
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return comments;
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}
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public java.util.List<User> getParticipants(Long postId, int limit) {
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log.debug("getParticipants called for post {} with limit {}", postId, limit);
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Post post = postRepository
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.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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java.util.List<User> result = list.subList(0, Math.min(limit, list.size()));
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log.debug("getParticipants returning {} users for post {}", result.size(), postId);
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return result;
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}
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public java.util.List<Comment> getCommentsByIds(java.util.List<Long> ids) {
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log.debug("getCommentsByIds called for ids {}", ids);
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java.util.List<Comment> comments = commentRepository.findAllById(ids);
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log.debug("getCommentsByIds returning {} comments", comments.size());
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return comments;
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}
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public java.time.LocalDateTime getLastCommentTime(Long postId) {
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log.debug("getLastCommentTime called for post {}", postId);
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Post post = postRepository
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.findById(postId)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("Post not found"));
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java.time.LocalDateTime time = commentRepository.findLastCommentTime(post);
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log.debug("getLastCommentTime for post {} is {}", postId, time);
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return time;
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}
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public long countComments(Long postId) {
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log.debug("countComments called for post {}", postId);
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long count = commentRepository.countByPostId(postId);
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log.debug("countComments for post {} is {}", postId, count);
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return count;
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}
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@CacheEvict(value = CachingConfig.POST_CACHE_NAME, allEntries = true)
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@Transactional
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public void deleteComment(String username, Long id) {
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log.debug("deleteComment called by user {} for comment {}", username, id);
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User user = userRepository
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.findByUsername(username)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
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Comment comment = commentRepository
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.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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log.debug("User {} not authorized to delete comment {}", username, id);
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throw new IllegalArgumentException("Unauthorized");
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}
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deleteCommentCascade(comment);
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log.debug("deleteComment completed for comment {}", id);
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}
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@CacheEvict(value = CachingConfig.POST_CACHE_NAME, allEntries = true)
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@Transactional
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public void deleteCommentCascade(Comment comment) {
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log.debug("deleteCommentCascade called for comment {}", comment.getId());
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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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// 逻辑删除相关的积分历史记录，并收集受影响的用户
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List<PointHistory> pointHistories = pointHistoryRepository.findByComment(comment);
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// 收集需要重新计算积分的用户
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Set<User> usersToRecalculate = pointHistories
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.stream()
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.map(PointHistory::getUser)
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.collect(Collectors.toSet());
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// 删除其他相关数据
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reactionRepository.findByComment(comment).forEach(reactionRepository::delete);
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commentSubscriptionRepository
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.findByComment(comment)
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.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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// 逻辑删除评论
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Post post = comment.getPost();
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Long commentId = comment.getId();
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commentRepository.delete(comment);
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searchIndexEventPublisher.publishCommentDeleted(commentId);
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// 删除积分历史
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pointHistoryRepository.deleteAll(pointHistories);
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// Update post comment statistics
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updatePostCommentStats(post);
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// 重新计算受影响用户的积分
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if (!usersToRecalculate.isEmpty()) {
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for (User user : usersToRecalculate) {
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int newPoints = pointService.recalculateUserPoints(user);
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user.setPoint(newPoints);
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log.debug("Recalculated points for user {}: {}", user.getUsername(), newPoints);
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}
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userRepository.saveAll(usersToRecalculate);
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}
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log.debug("deleteCommentCascade removed comment {}", comment.getId());
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}
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@Transactional
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public Comment pinComment(String username, Long id) {
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Comment c = commentRepository
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.findById(id)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("Comment not found"));
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User user = userRepository
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.findByUsername(username)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
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if (!user.getId().equals(c.getPost().getAuthor().getId()) && user.getRole() != Role.ADMIN) {
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throw new IllegalArgumentException("Unauthorized");
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}
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c.setPinnedAt(LocalDateTime.now());
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return commentRepository.save(c);
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}
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@Transactional
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public Comment unpinComment(String username, Long id) {
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Comment c = commentRepository
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.findById(id)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("Comment not found"));
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User user = userRepository
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.findByUsername(username)
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.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
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if (!user.getId().equals(c.getPost().getAuthor().getId()) && user.getRole() != Role.ADMIN) {
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throw new IllegalArgumentException("Unauthorized");
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}
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c.setPinnedAt(null);
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return commentRepository.save(c);
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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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* Update post comment statistics (comment count and last reply time)
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*/
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public void updatePostCommentStats(Post post) {
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long commentCount = commentRepository.countByPostId(post.getId());
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post.setCommentCount(commentCount);
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LocalDateTime lastReplyAt = commentRepository.findLastCommentTime(post);
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if (lastReplyAt == null) {
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post.setLastReplyAt(post.getCreatedAt());
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} else {
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post.setLastReplyAt(lastReplyAt);
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}
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postRepository.save(post);
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log.debug(
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"Updated post {} stats: commentCount={}, lastReplyAt={}",
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post.getId(),
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commentCount,
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lastReplyAt
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);
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}
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}
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