Files
OpenIsle/backend/src/main/java/com/openisle/service/NotificationService.java

252 lines
11 KiB
Java

package com.openisle.service;
import com.openisle.model.*;
import com.openisle.dto.NotificationPreferenceDto;
import com.openisle.repository.NotificationRepository;
import com.openisle.repository.ReactionRepository;
import com.openisle.repository.UserRepository;
import lombok.RequiredArgsConstructor;
import com.openisle.service.EmailSender;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.transaction.support.TransactionSynchronization;
import org.springframework.transaction.support.TransactionSynchronizationManager;
import java.util.Map;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
import java.util.Set;
import java.util.HashSet;
import java.util.List;
import java.util.ArrayList;
import java.util.concurrent.Executor;
/** Service for creating and retrieving notifications. */
@Service
@RequiredArgsConstructor
public class NotificationService {
private final NotificationRepository notificationRepository;
private final UserRepository userRepository;
private final EmailSender emailSender;
private final PushNotificationService pushNotificationService;
private final ReactionRepository reactionRepository;
private final Executor notificationExecutor;
@Value("${app.website-url}")
private String websiteUrl;
private static final Pattern MENTION_PATTERN = Pattern.compile("@\\[([^\\]]+)\\]");
private String buildPayload(String body, String url) {
// Ensure push notifications contain a link to the related resource so
// that verifications can assert its presence and users can navigate
// directly from the notification.
if (url == null || url.isBlank()) {
return body;
}
return body + ", 点击以查看: " + url;
}
public void sendCustomPush(User user, String body, String url) {
pushNotificationService.sendNotification(user, buildPayload(body, url));
}
public Notification createNotification(User user, NotificationType type, Post post, Comment comment, Boolean approved) {
return createNotification(user, type, post, comment, approved, null, null, null);
}
public Notification createNotification(User user, NotificationType type, Post post, Comment comment, Boolean approved,
User fromUser, ReactionType reactionType, String content) {
Notification n = new Notification();
n.setUser(user);
n.setType(type);
n.setPost(post);
n.setComment(comment);
n.setApproved(approved);
n.setFromUser(fromUser);
n.setReactionType(reactionType);
n.setContent(content);
if (type == NotificationType.POST_VIEWED && fromUser != null && post != null) {
notificationRepository.deleteByTypeAndFromUserAndPost(type, fromUser, post);
}
n = notificationRepository.save(n);
// Runnable asyncTask = () -> {
if (type == NotificationType.COMMENT_REPLY && user.getEmail() != null && post != null && comment != null) {
String url = String.format("%s/posts/%d#comment-%d", websiteUrl, post.getId(), comment.getId());
emailSender.sendEmail(user.getEmail(), "有人回复了你", url);
sendCustomPush(user, "有人回复了你", url);
} else if (type == NotificationType.REACTION && comment != null) {
// long count = reactionRepository.countReceived(comment.getAuthor().getUsername());
// if (count % 5 == 0) {
// String url = websiteUrl + "/messages";
// sendCustomPush(comment.getAuthor(), "你有新的互动", url);
// if (comment.getAuthor().getEmail() != null) {
// emailSender.sendEmail(comment.getAuthor().getEmail(), "你有新的互动", "你有新的互动, 点击以查看: " + url);
// }
// }
} else if (type == NotificationType.REACTION && post != null) {
// long count = reactionRepository.countReceived(post.getAuthor().getUsername());
// if (count % 5 == 0) {
// String url = websiteUrl + "/messages";
// sendCustomPush(post.getAuthor(), "你有新的互动", url);
// if (post.getAuthor().getEmail() != null) {
// emailSender.sendEmail(post.getAuthor().getEmail(), "你有新的互动", "你有新的互动, 点击以查看: " + url);
// }
// }
}
// };
// if (TransactionSynchronizationManager.isSynchronizationActive()) {
// TransactionSynchronizationManager.registerSynchronization(new TransactionSynchronization() {
// @Override
// public void afterCommit() {
// notificationExecutor.execute(asyncTask);
// }
// });
// } else {
// notificationExecutor.execute(asyncTask);
// }
return n;
}
public void deleteReactionNotification(User fromUser, Post post, Comment comment, ReactionType reactionType) {
if (post != null) {
notificationRepository.deleteByTypeAndFromUserAndPostAndReactionType(NotificationType.REACTION, fromUser, post, reactionType);
} else if (comment != null) {
notificationRepository.deleteByTypeAndFromUserAndCommentAndReactionType(NotificationType.REACTION, fromUser, comment, reactionType);
}
}
/**
* Create notifications for all admins when a user submits a register request.
* Old register request notifications from the same applicant are removed first.
*/
@org.springframework.transaction.annotation.Transactional
public void createRegisterRequestNotifications(User applicant, String reason) {
notificationRepository.deleteByTypeAndFromUser(NotificationType.REGISTER_REQUEST, applicant);
for (User admin : userRepository.findByRole(Role.ADMIN)) {
createNotification(admin, NotificationType.REGISTER_REQUEST, null, null,
null, applicant, null, reason);
}
}
/**
* Create notifications for all admins when a user redeems an activity.
* Old redeem notifications from the same user are removed first.
*/
@org.springframework.transaction.annotation.Transactional
public void createActivityRedeemNotifications(User user, String content) {
notificationRepository.deleteByTypeAndFromUser(NotificationType.ACTIVITY_REDEEM, user);
for (User admin : userRepository.findByRole(Role.ADMIN)) {
createNotification(admin, NotificationType.ACTIVITY_REDEEM, null, null,
null, user, null, content);
}
}
/**
* Create notifications for all admins when a user redeems a point good.
* Old redeem notifications from the same user are removed first.
*/
@org.springframework.transaction.annotation.Transactional
public void createPointRedeemNotifications(User user, String content) {
// notificationRepository.deleteByTypeAndFromUser(NotificationType.POINT_REDEEM, user);
for (User admin : userRepository.findByRole(Role.ADMIN)) {
createNotification(admin, NotificationType.POINT_REDEEM, null, null,
null, user, null, content);
}
}
public List<NotificationPreferenceDto> listPreferences(String username) {
User user = userRepository.findByUsername(username)
.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
Set<NotificationType> disabled = user.getDisabledNotificationTypes();
List<NotificationPreferenceDto> prefs = new ArrayList<>();
for (NotificationType nt : NotificationType.values()) {
NotificationPreferenceDto dto = new NotificationPreferenceDto();
dto.setType(nt);
dto.setEnabled(!disabled.contains(nt));
prefs.add(dto);
}
return prefs;
}
public void updatePreference(String username, NotificationType type, boolean enabled) {
User user = userRepository.findByUsername(username)
.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
Set<NotificationType> disabled = user.getDisabledNotificationTypes();
if (enabled) {
disabled.remove(type);
} else {
disabled.add(type);
}
userRepository.save(user);
}
public List<Notification> listNotifications(String username, Boolean read, int page, int size) {
User user = userRepository.findByUsername(username)
.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
Set<NotificationType> disabled = user.getDisabledNotificationTypes();
org.springframework.data.domain.Pageable pageable = org.springframework.data.domain.PageRequest.of(page, size);
org.springframework.data.domain.Page<Notification> result;
if (read == null) {
if (disabled.isEmpty()) {
result = notificationRepository.findByUserOrderByCreatedAtDesc(user, pageable);
} else {
result = notificationRepository.findByUserAndTypeNotInOrderByCreatedAtDesc(user, disabled, pageable);
}
} else {
if (disabled.isEmpty()) {
result = notificationRepository.findByUserAndReadOrderByCreatedAtDesc(user, read, pageable);
} else {
result = notificationRepository.findByUserAndReadAndTypeNotInOrderByCreatedAtDesc(user, read, disabled, pageable);
}
}
return result.getContent();
}
public void markRead(String username, List<Long> ids) {
User user = userRepository.findByUsername(username)
.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
List<Notification> notifs = notificationRepository.findAllById(ids);
for (Notification n : notifs) {
if (n.getUser().getId().equals(user.getId())) {
n.setRead(true);
}
}
notificationRepository.saveAll(notifs);
}
public long countUnread(String username) {
User user = userRepository.findByUsername(username)
.orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
Set<NotificationType> disabled = user.getDisabledNotificationTypes();
if (disabled.isEmpty()) {
return notificationRepository.countByUserAndRead(user, false);
}
return notificationRepository.countByUserAndReadAndTypeNotIn(user, false, disabled);
}
public void notifyMentions(String content, User fromUser, Post post, Comment comment) {
if (content == null || fromUser == null) {
return;
}
Matcher matcher = MENTION_PATTERN.matcher(content);
Set<String> names = new HashSet<>();
while (matcher.find()) {
names.add(matcher.group(1));
}
for (String name : names) {
userRepository.findByUsername(name).ifPresent(target -> {
if (!target.getId().equals(fromUser.getId())) {
createNotification(target, NotificationType.MENTION, post, comment, null, fromUser, null, null);
}
});
}
}
}