mirror of
https://github.com/nagisa77/OpenIsle.git
synced 2026-02-15 03:20:55 +08:00
feat:【站内信】
This commit is contained in:
zpaeng
217
backend/src/main/java/com/openisle/service/MessageService.java
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217
backend/src/main/java/com/openisle/service/MessageService.java
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package com.openisle.service;
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import com.openisle.model.Message;
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import com.openisle.model.MessageConversation;
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import com.openisle.model.MessageParticipant;
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import com.openisle.model.User;
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import com.openisle.repository.MessageConversationRepository;
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import com.openisle.repository.MessageParticipantRepository;
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import com.openisle.repository.MessageRepository;
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import com.openisle.repository.UserRepository;
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import com.openisle.dto.ConversationDetailDto;
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import com.openisle.dto.ConversationDto;
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import com.openisle.dto.MessageDto;
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import com.openisle.dto.UserSummaryDto;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.data.domain.Page;
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import org.springframework.data.domain.Pageable;
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import org.springframework.messaging.simp.SimpMessagingTemplate;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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import java.time.LocalDateTime;
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import java.util.List;
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import java.util.stream.Collectors;
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@Service
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@RequiredArgsConstructor
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@Slf4j
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public class MessageService {
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private final MessageRepository messageRepository;
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private final MessageConversationRepository conversationRepository;
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private final MessageParticipantRepository participantRepository;
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private final UserRepository userRepository;
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private final SimpMessagingTemplate messagingTemplate;
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@Transactional
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public Message sendMessage(Long senderId, Long recipientId, String content) {
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log.info("Attempting to send message from user {} to user {}", senderId, recipientId);
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User sender = userRepository.findById(senderId)
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.orElseThrow(() -> new IllegalArgumentException("Sender not found"));
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User recipient = userRepository.findById(recipientId)
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.orElseThrow(() -> new IllegalArgumentException("Recipient not found"));
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log.info("Finding or creating conversation for users {} and {}", sender.getUsername(), recipient.getUsername());
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MessageConversation conversation = findOrCreateConversation(sender, recipient);
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log.info("Conversation found or created with ID: {}", conversation.getId());
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Message message = new Message();
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message.setConversation(conversation);
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message.setSender(sender);
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message.setContent(content);
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message = messageRepository.save(message);
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log.info("Message saved with ID: {}", message.getId());
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conversation.setLastMessage(message);
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conversationRepository.save(conversation);
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log.info("Conversation {} updated with last message ID {}", conversation.getId(), message.getId());
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// Broadcast the new message to subscribed clients
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MessageDto messageDto = toDto(message);
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String conversationDestination = "/topic/conversation/" + conversation.getId();
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messagingTemplate.convertAndSend(conversationDestination, messageDto);
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log.info("Message {} broadcasted to destination: {}", message.getId(), conversationDestination);
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// Also notify the recipient on their personal channel to update the conversation list
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String userDestination = "/topic/user/" + recipient.getId() + "/messages";
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messagingTemplate.convertAndSend(userDestination, messageDto);
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log.info("Message {} notification sent to destination: {}", message.getId(), userDestination);
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// Notify recipient of new unread count
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long unreadCount = getUnreadMessageCount(recipientId);
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log.info("Calculating unread count for user {}: {}", recipientId, unreadCount);
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// Send using username instead of user ID for WebSocket routing
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String recipientUsername = recipient.getUsername();
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messagingTemplate.convertAndSendToUser(recipientUsername, "/queue/unread-count", unreadCount);
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log.info("Sent unread count {} to user {} (username: {}) via WebSocket destination: /user/{}/queue/unread-count",
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unreadCount, recipientId, recipientUsername, recipientUsername);
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return message;
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}
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private MessageDto toDto(Message message) {
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MessageDto dto = new MessageDto();
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dto.setId(message.getId());
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dto.setContent(message.getContent());
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dto.setConversationId(message.getConversation().getId());
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dto.setCreatedAt(message.getCreatedAt());
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UserSummaryDto userSummaryDto = new UserSummaryDto();
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userSummaryDto.setId(message.getSender().getId());
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userSummaryDto.setUsername(message.getSender().getUsername());
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userSummaryDto.setAvatar(message.getSender().getAvatar());
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dto.setSender(userSummaryDto);
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return dto;
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}
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public MessageConversation findOrCreateConversation(Long user1Id, Long user2Id) {
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User user1 = userRepository.findById(user1Id)
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.orElseThrow(() -> new IllegalArgumentException("User1 not found"));
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User user2 = userRepository.findById(user2Id)
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.orElseThrow(() -> new IllegalArgumentException("User2 not found"));
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return findOrCreateConversation(user1, user2);
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}
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private MessageConversation findOrCreateConversation(User user1, User user2) {
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log.info("Searching for existing conversation between {} and {}", user1.getUsername(), user2.getUsername());
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return conversationRepository.findConversationByUsers(user1, user2)
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.orElseGet(() -> {
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log.info("No existing conversation found. Creating a new one.");
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MessageConversation conversation = new MessageConversation();
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conversation = conversationRepository.save(conversation);
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log.info("New conversation created with ID: {}", conversation.getId());
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MessageParticipant participant1 = new MessageParticipant();
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participant1.setConversation(conversation);
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participant1.setUser(user1);
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participantRepository.save(participant1);
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log.info("Participant {} added to conversation {}", user1.getUsername(), conversation.getId());
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MessageParticipant participant2 = new MessageParticipant();
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participant2.setConversation(conversation);
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participant2.setUser(user2);
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participantRepository.save(participant2);
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log.info("Participant {} added to conversation {}", user2.getUsername(), conversation.getId());
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return conversation;
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});
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}
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@Transactional(readOnly = true)
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public List<ConversationDto> getConversations(Long userId) {
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List<MessageConversation> conversations = conversationRepository.findConversationsByUserIdOrderByLastMessageDesc(userId);
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return conversations.stream().map(c -> toDto(c, userId)).collect(Collectors.toList());
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}
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private ConversationDto toDto(MessageConversation conversation, Long userId) {
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ConversationDto dto = new ConversationDto();
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dto.setId(conversation.getId());
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dto.setCreatedAt(conversation.getCreatedAt());
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if (conversation.getLastMessage() != null) {
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dto.setLastMessage(toDto(conversation.getLastMessage()));
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}
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dto.setParticipants(conversation.getParticipants().stream()
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.map(p -> {
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UserSummaryDto userDto = new UserSummaryDto();
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userDto.setId(p.getUser().getId());
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userDto.setUsername(p.getUser().getUsername());
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userDto.setAvatar(p.getUser().getAvatar());
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return userDto;
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})
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.collect(Collectors.toList()));
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MessageParticipant self = conversation.getParticipants().stream()
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.filter(p -> p.getUser().getId().equals(userId))
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.findFirst()
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.orElseThrow(() -> new IllegalStateException("Participant not found in conversation"));
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LocalDateTime lastRead = self.getLastReadAt() == null ? LocalDateTime.of(1970, 1, 1, 0, 0) : self.getLastReadAt();
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// 只计算别人发送给当前用户的未读消息
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long unreadCount = messageRepository.countByConversationIdAndCreatedAtAfterAndSenderIdNot(conversation.getId(), lastRead, userId);
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dto.setUnreadCount(unreadCount);
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return dto;
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}
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@Transactional
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public ConversationDetailDto getConversationDetails(Long conversationId, Long userId, Pageable pageable) {
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markConversationAsRead(conversationId, userId);
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MessageConversation conversation = conversationRepository.findById(conversationId)
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.orElseThrow(() -> new IllegalArgumentException("Conversation not found"));
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Page<Message> messagesPage = messageRepository.findByConversationId(conversationId, pageable);
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Page<MessageDto> messageDtoPage = messagesPage.map(this::toDto);
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List<UserSummaryDto> participants = conversation.getParticipants().stream()
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.map(p -> {
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UserSummaryDto userDto = new UserSummaryDto();
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userDto.setId(p.getUser().getId());
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userDto.setUsername(p.getUser().getUsername());
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userDto.setAvatar(p.getUser().getAvatar());
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return userDto;
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})
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.collect(Collectors.toList());
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ConversationDetailDto detailDto = new ConversationDetailDto();
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detailDto.setId(conversation.getId());
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detailDto.setParticipants(participants);
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detailDto.setMessages(messageDtoPage);
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return detailDto;
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}
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@Transactional
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public void markConversationAsRead(Long conversationId, Long userId) {
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MessageParticipant participant = participantRepository.findByConversationIdAndUserId(conversationId, userId)
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.orElseThrow(() -> new IllegalArgumentException("Participant not found"));
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participant.setLastReadAt(LocalDateTime.now());
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participantRepository.save(participant);
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}
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@Transactional(readOnly = true)
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public long getUnreadMessageCount(Long userId) {
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List<MessageParticipant> participations = participantRepository.findByUserId(userId);
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long totalUnreadCount = 0;
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for (MessageParticipant p : participations) {
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LocalDateTime lastRead = p.getLastReadAt() == null ? LocalDateTime.of(1970, 1, 1, 0, 0) : p.getLastReadAt();
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// 只计算别人发送给当前用户的未读消息
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totalUnreadCount += messageRepository.countByConversationIdAndCreatedAtAfterAndSenderIdNot(p.getConversation().getId(), lastRead, userId);
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}
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return totalUnreadCount;
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}
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}
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