后端：

1、事件订阅增加rabbitmq中间件移动端： 1、完善移动端目录结构和代码框架
2026-01-28 18:19:45 +08:00
parent f9cc69698c 6cab42679c
commit ae99d3290f
47 changed files with 821 additions and 265 deletions
@@ -0,0 +1,63 @@
+using AutoMapper;
+using IM_API.Application.Interfaces;
+using IM_API.Domain.Events;
+using IM_API.Dtos;
+using IM_API.Exceptions;
+using IM_API.Interface.Services;
+using IM_API.Models;
+using IM_API.Services;
+using IM_API.Tools;
+using MassTransit;
+using Microsoft.EntityFrameworkCore;
+using Newtonsoft.Json;
+
+namespace IM_API.Application.EventHandlers.MessageCreatedHandler
+{
+    public class ConversationEventHandler : IConsumer<MessageCreatedEvent>
+    {
+        private readonly IConversationService _conversationService;
+        private readonly ILogger<ConversationEventHandler> _logger;
+        private readonly ImContext _context;
+        private readonly IMapper _mapper;
+        public ConversationEventHandler(
+            IConversationService conversationService,
+            ILogger<ConversationEventHandler> logger,
+            ImContext imContext,
+            IMapper mapper
+            )
+        {
+            _conversationService = conversationService;
+            _logger = logger;
+            _context = imContext;
+            _mapper = mapper;
+        }
+
+        public async Task Consume(ConsumeContext<MessageCreatedEvent> context)
+        {
+            var @event = context.Message;
+
+            if (@event.ChatType == ChatType.PRIVATE)
+            {
+                Conversation? userAConversation = await _context.Conversations.FirstOrDefaultAsync(
+                    x => x.UserId == @event.MsgSenderId && x.TargetId == @event.MsgRecipientId
+                    );
+                Conversation? userBConversation = await _context.Conversations.FirstOrDefaultAsync(
+                    x => x.UserId == @event.MsgRecipientId && x.TargetId == @event.MsgSenderId
+                    );
+                if (userAConversation is null || userBConversation is null)
+                {
+                    _logger.LogError("消息事件更新会话信息失败：{@event}", @event);
+                }
+                userAConversation.LastMessage = @event.MessageContent;
+                userAConversation.LastReadMessageId = @event.MessageId;
+                userAConversation.LastMessageTime = @event.MessageCreated;
+                userBConversation.LastMessage = @event.MessageContent;
+                userBConversation.UnreadCount += 1;
+                userBConversation.LastMessageTime = @event.MessageCreated;
+                _context.UpdateRange(userAConversation, userBConversation);
+                await _context.SaveChangesAsync();
+            }
+        }
+
+    }
+}