前端：

1、优化消息排序逻辑
2、新增加载历史消息
3、修复已知问题
后端：
1、优化消息排序逻辑
2、增加用户信息缓存机制
3、修改日期类型为DateTimeOffset改善时区信息丢失问题
3、修复了已知问题
数据库：
1、新增SequenceId字段用于消息排序
2、新增ClientMsgId字段用于客户端消息回执

backend/IM_API/Controllers/MessageController.cs

@@ -1,5 +1,9 @@
-using IM_API.Dtos;
+using IM_API.Application.Interfaces;
+using IM_API.Domain.Events;
+using IM_API.Dtos;
+using IM_API.Dtos.Message;
 using IM_API.Interface.Services;
+using IM_API.VOs.Message;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
@@ -15,31 +19,36 @@ namespace IM_API.Controllers
     {
         private readonly IMessageSevice _messageService;
         private readonly ILogger<MessageController> _logger;
-        public MessageController(IMessageSevice messageService, ILogger<MessageController> logger)
+        private readonly IEventBus _eventBus;
+        public MessageController(IMessageSevice messageService, ILogger<MessageController> logger, IEventBus eventBus)
         {
             _messageService = messageService;
             _logger = logger;
+            _eventBus = eventBus;
         }
         [HttpPost]
-        public async Task<IActionResult> SendPrivateMessage(MessageBaseDto dto)
+        [ProducesResponseType(typeof(BaseResponse<MessageBaseVo>), StatusCodes.Status200OK)]
+        public async Task<IActionResult> SendMessage(MessageBaseDto dto)
         {
             var userIdstr = User.FindFirstValue(ClaimTypes.NameIdentifier);
-            await _messageService.SendPrivateMessageAsync(int.Parse(userIdstr), dto.ReceiverId, dto);
-            return Ok(new BaseResponse<object?>());
-        }
-        [HttpPost]
-        public async Task<IActionResult> SendGroupMessage(MessageBaseDto dto)
-        {
-            var userIdstr = User.FindFirstValue(ClaimTypes.NameIdentifier);
-            await _messageService.SendGroupMessageAsync(int.Parse(userIdstr), dto.ReceiverId, dto);
-            return Ok(new BaseResponse<object?>());
+            MessageBaseVo messageBaseVo = new MessageBaseVo();
+            if(dto.ChatType == Models.ChatType.PRIVATE)
+            {
+                messageBaseVo = await _messageService.SendPrivateMessageAsync(int.Parse(userIdstr), dto.ReceiverId, dto);
+            }
+            else
+            {
+                messageBaseVo = await _messageService.SendGroupMessageAsync(int.Parse(userIdstr), dto.ReceiverId, dto);
+            }
+                return Ok(new BaseResponse<MessageBaseVo>(messageBaseVo));
         }
         [HttpGet]
-        public async Task<IActionResult> GetMessageList([Required]int conversationId, int? msgId, int? pageSize)
+        [ProducesResponseType(typeof(BaseResponse<List<MessageBaseVo>>), StatusCodes.Status200OK)]
+        public async Task<IActionResult> GetMessageList([FromQuery]MessageQueryDto dto)
         {
             var userIdStr = User.FindFirstValue(ClaimTypes.NameIdentifier);
-            var msgList = await _messageService.GetMessagesAsync(int.Parse(userIdStr), conversationId, msgId, pageSize, false);
-            var res = new BaseResponse<List<MessageBaseDto>>(msgList);
+            var msgList = await _messageService.GetMessagesAsync(int.Parse(userIdStr),dto);
+            var res = new BaseResponse<List<MessageBaseVo>>(msgList);
             return Ok(res);
         }
     }