后端：

新增好友请求事件和好友已添加事件

backend/IM_API/Application/EventHandlers/FriendAddHandler/FriendAddConversationHandler.cs

@@ -1,13 +1,26 @@
 using IM_API.Domain.Events;
+using IM_API.Interface.Services;
 using MassTransit;
 
 namespace IM_API.Application.EventHandlers.FriendAddHandler
 {
     public class FriendAddConversationHandler : IConsumer<FriendAddEvent>
     {
-        public Task Consume(ConsumeContext<FriendAddEvent> context)
+        private readonly IFriendSerivce _friendService;
+        public FriendAddConversationHandler(IFriendSerivce friendService)
         {
-            throw new NotImplementedException();
+            _friendService = friendService;
+        }
+
+        public async Task Consume(ConsumeContext<FriendAddEvent> context)
+        {
+            var @event = context.Message;
+            //为请求发起人添加好友记录
+            await _friendService.MakeFriendshipAsync(
+                @event.RequestUserId, @event.ResponseUserId, @event.RequestInfo.RemarkName);
+            //为接收人添加好友记录
+            await _friendService.MakeFriendshipAsync(
+                @event.ResponseUserId, @event.RequestUserId, @event.requestUserRemarkname);
         }
     }
 }

backend/IM_API/Application/EventHandlers/FriendAddHandler/FriendAddSignalRHandler.cs

@@ -1,28 +1,37 @@
 using IM_API.Domain.Events;
+using IM_API.Dtos;
+using IM_API.Hubs;
 using IM_API.Interface.Services;
 using IM_API.Models;
 using MassTransit;
+using Microsoft.AspNetCore.SignalR;
 
 namespace IM_API.Application.EventHandlers.FriendAddHandler
 {
     public class FriendAddSignalRHandler : IConsumer<FriendAddEvent>
     {
-        private readonly IFriendSerivce _friendService;
-        public FriendAddSignalRHandler(IFriendSerivce friendSerivce)
+        private readonly IHubContext<ChatHub> _chathub;
+        public FriendAddSignalRHandler(IHubContext<ChatHub> chathub)
         {
-            _friendService = friendSerivce;
+            _chathub = chathub;
         }
 
         public async Task Consume(ConsumeContext<FriendAddEvent> context)
         {
             var @event = context.Message;
-            //为请求发起人添加好友记录
-            await _friendService.MakeFriendshipAsync(
-                @event.RequestUser.Id, @event.ResponseUser.Id, @event.RequestInfo.RemarkName);
-            //为接收人添加好友记录
-            await _friendService.MakeFriendshipAsync(
-                @event.ResponseUser.Id, @event.RequestUser.Id, @event.requestUserRemarkname);
-
+            var usersList = new List<string> { 
+                @event.RequestUserId.ToString(), @event.ResponseUserId.ToString()
+            };
+            var res = new HubResponse<MessageBaseDto>("Event", new MessageBaseDto()
+            {
+                ChatType = ChatType.PRIVATE,
+                Content = "您有新的好友关系已添加",
+                MsgId = @event.EventId.ToString(),
+                ReceiverId = @event.ResponseUserId,
+                SenderId = @event.RequestUserId,
+                TimeStamp = DateTime.UtcNow
+            });
+            await _chathub.Clients.Users(usersList).SendAsync("ReceiveMessage", res);
         }
     }
 }

backend/IM_API/Application/EventHandlers/MessageCreatedHandler/SignalREventHandler.cs

@@ -28,13 +28,13 @@ namespace IM_API.Application.EventHandlers.MessageCreatedHandler
                 MessageBaseDto messageBaseDto = new MessageBaseDto
                 {
                     MsgId = @event.MessageId.ToString(),
-                    ChatType = @event.ChatType.ToString(),
+                    ChatType = @event.ChatType,
                     Content = @event.MessageContent,
                     GroupMemberId = null,
                     ReceiverId = @event.MsgRecipientId,
                     SenderId = @event.MsgSenderId,
                     TimeStamp = @event.MessageCreated,
-                    Type = @event.MessageMsgType.ToString()
+                    Type = @event.MessageMsgType
                 };
                 await _hub.Clients.Users(@event.MsgRecipientId.ToString()).SendAsync("ReceiveMessage", messageBaseDto);
             }

backend/IM_API/Application/EventHandlers/RequestFriendHandler/RequestFriendSignalRHandler.cs

@@ -0,0 +1,36 @@
+using IM_API.Domain.Events;
+using IM_API.Dtos;
+using IM_API.Hubs;
+using IM_API.Interface.Services;
+using MassTransit;
+using Microsoft.AspNetCore.SignalR;
+
+namespace IM_API.Application.EventHandlers.RequestFriendHandler
+{
+    public class RequestFriendSignalRHandler:IConsumer<RequestFriendEvent>
+    {
+        private readonly IHubContext<ChatHub> _hub;
+        private readonly IUserService _userService;
+        public RequestFriendSignalRHandler(IHubContext<ChatHub> hubContext, IUserService userService)
+        {
+            _hub = hubContext;
+            _userService = userService;
+        }
+
+        public async Task Consume(ConsumeContext<RequestFriendEvent> context)
+        {
+            var @event = context.Message;
+            var userInfo = await _userService.GetUserInfoAsync(@event.FromUserId);
+            var res = new HubResponse<FriendRequestResDto>("Event", new FriendRequestResDto()
+            {
+                RequestUser = @event.FromUserId,
+                ResponseUser = @event.ToUserId,
+                Created = DateTime.UtcNow,
+                Description = @event.Description,
+                Avatar = userInfo.Avatar,
+                NickName = userInfo.NickName
+            });
+            await _hub.Clients.User(@event.ToUserId.ToString()).SendAsync("ReceiveMessage", res);
+        }
+    }
+}