后端：

新增好友请求事件和好友已添加事件

backend/IM_API/Services/FriendService.cs

@@ -1,9 +1,11 @@
 using AutoMapper;
+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.Tools;
+using MassTransit;
 using Microsoft.EntityFrameworkCore;
 
 namespace IM_API.Services
@@ -13,11 +15,13 @@ namespace IM_API.Services
         private readonly ImContext _context;
         private readonly ILogger<FriendService> _logger;
         private readonly IMapper _mapper;
-        public FriendService(ImContext context, ILogger<FriendService> logger, IMapper mapper)
+        private readonly IPublishEndpoint _endpoint;
+        public FriendService(ImContext context, ILogger<FriendService> logger, IMapper mapper, IPublishEndpoint endpoint)
         {
             _context = context;
             _logger = logger;
             _mapper = mapper;
+            _endpoint = endpoint;
         }
         #region 拉黑好友
         public async Task<bool> BlockeFriendAsync(int friendId)
@@ -127,13 +131,18 @@ namespace IM_API.Services
 
                 //同意后标记
                 case HandleFriendRequestAction.Accept:
-                    friend.StatusEnum = FriendStatus.Added;
                     friendRequest.StateEnum = FriendRequestState.Passed;
+                    await _endpoint.Publish(new FriendAddEvent()
+                    {
+                        AggregateId = friendRequest.Id.ToString(),
+                        OccurredAt = DateTime.UtcNow,
+                        Created = DateTime.UtcNow,
+                        EventId = Guid.NewGuid(),
+                        OperatorId = friendRequest.ResponseUser,
+                        RequestInfo = _mapper.Map<FriendRequestDto>(friendRequest),
+                        requestUserRemarkname = requestDto.RemarkName,
 
-                    //根据当前好友请求为被申请方添加一条好友记录（注意：好友记录为双向）
-                    var ResponseFriend = _mapper.Map<Friend>(friendRequest);
-                    if (!string.IsNullOrEmpty(requestDto.RemarkName)) ResponseFriend.RemarkName = requestDto.RemarkName;
-                    _context.Friends.Add(ResponseFriend);
+                    });
                     break;
 
                 //无效操作
@@ -172,6 +181,16 @@ namespace IM_API.Services
             var friendRequst = _mapper.Map<FriendRequest>(dto);
             _context.FriendRequests.Add(friendRequst);
             await _context.SaveChangesAsync();
+            await _endpoint.Publish(new RequestFriendEvent()
+            {
+                AggregateId = friendRequst.Id.ToString(),
+                OccurredAt = friendRequst.Created,
+                Description = friendRequst.Description,
+                EventId = Guid.NewGuid(),
+                FromUserId = friendRequst.RequestUser,
+                ToUserId = friendRequst.ResponseUser,
+                OperatorId = friendRequst.RequestUser
+            });
             return true;
         }
         #endregion