IM_NEW/GroupService.WebApi/Application/EventHandler/GroupInvitationEventHandler.cs

using GroupService.Domain.Events;
using GroupService.WebApi.Application.GroupMember;
using IM.Commons;
using IM.Commons.IntegrationEvents;
using MassTransit;
using MediatR;

namespace GroupService.WebApi.Application.EventHandler
{
    public class GroupInvitationEventHandler :
        INotificationHandler<GroupInvitationAcceptDomainEvent>
        , INotificationHandler<GroupInvitationCreateDomainEvent>
    {
        private readonly IPublishEndpoint endpoint;
        private readonly GroupMemberService memberService;

        public GroupInvitationEventHandler(IPublishEndpoint endpoint, GroupMemberService memberService)
        {
            this.endpoint = endpoint;
            this.memberService = memberService;
        }

        public async Task Handle(GroupInvitationAcceptDomainEvent notification, CancellationToken cancellationToken)
        {
            var invitation = notification.Invitation;
            // 邀请接受 → 直接加入群聊，不走入群申请审批流程
            var res = await memberService.CreateAsync(invitation.GroupId, invitation.UserId);

            await endpoint.Publish(new GroupInvitationAcceptEvent(invitation.Id, invitation.UserId, invitation.UserProfile.NickName, invitation.UserProfile.Avatar
                , invitation.GroupId, invitation.GroupProfile.GroupName, invitation.GroupProfile.Avatar, invitation.OperatorId
                , invitation.OperatorProfile.NickName, invitation.OperatorProfile.Avatar
                ), cancellationToken);

            if (!res.Succeeded)
            {
                throw new EventHandlerException(res.Message);
            }
        }

        public async Task Handle(GroupInvitationCreateDomainEvent notification, CancellationToken cancellationToken)
        {
            var invitation = notification.Invitation;
            await endpoint.Publish(new GroupInvitationCreateEvent(invitation.Id, invitation.UserId, invitation.UserProfile.NickName, invitation.UserProfile.Avatar
                , invitation.GroupId, invitation.GroupProfile.GroupName, invitation.GroupProfile.Avatar, invitation.OperatorId
                , invitation.OperatorProfile.NickName, invitation.OperatorProfile.Avatar), cancellationToken);
        }
    }
}