public async Task <bool> Handle(ToggleUserFollowCommand request, CancellationToken cancellationToken)
{
var isFollow = false;
var ur = await _userRelationRepository.GetAsync(request.FollowerId, request.UserIdToFollow);
if (ur == null)
{
ur = new UserRelation(request.FollowerId, request.UserIdToFollow);
ur.Follow();
_userRelationRepository.Add(ur);
isFollow = true;
}
else
{
if (ur.Followed)
{
ur.UnFollow();
}
else
{
isFollow = true;
ur.Follow();
}
}
var result = await _userRelationRepository.UnitOfWork.SaveEntitiesAsync(cancellationToken);
if (result)
{
if (isFollow)
{
await SendUserFollowedEventAsync(request.FollowerId, request.UserIdToFollow);
}
else
{
await SendUserUnFollowedEventAsync(request.FollowerId, request.UserIdToFollow);
}
// 返回被关注者是否关注了我
ur = await _userRelationRepository.GetAsync(request.UserIdToFollow, request.FollowerId);
return(ur?.Followed ?? false);
}
throw new ApplicationException("操作失败");
}
public async Task <bool> Handle(FollowEachOtherCommand request, CancellationToken cancellationToken)
{
var anotherUserId = await _userRepository.GetUserIdByCodeAsync(request.InvitingUserCode);
if (anotherUserId != null)
{
var userId = Guid.Parse(request.UserId);
var relation1 = new UserRelation(userId, anotherUserId.Value);
var relation2 = new UserRelation(anotherUserId.Value, userId);
relation1.Follow();
relation2.Follow();
_userRelationRepository.Add(relation1);
_userRelationRepository.Add(relation2);
return(await _userRelationRepository.UnitOfWork.SaveEntitiesAsync());
}
return(false);
}