public async Task HandleAsync(FollowUser command)
{
if (command.UserId == command.FolloweeId)
{
throw new FollowerAndFolloweeIdAreTheSameException(command.UserId);
}
var follower = await _followerRepository.GetAsync(command.UserId, command.FolloweeId);
if (follower is {})
public async Task HandleAsync(UnfollowUser command)
{
if (command.UserId == command.FolloweeId)
{
throw new FollowerAndFolloweeIdAreTheSameException(command.UserId);
}
var follower = await _followerRepository.GetAsync(command.UserId, command.FolloweeId);
if (follower is null)
{
return;
}
await _followerRepository.DeleteAsync(follower.Id);
await _messageBroker.PublishAsync(new UserUnfollowed(command.UserId, command.FolloweeId));
}