public async Task ExecuteAsync(CreateStudyRoomCommand message, CancellationToken token)
{
var userTutor = await _userRepository.LoadAsync(message.TutorId, token);
if (userTutor.Tutor?.State != ItemState.Ok)
{
throw new InvalidOperationException("user is not a tutor");
}
var student = await _userRepository.LoadAsync(message.StudentId, token);
var chatRoomIdentifier = ChatRoom.BuildChatRoomIdentifier(new[] { userTutor.Id, student.Id });
var chatRoom = await _chatRoomRepository.GetChatRoomAsync(chatRoomIdentifier, token);
if (chatRoom.Messages.Count == 0)
{
throw new InvalidOperationException("no active conversation");
}
var url = await _googleDocument.CreateOnlineDocAsync(chatRoomIdentifier, token);
userTutor.AddFollower(student);
var studyRoom = new StudyRoom(userTutor.Tutor, student, url);
await _studyRoomRepository.AddAsync(studyRoom, token);
}
