public async Task <CompetitionResponse> AddCompetition(Guid userId, CompetitionRequest request)
{
var challenge = _mappingService.CreateChallenge(request);
var competition = _mappingService.CreateCompetition(challenge.ChallengeId, request);
_challengeRepo.Create(challenge);
_competitionRepo.Create(competition);
_participantRepo.Create(new Participant(userId, competition.CompetitionId));
_adminRepo.Create(new Admin(userId, competition.CompetitionId));
await _competitionRepo.Save();
return(new CompetitionResponse(competition, true, userId));
}