ActivEarth.Server.Service.Competition.ChallengeManager.CleanUp C# (CSharp) Method

        public static void CleanUp()
        {
            foreach (Challenge challenge in ChallengeDAO.GetActiveChallenges())
            {
                if (challenge.EndTime <= DateTime.Now)
                {
                    ChallengeDAO.RemoveInitializationValues(challenge.ID);

                    if (challenge.IsPersistent)
                    {
                        challenge.EndTime = challenge.EndTime.Add(challenge.Duration);
                    }
                    else
                    {
                        challenge.IsActive = false;
                    }

                    ChallengeDAO.UpdateChallenge(challenge);
                }
            }
        }