public ElectionResult CalculateElectionResult(int positionId)
{
Position position = _repository.GetPosition(positionId);
// Set up the Nominees for the one and only round of voting
List <ElectionRoundNomineeResult> nomineeResults = new List <ElectionRoundNomineeResult>();
foreach (Nominee nominee in position.Nominees)
{
nomineeResults.Add(new ElectionRoundNomineeResult()
{
NomineeId = nominee.Id,
Votes = position.Votes.Count(v => v.NomineeId == nominee.Id &&
!v.HasAbstained &&
v.PreferenceOrder == 1)
});
}
// Create the one and only round result
ElectionRoundResult roundResult = new ElectionRoundResult()
{
NomineeResults = nomineeResults,
Round = 1,
TotalVotes = nomineeResults.Sum(n => n.Votes),
};
// ... and the generic result object
ElectionResult result = new ElectionResult()
{
PositionId = positionId,
SuccessfulNomineeId = nomineeResults.Aggregate((n1, n2) => n1.Votes > n2.Votes ? n1 : n2).NomineeId,
RoundResults = new List <ElectionRoundResult>()
};
result.RoundResults.Add(roundResult);
return(result);
}
public ElectionResult CalculateElectionResult(int positionId)
{
Position position = _repository.GetPosition(positionId);
int round = 1;
// Create the generic result object
ElectionResult result = new ElectionResult()
{
PositionId = positionId,
RoundResults = new List <ElectionRoundResult>()
};
// Set up the first round of voting
ElectionRoundResult roundResult = new ElectionRoundResult()
{
NomineeResults = new List <ElectionRoundNomineeResult>(),
Round = round
};
foreach (Nominee nominee in position.Nominees.Where(n => !position.Election.IsNominationConfirmationRequired || n.HasConfirmedNomination))
{
roundResult.NomineeResults.Add(new ElectionRoundNomineeResult()
{
NomineeId = nominee.Id,
Votes = 0
});
}
// Repeat until we have a winner with majority
while (result.SuccessfulNomineeId != 0)
{
// Record the votes for this round
foreach (int userId in position.Votes.Select(v => v.UserId).Distinct())
{
List <Vote> userVotes = position.Votes.Where(v => v.UserId == userId).OrderBy(v => v.PreferenceOrder).ToList();
bool voteRecorded = false;
for (int i = 0; i < userVotes.Count() && !voteRecorded; i++)
{
if (!userVotes[i].HasAbstained &&
//position.RoleTypeId == userVotes[i].User.MembershipType.R
roundResult.NomineeResults.Any(nr => nr.NomineeId == userVotes[i].NomineeId))
{
roundResult.NomineeResults.Single(nr => nr.NomineeId == userVotes[i].NomineeId).Votes++;
voteRecorded = true;
}
}
if (voteRecorded)
{
roundResult.TotalVotes++;
}
else
{
roundResult.InvalidVotes++;
}
}
result.RoundResults.Add(roundResult);
// Do we have a majority winner?
if (roundResult.NomineeResults.Any(nr => nr.Votes > (roundResult.TotalVotes / 2)))
{
result.SuccessfulNomineeId = roundResult.NomineeResults.Single(nr => nr.Votes > (roundResult.TotalVotes / 2)).NomineeId;
}
else
{
// Set up the next round of voting
round++;
int minimumVotes = roundResult.NomineeResults.Select(nr => nr.Votes).Min();
roundResult = new ElectionRoundResult()
{
NomineeResults = new List <ElectionRoundNomineeResult>(),
Round = round
};
foreach (ElectionRoundNomineeResult nomineeResult in result.RoundResults.Single(rr => rr.Round == (round - 1)).NomineeResults.Where(nr => nr.Votes > minimumVotes))
{
roundResult.NomineeResults.Add(new ElectionRoundNomineeResult()
{
NomineeId = nomineeResult.NomineeId,
Votes = 0
});
}
}
}
result.RoundResults.Add(roundResult);
return(result);
}
