private void AnalyzeTieGroup(ResultTie resultTie, List<Result> results)
{
AssertAtRuntime.That(results.Count != 0);
resultTie.NumInTie = results.Count;
resultTie.NumToElect = 0;
resultTie.TieBreakRequired = false;
var groupInTop = false;
var groupInExtra = false;
var groupInOther = false;
foreach (var result in results)
{
switch (result.Section)
{
case ResultHelper.Section.Top:
groupInTop = true;
break;
case ResultHelper.Section.Extra:
groupInExtra = true;
break;
case ResultHelper.Section.Other:
groupInOther = true;
break;
}
}
var groupOnlyInTop = groupInTop && !(groupInExtra || groupInOther);
var groupOnlyInOther = groupInOther && !(groupInTop || groupInExtra);
results.ForEach(delegate(Result r)
{
r.TieBreakRequired = !(groupOnlyInOther || groupOnlyInTop);
r.IsTieResolved = r.TieBreakCount.AsInt() > 0
&& !results.Any(r2 => r2.C_RowId != r.C_RowId
&& r2.TieBreakCount == r.TieBreakCount);
});
if (groupInOther && (groupInTop || groupInExtra))
{
results.Where(r => r.Section == ResultHelper.Section.Other)
.ToList()
.ForEach(r => r.ForceShowInOther = true);
}
if (groupInTop)
{
if (!groupOnlyInTop)
{
resultTie.NumToElect += results.Count(r => r.Section == ResultHelper.Section.Top);
resultTie.TieBreakRequired = true;
//resultTie.TieBreakRequired = results.Any(r => !r.IsTieResolved.AsBool());
}
else
{
// default... tie-break not needed
}
}
if (groupInExtra)
{
if (groupInTop && groupInOther || !groupInTop)
{
resultTie.NumToElect += results.Count(r => r.Section == ResultHelper.Section.Extra);
resultTie.TieBreakRequired = true;
//resultTie.TieBreakRequired = results.Any(r => !r.IsTieResolved.AsBool());
}
}
var foundBeforeDup = 0;
if (resultTie.NumToElect > 0)
{
//results are in descending order already, so starting at 0 is starting at the "top"
for (int i = 0, max = results.Count; i < max; i++)
{
var result = results[i];
if (!result.IsTieResolved.AsBoolean()) break;
foundBeforeDup += result.TieBreakCount > 0 ? 1 : 0;
}
}
if (foundBeforeDup < resultTie.NumToElect)
{
resultTie.IsResolved = false;
results.ForEach(r => r.IsTieResolved = false);
}
else
{
resultTie.IsResolved = true;
results.ForEach(r => r.IsTieResolved = true);
}
if (resultTie.NumInTie == resultTie.NumToElect)
{
resultTie.NumToElect--;
}
// conclusions
//resultTie.Comments = resultTie.TieBreakRequired.AsBool()
// ? "Tie-break required"
// : "Tie-break not needed";
}
public ResultTie AddResultTie(ResultTie arg)
{
arg.C_RowId = ++_rowCounter;
return arg;
}
internal void AnalyzeForTies()
{
Result aboveResult = null;
var nextTieBreakGroup = 1;
foreach (var result in Results.OrderBy(r => r.Rank))
{
result.IsTied = false;
result.TieBreakGroup = null;
if (aboveResult != null)
{
// compare this with the one 'above' it
var numFewerVotesThanAboveResult = aboveResult.VoteCount - result.VoteCount;
if (numFewerVotesThanAboveResult == 0)
{
aboveResult.IsTied = true;
result.IsTied = true;
if (aboveResult.TieBreakGroup.HasNoContent())
{
aboveResult.TieBreakGroup = nextTieBreakGroup;
nextTieBreakGroup++;
}
result.TieBreakGroup = aboveResult.TieBreakGroup;
}
// set CloseTo___ - if tied, then is also Close to
var isClose = numFewerVotesThanAboveResult <= ThresholdForCloseVote;
aboveResult.CloseToNext = isClose;
result.CloseToPrev = isClose;
}
else
{
result.CloseToPrev = false;
}
aboveResult = result;
}
// last one
if (aboveResult != null)
{
aboveResult.CloseToNext = false;
}
// pass 2
for (var groupCode = 1; groupCode < nextTieBreakGroup; groupCode++)
{
var code = groupCode;
var resultTie = new ResultTie
{
ElectionGuid = TargetElection.ElectionGuid,
TieBreakGroup = code
};
ResultTies.Add(resultTie);
AddResultTie(resultTie);
AnalyzeTieGroup(resultTie, Results.Where(r => r.TieBreakGroup == code).OrderBy(r => r.Rank).ToList());
}
}
public ResultTie RemoveResultTie(ResultTie arg)
{
throw new ApplicationException("Should not be called in tests!");
}