private static decimal CalclateNecessaryWhenExistsVolumeNecessaryDetails(this Settings.VolumeNecessary volumeNecessary, decimal netLot, decimal tradePolicyMargin, bool isNight)
{
decimal necessary = 0m;
int detailCount = volumeNecessary.VolumeNecessaryDetails.Count;
int i = 0;
while (i < volumeNecessary.VolumeNecessaryDetails.Count)
{
var volumeNecessaryDetail = volumeNecessary.VolumeNecessaryDetails[i];
if (i == 0)
{
necessary = Math.Min(netLot, volumeNecessaryDetail.From) * tradePolicyMargin;
}
++i;
if (netLot > volumeNecessaryDetail.From)
{
decimal margin = volumeNecessaryDetail.GetMargin(isNight);
if (i < detailCount)
{
var nextDetail = volumeNecessary.VolumeNecessaryDetails[i];
decimal lot1 = netLot - volumeNecessaryDetail.From;
decimal lot2 = nextDetail.From - volumeNecessaryDetail.From;
decimal lot = Math.Min(lot1, lot2);
necessary += lot * margin;
}
else
{
necessary += (netLot - volumeNecessaryDetail.From) * margin;
}
}
}
return(necessary);
}
private static decimal CalculateNecessaryForFlat(this Settings.VolumeNecessary volumeNecessary, decimal netLot, decimal tradePolicyMargin, bool isNight)
{
var detail = volumeNecessary.GetMaxFromDetail(netLot);
if (detail == null)
{
return(netLot * tradePolicyMargin);
}
else
{
return(netLot * detail.GetMargin(isNight));
}
}
private static Settings.VolumeNecessaryDetail GetMaxFromDetail(this Settings.VolumeNecessary volumeNecessary, decimal netLot)
{
if (volumeNecessary.VolumeNecessaryDetails.Count == 0)
{
return(null);
}
Settings.VolumeNecessaryDetail result = null;
decimal maxFrom = decimal.MinValue;
foreach (var eachDetail in volumeNecessary.VolumeNecessaryDetails)
{
if (eachDetail.From < netLot && maxFrom < eachDetail.From)
{
maxFrom = eachDetail.From;
result = eachDetail;
}
}
return(result);
}
