private static bool Check_bin(int binIndex, SelectDueCardContextModel model)
{
if (binIndex <= 0)
{
return(false);
}
if (binIndex >= model.Bins.Length)
{
return(false);
}
if (model.Bins[binIndex].Length == 0)
{
return(false);
}
var configIndex = binIndex - 1;
if (configIndex < 0)
{
return(false);
}
if (configIndex >= model.Config.Bins.Length)
{
return(false);
}
if (binIndex == model.DueBinIndex)
{
return(model.Bins[binIndex].Length >= model.Config.Bins[configIndex].LowerDueThreshold);
}
return(model.Bins[binIndex].Length >= model.Config.Bins[configIndex].UpperDueThreshold);
}
private static Event[] Select_first_bin_with_cards(SelectDueCardContextModel model)
{
for (var i = 1; i < Math.Min(model.Bins.Length - 1, model.Config.Bins.Length + 1); i++)
{
if (model.Bins[i].Length > 0)
{
return new[] { new DueCardSelected {
CardId = model.Bins[i].First(), BinIndex = i
} }
}
}
;
return(new Event[0]);
}
private static Event[] Select_due_bin_in_specific_order(SelectDueCardContextModel model)
{
var dueBinIndex = Order_in_which_to_check_bins().FirstOrDefault(binIndex => Check_bin(binIndex, model));
return(dueBinIndex > 0
? new[] { new DueCardSelected {
CardId = model.Bins[dueBinIndex].First(), BinIndex = dueBinIndex
} }
: new Event[0]);
IEnumerable <int> Order_in_which_to_check_bins()
=> new[] { model.DueBinIndex,
1 }
.Concat(Enumerable.Range(2, model.Config.Bins.Length - 1).Reverse());
}
private static Event[] Fill_bin_1_and_select(SelectDueCardContextModel model)
{
var additionalCardsForBin1 = model.Bins[0].Take(model.Config.Bins[0].UpperDueThreshold - model.Bins[1].Length).ToArray();
model.Bins[1] = model.Bins[1].Concat(additionalCardsForBin1).ToArray();
var events = additionalCardsForBin1.Select(cardId => new CardMovedTo {
CardId = cardId, BinIndex = 1
}).ToList <Event>();
if (Check_bin(1, model))
{
events.Add(new DueCardSelected {
CardId = model.Bins[1].First(), BinIndex = 1
});
}
return(events.ToArray());
}