private void LoadChanceToAppear()
{
// peso 2
var daysSince = LastTry != null?DateTime.Now.Subtract(LastTry.When).Days : 100;
var lastTry_score = 0;
if (daysSince < 20 && daysSince >= 1)
{
lastTry_score = daysSince / 2;
}
else if (daysSince == 0)
{
Chance = 1;
Chance_toolTip = "Question already completed today.";
return;
}
else
{
lastTry_score = 20;
}
// peso 4
var inv_avg = 40.0;
if (daysSince <= 7)
{
inv_avg -= ((20 * Avg_week) / 100) + ((15 * Avg_month) / 100) + ((05 * Avg_all) / 100);
}
else if (daysSince <= 30)
{
inv_avg -= ((30 * Avg_month) / 100) + ((10 * Avg_all) / 100);
}
else if (daysSince <= 7)
{
inv_avg -= ((40 * Avg_all) / 100);
}
// peso 1
var lastWasWrong = Tries != null && Tries.Any() ? (LastTry.Score == 100 ? 0 : 10) : 10;
// peso 3
var imp_score = ScoreHelper.GetScoreFromImportance(Importance) * 3;
Chance = Math.Round(lastTry_score + inv_avg + lastWasWrong + imp_score, 2);
Chance_toolTip = inv_avg + " (inv_avg) -> " + (daysSince <= 7 ? "avg_week (20%) + avg_month (15%) + avg_all (5%)" :
(daysSince <= 30 ? "avg_month (30%) + avg_all (10%)" :
"avg_all (40%) + ")) + "\n";
Chance_toolTip += lastTry_score + " (lastTry) + " + lastWasWrong + " (lastWrong) + " + imp_score + " (imp)";
}
public double GetAverageScoreByTime(int lastDays)
{
if (!Tries.Any())
{
return(0);
}
else
{
var filtered = Tries.Where(x => x.When >= (DateTime.Now.AddDays(-lastDays)));
if (filtered.Any())
{
return(filtered.Average(x => x.Score) * 10);
}
else
{
return(0);
}
}
}