public static Interval CalculatePriceUpdates(List<ClientDrinkOrder> allOrdersItems, Interval[] intervals, int idCurrentInterval, bool predict, BeursfuifViewModelBase viewmodel)
{
viewmodel.PointInCode("PriceCalculation: CalculatePriceUpdates");
Interval currentInterval = intervals.FirstOrDefault(x => x.Id == idCurrentInterval);
if (currentInterval == null) throw new Exception("Current interval isn't part of the Interval array");
int currentIntervalIndex = Array.IndexOf(intervals, intervals.FirstOrDefault(x => x.Id == idCurrentInterval));
//the first to intervals don't trigger an update
if (currentIntervalIndex == 0) return intervals[1];
Interval previousInterval = intervals[currentIntervalIndex - 1];
//no new update possible, end of beursfuif
if (currentIntervalIndex == intervals.Length - 1) return null;
Interval nextInterval = (predict ? intervals[currentIntervalIndex + 1].Clone() : intervals[currentIntervalIndex + 1]);
int previousAllDrinkCount = allOrdersItems.Where(x => x.IntervalId == previousInterval.Id).Sum(x => x.Count);
viewmodel.SendLogMessage("Previous drink count: " + previousAllDrinkCount, LogType.SETTINGS_VM);
int currentAllDrinkCount = allOrdersItems.Where(x => x.IntervalId == currentInterval.Id).Sum(x => x.Count);
viewmodel.SendLogMessage("Current drink count: " + previousAllDrinkCount, LogType.SETTINGS_VM);
//2 in the excel file
int differenceAllDrinks = currentAllDrinkCount - previousAllDrinkCount;
viewmodel.SendLogMessage("Current all drinkcount - Previous all drinkcount", LogType.SETTINGS_VM);
Drink[] drinksForNextInterval = currentInterval.Drinks.Where(x => x.Available).ToArray();
int numberOfDrinks = drinksForNextInterval.Length;
for (int i = 0; i < numberOfDrinks; i++)
{
CalculateNewPrice(allOrdersItems, predict, currentInterval, previousInterval, nextInterval, previousAllDrinkCount, currentAllDrinkCount, differenceAllDrinks, drinksForNextInterval, i);
}
return nextInterval;
}
private static void CalculateNewPrice(List<ClientDrinkOrder> allOrdersItems, bool predict, Interval currentInterval, Interval previousInterval, Interval nextInterval, int previousAllDrinkCount, int currentAllDrinkCount, int differenceAllDrinks, Drink[] drinksForNextInterval, int i)
{
Drink drink = drinksForNextInterval[i];
int previousDrinkCount = allOrdersItems.Where(x => x.DrinkId == drink.Id && x.IntervalId == previousInterval.Id).Sum(x => x.Count);
int currentDrinkCount = allOrdersItems.Where(x => x.DrinkId == drink.Id && x.IntervalId == currentInterval.Id).Sum(x => x.Count);
//1 in the excel
int differenceDrinkCount = currentDrinkCount - previousDrinkCount;
//3 in the excel
double differenceProcentage = ((double)currentDrinkCount / (double)currentAllDrinkCount)
-
((double)previousDrinkCount / (double)previousAllDrinkCount);
if (differenceDrinkCount >= 0)
{
#region 1A
//the drink has been drank more
if (differenceAllDrinks >= 0)
{
#region 2AA
//more drinks have been drunk in general
if (differenceProcentage > 0)
{
//the drink has been drunk more procentually
drink.PriceFactor = PriceFactor.BigRise;
}
else
{
//the drink has been drunk less procentually
drink.PriceFactor = PriceFactor.BigDecrease;
}
#endregion
}
else
{
#region 2AB
//less drinks have been drunk in general
if (differenceProcentage > 0)
{
//the drink has been drunk more procentually
drink.PriceFactor = PriceFactor.SmallRise;
}
else
{
//the drink has been drunk less procentually
drink.PriceFactor = PriceFactor.SmallDecrease;
}
#endregion
}
#endregion
}
else
{
#region 1B
//the drink has been drank less
if (differenceAllDrinks > 0)
{
#region 2BA
//more drinks have been drunk in general
if (differenceProcentage > 0)
{
//the drink has been drunk more procentually
drink.PriceFactor = PriceFactor.BigDecrease;
}
else
{
//the drink has been drunk less procentually
drink.PriceFactor = PriceFactor.BigRise;
}
#endregion
}
else
{
#region 2BB
//more drinks have been drunk in general
if (differenceProcentage > 0)
{
//the drink has been drunk more procentually
drink.PriceFactor = PriceFactor.SmallDecrease;
}
else
{
//the drink has been drunk less procentually
drink.PriceFactor = PriceFactor.SmallRise;
}
#endregion
}
#endregion
}
//check if we need to use the override factor
if (drink.OverrideFactor != 0 && !predict) drink.PriceFactor = PriceFactor.Override;
Drink nextDrink = nextInterval.Drinks.FirstOrDefault(x => x.Id == drink.Id);
double priceFactor = drink.GetPriceFactorValue();
double priceWithoutRouding = drink.CurrentPrice * priceFactor;
int nextPrice = (int)Math.Round(priceWithoutRouding);
if (nextPrice > nextDrink.MaximumPrice) nextPrice = nextDrink.MaximumPrice;
if (nextPrice < nextDrink.MiniumPrice) nextPrice = nextDrink.MiniumPrice;
nextDrink.CurrentPrice = nextPrice;
if (predict) nextDrink.PriceFactor = drink.PriceFactor;
}
public IntervalViewModel(IBeursfuifData beursfuifData)
: base(beursfuifData)
{
if (IsInDesignMode)
{
#region DummyData
Intervals = new Interval[]{
new Interval(){
Id = 1,
StartTime = new DateTime(1970,1,1,21,0,0),
EndTime = new DateTime(1970,1,1,21,15,0)
},
new Interval(){
Id = 2,
StartTime = new DateTime(1970,1,1,21,15,0),
EndTime = new DateTime(1970,1,1,21,30,0)
},
new Interval(){
Id = 3,
StartTime = new DateTime(1970,1,1,21,30,0),
EndTime = new DateTime(1970,1,1,21,45,0)
},
new Interval(){
Id = 4,
StartTime = new DateTime(1970,1,1,21,45,0),
EndTime = new DateTime(1970,1,1,22,00,0)
}
};
#endregion
}
else
{
PointInCode("IntervalViewModel: Ctor");
_beursfuifData = beursfuifData;
if (Intervals != null && Intervals.Any())
{
BeginTime = Intervals[0].StartTime;
EndTime = Intervals[Intervals.Length - 1].EndTime;
ChosenInterval = IntervalChoices.FirstOrDefault(x => x.TotalMinutes == Intervals[0].Duration.TotalMinutes);
SendLogMessage("Intervals found in data folder", LogType.INTERVAL_VM);
}
InitCommands();
CheckCanEdit();
_beursfuifData.BeursfuifBusyChanged += BeursfuifData_BeursfuifBusyChanged;
_beursfuifData.DataReset += BeursfuifData_DataReset;
_beursfuifData.BeursfuifDataImported += BeursfuifData_BeursfuifDataImported;
}
}
//Because c# is always byRef on objects, that's why
private void FillInDrinks(Interval interval, Drink[] drinks)
{
PointInCode("SettingsViewModel: FillInDrinks");
int length = drinks.Length;
interval.Drinks = new Drink[length];
for (int i = 0; i < length; i++)
{
interval.Drinks[i] = drinks[i].Clone();
}
}
private void CreateIntervals(object state)
{
PointInCode("IntervalViewModel: CreateIntervals");
int numberOfIntervals = Convert.ToInt32(state);
Intervals = new Interval[numberOfIntervals];
for (int i = 0; i < numberOfIntervals; i++)
{
Intervals[i] = new Interval()
{
StartTime = BeginTime.AddMinutes(i * ChosenInterval.TotalMinutes),
EndTime = BeginTime.AddMinutes((i+1) * ChosenInterval.TotalMinutes),
Id = i + 1
};
}
SendLogMessage("New intervals created", LogType.INTERVAL_VM);
SaveIntervals();
}
