public bool Initialize(string vipno = null)
{
lock (_locker)
{
if (Wrapper.User == null)
{
return(Initialized = false);
}
ActivityLogService.Logger.LogFunctionCall();
try
{
_vipno = vipno;
_previousSales = new List <SaleDiscount>();
_shoppingBag = new List <ShoppingItem>();
SaleDiscount.ResetCounter();
EngineRestarted?.Invoke();
return(Initialized = true);
}
catch (Exception ex)
{
ActivityLogService.Logger.LogError(ex);
return(Initialized = false);
}
}
}
private void evaluateChanges(List <SaleDiscount> newSales)
{
var previousSales = _previousSales;
_previousSales = newSales;
for (int i = 0; i < newSales.Count; i++)
{
SaleDiscount sd = newSales[i];
var removed = previousSales.FindAll(s => s == sd);
if (removed.Count == 0)
{
sd.SetID();
SaleApplied?.Invoke(sd);
}
else if (removed.Count != 1)
{
//### multiple equal sales
}
else // (removed.Count == 1)
{
sd.SetID(removed[0].ID);
previousSales.RemoveAll(s => s == sd);
}
}
for (int i = 0; i < previousSales.Count; i++)
{
SaleDiscount sd = previousSales[i];
SaleCancelled?.Invoke(sd.ID);
}
}
internal bool Add(SaleDiscount sd)
{
if (Title == sd.Title && Discount == sd.Discount)
{
Quantity += sd.Quantity;
return(true);
}
return(false);
}
//### Testing purpose
public bool InitializeForDebugging()
{
lock (_locker)
{
ActivityLogService.Logger.LogFunctionCall();
try
{
_previousSales = new List <SaleDiscount>();
AvailableSales = makeSalesForTester();
_shoppingBag = new List <ShoppingItem>();
SaleDiscount.ResetCounter();
EngineRestarted?.Invoke();
return(Initialized = true);
}
catch (Exception ex)
{
ActivityLogService.Logger.LogError(ex);
return(Initialized = false);
}
}
}