public static PapersFactory GetPapersFactory()
{
if (_instance == null)
{
lock (syncLock) {
if (_instance == null)
{
_instance = new DorogobogatoPapersFactory();
}
}
}
return(_instance);
}
public static PapersFactory GetPapersFactory()
{
if (_instance == null)
{
lock (syncLock) {
if (_instance == null)
{
_instance = new CheapPapersFactory();
}
}
}
return(_instance);
}
public Papers MakePapers(Participant p)
{
PapersFactory appropriate = null;
foreach (var factory in _factories)
{
if (factory.Cost < p.MoneyForPapers)
{
appropriate = factory;
p.MoneyForPapers -= factory.Cost;
break;
}
}
if (appropriate == null)
{
Console.WriteLine("You got not enough money");
return(null);
}
Console.WriteLine("Here is your papers");
return(appropriate.CreatePapers(p));
}