public decimal getLowestTotal()
{
if (!AvailableSpecials.Any())
{
LowestTotal = Total;
return(LowestTotal);
}
foreach (var item in AvailableSpecials)
{
var node = new TrolleyTotal()
{
RemainProduct = RemainProduct.ToDictionary(t => t.Key, t => new Product {
Name = t.Value.Name, Price = t.Value.Price, Quantity = t.Value.Quantity
}),
UsedSpecials = new List <Special>(UsedSpecials)
};
node.UsedSpecials.Add(item);
foreach (var productItem in item.Quantities)
{
node.RemainProduct[productItem.Name].Quantity -= productItem.Quantity;
}
node.Total = node.CalTotal();
node.AvailableSpecials = node.GetValidSpecial(AvailableSpecials);
Children.Add(node);
}
foreach (var child in Children)
{
child.getLowestTotal();
if (Total > child.LowestTotal)
{
LowestTotal = child.LowestTotal;
}
}
return(LowestTotal);
}
public List <Special> GetValidSpecial(List <Special> specials)
{
return(specials.Where(x => x.Quantities.All(quantity => RemainProduct.ContainsKey(quantity.Name) &&
RemainProduct[quantity.Name].Quantity >= quantity.Quantity)).ToList());
}
