public OrderManager(string dinerName_)
{
DinerName = dinerName_;
const int OneOrder = 1;
const int InfinteOrders = int.MaxValue;
// register types of meals per time
MenuFactory <MenuOffering> .Register(MenuType.Morning, () => new MenuOffering(DishType.Entree, "eggs", OneOrder,
DishType.Side, "Toast", OneOrder,
DishType.Drink, "coffee", InfinteOrders));
MenuFactory <MenuOffering> .Register(MenuType.Night, () => new MenuOffering(DishType.Entree, "steak", OneOrder,
DishType.Side, "potato", InfinteOrders,
DishType.Drink, "wine", OneOrder,
DishType.Dessert, "cake", OneOrder));
// create types of offerings
var morningOfferings = MenuFactory <MenuOffering> .Create(MenuType.Morning);
var nightOfferings = MenuFactory <MenuOffering> .Create(MenuType.Night);
// add to container singleton
MenuContainer.GetInstance().Register(MenuType.Morning, morningOfferings);
MenuContainer.GetInstance().Register(MenuType.Night, nightOfferings);
}
public static MenuContainer GetInstance()
{
if (menuContainer == null)
{
lock (Locker)
{
if (menuContainer == null)
{
menuContainer = new MenuContainer();
}
}
}
return(menuContainer);
}
public string Process(string input_)
{
if (string.IsNullOrEmpty(input_))
{
throw new Exception("input is empty");
}
// parse
string[] parts = input_.Split(',');
var menuType = parts[0].Trim();
var offering = MenuContainer.GetInstance().GetMenuOffering(menuType);
IDictionary <int, int> orderSizeAllowed = new Dictionary <int, int>();
IDictionary <int, int> dishOrders = new Dictionary <int, int>();
IDictionary <int, int> dishNotValid = new Dictionary <int, int>();
// collect dish orders
for (int i = 1; i < parts.Length; ++i)
{
var dish = parts[i].Trim();
int nDish;
bool isNumeric = int.TryParse(dish, out nDish);
if (!isNumeric)
{
throw new Exception("Dish Type is not numeric");
}
try
{
var dishNameAndOrders = offering.GetOffering(nDish);
if (!orderSizeAllowed.ContainsKey(nDish))
{
orderSizeAllowed.Add(nDish, dishNameAndOrders.Item2);
}
if (!dishOrders.ContainsKey(nDish))
{
dishOrders.Add(nDish, 1);
}
else
{
dishOrders[nDish]++;
}
}
catch (Exception)
{
if (!dishNotValid.ContainsKey(nDish))
{
dishNotValid.Add(nDish, 1);
}
else
{
dishNotValid[nDish]++;
}
}
}
var sb = new StringBuilder();
var dishOrderList = dishOrders.Keys.ToList();
dishOrderList.Sort();
bool errorFound = false;
foreach (var dishOrdered in dishOrderList)
{
var dishNameAndOrders = offering.GetOffering(dishOrdered);
sb.Append(dishNameAndOrders.Item1);
if (dishOrders[dishOrdered] > dishNameAndOrders.Item2)
{
sb.Append(", error");
errorFound = true;
break;
}
if (dishOrders[dishOrdered] > 1)
{
sb.Append(string.Format("(x{0})", dishOrders[dishOrdered]));
}
sb.Append(", ");
}
if (!errorFound)
{
if (dishNotValid.Count > 0)
{
sb.Append("error");
}
}
string returnOutput = sb.ToString();
// remove ', ' if any
var trimEnd = returnOutput.TrimEnd(' ');
return(trimEnd.TrimEnd(','));
}
public string GetAllMenus()
{
return(MenuContainer.GetInstance().GetAllMenus());;
}
