//Helper method to verify if all the ingredients are available for a particular beverage
private IEnumerable <MissingIngredients> CheckMissingIngredients(MachineVM model)
{
List <Ingredient> itemCount = model.availableItems;
IList <MissingIngredients> result = new List <MissingIngredients>();
try
{
foreach (var beverage in model.beverages)
{
MissingIngredients product = new MissingIngredients();
List <string> prodIngredients = new List <string>();
foreach (var item in beverage.ingredients)
{
if (!itemCount.Any(o => o.name == item.name))
{
if (string.IsNullOrEmpty(product.beverageName))
{
product.beverageName = beverage.name;
prodIngredients.Add(item.name);
}
else
{
prodIngredients.Add(item.name);
}
}
}
if (product.beverageName != null)
{
product.ingredients = prodIngredients;
result.Add(product);
}
}
}
catch (Exception ex)
{
throw ex;
}
return(result);
}
//Main method to process the inputs of current test case and return result accordingly
public void ProcessBeverage(MachineVM model)
{
if (model != null)
{
List <Ingredient> itemCount = AvailableIngredient.Ingredients;
int freeOutlets = model.outlet;
//Check if All ingredients are present for the given beverages;
IEnumerable <MissingIngredients> impossibleBeverages = CheckMissingIngredients(model);
//Check if it is possible to make each given item through the coffee machine
//Print result accordingly
foreach (var beverage in model.beverages)
{
if (impossibleBeverages != null && impossibleBeverages.Any(b => b.beverageName == beverage.name))
{
MissingIngredients item = impossibleBeverages.Where(b => b.beverageName == beverage.name).First();
Console.WriteLine(beverage.name + " cannot be prepared because " + item.ingredients.First() + " is not available");
}
else
{
//Check if coffee machine outlets are available
if (freeOutlets > 0)
{
bool canPrepare = true;
bool printResult = false;
foreach (var item in beverage.ingredients)
{
if (itemCount.Any(o => o.name == item.name))
{
var currentItem = itemCount.FirstOrDefault(o => o.name == item.name);
if (currentItem.quantity >= item.quantity)
{
currentItem.quantity -= item.quantity;
}
else
{
canPrepare = false;
if (!printResult)
{
Console.WriteLine(beverage.name + " cannot be prepared because " + item.name + " is not sufficient");
printResult = true;
}
_repo.UpdateLowIngredientIndicator(currentItem);
}
}
}
if (canPrepare)
{
freeOutlets--;
Console.WriteLine(beverage.name + " is prepared");
}
}
else
{
Console.WriteLine(beverage.name + " cannot be prepared as free outlet is not available");
}
}
}
}
else
{
Console.WriteLine("Invalid input data");
Console.ReadLine();
return;
}
Console.WriteLine();
_repo.ShowLowIngredientIndicator();
Console.WriteLine();
Console.WriteLine("Press Enter for next test case...\n\n\n");
Console.ReadLine();
}