using Inheritance;

namespace CovarianceContravariance;

class Program
{
  static void Main(string[] args)
  {
    List<Car> cars = new List<Car>{
      new Car("Coupe", 200, 3),
      new Car("Wagon", 100, 5),
      new Car("Limousine", 150, 4),
      new ElectricCar("Electric Hatchback", 148, 5, 40)
    };
    PrintVehicles(cars);
    
    Comparison<Vehicle> comparisonFunction = (a, b) => -a.HorsePower.CompareTo(b.HorsePower);
    IComparer<Vehicle> comparer = Comparer<Vehicle>.Create(comparisonFunction);

    PrintBetterCar(cars[2], cars[3], comparer);
    PrintBetterCar(cars.Skip(2).First(), cars.Last(), comparisonFunction);

    PrintBetterCar(cars[2], cars[3], (a, b) => b.Doors - a.Doors);
  }

  static void PrintVehicles(IEnumerable<Vehicle> vehicles)
  {
    foreach (var vehicle in vehicles)
    {
      Console.WriteLine("\t " + vehicle.Model);
    }
  }

  static void PrintBetterCar(Car a, Car b, IComparer<Car> comparer)
  {
    int result = comparer.Compare(a, b);
    string betterModel = result <= 0 ? a.Model : b.Model;
    string worseModel = result <= 0 ? b.Model : a.Model;
    Console.WriteLine($"\t{betterModel} is better or equal than {worseModel}");
  }

  static void PrintBetterCar(Car a, Car b, Comparison<Car> comparer)
  {
    int result = comparer(a, b);
    string betterModel = result <= 0 ? a.Model : b.Model;
    string worseModel = result <= 0 ? b.Model : a.Model;
    Console.WriteLine($"\t{betterModel} is better or equal than {worseModel}");
  }
}