using System;

​

public abstract class Client

{

    public string Name { get; set; }

    public string Email { get; set; }

    public int? Age { get; set; }

    public bool accessDisabled { get; set; }

    public IAccessHandler AccessHandler { get; set; }

​

    public virtual bool HandleAccess()

    {

        return AccessHandler.getAccess();

    }

}

​

public class User : Client

{

    public int Reputation { get; set; }

​

    public User() 

    {

        AccessHandler = new HasReputation();

    }

​

    public override bool HandleAccess()

    {

        return AccessHandler.getAccess(Reputation, accessDisabled);

    }

}

​

public class Manager : Client

{

    public Manager()

    {

        AccessHandler = new HasAccessAutomatic();

    }

​

    public override bool HandleAccess()

    {

        return AccessHandler.getAccess(accessDisabled: accessDisabled);

    }

}

​

public class Admin : Client

{

    public Admin()

    {

        AccessHandler = new HasAccessAutomatic();

    }

​

    public override bool HandleAccess()

    {

        return AccessHandler.getAccess(accessDisabled: accessDisabled);

    }

}

​

public interface IAccessHandler

{

    public bool getAccess(int? Reputation = 0, bool accessDisabled = false);

}

​

public class HasReputation : IAccessHandler

{

    public bool getAccess(int? Reputation = 0, bool accessDisabled = false)

    {

        if (Reputation < 20 || accessDisabled == true)

        {

            return false;

        }

​

        return true;

    }

}

​

public class HasAccessAutomatic : IAccessHandler

{

    public bool getAccess(int? Reputation = 0, bool accessDisabled = false)

    {

        if (!accessDisabled)

        {

            return true;

        }

​

        return false;

    }

}

​

class Program

{

    static void Main(string[] args)

    {

        User lowRepUser = new User() { Reputation = 7, accessDisabled = false };

        User highRepBannedUser = new User() { Reputation = 53, accessDisabled = true };

        User accessUser = new User() { Reputation = 31, accessDisabled = false };

        Admin admin = new Admin() { accessDisabled = false };

        Manager manager = new Manager() { accessDisabled = false };

        Manager managerDisabled = new Manager() { accessDisabled = true };

​

        // false, low rep

        Console.WriteLine($"User access: {lowRepUser.HandleAccess()}");

​

        // false, banned despite high rep

        Console.WriteLine($"User access: {highRepBannedUser.HandleAccess()}");

​

        // true, sufficient reputation

        Console.WriteLine($"User access: {accessUser.HandleAccess()}");

​

        // true, admin

        Console.WriteLine($"Admin access: {admin.HandleAccess()}");

​

        // true, manager

        Console.WriteLine($"Manager access: {manager.HandleAccess()}");

​

        // false, access is disabled for this manager

        Console.WriteLine($"Manager access: {managerDisabled.HandleAccess()}");

​

    }

}