using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using MbUnit.Framework;

namespace Spiking35.Test {
	public class HighSocietyCountryClub : ICountryClub {
		public HighSocietyCountryClub() {
			_membersOfTheHighlyExclusiveCountryClub = new List< IExclusiveMember >( );
		}

		public IEnumerable< IExclusiveMember > RosterOfMembers {
			get {
				foreach ( IExclusiveMember exclusiveMember in _membersOfTheHighlyExclusiveCountryClub ) {
					yield return exclusiveMember;
				}
			}
		}

		//public IEnumerable< IExclusiveMember > RosterOfMembers {
		//    get { return _membersOfTheHighlyExclusiveCountryClub; }
		//}

		//public IList< IExclusiveMember > Members {
		//    get { return _membersOfTheHighlyExclusiveCountryClub; }
		//}

		private IList< IExclusiveMember > _membersOfTheHighlyExclusiveCountryClub;
	}

	public class CountryClubBackDoor {
		public CountryClubBackDoor() {
			_club = new HighSocietyCountryClub( );
		}

		public void SneakIn() {
			IExclusiveMember ruffian = new Ruffian();
			//_club.Members.Add( ruffian ); // oops... who let the ruffian in?
			( ( List< IExclusiveMember > )_club.RosterOfMembers ).Add( ruffian ); // they did it again!
		}

		private ICountryClub _club;
	}

	internal class Ruffian : IExclusiveMember {}

	public interface IExclusiveMember {}

	public interface ICountryClub {
		//IList< IExclusiveMember > Members { get; }
		IEnumerable< IExclusiveMember > RosterOfMembers { get; }
	}

	public class ExclusiveMembersEnumerable : IEnumerable< IExclusiveMember > {
		public ExclusiveMembersEnumerable( IEnumerable< IExclusiveMember > members ) {
			_members = members;
		}

		IEnumerator< IExclusiveMember > IEnumerable< IExclusiveMember >.GetEnumerator() {
			return _members.GetEnumerator( );
		}

		public IEnumerator GetEnumerator() {
			return ( ( IEnumerable< IExclusiveMember > )this ).GetEnumerator( );
		}

		private readonly IEnumerable< IExclusiveMember > _members;
	}

	[TestFixture]
	public class HighSocietyCountryClubTest {
		[Test]
		public void Lets_check_out_the_rost_of_members_in_the_exclusive_country_club() {
			ICountryClub countryClub = new HighSocietyCountryClub( );
			IEnumerable< IExclusiveMember > rosterOfMembers = countryClub.RosterOfMembers;

			foreach ( IExclusiveMember exclusiveMember in rosterOfMembers ) {
				Console.Out.WriteLine( exclusiveMember );
			}
		}
	}

	public class HighSocietyMembersQueryable : IQueryable< IExclusiveMember > {
		IEnumerator< IExclusiveMember > IEnumerable< IExclusiveMember >.GetEnumerator() {
			throw new NotImplementedException( );
		}

		public IEnumerator GetEnumerator() {
			return ( ( IEnumerable< IExclusiveMember > )this ).GetEnumerator( );
		}

		public Expression Expression {
			get { throw new NotImplementedException( ); }
		}

		public Type ElementType {
			get { throw new NotImplementedException( ); }
		}

		public IQueryProvider Provider {
			get { throw new NotImplementedException( ); }
		}
	}
}