// This file (RequirementOR.cs) is a part of the IBBoard.WarFoundry.API project and is copyright 2008, 2009 IBBoard.
//
// The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.

using System;
using System.Collections.Generic;
using IBBoard.Lang;
using IBBoard.WarFoundry.API.Objects;

namespace IBBoard.WarFoundry.API.Requirements
{
	/// <summary>
	/// Summary description for UnitRequirementOR.
	/// </summary>
	public class RequirementOR : AbstractRequirement
	{
		private static string or;

		static RequirementOR()
		{
			or = Translation.GetTranslation("requirement_or", true);

			if (or == null)
			{
				or = "{0} or {1}";
			}
		}

		private AbstractRequirement reqA, reqB;

		public RequirementOR(AbstractRequirement requirementA, AbstractRequirement requirementB)
		{
			reqA = requirementA;
			reqB = requirementB;
		}

		public override AbstractFailedRequirement CanAddToWarFoundryObject(WarFoundryObject obj)
		{		
			FailedRequirement failed = null;
			
			if (reqA.CanAddToWarFoundryObject(obj) !=null && reqB.CanAddToWarFoundryObject(obj)!=null)
			{
				failed = new FailedRequirement(this);
			}
			
			return failed;
		}

		public override AbstractFailedRequirement CanRemoveFromWarFoundryObject(WarFoundryObject obj)
		{		
			FailedRequirement failed = null;
			
			if (reqA.CanRemoveFromWarFoundryObject(obj)!=null && reqB.CanRemoveFromWarFoundryObject(obj)!=null)
			{
				failed = new FailedRequirement(this);
			}
			
			return failed;
		}

		public override string Description 
		{
			get { return String.Format(or, reqA.Description, reqB.Description); }
		}
	}
}