// This file (RemoveUnitCommand.cs) is a part of the IBBoard.WarFoundry.API project and is copyright 2007, 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 IBBoard.Commands;
using IBBoard.Lang;
using IBBoard.WarFoundry.API.Objects;

namespace IBBoard.WarFoundry.API.Commands
{
	/// <summary>
	/// Summary description for RemoveUnitCommand.
	/// </summary>
	public class RemoveUnitCommand : Command
	{
		private Unit unit;
		private ArmyCategory cat;
		private string description;
		private string undoDescription;

		public RemoveUnitCommand(Unit toRemove)
		{
			unit = toRemove;
			cat = unit.Category;
		}

		public override bool CanExecute()
		{
			return (unit!=null);
		}

		public override string Description
		{
			get
			{
				if (description == null)
				{
					description = Translation.GetTranslation("removeUnitCommandDescription", "remove {0} from the army", unit.Name);
				}
				
				return description;
			}
		}

		public override string UndoDescription
		{
			get
			{
				if (undoDescription == null)
				{
					undoDescription = Translation.GetTranslation("removeUnitCommandUndoDescription", "re-add {0} to the army", unit.Name);
				}
				
				return undoDescription;
			}
		}

		public override bool Execute()
		{
			this.Redo();
			return true;
		}

		public override void Redo()
		{
			cat.RemoveUnit(unit);
		}

		public override void Undo()
		{
			cat.AddUnit(unit);
		}

		public override string Name
		{
			get { return "Remove unit"; }
		}
	}
}