// This file (EditArmyCommand.cs) is a part of the IBBoard.WarFoundry.API project and is copyright 2011 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.WarFoundry.API.Objects;
using IBBoard.Lang;

namespace IBBoard.WarFoundry.API.Commands
{
	public class EditArmyCommand : Command
	{
		private Army army;
		private string oldName;
		private int oldSize;

		public EditArmyCommand(Army toEdit)
		{
			army = toEdit;
		}

		public override bool CanExecute()
		{
			return army != null && (NewName != null || NewSize > 0);
		}

		public override bool Execute()
		{
			if (!army.HasDefaultName())
			{
				oldName = army.Name;
			}

			oldSize = army.MaxPoints;
			Redo();
			return true;
		}

		public override void Undo()
		{
			SetName(oldName);
			SetSize(oldSize);
		}

		public override void Redo()
		{
			SetName(NewName);
			SetSize(NewSize);
		}

		void SetName (string name)
		{
			if (NewName != null)
			{
				army.Name = name;
			}
		}

		void SetSize (int size)
		{
			if (NewSize > 0)
			{
				army.MaxPoints = size;
			}
		}

		public override string Name
		{
			get
			{
				return "Edit army";
			}
		}

		public override string Description
		{
			get
			{
				return Translation.GetTranslation("editArmyCommandDescription", "edit army name and/or size");
			}
		}

		public override string UndoDescription
		{
			get
			{
				return Translation.GetTranslation("editArmyCommandDescription", "revert army name and/or size");
			}
		}

		public string NewName { get; set; }

		public int NewSize { get; set; }
	}
}