#region Copyright & License Information
/*
 * Copyright 2007-2018 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version. For more
 * information, see COPYING.
 */
#endregion

using System.Collections.Generic;

namespace OpenRA.Mods.Common.UpdateRules.Rules
{
    public class RenameEmitInfantryOnSell : UpdateRule
    {
        public override string Name { get { return "EmitInfantryOnSell renamed to SpawnActorsOnSell"; } }
        public override string Description
        {
            get
            {
                return "The EmitInfantryOnSell trait was renamed to SpawnActorsOnSell and the default\n" +
                    "actor type to spawn was removed. Uses of the old traits and defaults are updated\n" +
                    "to account for this.";
            }
        }

        public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNode actorNode)
        {
            foreach (var uneios in actorNode.ChildrenMatching("-EmitInfantryOnSell"))
                uneios.RenameKeyPreservingSuffix("-SpawnActorsOnSell");

            foreach (var eios in actorNode.ChildrenMatching("EmitInfantryOnSell"))
            {
                eios.RenameKeyPreservingSuffix("SpawnActorsOnSell");
                var actortypes = eios.LastChildMatching("ActorTypes");
                if (actortypes == null)
                    eios.AddNode("ActorTypes", "e1");
            }

            yield break;
        }
    }
}