using System.Collections;
using System.Collections.Generic;
using System.ComponentModel.Design;
using System.Diagnostics.Tracing;
using System.Linq;
using UnityEngine;
using UnityEngine.AI;
using UnityEngine.UIElements;

namespace WK
{
    //http://warmcat.org/chai/blog/?p=2343

    public abstract class CommandsGroup
    {

        public abstract class Command
        {
            public CommandID ID;
            public Command(CommandID id)
            {
                this.ID = id;
            }
            /// <summary>
            /// 执行命令
            /// </summary>
            public abstract void Execute();
            /// <summary>
            /// 注册命令的参数
            /// </summary>
            /// <param name="_param"></param>
            public abstract void Register(params object[] _param);
        }

        protected List<Command> commandQueue = new List<Command>();
        protected void AddCommand(Command cmd)
        {
            commandQueue.Add(cmd);
        }

        public CommandsGroup()
        {
            SetupCommands();
        }

        /// <summary>
        /// 填充 commandQueue
        /// </summary>
        protected abstract void SetupCommands();

        public void Execute()
        {
            foreach (Command e in commandQueue)
            {
                e.Execute();
            }
        }

        public void RegisterParams(params object[] data)
        {
            if (data.Length < 1)
                return;
            CommandID id = (CommandID)data[0];
            int len = data.Length;
            foreach (Command e in commandQueue)
            {
                if (e.ID == id)
                {
                    e.Register(data.Skip(1).Take(len - 1));
                    break;
                }
            }
        }
    }

    /*
    /// <summary>
    /// 主场景打开时执行的命令集合
    /// </summary>
    class MainSceneLoadCommandsGroup : CommandsGroup
    {
	    public MainSceneLoadCommandsGroup() : base()
	    {
		    // 设置需要执行的命令
 
		    AddCommand(new OpenPanelCommand());
		    // 其他命令
		    //AddCommand(new MessageBox());
		    //AddCommand(new OpenChest());
		    //...
	    }
    }
     
    */

}