using System;
using System.Collections.Generic;
using System.Reflection;
using Godot;

public partial class ActivityObject
{
    private static bool _initState = false;

    /// <summary>
    /// 初始化调用, 开始扫描当前程序集, 并自动注册 ActivityObject 物体
    /// </summary>
    public static void InitActivity()
    {
        if (_initState)
        {
            return;
        }

        _initState = true;

    }

    /// <summary>
    /// 通过 ItemId 实例化 ActivityObject 对象
    /// </summary>
    public static ActivityObject Create(string itemId)
    {
        // var world = GameApplication.Instance.World;
        // if (world == null)
        // {
        //     throw new Exception("实例化 ActivityObject 前请先调用 'GameApplication.Instance.CreateNewWorld()' 初始化 World 对象");
        // }
        // if (_activityRegisterMap.TryGetValue(itemId, out var item))
        // {
        //     var instance = item.CallBack();
        //     instance._InitNode(item.RegisterActivity.ItemId, item.RegisterActivity.PrefabPath, world);
        //     item.RegisterActivity.CustomHandler(instance);
        //     return instance;
        // }
        return null;
    }

    /// <summary>
    /// 通过 ItemId 实例化 ActivityObject 对象
    /// </summary>
    public static T Create<T>(string itemId) where T : ActivityObject
    {
        var instance = Create(itemId);
        if (instance != null)
        {
            return (T)instance;
        }
        GD.PrintErr("创建实例失败, 未找到id为'" + itemId + "'的物体!");
        return null;
    }
}