using System;
using System.Collections.Generic;
using AibisDream.Kit;
using AibisDream.Utility;
using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
#endif

namespace AibisDream
{
    public class GlobalDataContainer : SingletonBase<GlobalDataContainer>
    {
        private Dictionary<Type, object> _dataDict;
        
        public override void OnSingletonInit()
        {
            _dataDict = new Dictionary<Type, object>();
            // 收集数据并初始化
            var globalDataTypes = CommonUtil.FindTypesWithAttribute<GlobalDataAttribute>();
            foreach (var globalDataType in globalDataTypes)
            {
                object instance = Activator.CreateInstance(globalDataType);
                _dataDict.Add(globalDataType, instance);
            }
        }
        
        public T GetData<T>() where T : class
        {
            if (_dataDict.TryGetValue(typeof(T), out var data))
            {
                return data as T;
            }

            Debug.LogError($"没有找到{typeof(T)}");
            return null;
        }

        /// <summary>
        /// 用于单例模式
        /// </summary>
        private GlobalDataContainer()
        {
#if UNITY_EDITOR
            EditorApplication.playModeStateChanged  += OnPlayModeStateChanged;
#endif
        }
        
#if UNITY_EDITOR
        private void OnPlayModeStateChanged(PlayModeStateChange state)
        {
            if (state == PlayModeStateChange.ExitingEditMode)
            {
                OnSingletonInit();
            }
        }
#endif
    }

    /// <summary>
    /// 全局数据属性
    /// </summary>
    [AttributeUsage(AttributeTargets.Class, Inherited = false)]
    public class GlobalDataAttribute : Attribute
    {
    }
}