using System;
using System.Collections;
using System.Collections.Generic;
using Thousandto.Core.Asset;
using Thousandto.Core.Base;
using UnityEngine;

namespace Thousandto.Code.Center
{
    public class SceneRestoreTexManger
    {
        #region//私有变量
        private Dictionary<string, Texture> _cacheTex = new Dictionary<string, Texture>();
        #endregion

        #region//静态实例
        private static SceneRestoreTexManger _instance = null;
        public static SceneRestoreTexManger Instance
        {
            get
            {
                if (_instance == null)
                {
                    _instance = new SceneRestoreTexManger();
                }
                return _instance;
            }
        }
        #endregion

        public void SetTexture(string name, Action<Texture> action)
        {
            Texture tex = _cacheTex.TryGetValue(name, out tex) ? tex : null;
            if (tex == null)
            {
                LoadTexture(name, action);
            }
            else
            {
                if (action != null)
                {
                    action(tex);
                }
            }
        }

        public void ReleaseTexture(string path)
        {
            UnLoadTexture(path);
        }

        #region//私有函数
        private void LoadTexture(string name, Action<Texture> action)
        {
            string path = AssetUtils.GetImageAssetPath(ImageTypeCode.VFX, name);
            TextureManager.SharedInstance.LoadTexture(path, (info) =>
            {
                if (info != null && info.AssetObject != null)
                {
                    if (action != null)
                    {
                        action(info.AssetObject);
                    }
                    _cacheTex[path] = info.AssetObject;
                }
            });
        }

        private void UnLoadTexture(string name)
        {
            string path = AssetUtils.GetImageAssetPath(ImageTypeCode.VFX, name);
            TextureManager.SharedInstance.UnLoadTexture(path, UnLoadFinish, true);
        }

        private void UnLoadFinish(TextureInfo info)
        {
            if (info != null)
            {
                if (_cacheTex.ContainsKey(info.AssetPath))
                {
                    _cacheTex.Remove(info.AssetPath);
                }
            }
        }
        #endregion
    }
}