using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnityEngine;
using UnityEngine.UI;


public class LoadUIModelHelper : MonoSingleton<LoadUIModelHelper>
{

    /// <summary>
    /// 单键
    /// </summary>
    private static LoadUIModelHelper mInst = null;
    /// <summary>
    /// WindowsObjDict 列表
    /// </summary>
    private Dictionary<string, GameObject> WindowsObjDict = new Dictionary<string, GameObject>();
    /// <summary>
    /// 获取单键实例
    /// </summary>
    /// <returns>单键实例</returns>
    public static LoadUIModelHelper Instance()
    {
        if (null == mInst)
        {
            GameObject obj = new GameObject("LoadUIModelHelper");
            mInst = obj.AddComponent<LoadUIModelHelper>();
            DontDestroyOnLoad(obj);
        }

        return mInst;
    }
    /// <summary>
    /// 初始化
    /// </summary>
    private void Awake()
    {
        mInst = this;
        // 切换关卡时不删除
        DontDestroyOnLoad(this);
    }
    /// <summary>
    /// 单键初始化
    /// </summary>
    protected override void OnAwake()
    {
        base.OnAwake();
    }

    /// <summary>
    /// 单键销毁
    /// </summary>
    protected override void DoOnDestroy()
    {
        base.DoOnDestroy();
    }
    /// <summary>
    /// 
    /// </summary>
    /// <param name="name">模型的名称</param>
    /// <param name="ac">模型加载成功之后的回调</param>
    public void LoadFighterModel(string name, Action<GameObject> ac)
    {
        //---------------
        if (WindowsObjDict.ContainsKey(name))
        {
            GameObject model = WindowsObjDict[name];
            model.transform.localRotation = Quaternion.identity;
            model.transform.Rotate(Vector3.up * 180);
            model.SetActive(true);

            if (ac != null)
                ac(model);
        }
        else
        {
            ResourceHelper.Instance.LoadAssetBundle(name, (AssetBundle ab) =>
              {
                  GameObject obj = (GameObject)ab.LoadAsset(name);

                  if (obj != null)
                  {
                      GameObject model = (GameObject)Instantiate(obj);
                      model.transform.SetParent(this.transform);
                      model.transform.localScale = Vector3.one;
                      model.transform.localPosition = new Vector3(0, -2, 5);
                      model.transform.localRotation = Quaternion.identity;
                      model.transform.Rotate(Vector3.up * 180);

                      Transform[] all = model.GetComponentsInChildren<Transform>();

                      foreach (Transform rc in all)
                      {
                          rc.gameObject.layer = LayerMask.NameToLayer("UIModel"); //指定Layer 
                      }

                      Transform fightFlag = FindTransform(model.transform, "IsFighting");
                      if (fightFlag != null)
                      {
                          fightFlag.gameObject.SetActive(false);
                      }
                      WindowsObjDict.Add(name, model);
                      if (ac != null)
                          ac(model);
                  }
                  else
                  {
                      LogHelper.LogWarning("读取召唤兽模型失败 " + name);
                  }
              });
        }
    }

    /// <summary>
    /// 查找Transform
    /// </summary>
    /// <param name="tran">父级</param>
    /// <param name="name">名称</param>
    /// <returns></returns>
    private Transform FindTransform(Transform tran, string name)
    {
        Transform[] trans = tran.GetComponentsInChildren<Transform>();
        for (int i = 0; i < trans.Length; i++)
        {
            if (trans[i].name == name)
            {
                return trans[i];
            }
        }

        return null;
    }

    /// <summary>
    /// 关闭所有panel
    /// </summary>
    public void CloseAllHeroModel()
    {
        List<string> KeyList = new List<string>(WindowsObjDict.Keys);
        for (int i = 0; i < KeyList.Count; i++)
        {
            CloseSomeOneHeroModel(KeyList[i]);
        }
    }
    /// <summary>
    /// 关闭指定panel
    /// </summary>
    /// <param name="name">panel名称</param>
    public void CloseSomeOneHeroModel(string name)
    {
        if (WindowsObjDict.ContainsKey(name))
        {
            WindowsObjDict[name].SetActive(false);
        }
    }
    /// <summary>
    /// 卸载界面资源
    /// </summary>
    /// <param name="name">界面名称</param>
    public void UnloadSomeOneHeroAssets(string name)
    {
        if (WindowsObjDict.ContainsKey(name))
        {
            Destroy(WindowsObjDict[name]);
            WindowsObjDict.Remove(name);
        }
    }
    /// <summary>
    /// 卸载所有加载的界面资源
    /// </summary>
    public void UnloadAllHeroAssets()
    {
        List<string> KeyList = new List<string>(WindowsObjDict.Keys);
        for (int i = 0; i < KeyList.Count; i++)
        {
            UnloadSomeOneHeroAssets(KeyList[i]);
        }
    }
    /// <summary>
    ///  传递参数为鼠标在屏幕拖拽的距离
    ///  此函数备用～ 旋转人物模型
    /// </summary>
    /// <param name="direction"></param>
    public void OnRotation(string modelName, Vector2 direction, int operateWidth)
    {
        if (WindowsObjDict.ContainsKey(modelName))
        {
            GameObject model = WindowsObjDict[modelName];
            float speed = 360.0f * (Mathf.Abs(direction.x) / operateWidth) * Mathf.CeilToInt(direction.normalized.x) * -1;

            RectTransform rc = model.gameObject.GetComponent<RectTransform>();
            model.transform.Rotate(Vector3.up * speed);
        }
    }
}