using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.XR.ARFoundation;

public class ImageLibraryManager : MonoBehaviour
{
    public Text text;

    public ARTrackedImageManager ImagerManager;

    public List<ARTrackedImage> listARTrackedImage;

    private ARTrackedImage oldTrackedImage;
    public bool state = false;

    private void Awake()
    {
        
    }
    public void Start()
    {
        listARTrackedImage = new List<ARTrackedImage>();
        oldTrackedImage = null;
        ImagerManager.trackedImagesChanged += OnTrackedImagesChanged;
    }

    private void OnDisable()
    {
        ImagerManager.trackedImagesChanged -= OnTrackedImagesChanged;
    }
    private void OnTrackedImagesChanged(ARTrackedImagesChangedEventArgs eventArgs)
    {
        foreach (var trackedImage in eventArgs.added)
        {
            if (!listARTrackedImage.Contains(trackedImage))
                listARTrackedImage.Add(trackedImage);
            
            Debug.Log(trackedImage.name);
                if (oldTrackedImage != trackedImage)
                {
                    oldTrackedImage = trackedImage;

                    VuforialControl.Instance.TrackingFound(trackedImage.transform, int.Parse(trackedImage.referenceImage.name), 0);
                }

            
        }
    }

    

    private void Update()
    {
        if (oldTrackedImage != null && oldTrackedImage.trackingState != UnityEngine.XR.ARSubsystems.TrackingState.Tracking)
        {
            // 离开识别图

            Debug.Log(" Lost  " + oldTrackedImage.name);
            VuforialControl.Instance.TrackingLost(int.Parse(oldTrackedImage.referenceImage.name));
            oldTrackedImage = null;
        }

        foreach (var trackedImage in ImagerManager.trackables)
        {
            //  Debug.Log($"Image: {trackedImage.referenceImage.name} is at " +
            //          $"{trackedImage.transform.position}"+ $"  {trackedImage.trackingState.ToString()} ");

            if (!listARTrackedImage.Contains(trackedImage))
                listARTrackedImage.Add(trackedImage);

            if (trackedImage.trackingState == UnityEngine.XR.ARSubsystems.TrackingState.Tracking)
            {
                //  Debug.Log(" This is   " + trackedImage.referenceImage.name );

                //if (oldTrackedImage != null && oldTrackedImage != trackedImage)
                //{

                //    // 切换操作


                //    oldTrackedImage = trackedImage;

                //    VuforialControl.Instance.TrackingFound(oldTrackedImage.transform, int.Parse(oldTrackedImage.referenceImage.name), 0);
                //}
                //else if (oldTrackedImage != trackedImage)
                //{
                //    // 第一次识别
                //    oldTrackedImage = trackedImage;
                //    VuforialControl.Instance.TrackingFound(oldTrackedImage.transform, int.Parse(oldTrackedImage.referenceImage.name), 0);
                //}

                if (oldTrackedImage != trackedImage)
                {
                    oldTrackedImage = trackedImage;

                    VuforialControl.Instance.TrackingFound(trackedImage.transform, int.Parse(trackedImage.referenceImage.name), 0);
                }

            }

        }



        if (listARTrackedImage.Count <1)
        {
            
            return;
        }
        
        



       //if(listARTrackedImage[0].trackingState== UnityEngine.XR.ARSubsystems.TrackingState.Tracking)
       // {
       //     state = true;
       //     // 跟踪
       // }
       //else if (listARTrackedImage[0].trackingState != UnityEngine.XR.ARSubsystems.TrackingState.Tracking&& state )
       // {
       //     state = false;
       //     // 暂停跟踪

       // }


    }


}