using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using UnityEngine.SceneManagement;

public class UIManager : MonoBehaviour {

    public static UIManager instance;

    #region 变量声明

    //撤销全部按钮
    public Button RevokeAll_btn;

    //撤销按钮
    public Button Revoke_btn;

    RaycastHit _Hit;

    Ray _Ray;
    #endregion

    #region 私有方法

    private void Awake()
    {
        instance = this;

        BtnAddClick();
    }

    private void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {
            _Ray = Camera.main.ScreenPointToRay(Input.mousePosition);

            if (!EventSystem.current.IsPointerOverGameObject())
            {
                if (Physics.Raycast(_Ray, out _Hit))
                {
                    DeviceStateManager.Instance.AddObjToPool(_Hit.transform.gameObject);
                }
            }
        }

        //相机移动
        CameraMove();
    }

    /// <summary>
    /// 给Button添加事件
    /// </summary>
    private void BtnAddClick()
    {
        RevokeAll_btn.onClick.AddListener(RevokeAllBtnClick);

        Revoke_btn.onClick.AddListener(RevokeBtnClick);

    }

    private void OnOriginalDisplayToggleClick(bool isOn)
    {
        if (isOn)
        {
            RevokeAll_btn.gameObject.SetActive(false);
            Revoke_btn.gameObject.SetActive(false);

            RevokeAllBtnClick();
        }
        else
        {
            RevokeAll_btn.gameObject.SetActive(true);
            Revoke_btn.gameObject.SetActive(true);
        }
    }


    /// <summary>
    /// 撤销上一步操作
    /// </summary>
    private void RevokeBtnClick()
    {
        DeviceStateManager.Instance.RemoveObjToPool();
    }

    /// <summary>
    /// 退出操作
    /// </summary>
    private void CloseButtonClick()
    {
        Application.Quit();
        //SceneManager.LoadScene("MainScene");
        //QILunjiManager.Instance.RemoveAllFromPool();
    }

    /// <summary>
    /// 撤销所有操作
    /// </summary>
    private void RevokeAllBtnClick()
    {
        DeviceStateManager.Instance.RemoveAllFromPool();
    }

    /// <summary>
    /// 相机移动
    /// </summary>
    private void CameraMove()
    {
        //transform.Translate(Input.GetAxis("Horizontal") * Time.deltaTime * 10f, 0, 0);
        //transform.Translate(0, 0, Input.GetAxis("Vertical") * Time.deltaTime * 10f);

        //if (Input.GetMouseButton(1))
        //{

        //    _Rota.x -= Input.GetAxis("Mouse Y") * 60f * Time.deltaTime;
        //    _Rota.y += Input.GetAxis("Mouse X") * 60f * Time.deltaTime;
        //    Quaternion Q = Quaternion.Euler(_Rota);
        //    transform.rotation = Q;

        //}

    }

    #endregion

}