using DG.Tweening;
using UnityEngine;

public class CoverCamera : MonoBehaviour
{
    private static CoverCamera instance;

    private static int CoverCnt = 0;

    private GameObject goCover;
    private DOTweenAnimation dtaRotate;

    public static void Init()
    {
        if (Instance != null && instance.goCover == null)
        {
            instance.goCover = instance.gameObject;
            instance.dtaRotate = instance.transform.GetChild(0).GetChild(0).GetComponent<DOTweenAnimation>();
        }
    }

    public static void SetCamera(Camera camui)
    {
        instance.GetComponent<Canvas>().worldCamera = camui;
    }

    // 커버 상태.
    public static bool IsOn() => CoverCnt > 0;

    // 커버 켜기.
    public static void Hold()
    {
        CoverCnt++;
        if (!instance.goCover.activeSelf)
        {
            instance.dtaRotate.DOPlay();
            instance.goCover.SetActive(true);
        }
    }

    // 커버 끄기.
    public static void Release()
    {
        CoverCnt--;
        if (CoverCnt < 0)
            CoverCnt = 0;
        if (CoverCnt <= 0 && instance.goCover.activeSelf)
        {
            instance.dtaRotate.DOPause();
            instance.goCover.SetActive(false);
        }
    }

    public static void Reset()
    {
        CoverCnt = 0;
        instance.goCover.SetActive(false);
    }

    public static CoverCamera Instance
    {
        get
        {
            if (instance == null)
            {
                instance = FindObjectOfType(typeof(CoverCamera)) as CoverCamera;

                if (instance == null)
                {
                    instance = Instantiate(Resources.Load<CoverCamera>("CoverCamera"));
                    DontDestroyOnLoad(instance.gameObject);
                }
            }
            return instance;
        }
    }
}