using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Rendering.HighDefinition;

public class NaturalLightMovement : MonoBehaviour
{
    public GameObject directionalLightGO;
    private HDAdditionalLightData directionalLight;

    //Default values:
    private float intensityDefaultValue;
    private float elevationDefaultValue;
    private float rotationDefaultValue;
    private float ambientLightDefaultValue;
    private float ambientLightVolumetricDimmerDefaultValue;
    //---------------------------------------------------

    [Header("UI")]
    public Slider _intensity;
    public Slider _elevation;
    public Slider _rotation;
    public Slider _ambientLight;

    private float directionalLightRotZDefaultValue;

    private bool _setDefaultValues = true;

    private static NaturalLightMovement _instance;
    public static NaturalLightMovement GetInstance() { return _instance; }

    private void Awake()
    {
        if (!_instance)
        {
            _instance = this;
        }

        if (directionalLightGO == null)
        {
            directionalLightGO = GameObject.FindGameObjectWithTag("MainDirectionalLight");
        }
        directionalLight = directionalLightGO.transform.GetComponent<HDAdditionalLightData>();
        SetDefaultValues();
    }

    private void Start()
    {
        intensityDefaultValue = _intensity.value;
        elevationDefaultValue = _elevation.value;
        rotationDefaultValue = _rotation.value;
        ambientLightDefaultValue = _ambientLight.value;
        ambientLightVolumetricDimmerDefaultValue = directionalLight.volumetricDimmer;

        directionalLightRotZDefaultValue = directionalLightGO.transform.localEulerAngles.z;
        print("natural light Default values Updated");
    }

    public void RestoreDirectionalLightDefaultValues() 
    {
        directionalLight.intensity = intensityDefaultValue;
        directionalLightGO.transform.localEulerAngles = new Vector3(elevationDefaultValue, rotationDefaultValue, directionalLightRotZDefaultValue);
        //directionalLight.SetLightDimmer(ambientLightDefaultValue, ambientLightVolumetricDimmerDefaultValue);
        directionalLight.lightDimmer = ambientLightDefaultValue;
        directionalLight.enabled = false;
        directionalLight.enabled = true;
        _setDefaultValues = true;
        SetDefaultValues();
    }

    public void SetDefaultValues()
    {
        if (_setDefaultValues)
        {
            _intensity.value = directionalLight.intensity;
            _elevation.value = directionalLightGO.transform.localEulerAngles.x;
            _rotation.value = directionalLightGO.transform.localEulerAngles.y;
            _ambientLight.value = directionalLight.lightDimmer;
            directionalLightRotZDefaultValue = directionalLightGO.transform.localEulerAngles.z;
            _setDefaultValues = false;
        }
    }

    //public void SaveDefaultDirectionalLightRotation()
    //{
    //    directionalLightDefaultRotation = directionalLight.transform.rotation;
    //}

    //public void LoadDefaultDirectionalLightRotation()
    //{
    //    directionalLight.transform.rotation = directionalLightDefaultRotation;
    //}

    public void UpdateNaturalLightValues()
    {
        directionalLight.intensity = _intensity.value;
        directionalLightGO.transform.localEulerAngles = new Vector3(_elevation.value, _rotation.value, directionalLightRotZDefaultValue); //Elevation & rotation sliders.
        //directionalLight.SetLightDimmer(_ambientLight.value, ambientLightVolumetricDimmerDefaultValue);
        directionalLight.lightDimmer = _ambientLight.value;
        directionalLight.UpdateAllLightValues();
    }

}