using SHADE;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SHADE_Scripting.UI
{
  public class SceneFadeInOut : Script
  {
    [SerializeField]
    private GameObject fadeUI;

    [Tooltip("If true, the panel fadeUI fades in (increasing alpha). If false, no fading")]
    public bool fadeIn;

    [Tooltip("If true, the panel fadeUI fades out (decreasing alpha). If false, no fading")]
    public bool fadeOut;

    [Tooltip("The alpha value of the UI that is faded")]
    public float alphaValue;

    [SerializeField]
    private float fadeInRate;

    [SerializeField]
    private float fadeOutRate;

    private Renderable fadeR;

    protected override void awake()
    {
      fadeR = fadeUI.GetComponent<Renderable>();
      alphaValue = fadeR.Material.GetProperty<float>("data.alpha");
    }

    protected override void start()
    {
      
    }

    protected override void update()
    {
      if (fadeR != null)
      {
        if (fadeIn) //fading in
        {
          alphaValue += fadeInRate * Time.DeltaTimeF;
          if (alphaValue >= 1.0f) alphaValue = 1.0f;
        }

        if (fadeOut) //fading out
        {
          alphaValue -= fadeOutRate * Time.DeltaTimeF;
          if (alphaValue <= 0.0f) alphaValue = 0.0f;
        }

        fadeR.Material.SetProperty<float>("data.alpha", alphaValue);
      }
    }
  }
}