using Godot;
using System.Collections.Generic;

namespace Rokojori
{ 
  [Tool]
  [GlobalClass, Icon("res://addons/rokojori_action_library/Icons/Flash.svg") ]
  public partial class RainbowGradient:GradientGenerator  
  { 
    [Export( PropertyHint.Range, "0,360" )]
    public float hueStart = 0;

    [Export( PropertyHint.Range, "0,100" )]
    public float saturation = 100f;

    [Export( PropertyHint.Range, "0,100" )]
    public float lightness = 50f;

    [Export( PropertyHint.Range, "0,10" )]
    public float intensity = 0f;

    [Export( PropertyHint.Range, "6,36" )]
    public int resolution = 6;
    [Export]
    public Gradient gradient;

    [ExportGroup("Output")]
    [ExportToolButton( "Show Output")]
    public Callable showOutputButton => Callable.From( ()=> outputGradient = GetGradient() );
    [Export]
    public Gradient outputGradient;

    public override Gradient GetGradient()
    {
      var colors = new List<Color>();

      for ( int i = 0; i < resolution; i++ )
      {
        var hue = i / (float)( resolution - 1 ) * 360f + hueStart;
        hue = MathX.Repeat( hue, 360f );

        var color = new HSLColor( hue, saturation / 100f, lightness / 100f );
        var rgb = color.ToRGBA();
        colors.Add( rgb.WithIntensity( intensity ) );
      }

      return GradientExtensions.Create( colors );

    }

     [ExportGroup("Repeat")]
    [Export]
    public float repeat = 1f;
    public override float GetRepeat()
    {
      return repeat;
    }

    [Export]
    public GradientExtensions.GradientRepeatMode repeatMode = GradientExtensions.GradientRepeatMode.Clamp;
    public override GradientExtensions.GradientRepeatMode GetRepeatMode()
    {
      return repeatMode;
    }

  }
  
}