using Sandbox.Graphics;
using Sandbox.Graphics.GUI;
using VRage.Utils;
using VRageMath;

namespace PluginLoader.GUI.GuiControls;

// From Sandbox.Game.Screens.Helpers.MyGuiControlRating
internal class RatingControl : MyGuiControlBase
{
    private readonly float m_space = 8f;

    public string EmptyTexture = "Textures\\GUI\\Icons\\Rating\\NoStar.png";

    public string FilledTexture = "Textures\\GUI\\Icons\\Rating\\FullStar.png";

    public string HalfFilledTexture = "Textures\\GUI\\Icons\\Rating\\HalfStar.png";

    private int m_maxValue;
    private readonly Vector2 m_textureSize = new(32f);

    public RatingControl(int value = 0, int maxValue = 10)
    {
        Value = value;
        m_maxValue = maxValue;
        BackgroundTexture = null;
        ColorMask = Vector4.One;
    }

    public int MaxValue
    {
        get => m_maxValue;
        set
        {
            m_maxValue = value;
            RecalculateSize();
        }
    }

    public int Value { get; set; }

    private void RecalculateSize()
    {
        var vector = MyGuiManager.GetHudNormalizedSizeFromPixelSize(m_textureSize) * new Vector2(0.75f, 1f);
        var hudNormalizedSizeFromPixelSize = MyGuiManager.GetHudNormalizedSizeFromPixelSize(new(m_space * 0.75f, 0f));
        Size = new((vector.X + hudNormalizedSizeFromPixelSize.X) * m_maxValue, vector.Y);
    }

    public float GetWidth()
    {
        var num = MyGuiManager.GetHudNormalizedSizeFromPixelSize(m_textureSize).X * 0.75f;
        var num2 = MyGuiManager.GetHudNormalizedSizeFromPixelSize(new(m_space * 0.75f, 0f)).X;
        return (num + num2) * MaxValue / 2f;
    }

    public override void Draw(float transitionAlpha, float backgroundTransitionAlpha)
    {
        base.Draw(transitionAlpha, backgroundTransitionAlpha);
        if (MaxValue <= 0) return;
        var normalizedSize = MyGuiManager.GetHudNormalizedSizeFromPixelSize(m_textureSize) * new Vector2(0.75f, 1f);
        var hudNormalizedSizeFromPixelSize = MyGuiManager.GetHudNormalizedSizeFromPixelSize(new(m_space * 0.75f, 0f));
        var vector = GetPositionAbsoluteTopLeft() + new Vector2(0f, (Size.Y - normalizedSize.Y) / 2f);
        var vector2 = new Vector2((normalizedSize.X + hudNormalizedSizeFromPixelSize.X) * 0.5f, normalizedSize.Y);
        for (var i = 0; i < MaxValue; i += 2)
        {
            var normalizedCoord = vector + new Vector2(vector2.X * i, 0f);
            if (i == Value - 1)
                MyGuiManager.DrawSpriteBatch(HalfFilledTexture, normalizedCoord, normalizedSize,
                                             ApplyColorMaskModifiers(ColorMask, Enabled, transitionAlpha),
                                             MyGuiDrawAlignEnum.HORISONTAL_LEFT_AND_VERTICAL_TOP, false, false);
            else if (i < Value)
                MyGuiManager.DrawSpriteBatch(FilledTexture, normalizedCoord, normalizedSize,
                                             ApplyColorMaskModifiers(ColorMask, Enabled, transitionAlpha),
                                             MyGuiDrawAlignEnum.HORISONTAL_LEFT_AND_VERTICAL_TOP, false, false);
            else
                MyGuiManager.DrawSpriteBatch(EmptyTexture, normalizedCoord, normalizedSize,
                                             ApplyColorMaskModifiers(ColorMask, Enabled, transitionAlpha),
                                             MyGuiDrawAlignEnum.HORISONTAL_LEFT_AND_VERTICAL_TOP, false, false);
        }
    }
}