namespace DaggerFramework
{
    // Based on https://github.com/ppr-game/PPR/blob/engine/PER.Util/src/Color.cs
    /// <summary>
    /// A record struct representing a color.
    /// </summary>
    public record struct Color
    {
        // TODO: add more HTML colors.
        public static Color AliceBlue = new(0xF0F8FF);
        public static Color AntiqueWhite = new(0xFAEBD7);
        public static Color Aqua = new(0x00FFFF);
        public static Color Aquamarine = new(0x7FFFD4);
        public static Color Azure = new(0xF0FFFF);
        public static Color Beige = new(0xF5F5DC);
        public static Color Bisque = new(0xFFE4C4);
        public static Color Black = new(0x000000);
        public static Color BlanchedAlmond = new(0xFFEBCD);
        public static Color Blue = new(0x0000FF);
        public static Color BlueViolet = new(0x8A2BE2);
        public static Color Brown = new(0xA52A2A);
        public static Color BurlyWood = new(0xDEB887);
        public static Color CadetBlue = new(0x5F9EA0);
        public static Color Chartreuse = new(0x7FFF00);
        public static Color Chocolate = new(0xD2691E);
        public static Color Coral = new(0xFF7F50);
        public static Color CornflowerBlue = new(0x6495ED);
        public static Color Cornsilk = new(0xFFF8DC);
        public static Color Crimson = new(0xDC143C);
        public static Color Cyan = new(0x00FFFF);
        public static Color DarkBlue = new(0x00008B);
        public static Color DarkCyan = new(0x008B8B);
        public static Color White = new(0xFFFFFF);
        public static Color Green = new(0x00FF00);
        public static Color Red = new(0xFF0000);

        public float R { get; set; }
        public float G { get; set; }
        public float B { get; set; }
        public float A { get; set; }

        public int Argb
        {
            get
            {
                int c = (ushort)Math.Round(A * 255f);
                c <<= 8;
                c |= (ushort)Math.Round(R * 255f);
                c <<= 8;
                c |= (ushort)Math.Round(G * 255f);
                c <<= 8;
                c |= (ushort)Math.Round(B * 255f);

                return c;
            }
        }

        public Color(float r, float g, float b, float a)
        {
            R = r;
            G = g;
            B = b;
            A = a;
        }

        public Color(byte r, byte g, byte b, byte a)
        {
            R = r / 255f;
            G = g / 255f;
            B = b / 255f;
            A = a / 255f;
        }

        public Color(int hex)
        {
            A = 1.0f;
            B = (hex & 0xFF) / 255.0f;
            hex >>= 8;
            G = (hex & 0xFF) / 255.0f;
            hex >>= 8;
            R = (hex & 0xFF) / 255.0f;
        }

        public Color Lightened(float amount)
        {
            var result = this;
            result.R = result.R + (1.0f - result.R) * amount;
            result.G = result.G + (1.0f - result.G) * amount;
            result.B = result.B + (1.0f - result.B) * amount;

            return result;
        }

        public Color Darkened(float amount)
        {
            var result = this;
            result.R = result.R * (1.0f - amount);
            result.G = result.G * (1.0f - amount);
            result.B = result.B * (1.0f - amount);

            return result;
        }

        public System.Drawing.Color ToSystemColor()
        {
            var result = System.Drawing.Color.FromArgb(Argb);
            return result;
        }
    }
}