using System;

namespace DesertPaintCodex.Models

{

    public class PaintColor

    {

        private const byte  LightTextValueCutoff = 150;

        private const float RedIntensity   = 0.299f;

        private const float GreenIntensity = 0.587f;

        private const float BlueIntensity  = 0.114f;

        public byte Red { get; set; }

        public byte Blue { get; set; }

        public byte Green { get; set; }

        public string Name { get; private set; }

        public bool UseWhiteText => Red * RedIntensity + Green * GreenIntensity + Blue * BlueIntensity < LightTextValueCutoff;

        public PaintColor()

        {

            Name  = "Undefined";

            Red   = 0;

            Green = 0;

            Blue  = 0;

        }

        public PaintColor(string name, string hexRed, string hexGreen, string hexBlue)

        {

            Name = name;

            Red =   byte.Parse(hexRed,   System.Globalization.NumberStyles.AllowHexSpecifier);

            Green = byte.Parse(hexGreen, System.Globalization.NumberStyles.AllowHexSpecifier);

            Blue =  byte.Parse(hexBlue,  System.Globalization.NumberStyles.AllowHexSpecifier);

        }

        public PaintColor(byte red, byte green, byte blue)

        {

            Name  = "Undefined";

            Red   = red;

            Green = green;

            Blue  = blue;

        }

        public PaintColor(PaintColor other)

        {

            Name  = other.Name;

            Red   = other.Red;

            Green = other.Green;

            Blue  = other.Blue;

        }

        public int GetDistanceSquared(PaintColor otherColor)

        {

            return (int)(Math.Pow(Red - otherColor.Red, 2) +

                Math.Pow(Green - otherColor.Green, 2) +

                Math.Pow(Blue - otherColor.Blue, 2));

        }

        public void Clear()

        {

            Red   = 0;

            Green = 0;

            Blue  = 0;

        }

        public void Set(PaintColor other)

        {

            Red   = other.Red;

            Green = other.Green;

            Blue  = other.Blue;

            Name  = other.Name;

        }

        public string ToHexString()

        {

            return "#" + Red.ToString("X2") + Green.ToString("X2") + Blue.ToString("X2");

        }

        public override string ToString()

        {

            return "[" + Name + ", " + Red + ", " + Green + ", " + Blue + "]";

        }

    }

}