using System;
using System.Collections.Generic;
using System.Linq;
using Windows.Data.Xml.Dom;
using Windows.UI;

namespace FoxTube
{
    public static class Extensions
    {
        public static Uri ToUri(this string url)
        {
            try { return new Uri(url); }
            catch { return null; }
        }

        public static XmlDocument ToXml(this string text)
        {
            XmlDocument doc = new XmlDocument();
            try 
            {
                doc.LoadXml(text);
                return doc;
            }
            catch { return null; }
        }

        public static bool Belongs<T>(this T obj, params T[] args) =>
            args.Contains(obj);

        public static string ToHex(this Color color) =>
            $"#{color.R:X}{color.G:X}{color.B:X}";

        public static Color FromHex(this Color parent, string hex)
        {
            hex = hex.Replace("#", "");
            List<byte> values = new List<byte>();
            for(int k = 0; k < hex.Length; k++)
                values.Add(byte.Parse(string.Join("", hex[k], hex[++k]), System.Globalization.NumberStyles.HexNumber));

            return hex.Length switch
            {
                6 => Color.FromArgb(255, values[0], values[1], values[2]),
                8 => Color.FromArgb(values[0], values[1], values[2], values[3]),
                _ => Colors.Black
            };
        }
    }
}