using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
namespace Xamarin.Forms.Core.UITests
{

	internal static class ParsingUtils 
	{
		public static Font ParseUIFont (string font) 
		{
			FontAttributes fontAttrs = FontAttributes.None;

			// Logger.LogLine ("TEST PARSING");

			if (font.Contains ("font-weight: bold;")) {
				// Logger.LogLine ("Found Bold");
				fontAttrs = FontAttributes.Bold;
			}
				
			return new Font ().WithAttributes (fontAttrs);
		}

		public static Color ParseUIColor (string backgroundColor)
		{
			var delimiters = new char[] { ' ' };
			string[] words = backgroundColor.Split (delimiters, StringSplitOptions.RemoveEmptyEntries);
			return new Color (double.Parse (words[1]), double.Parse (words[2]), double.Parse (words[3]), double.Parse (words[4]));
		}

		public static Point ParseCGPoint (object CGPoint) {
			var point = new Point { X = 0, Y = 0 };
			return point;
		}

		public static Matrix ParseCATransform3D (string CATransform3D)
		{
			// Logger.Log (CATransform3D);
			char[] delimiters = { '<', ' ', '>' };
			string[] words = CATransform3D.Split (delimiters, StringSplitOptions.RemoveEmptyEntries);

			List<double> numbers = new List<double> ();

			// Each number is represented by 2 blocks returned by server
			for (int i = 0; i < (words.Length - 1); i += 2) {
				string word = words[i] + words[i + 1];
				var number = Int64.Parse (word, NumberStyles.HexNumber);
				byte[] bytes = BitConverter.GetBytes (number);
				byte[] reversedBytes = bytes.Reverse ().ToArray ();
				double value = BitConverter.ToDouble (reversedBytes, 0);
				numbers.Add (value);
			}

			var transformationMatrix = new Matrix ();
			transformationMatrix.M00 = numbers[0];
			transformationMatrix.M01 = numbers[1];
			transformationMatrix.M02 = numbers[2];
			transformationMatrix.M03 = numbers[3];
			transformationMatrix.M10 = numbers[4];
			transformationMatrix.M11 = numbers[5];
			transformationMatrix.M12 = numbers[6];
			transformationMatrix.M13 = numbers[7];
			transformationMatrix.M20 = numbers[8];
			transformationMatrix.M21 = numbers[9];
			transformationMatrix.M22 = numbers[10];
			transformationMatrix.M23 = numbers[11];
			transformationMatrix.M30 = numbers[12];
			transformationMatrix.M31 = numbers[13];
			transformationMatrix.M32 = numbers[14];
			transformationMatrix.M33 = numbers[15];

			return transformationMatrix;
		}

	}

}