using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

using System.IO;

using Microsoft.Research.DynamicDataDisplay;

using Microsoft.Research.DynamicDataDisplay.DataSources;

using System.Globalization;

using System.Reflection;



namespace CurrencyExchangeSample

{

	/// <summary>

	/// Interaction logic for Window1.xaml

	/// </summary>

	public partial class Window1 : Window

	{

		public Window1()

		{

			InitializeComponent();



			Loaded += new RoutedEventHandler(Window1_Loaded);

		}



		List<CurrencyInfo> usd;

		List<CurrencyInfo> eur;

		List<CurrencyInfo> gbp;

		List<CurrencyInfo> jpy;

		private void Window1_Loaded(object sender, RoutedEventArgs e)

		{

			Assembly assembly = Assembly.GetExecutingAssembly();



			usd = LoadCurrencyRates("usd.txt");

			eur = LoadCurrencyRates("eur.txt");

			gbp = LoadCurrencyRates("gbp.txt");

			jpy = LoadCurrencyRates("jpy.txt");



			Color[] colors = ColorHelper.CreateRandomColors(4);

			plotter.AddLineGraph(CreateCurrencyDataSource(usd), colors[0], 1, "RUB / $");

			plotter.AddLineGraph(CreateCurrencyDataSource(eur), colors[1], 1, "RUB / €");

			plotter.AddLineGraph(CreateCurrencyDataSource(gbp), colors[2], 1, "RUB / £");

			plotter.AddLineGraph(CreateCurrencyDataSource(jpy), colors[3], 1, "RUB / ¥");

		}



		private EnumerableDataSource<CurrencyInfo> CreateCurrencyDataSource(List<CurrencyInfo> rates)

		{

			EnumerableDataSource<CurrencyInfo> ds = new EnumerableDataSource<CurrencyInfo>(rates);

			ds.SetXMapping(ci => dateAxis.ConvertToDouble(ci.Date));

			ds.SetYMapping(ci => ci.Rate);

			return ds;

		}



		private static List<CurrencyInfo> LoadCurrencyRates(string fileName)

		{

			var assembly = Assembly.GetExecutingAssembly();

			using (Stream resourceStream = assembly.GetManifestResourceStream("CurrencyExchangeSample." + fileName))

			{

				using (StreamReader reader = new StreamReader(resourceStream))

				{

					var strings = reader.ReadToEnd().Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);



					var res = new List<CurrencyInfo>(strings.Length - 1);

					for (int i = 1; i < strings.Length; i++)

					{

						string line = strings[i];

						string[] subLines = line.Split('\t');



						DateTime date = DateTime.Parse(subLines[1]);

						double rate = Double.Parse(subLines[5], CultureInfo.InvariantCulture);



						res.Add(new CurrencyInfo { Date = date, Rate = rate });

					}



					return res;

				}

			}



		}

	}

}