namespace DotNetOpenAuth.Samples.OAuthConsumerWpf {
	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Text;
	using System.Threading;
	using System.Threading.Tasks;
	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.Shapes;
	using System.Xml.Linq;
	using DotNetOpenAuth.ApplicationBlock;
	using DotNetOpenAuth.OAuth;

	/// <summary>
	/// Interaction logic for Authorize.xaml
	/// </summary>
	public partial class Authorize : Window {
		private Consumer consumer;

		internal Authorize(Consumer consumer, Func<Consumer, Task<Uri>> fetchUriCallback) {
			this.InitializeComponent();

			this.consumer = consumer;
			Cursor original = this.Cursor;
			this.Cursor = Cursors.Wait;
			Task.Run(async delegate {
				Uri browserAuthorizationLocation = await fetchUriCallback(this.consumer);
				System.Diagnostics.Process.Start(browserAuthorizationLocation.AbsoluteUri);
				await this.Dispatcher.BeginInvoke(new Action(() => {
					this.Cursor = original;
					finishButton.IsEnabled = true;
				}));
			});
		}

		internal AccessToken AccessToken { get; set; }

		private async void finishButton_Click(object sender, RoutedEventArgs e) {
			var grantedAccess = await this.consumer.ProcessUserAuthorizationAsync(this.verifierBox.Text);
			this.AccessToken = grantedAccess.AccessToken;
			DialogResult = true;
			Close();
		}

		private void cancelButton_Click(object sender, RoutedEventArgs e) {
			DialogResult = false;
			Close();
		}
	}
}