using System.Collections.Generic;
using System.Windows.Controls;
using Calculator.Desktop.UI.Controls;
using Calculator.Domain;
using Calculator.Infrastructure.Extensions;
using Calculator.Presentation.Commands;
using Calculator.Presentation.Controls;
using Calculator.Presentation.Views;

namespace Calculator.Desktop.UI {
	public partial class MainShell : ICalculatorView {
		public MainShell() {
			InitializeComponent( );
			buttonsOnScreen = new List< IClickableControl >
			                  	{
			                  		From( uxButtonZero ),
			                  		From( uxButtonOne ),
			                  		From( uxButtonTwo ),
			                  		From( uxButtonThree ),
			                  		From( uxButtonFour ),
			                  		From( uxButtonFive ),
			                  		From( uxButtonSix ),
			                  		From( uxButtonSeven ),
			                  		From( uxButtonEight ),
			                  		From( uxButtonNine )
			                  	};
		}

		public void Display( INumber resultToDisplay ) {
			uxResultToDisplay.Content = resultToDisplay;
		}

		public void BindToCommands( IEnumerable< IAppendDigitCommand > commandsToBindTo ) {
			foreach ( var command in commandsToBindTo ) {
				buttonsOnScreen.WhereItemMatches( command ).BindClickTo( command );
			}
		}

		private IClickableControl From( Button button ) {
			return new ButtonControl( button );
		}

		private readonly IEnumerable< IClickableControl > buttonsOnScreen;
	}
}