1 files changed, 54 insertions, 0 deletions
diff --git a/src/app/Cmpp298.Assignment3.Desktop.Presentation/NewInvoicePresenter.cs b/src/app/Cmpp298.Assignment3.Desktop.Presentation/NewInvoicePresenter.cs
new file mode 100644
index 0000000..83f30dc
--- /dev/null
+++ b/src/app/Cmpp298.Assignment3.Desktop.Presentation/NewInvoicePresenter.cs
@@ -0,0 +1,54 @@
+using System;
+using Cmpp298.Assignment3.Domain;
+using Cmpp298.Assignment3.Dto;
+using Cmpp298.Assignment3.Task;
+
+namespace Cmpp298.Assignment3.Presentation {
+	public class NewInvoicePresenter {
+		private readonly string _vendorId;
+		private readonly INewInvoiceView _view;
+		private readonly IInvoiceTask _invoiceTask;
+		private readonly IVendorTask _vendorTask;
+		private readonly ITermTask _termTask;
+
+		public NewInvoicePresenter( string vendorId, INewInvoiceView view )
+			: this( vendorId, view, new InvoiceTask( ), new VendorTask( ), new TermTask( ) ) {}
+
+		public NewInvoicePresenter( string vendorId, INewInvoiceView view, IInvoiceTask invoiceTask, IVendorTask vendorTask,
+		                            ITermTask termTask ) {
+			_vendorId = vendorId;
+			_view = view;
+			_invoiceTask = invoiceTask;
+			_vendorTask = vendorTask;
+			_termTask = termTask;
+		}
+
+		public void Load( ) {
+			_view.BindTo( _vendorTask.FindVendorNameBy( _vendorId ) );
+			_view.InvoiceNumber = Guid.NewGuid( ).ToString( );
+			_view.Terms.BindTo( _termTask.GetAll( ) );
+		}
+
+		public void SaveInvoice( ) {
+			if ( IsValidInput( ) ) {
+				_invoiceTask.SaveNewInvoice( CreateDtoFromView( ) );
+			}
+			else {
+				_view.ShowError( "Invalid input detected!" );
+			}
+		}
+
+		private bool IsValidInput( ) {
+			AmountEntrySpecification specification = new AmountEntrySpecification( );
+			return
+				specification.IsSatisfiedBy( _view.CreditTotal )
+				&& specification.IsSatisfiedBy( _view.PaymentTotal )
+				&& specification.IsSatisfiedBy( _view.InvoiceTotal );
+		}
+
+		private SaveInvoiceDto CreateDtoFromView( ) {
+			return new SaveInvoiceDto( _vendorId, _view.InvoiceNumber, _view.InvoiceDate, _view.InvoiceTotal, _view.PaymentTotal,
+			                           _view.CreditTotal, _view.DueDate, _view.PaymentDate, _view.Terms.SelectedItem.Value );
+		}
+	}
+}
+\ No newline at end of file