Only show active contract area

Elwig/Helpers/Utils.cs

@@ -10,6 +10,9 @@ using System.Windows.Controls.Primitives;
 
 namespace Elwig.Helpers {
     public static class Utils {
+
+        public static int CurrentSeason => DateTime.Now.Year - (DateTime.Now.Month <= 3 ? 1 : 0);
+
         public static void SetInputChanged(Control input) {
             var brush = Brushes.Orange;
             if (input is ComboBox cb) {

Elwig/Models/Member.cs

@@ -1,3 +1,4 @@
+using Elwig.Helpers;
 using Microsoft.EntityFrameworkCore;
 using System;
 using System.Collections.Generic;
@@ -144,6 +145,11 @@ namespace Elwig.Models {
         [InverseProperty("Member")]
         public virtual ISet<Contract> Contracts { get; private set; }
 
+        [NotMapped]
+        public virtual ISet<Contract> ActiveContracts => Contracts
+            .Where(c => c.YearFrom <= Utils.CurrentSeason && (c.YearTo ?? int.MaxValue) >= Utils.CurrentSeason)
+            .ToHashSet();
+
         [InverseProperty("Member")]
         public virtual BillingAddr BillingAddress { get; private set; }
 

Elwig/Windows/MemberAdminWindow.xaml.cs

@@ -387,7 +387,7 @@ namespace Elwig.Windows {
                 case "email": ContactEmailInput.IsChecked = true; break;
             }
 
-            AreaCommitment.Text = $"{m.Contracts.Select(c => c.Area).Sum():N0} m²";
+            AreaCommitment.Text = $"{m.ActiveContracts.Select(c => c.Area).Sum():N0} m²";
 
             Menu_Member_SendEmail.IsEnabled = m.Email != null;