[#41] MemberAdminWindow: Add feature to transfer area commitments from predecessor

Elwig/Helpers/Utils.cs

@@ -30,6 +30,7 @@ namespace Elwig.Helpers {
         public static int CurrentYear => DateTime.Now.Year;
         public static int CurrentNextSeason => DateTime.Now.Year - (DateTime.Now.Month <= 3 ? 1 : 0);
         public static int CurrentLastSeason => DateTime.Now.Year - (DateTime.Now.Month <= 7 ? 1 : 0);
+        public static int FollowingSeason => DateTime.Now.Year + (DateTime.Now.Month >= 11 ? 1 : 0);
         public static DateTime Today => (DateTime.Now.Hour >= 3) ? DateTime.Today : DateTime.Today.AddDays(-1);
 
         [GeneratedRegex("^serial://([A-Za-z0-9]+):([0-9]+)(,([5-9]),([NOEMSnoems]),(0|1|1\\.5|2|))?$", RegexOptions.Compiled)]

Elwig/Windows/MemberAdminWindow.xaml.cs

@@ -15,7 +15,9 @@ using System.Diagnostics;
 namespace Elwig.Windows {
     public partial class MemberAdminWindow : AdministrationWindow {
 
-        private List<string> TextFilter = [];
+        protected bool TransferPredecessorAreaComs = false;
+        protected List<string> TextFilter = [];
+
         private readonly (ComboBox Type, TextBox Number, TextBox Comment)[] PhoneNrInputs;
         private readonly (Label Label, TextBox Address)[] EmailAddressInputs;
 
@@ -23,7 +25,7 @@ namespace Elwig.Windows {
         private readonly RoutedCommand CtrlP = new("CtrlP", typeof(MemberAdminWindow), [new KeyGesture(Key.P, ModifierKeys.Control)]);
         private readonly RoutedCommand CtrlShiftP = new("CtrlShiftP", typeof(MemberAdminWindow), [new KeyGesture(Key.P, ModifierKeys.Control | ModifierKeys.Shift)]);
 
-        private static ObservableCollection<KeyValuePair<string, string>> PhoneNrTypes { get; set; } = new(Utils.PhoneNrTypes);
+        protected static ObservableCollection<KeyValuePair<string, string>> PhoneNrTypes { get; set; } = new(Utils.PhoneNrTypes);
 
         public MemberAdminWindow() {
             InitializeComponent();
@@ -338,6 +340,7 @@ namespace Elwig.Windows {
             IsCreating = true;
             MemberList.IsEnabled = false;
             MemberList.SelectedItem = null;
+            TransferPredecessorAreaComs = false;
             HideNewEditDeleteButtons();
             ShowSaveResetCancelButtons();
             UnlockInputs();
@@ -352,6 +355,7 @@ namespace Elwig.Windows {
 
             IsEditing = true;
             MemberList.IsEnabled = false;
+            TransferPredecessorAreaComs = false;
 
             HideNewEditDeleteButtons();
             ShowSaveResetCancelButtons();
@@ -402,6 +406,7 @@ namespace Elwig.Windows {
         }
 
         private void ResetButton_Click(object sender, RoutedEventArgs evt) {
+            TransferPredecessorAreaComs = false;
             if (IsEditing) {
                 RefreshInputs();
             } else if (IsCreating) {
@@ -415,6 +420,7 @@ namespace Elwig.Windows {
             IsEditing = false;
             IsCreating = false;
             MemberList.IsEnabled = true;
+            TransferPredecessorAreaComs = false;
             HideSaveResetCancelButtons();
             ShowNewEditDeleteButtons();
             RefreshInputs();
@@ -651,6 +657,33 @@ namespace Elwig.Windows {
 
             await ctx.SaveChangesAsync();
 
+            if (TransferPredecessorAreaComs && m.PredecessorMgNr is int predecessor) {
+                var year = Utils.FollowingSeason;
+                var areaComs = await ctx.AreaCommitments
+                    .Where(c => c.MgNr == predecessor && (c.YearTo == null || c.YearTo >= year))
+                    .ToListAsync();
+
+                var fbNr = await ctx.NextFbNr();
+                ctx.AddRange(areaComs.Select((c, i) => new AreaCom {
+                    FbNr = fbNr + i,
+                    MgNr = m.MgNr,
+                    VtrgId = c.VtrgId,
+                    CultId = c.CultId,
+                    Area = c.Area,
+                    KgNr = c.KgNr,
+                    GstNr = c.GstNr,
+                    RdNr = c.RdNr,
+                    YearFrom = year,
+                    YearTo = c.YearTo,
+                }));
+
+                foreach (var ac in areaComs)
+                    ac.YearTo = year - 1;
+                ctx.UpdateRange(areaComs);
+                await ctx.SaveChangesAsync();
+            }
+            TransferPredecessorAreaComs = false;
+
             if (newMgNr != m.MgNr) {
                 await ctx.Database.ExecuteSqlAsync($"UPDATE member SET mgnr = {newMgNr} WHERE mgnr = {oldMgNr}");
             }
@@ -804,8 +837,26 @@ namespace Elwig.Windows {
             InputTextChanged((TextBox)sender, Validator.CheckPredecessorMgNr);
         }
 
-        private void PredecessorMgNrInput_LostFocus(object sender, RoutedEventArgs evt) {
+        private async void PredecessorMgNrInput_LostFocus(object sender, RoutedEventArgs evt) {
-            InputLostFocus((TextBox)sender, Validator.CheckPredecessorMgNr);
+            var valid = InputLostFocus((TextBox)sender, Validator.CheckPredecessorMgNr);
+            if (valid && PredecessorMgNrInput.Text != "" && (IsEditing || IsCreating)) {
+                var mgnr = int.Parse(PredecessorMgNrInput.Text);
+                if (MemberList.SelectedItem is Member m && m.MgNr == mgnr)
+                    return;
+                using var ctx = new AppDbContext();
+                var areaComs = await ctx.AreaCommitments.Where(c => c.MgNr == mgnr && c.YearTo == null).ToListAsync();
+                if (areaComs.Count == 0)
+                    return;
+                var res = MessageBox.Show("Sollen die aktiven Flächenbindungen des angegebenen\n" +
+                    $"Vorgängers übernommen werden? ({areaComs.Sum(c => c.Area)} m²)\n\n" +
+                    "Die Flächenbindungen werden erst\nnach dem Speichern übernommen!",
+                    "Aktive Flächenbindungen übernehmen", MessageBoxButton.YesNo, MessageBoxImage.Question, MessageBoxResult.No);
+                if (res != MessageBoxResult.Yes)
+                    return;
+                TransferPredecessorAreaComs = true;
+                SetOriginalValue(PredecessorMgNrInput, -1);  // hack to allow user to save
+                UpdateButtons();
+            }
         }
 
         private new void EmailAddressInput_TextChanged(object sender, TextChangedEventArgs evt) {