From c12d111c5710ef573cd7102ce1e9367807a6b4de Mon Sep 17 00:00:00 2001
From: Lorenz Stechauner <lorenz.stechauner@necronda.net>
Date: Sat, 8 Jun 2024 18:22:55 +0200
Subject: [PATCH] [#16] Dialogs: Add DeleteMemberDialog

---
 Elwig/Dialogs/DeleteMemberDialog.xaml    | 64 ++++++++++++++++++++++++
 Elwig/Dialogs/DeleteMemberDialog.xaml.cs | 48 ++++++++++++++++++
 Elwig/Models/Entities/Member.cs          |  3 ++
 Elwig/Windows/MemberAdminWindow.xaml.cs  | 33 +++++++++---
 4 files changed, 141 insertions(+), 7 deletions(-)
 create mode 100644 Elwig/Dialogs/DeleteMemberDialog.xaml
 create mode 100644 Elwig/Dialogs/DeleteMemberDialog.xaml.cs

diff --git a/Elwig/Dialogs/DeleteMemberDialog.xaml b/Elwig/Dialogs/DeleteMemberDialog.xaml
new file mode 100644
index 0000000..0aa5c92
--- /dev/null
+++ b/Elwig/Dialogs/DeleteMemberDialog.xaml
@@ -0,0 +1,64 @@
+<Window x:Class="Elwig.Dialogs.DeleteMemberDialog"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:Elwig.Dialogs"
+        ResizeMode="NoResize" ShowInTaskbar="False" Topmost="True"
+        WindowStartupLocation="CenterOwner"
+        DataContext="{Binding RelativeSource={RelativeSource Self}}"
+        Title="Mitglied löschen" Height="280" Width="400">
+    <Window.Resources>
+        <Style TargetType="Label">
+            <Setter Property="HorizontalAlignment" Value="Left"/>
+            <Setter Property="VerticalAlignment" Value="Top"/>
+            <Setter Property="Padding" Value="2,4,2,4"/>
+            <Setter Property="Height" Value="25"/>
+        </Style>
+        <Style TargetType="TextBox">
+            <Setter Property="HorizontalAlignment" Value="Stretch"/>
+            <Setter Property="VerticalAlignment" Value="Top"/>
+            <Setter Property="FontSize" Value="14"/>
+            <Setter Property="Padding" Value="2"/>
+            <Setter Property="Height" Value="25"/>
+            <Setter Property="TextWrapping" Value="NoWrap"/>
+        </Style>
+        <Style TargetType="CheckBox">
+            <Setter Property="HorizontalAlignment" Value="Left"/>
+            <Setter Property="VerticalAlignment" Value="Top"/>
+        </Style>
+        <Style TargetType="Button">
+            <Setter Property="HorizontalAlignment" Value="Right"/>
+            <Setter Property="VerticalAlignment" Value="Bottom"/>
+            <Setter Property="Width" Value="100"/>
+            <Setter Property="Height" Value="25"/>
+        </Style>
+    </Window.Resources>
+    <Grid>
+
+        <TextBlock TextAlignment="Center" Margin="10,10,10,10" VerticalAlignment="Top">
+            Bei Bestätigung wird das Mitglied samt zugehöriger Daten<LineBreak/>
+            <Bold>unwiderruflich gelöscht!</Bold> Wenn möglich sollte stattdessen<LineBreak/>
+            der Status des Mitglieds auf <Italic>Inaktiv</Italic> gesetzt werden!
+        </TextBlock>
+
+        <Label Content="Name u. MgNr. wiederholen:" Margin="10,60,10,10" HorizontalAlignment="Center"/>
+        <TextBox x:Name="NameInput" Margin="10,85,10,10"
+                 TextChanged="NameInput_TextChanged"/>
+
+        <Label Content="Beim Löschen müssen folgende Daten auch gelöscht werden:" Margin="10,120,10,10"/>
+        <CheckBox x:Name="AreaComInput" Content="Flächenbindungen" Margin="40,145,0,0"
+                  Checked="CheckBox_Changed" Unchecked="CheckBox_Changed"
+                  IsChecked="{Binding DeleteAreaComs}"/>
+        <CheckBox x:Name="DeliveryInput" Content="Lieferungen" Margin="40,165,0,0"
+                  Checked="CheckBox_Changed" Unchecked="CheckBox_Changed"
+                  IsChecked="{Binding DeleteDeliveries}"/>
+        <CheckBox x:Name="PaymentInput" Content="Auszahlungsdaten" Margin="40,185,0,0"
+                  Checked="CheckBox_Changed" Unchecked="CheckBox_Changed"
+                  IsChecked="{Binding DeletePaymentData}"/>
+
+        <Button x:Name="ConfirmButton" Content="Bestätigen" Margin="10,10,115,10" Grid.Column="1" IsEnabled="False"
+                Click="ConfirmButton_Click"/>
+        <Button x:Name="CancelButton" Content="Abbrechen" Margin="10,10,10,10" Grid.Column="1" IsCancel="True"/>
+    </Grid>
+</Window>
diff --git a/Elwig/Dialogs/DeleteMemberDialog.xaml.cs b/Elwig/Dialogs/DeleteMemberDialog.xaml.cs
new file mode 100644
index 0000000..cdfb7ca
--- /dev/null
+++ b/Elwig/Dialogs/DeleteMemberDialog.xaml.cs
@@ -0,0 +1,48 @@
+using System.Linq;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace Elwig.Dialogs {
+    public partial class DeleteMemberDialog : Window {
+
+        protected string[] NameParts;
+
+        public bool DeleteAreaComs { get; set; }
+        public bool DeleteDeliveries { get; set; }
+        public bool DeletePaymentData { get; set; }
+
+        public DeleteMemberDialog(int mgnr, string name, int numAreaComs, int numDeliveries, int numCredits) {
+            NameParts = name.ToLower().Split(' ').Where(p => p.Length > 0).Append($"{mgnr}").ToArray();
+            InitializeComponent();
+            Title += " - " + name;
+            AreaComInput.IsEnabled = numAreaComs != 0;
+            AreaComInput.Content += $" ({numAreaComs:N0})";
+            DeliveryInput.IsEnabled = numDeliveries != 0;
+            DeliveryInput.Content += $" ({numDeliveries:N0})";
+            PaymentInput.IsEnabled = numCredits != 0;
+            PaymentInput.Content += $" ({numCredits:N0})";
+        }
+
+        private void NameInput_TextChanged(object sender, TextChangedEventArgs evt) {
+            Update();
+        }
+
+        private void CheckBox_Changed(object sender, RoutedEventArgs evt) {
+            Update();
+        }
+
+        private void Update() {
+            var t = NameInput.Text.ToLower();
+            ConfirmButton.IsEnabled =
+                (!AreaComInput.IsEnabled || DeleteAreaComs) &&
+                (!DeliveryInput.IsEnabled || DeleteDeliveries) &&
+                (!PaymentInput.IsEnabled || DeletePaymentData) &&
+                NameParts.All(t.Contains);
+        }
+
+        private void ConfirmButton_Click(object sender, RoutedEventArgs evt) {
+            DialogResult = true;
+            Close();
+        }
+    }
+}
diff --git a/Elwig/Models/Entities/Member.cs b/Elwig/Models/Entities/Member.cs
index 52b82f8..a5612fd 100644
--- a/Elwig/Models/Entities/Member.cs
+++ b/Elwig/Models/Entities/Member.cs
@@ -166,6 +166,9 @@ namespace Elwig.Models.Entities {
         [InverseProperty(nameof(Delivery.Member))]
         public virtual ICollection<Delivery> Deliveries { get; private set; } = null!;
 
+        [InverseProperty(nameof(Credit.Member))]
+        public virtual ICollection<Credit> Credits { get; private set; } = null!;
+
         [InverseProperty(nameof(MemberTelNr.Member))]
         public virtual ICollection<MemberTelNr> TelephoneNumbers { get; private set; } = null!;
 
diff --git a/Elwig/Windows/MemberAdminWindow.xaml.cs b/Elwig/Windows/MemberAdminWindow.xaml.cs
index 4155443..e1485e4 100644
--- a/Elwig/Windows/MemberAdminWindow.xaml.cs
+++ b/Elwig/Windows/MemberAdminWindow.xaml.cs
@@ -15,6 +15,7 @@ using Elwig.Models.Dtos;
 using Elwig.Helpers.Export;
 using Microsoft.Win32;
 using Elwig.Helpers.Billing;
+using Elwig.Dialogs;
 
 namespace Elwig.Windows {
     public partial class MemberAdminWindow : AdministrationWindow {
@@ -454,20 +455,38 @@ namespace Elwig.Windows {
             if (MemberList.SelectedItem is not Member m)
                 return;
 
-            var r = MessageBox.Show(
-                $"Soll das Mitglied \"{m.AdministrativeName}\" (MgNr. {m.MgNr}) wirklich unwiderruflich gelöscht werden?\n" +
-                $"Sämtliche Lieferungen und Flächenbindungen dieses Mitglieds werden auch gelöscht!",
-                "Mitglied löschen", MessageBoxButton.OKCancel, MessageBoxImage.Warning, MessageBoxResult.Cancel);
-            if (r == MessageBoxResult.OK) {
+            int areaComs = 0, deliveries = 0, credits = 0;
+            using (var ctx = new AppDbContext()) {
+                var l = (await ctx.Members.FindAsync(m.MgNr))!;
+                areaComs = l.AreaCommitments.Count;
+                deliveries = l.Deliveries.Count;
+                credits = l.Credits.Count;
+            }
+            var d = new DeleteMemberDialog(m.MgNr, m.AdministrativeName, areaComs, deliveries, credits);
+            if (d.ShowDialog() == true) {
+                Mouse.OverrideCursor = Cursors.AppStarting;
                 try {
                     using (var ctx = new AppDbContext()) {
-                        ctx.Remove(m);
+                        var l = (await ctx.Members.FindAsync(m.MgNr))!;
+                        if (d.DeletePaymentData) {
+                            ctx.RemoveRange(l.Credits);
+                        }
+                        if (d.DeleteDeliveries) {
+                            ctx.RemoveRange(l.Deliveries);
+                        }
+                        if (d.DeleteAreaComs) {
+                            ctx.RemoveRange(l.AreaCommitments);
+                        }
+                        ctx.Remove(l);
                         await ctx.SaveChangesAsync();
                     }
                     await App.HintContextChange();
                 } catch (Exception exc) {
-                    MessageBox.Show(exc.Message, "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
+                    var str = "Der Eintrag konnte nicht in der Datenbank aktualisiert werden!\n\n" + exc.Message;
+                    if (exc.InnerException != null) str += "\n\n" + exc.InnerException.Message;
+                    MessageBox.Show(str, "Mitglied löschen", MessageBoxButton.OK, MessageBoxImage.Error);
                 }
+                Mouse.OverrideCursor = null;
             }
         }