[#73] DeliveryAdminWindow: Add Liefermengen Excel output

Elwig/Services/DeliveryService.cs

@@ -962,6 +962,52 @@ namespace Elwig.Services {
             }
         }
 
+        public static async Task GenerateDeliveryDataList(this DeliveryAdminViewModel vm, ExportSubject subject, ExportMode mode) {
+            using var ctx = new AppDbContext();
+            IQueryable<DeliveryPart> query;
+            List<string> filterNames = [];
+            if (subject == ExportSubject.FromFilters) {
+                var (f, _, q, _, _) = await vm.GetFilters(ctx);
+                query = q;
+                filterNames.AddRange(f);
+            } else if (subject == ExportSubject.FromSeason) {
+                var year = vm.FilterSeason ?? Utils.CurrentLastSeason;
+                query = ctx.DeliveryParts
+                    .Where(p => p.Year == year);
+                filterNames.Add($"{year}");
+            } else {
+                throw new ArgumentException("Invalid value for ExportSubject");
+            }
+
+            query = query
+                .OrderBy(p => p.Delivery.MgNr)
+                .ThenBy(p => p.SortId)
+                .ThenBy(p => p.AttrId)
+                .ThenBy(p => p.CultId);
+
+            var d = new SaveFileDialog() {
+                FileName = $"Liefermengen.ods",
+                DefaultExt = "ods",
+                Filter = "OpenDocument Format Spreadsheet (*.ods)|*.ods",
+                Title = $"Liefermengen speichern unter - Elwig"
+            };
+            if (d.ShowDialog() == true) {
+                Mouse.OverrideCursor = Cursors.Wait;
+                await Task.Run(async () => {
+                    try {
+                        using var ods = new OdsFile(d.FileName);
+                        var tblTotal = await MemberDeliveryData.FromQuery(query, filterNames);
+                        var tbl = await MemberDeliveryPerVarietyData.FromQuery(query, filterNames);
+                        await ods.AddTable(tblTotal);
+                        await ods.AddTable(tbl);
+                    } catch (Exception exc) {
+                        MessageBox.Show(exc.Message, "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
+                    }
+                });
+                Mouse.OverrideCursor = null;
+            }
+        }
+
         private static void AddToolTipCell(Grid grid, string text, int row, int col, int colSpan = 1, bool bold = false, bool alignRight = false, bool alignCenter = false) {
             var tb = new TextBlock() {
                 Text = text,