Add parse operation graceful completion

Hcs.WebApp/BackgroundServices/DataParsers/HousesDataParser_15_7_0_1.cs

@@ -1,13 +1,40 @@
-using Hcs.Broker;
-using Hcs.WebApp.Data.Hcs;
+using Hcs.WebApp.Data.Hcs;
+using Hcs.WebApp.Services;
+using Microsoft.EntityFrameworkCore;
 
 namespace Hcs.WebApp.BackgroundServices.DataParsers
 {
     public class HousesDataParser_15_7_0_1(IServiceScope scope, Operation operation) : DataParserBase(scope, operation)
     {
-        public override Task ParseAsync()
+        public override async Task ParseAsync()
         {
-            throw new NotImplementedException();
+            var headquartersService = scope.ServiceProvider.GetRequiredService<HeadquartersService>();
+            var fileToParseService = scope.ServiceProvider.GetRequiredService<FileToParseService>();
+
+            using var context = headquartersService.GetNewContext();
+            var executionStrategy = context.Database.CreateExecutionStrategy();
+            await executionStrategy.ExecuteAsync(async () =>
+            {
+                using var transaction = await context.Database.BeginTransactionAsync();
+                try
+                {
+                    var now = DateTime.UtcNow;
+
+                    var fileToParse = await fileToParseService.GetFileToParseByOperationIdAsync(context, operation.Id);
+                    fileToParse.ParsedAt = now;
+                    await context.SaveChangesAsync();
+
+                    await headquartersService.SetOperationEndedAsync(context, operation.Id, now);
+
+                    await transaction.CommitAsync();
+                }
+                catch
+                {
+                    await transaction.RollbackAsync();
+
+                    throw;
+                }
+            });
         }
     }
 }