Add record cleanup service.

Server/Services/CleanupService.cs

@@ -0,0 +1,51 @@
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Remotely.Server.Services
+{
+    public class CleanupService : IHostedService, IDisposable
+    {
+        public CleanupService(IServiceProvider serviceProvider)
+        {
+            Services = serviceProvider;
+        }
+
+        private IServiceProvider Services { get; }
+        private System.Timers.Timer CleanupTimer { get; set; }
+
+        public void Dispose()
+        {
+            CleanupTimer?.Dispose();
+        }
+
+        public Task StartAsync(CancellationToken cancellationToken)
+        {
+            CleanupTimer?.Dispose();
+            CleanupTimer = new System.Timers.Timer(TimeSpan.FromDays(1).TotalMilliseconds);
+            CleanupTimer.Elapsed += CleanupTimer_Elapsed;
+            CleanupTimer.Start();
+            return Task.CompletedTask;
+        }
+
+        public Task StopAsync(CancellationToken cancellationToken)
+        {
+            CleanupTimer?.Dispose();
+            return Task.CompletedTask;
+        }
+
+        private void CleanupTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
+        {
+            using (var scope = Services.CreateScope())
+            {
+                var dataService = scope.ServiceProvider.GetRequiredService<DataService>();
+
+                dataService.CleanupOldRecords();
+            }
+        }
+    }
+}

Server/Startup.cs

@@ -162,6 +162,7 @@ public void ConfigureServices(IServiceCollection services)
             services.AddSingleton<ApplicationConfig>();
             services.AddSingleton<RandomGenerator>();
             services.AddScoped<ApiAuthorizationFilter>();
+            services.AddHostedService<CleanupService>();
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.