using System;

// ==============================================================================================
// For testing windows service with .NET 5
// Source: https://stackoverflow.com/questions/7764088/net-console-application-as-windows-service
// ==============================================================================================

using System.ServiceProcess;
using System.IO;

public static class Program
{
        #region Nested classes to support running as service
        public const string ServiceName = "MyService";

        public class Service : ServiceBase
        {
                public Service()
                {
                        File.AppendAllLines("log.txt", new string[] { "Service init" });
                        ServiceName = Program.ServiceName;
                }

                protected override void OnStart(string[] args)
                {
                        File.AppendAllLines("log.txt", new string[] { "Service start" });
                        Program.Start(args);
                        base.OnStart(args);
                }

                protected override void OnStop()
                {
                        File.AppendAllLines("log.txt", new string[] { "Service stop" });
                        Program.Stop();
                        base.OnStop();
                }
        }
        #endregion

        static void Main(string[] args)
        {
                File.AppendAllLines("log.txt", new string[] { "App init" });
                if (!Environment.UserInteractive)
                {
                        File.AppendAllLines("log.txt", new string[] { "Running as service" });
                        // running as service
                        using (var service = new Service())
                                ServiceBase.Run(service);
                }
                else
                {
                        File.AppendAllLines("log.txt", new string[] { "Running as app" });
                        // running as console app
                        Start(args);

                        Console.WriteLine("Press any key to stop...");
                        Console.ReadKey(true);

                        Stop();
                }
        }

        private static void Start(string[] args)
        {
                // onstart code here
        }

        private static void Stop()
        {
                // onstop code here
        }
}