using System;
using System.IO;
using System.Timers;
using Topshelf;

namespace TopShelfCustomArgs
{
    public class FolderProcessor
    {
        readonly Timer _timer;
        public FolderProcessor(string path, int frequency)
        {
            _timer = new Timer(frequency * 1000) { AutoReset = true };
            _timer.Elapsed += (sender, eventArgs) =>
            {
                string[] fileEntries = Directory.GetFiles(path);
                foreach (var fileEntry in fileEntries)
                    Console.WriteLine($"At {DateTime.Now}: {fileEntry}");
            };


        }
        public void Start() { _timer.Start(); }
        public void Stop() { _timer.Stop(); }
    }

    public class Program
    {
        public static void Main()
        {
            string path = string.Empty;
            int frequency = 10;


            HostFactory.Run(x =>
            {
                x.Service<FolderProcessor>(s =>
                {
                    s.ConstructUsing(name => new FolderProcessor(path, frequency));
                    s.WhenStarted(tc => tc.Start());
                    s.WhenStopped(tc => tc.Stop());
                });
                x.RunAsLocalSystem();

                x.SetDescription("Topshelf Host");
                x.SetDisplayName("Folder Processor");
                x.SetServiceName("Folder Processor");


                x.AddCommandLineDefinition("path", v => path = v);
                x.AddCommandLineDefinition("frequency", v => frequency = Int32.Parse(v));

            });

        }
    }

}