#if !NETSTANDARD1_3
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Threading;
#if NET452
using System.ServiceProcess;
#else
using Abstractions;
#endif
namespace Unosquare.Swan {
  /// <summary>
  /// Extension methods.
  /// </summary>
  public static class WindowsServicesExtensions {
    /// <summary>
    /// Runs a service in console mode.
    /// </summary>
    /// <param name="serviceToRun">The service to run.</param>
    public static void RunInConsoleMode(this ServiceBase serviceToRun) {
      if(serviceToRun == null) {
        throw new ArgumentNullException(nameof(serviceToRun));
      }

      RunInConsoleMode(new[] { serviceToRun });
    }

    /// <summary>
    /// Runs a set of services in console mode.
    /// </summary>
    /// <param name="servicesToRun">The services to run.</param>
    public static void RunInConsoleMode(this ServiceBase[] servicesToRun) {
      if(servicesToRun == null) {
        throw new ArgumentNullException(nameof(servicesToRun));
      }

      const String onStartMethodName = "OnStart";
      const String onStopMethodName = "OnStop";

      MethodInfo onStartMethod = typeof(ServiceBase).GetMethod(onStartMethodName,
              BindingFlags.Instance | BindingFlags.NonPublic);
      MethodInfo onStopMethod = typeof(ServiceBase).GetMethod(onStopMethodName,
          BindingFlags.Instance | BindingFlags.NonPublic);

      List<Thread> serviceThreads = new List<Thread>();
      "Starting services . . .".Info(Runtime.EntryAssemblyName.Name);

      foreach(ServiceBase service in servicesToRun) {
        Thread thread = new Thread(() => {
          _ = onStartMethod.Invoke(service, new Object[] { new String[] { } });
          $"Started service '{service.GetType().Name}'".Info(service.GetType());
        });

        serviceThreads.Add(thread);
        thread.Start();
      }

      "Press any key to stop all services.".Info(Runtime.EntryAssemblyName.Name);
      _ = Terminal.ReadKey(true, true);
      "Stopping services . . .".Info(Runtime.EntryAssemblyName.Name);

      foreach(ServiceBase service in servicesToRun) {
        _ = onStopMethod.Invoke(service, null);
        $"Stopped service '{service.GetType().Name}'".Info(service.GetType());
      }

      foreach(Thread thread in serviceThreads) {
        thread.Join();
      }

      "Stopped all services.".Info(Runtime.EntryAssemblyName.Name);
    }
  }
}
#endif