using InABox.Core;
using PRSServices;
using Syncfusion.Licensing;
using System;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Security.Principal;
using System.ServiceProcess;
using System.Windows;

namespace PRSServer;

/// <summary>
///     Interaction logic for App.xaml
/// </summary>
public partial class App : Application
{
    static App()
    {
        PRSServiceInstaller.Assembly = typeof(App).Assembly;
    }

    private AdminStartup CheckAdmin()
    {
        if (!IsRunAsAdmin())
        {
            var proc = new ProcessStartInfo();
            proc.UseShellExecute = true;
            proc.WorkingDirectory = Environment.CurrentDirectory;
            proc.FileName =
                Path.ChangeExtension(Assembly.GetEntryAssembly().Location, "exe"); // Required to change to exe because .NET produces a .dll

            proc.Verb = "runas";

            try
            {
                Process.Start(proc);
                Shutdown(0);
                return AdminStartup.Done;
            }
            catch (Exception ex)
            {
                MessageBox.Show("This program must be run as an administrator! \n\n" + ex);
            }

            return AdminStartup.Cannot;
        }

        return AdminStartup.Already;
    }

    private bool IsRunAsAdmin()
    {
        try
        {
            var id = WindowsIdentity.GetCurrent();
            var principal = new WindowsPrincipal(id);
            return principal.IsInRole(WindowsBuiltInRole.Administrator);
        }
        catch (Exception)
        {
            return false;
        }
    }

    protected override void OnStartup(StartupEventArgs e)
    {
        base.OnStartup(e);
        SyncfusionLicenseProvider.RegisterLicense(CoreUtils.SyncfusionLicense(SyncfusionVersion.v23_2));

        if (Environment.UserInteractive)
        {
            var args = Environment.GetCommandLineArgs();
            if (args.Length <= 1)
            {
                if (CheckAdmin() != AdminStartup.Cannot)
                {
                    var f = new Configuration();
                    f.ShowDialog();
                    Shutdown(0);
                }
                else
                {
                    MessageBox.Show("This program must be run as Admin!");
                    Shutdown(0);
                }
            }
            else if (args[1].StartsWith("/service="))
            {
                var c = new ServerConsole(args[1].Split('=').Last(), args[1].Split('=').Last(), false);
                c.ShowDialog();
                Shutdown(0);
            }
            else
            {
                Shutdown(0);
            }
        }
        else
        {
            var args = Environment.GetCommandLineArgs();

            var serviceName = "";
            if (args.Length > 1 && args[1].StartsWith("/service=")) serviceName = args[1].Split('=').Last();

            ServiceBase.Run(new PRSServerService(serviceName));
            Shutdown(0);
        }
    }


    // -1 failed
    // 0 already admin
    // 1 launched admin

    private enum AdminStartup
    {
        Already,
        Done,
        Cannot
    }
}