using System.Collections;
using System.ComponentModel;
using System.Configuration.Install;
using System.IO;
using System.Security.Principal;
using System.ServiceProcess;

namespace PRSServices;

public class PRSInstaller : Installer
{
    private readonly ServiceProcessInstaller _proc;
    private readonly ServiceInstaller _svc;

    public PRSInstaller()
    {
        _proc = new ServiceProcessInstaller();

        _svc = new ServiceInstaller { StartType = ServiceStartMode.Automatic };

        Installers.Add(_svc);
        Installers.Add(_proc);
    }

    protected override void OnBeforeInstall(IDictionary savedState)
    {
        var username = Context.Parameters["/username"];
        if (string.IsNullOrWhiteSpace(username))
        {
            _proc.Account = ServiceAccount.LocalSystem;
            _proc.Username = WindowsIdentity.GetCurrent().Name;
        }
        else
        {
            _proc.Account = ServiceAccount.User;
            _proc.Username = username;
            _proc.Password = Context.Parameters["/password"] ?? "";
        }

        _svc.ServiceName = Context.Parameters["/name"];
        _svc.DisplayName = Context.Parameters["/displayName"];
        _svc.Description = Context.Parameters["/description"];

        // Change to .exe because .NET creates and runs .dll
        Context.Parameters["assemblypath"] =
            "\"" + Path.ChangeExtension(Context.Parameters["assemblypath"], "exe") + "\" /service=" + _svc.ServiceName;
        base.OnBeforeInstall(savedState);
    }

    protected override void OnBeforeUninstall(IDictionary savedState)
    {
        _svc.ServiceName = Context.Parameters["/name"];

        // Change to .exe because .NET creates and runs .dll
        Context.Parameters["assemblypath"] =
            "\"" + Path.ChangeExtension(Context.Parameters["assemblypath"], "exe") + "\" /service=" + _svc.ServiceName;
        base.OnBeforeUninstall(savedState);
    }
}