use Win32::Process;
use Win32;

##</code><code>##

sub start_app {
    my ($self, $app) = @_;

    my $ProcessObj;
    if(!Win32::Process::Create($ProcessObj,
                               $app->{app},
                               $app->{app}." ".$app->{cmdlineopts},
                                0,
                                NORMAL_PRIORITY_CLASS,
                                $self->{basePath})) {
        print "Error starting app " . $app->{description} . ": " .
                Win32::FormatMessage( Win32::GetLastError() ) .
                "\n";
        $app->{handle} = undef;
        return 0;
    } else {
        $app->{handle} = $ProcessObj;
        my $app_pid = $app->{handle}->GetProcessID();
        print "Started app " . $app->{description} . " with PID " . $app_pid . "\n";
        return 1;
   }
}

##</code><code>##


sub check_app {
    my ($self, $app) = @_;

    # Ignore if this application was never started
    # or was intentionally stopped
    if(!defined($app->{handle})) {
        return $self->start_app($app);
    }

    # First, check if the process exited
    if($app->{handle}->Wait(1)) {
        # Process exited, so, restart
        print "Process exit detected: " . $app->{description} . "!n";
        return $self->start_app($app);
    }

    # All ok, just return true
    return 1;
}

##</code><code>##


sub stop_app {
    my ($self, $app) = @_;

    if(defined($app->{handle}) && $app->{handle}) {
        print "Killing app " . $app->{description} . "...\n";
        my $app_pid = $app->{handle}->GetProcessID();
        $app->{handle}->Kill(0);
        $app->{handle}->Wait(2000);
        $app->{handle} = undef;
        print "...killed.\n";
    } else {
        print "App " . $app->{description} . " already killed\n";
    }

}