/**
* @inheritDoc
*/
public function setup(Application $application)
{
$this->application = $application->option('-h, --help Show help message.')->on(Application::EVENT_BEFORE_ACTION, function (BeforeActionEvent $event) {
if ($event->getInput()->getOption('help') == true) {
$this->showHelpPage($event->getContext());
$event->preventAction();
}
})->on(Application::EVENT_INVALID_USAGE, function (InvalidUsageEvent $event) {
$input = $event->getInputSequence();
$contexts = $this->application->getContexts();
$command = [];
while ($positional = $input->pop()) {
$command[] = $positional;
}
$key = implode(' ', $command);
if (isset($contexts[$key])) {
$this->showHelpPage($contexts[$key]['instance']);
} else {
$this->showHelpPage($this->application->getRootContext());
}
});
}
