public function notifyListener(Event $event)
{
foreach ($this->eventListener as $listener) {
$event->setEventMessage($event->getEventMessage() . "<br>");
echo $event->getEventMessage();
$listener->processEvent($event);
}
}
/**
* This method handles all form submissions.
*/
private function handlePost()
{
$session = $this->getSession(false);
$parameter = $this->getParameter();
$event = null;
// Check if we have submitted the right form.
if ($parameter['random_key'] === $session['random_key']) {
if (isset($_POST['submit_create'])) {
$url = $_POST['input_field'];
if (\Validator::isValidURL($url)) {
// Check now if url exists and if it redirects
$url = \Validator::getValidatedURL($url);
// check if url even exists before we move on
if ($this->isUrlExist($url)) {
// check if target url redirects
$allowRedirect = $this->config['shortener']['redirect'] === 'on';
if ($allowRedirect || !$this->isUrlRedirect($url)) {
/*
* Check if we have already a record for this target url
*/
if ($this->urlShortenator->targetURLExists(\Validator::getValidatedURL($url))) {
$event = new Event(Event::WARNING);
$event->setEventMessage("A shortened URL with of this target already exists. You can redirect a URL only once.");
$this->eventManager->notifyListener($event);
$this->viewController->errorAction($this->getPageInformation(), $this->eventList);
} else {
$shortURL = $this->urlShortenator->generateShortURL($url);
$data = $this->getPageInformation();
$data["shortURL"] = $shortURL;
$this->viewController->shortGeneratedAction($data, $this->eventList);
}
} else {
$event = new Event(Event::WARNING);
$event->setEventMessage("Given URL points to a redirecting node which is permitted.");
$this->eventManager->notifyListener($event);
$this->viewController->errorAction($this->getPageInformation(), $this->eventList);
}
} else {
$event = new Event(Event::ERROR);
$event->setEventMessage("The URL '{$url} doesn't exist or produces an error.");
$this->eventManager->notifyListener($event);
$this->viewController->errorAction($this->getPageInformation(), $this->eventList);
}
} else {
$event = new Event(Event::ERROR);
$event->setEventMessage("Given URL has not the right format and doesn't validate to a URL.");
$this->eventManager->notifyListener($event);
$this->viewController->errorAction($this->getPageInformation(), $this->eventList);
}
} else {
// This is the case where we want to look up a shortURL or a targetURL
if (isset($_POST['submit_lookup'])) {
$url = \Validator::getValidatedURL($_POST['input_field']);
$pos = strpos($url, $this->config['shortener']['targetURL']);
// we probably have a targetURL as input and are looking for the shortURL
$data = $this->getPageInformation();
$data['lookup'] = $url;
if ($pos === false) {
$shortURLs = $this->urlShortenator->getShortenURL($url);
if ($shortURLs !== false) {
$shortURL = $shortURLs;
$data['match_found'] = true;
$data['match'] = $shortURL;
} else {
$data['match_found'] = false;
}
} else {
// get Parameter from given shortURL
$param = substr($url, strlen($this->config['shortener']['targetURL']) + 1);
if (strlen($param) === 0) {
$data['match_found'] = false;
} else {
$targetURLs = $this->urlShortenator->getTargetURLObject($param);
if ($targetURLs !== false) {
$data['match_found'] = true;
$data['match'] = $targetURLs;
} else {
$data['match_found'] = false;
}
}
}
$this->viewController->matchResultAction($data, $this->eventList);
}
}
} else {
$event = new Event(Event::WARNING);
$event->setEventMessage("An older form was submitted. Try again");
$this->eventManager->notifyListener($event);
$this->viewController->welcomeAction($this->getPageInformation(), $this->eventList);
}
}
/**
* This method returns all objects produced by given query of type $classname.
*
* @param string $query
* the sql statement
* @param string $className
* name of the type that we expect
* @return multitype:|boolean
*/
public function fetchAllShortURLs($query, $className)
{
$con = $this->getConnection();
if (isset($con)) {
$stmt = $con->prepare($query);
$stmt->execute();
$result = $stmt->fetchObject($className);
return $result;
} else {
$event = new Event(Event::ERROR);
$event->setEventMessage("Error Code: " . $stmt->errorCode() . " | " . $stmt->errorInfo());
$this->eventManager->notifyListener($event);
return false;
}
}
