/**
* Method to parse the XML Feed coming from the PHP Input stream in the TlsHubSubscriberFE Callback URL page parsing
*
* @param $feed
*
* @return mixed
*/
public function parseFeed($feed)
{
// Start Time counter to use for calculation of the time it takes to parse the feed
$start_time = microtime(true);
// Replace & with the HTML entity of & which was causing an error to load the string
$feed = preg_replace('/&(?!#?[a-z0-9]+;)/', '&', $feed);
// Turn on Simple XML Internal Errors to catch any errors that appear
libxml_use_internal_errors(true);
$xml = simplexml_load_string($feed, null, LIBXML_NOCDATA);
// If there are errors then add them to the error logs
if ($xml === false) {
$error_msg = "Failed loading Article XML\n";
foreach (libxml_get_errors() as $error) {
$error_msg .= "\t" . $error->message;
}
HubLogger::error($error_msg);
// Send Email to admin
$email_subject = "TLS Article Importer Error - Failed Loading Article XML";
wp_mail($this->admin_email, $email_subject, $error_msg);
exit;
}
// Parse the article entries [Separate method so this method doesn't become extremely long]
$articlesResult = $this->parseArticles($xml);
// Stop Time Counter
$end_time = microtime(true);
// Calculate time it took to run through the import
$execution_time = $end_time - $start_time;
// Add Log of the time it took and how many articles it imported
$articles = $articlesResult['articleCount'] == 1 ? 'article' : 'articles';
echo 'It took ' . number_format($execution_time, 2) . ' seconds to ' . $articlesResult['import_type'] . ' Article ID: ' . $articlesResult['original_article_id'] . ' & Title: ' . $articlesResult['original_article_title'];
HubLogger::log('It took ' . number_format($execution_time, 2) . ' seconds to ' . $articlesResult['import_type'] . ' Article ID: ' . $articlesResult['original_article_id'] . ' & Title: ' . $articlesResult['original_article_title']);
}
/**
* Method to handle the Subscription Verification
*/
public function verifySubscription()
{
// Grab the JSON Payload being sent from the Hub and Decode it
$jsonPayload = file_get_contents('php://input');
$json = json_decode($jsonPayload);
// Perform a GET Request using Guzzle on the SubscribeURL that JSON Payload sent
$verificationResponse = $this->guzzleClient->get($json->SubscribeURL);
// Check if Response is 200, 202 or 204 and add a log message otherwise log error message
if (in_array($verificationResponse->getStatusCode(), array(200, 202, 204))) {
$this->current_options['subscription_status'] = 'Subscribed';
update_option($this->option_name, $this->current_options);
HubLogger::log('Positive answer from Subscription Verification. You are now Subscribed', $verificationResponse->getStatusCode());
header('HTTP/1.1 200 "Found"', null, 200);
} else {
HubLogger::error('Error from Subscription Verification', $verificationResponse->getStatusCode());
header('HTTP/1.1 404 "Not Found"', null, 404);
}
}
