static function wfPrefHook($user, &$preferences)
{
global $wgUser, $wgRequest, $wgOut;
$user_id = "";
$acc_id = "";
$app_id = "";
$secret = "";
$error_msg = "";
$pairResponse = null;
# If app_id, secret, user_id and the account_id are already in the DB, we take them
SpecialLatch::accDB_appsecret($app_id, $secret);
SpecialLatch::accDB_useraccid($wgUser->getId(), $user_id, $acc_id);
# We create a new Latch object from the Latch SDK
$api = new Latch($app_id, $secret);
# We print the Latch preferences
SpecialLatch::drawUserPreferences($acc_id, $wgUser, $preferences);
# If the Pair button is pressed, we try to pair the account
if ($wgRequest->getCheck('latchTokBot')) {
# CSRF protection
if (!$wgUser->matchEditToken($wgRequest->getVal('hiddToken'))) {
return;
} else {
$pair_token = $wgRequest->getText('latchTok');
# Not empty or extrange characters
if (empty($pair_token) || preg_match('/\\.([^\\.]*$)/', $pair_token)) {
throw new DBExpectedError(null, wfMsg('latch-error-pair'));
} else {
$pairResponse = $api->pair($pair_token);
$responseData = $pairResponse->getData();
if (!empty($responseData)) {
$accountId = $responseData->{"accountId"};
}
# If everything is OK, we insert the data in the DB
if (!empty($accountId)) {
SpecialLatch::insDB_useraccid($wgUser, $accountId);
} elseif ($pairResponse->getError() == NULL) {
throw new DBExpectedError(null, wfMsg('default-error-pair'));
} else {
switch ($pairResponse->getError()->getCode()) {
case 205:
$error_msg = wfMsg('205-pair');
break;
case 206:
$error_msg = wfMsg('206-pair');
break;
case 401:
$error_msg = wfMsg('error-401');
break;
default:
$error_msg = wfMsg('default-error-pair');
break;
}
throw new DBExpectedError(null, $pairResponse->getError()->getCode() . " - " . $error_msg);
}
}
}
}
# If the Unpair button is pressed, we try to unpair the account
if ($wgRequest->getCheck('latchUnpair')) {
SpecialLatch::accDB_useraccid($wgUser->getId(), $user_id, $acc_id);
# CSRF protection
if (!$wgUser->matchEditToken($wgRequest->getVal('hiddToken'))) {
return;
} else {
$pairResponse = $api->unpair($acc_id);
# If Account ID is empty and no error fields are found, there are problems with the connection to the server
if ($pairResponse->getError() == NULL) {
SpecialLatch::delDB_useraccid($wgUser);
} else {
switch ($pairResponse->getError()->getCode()) {
case 201:
$error_msg = wfMsg('201-unpair');
break;
case 401:
$error_msg = wfMsg('error-401');
break;
default:
$error_msg = wfMsg('error-unpair');
break;
}
throw new DBExpectedError(null, $pairResponse->getError()->getCode() . " - " . $error_msg);
}
}
}
# We print the Latch preferences again to make sure that nothing strange happens
SpecialLatch::drawUserPreferences($acc_id, $wgUser, $preferences);
# Required return value of a hook function.
return true;
}
