/**
* TempestCache::tempestChanged($incoming) to check if incoming data array matches cache
*
* @param array[] $incoming Array structure of current dataset that needs to be compared to the cache.
*
* @return boolean True if datasets are different or timestamp is not within in the hour. Cache resets every hour.
* returns false if incoming data set is the same as cache.
*/
static function tempestChanged($incoming)
{
if (NULL == self::$instance) {
self::$instance = new TempestCache();
if (!file_exists(self::$tempest)) {
self::setCache($incoming);
return true;
} else {
$fp = fopen(self::$tempest, 'r');
self::$cache = json_decode(fgets($fp));
fclose($fp);
}
}
//Write cache and return true when current cache is empty or timestamp are different hour or incoming data set is different than cache
if (empty(self::$cache) || !self::checkTimeStamp($incoming) || !self::checkDataSet($incoming)) {
self::setCache($incoming);
return true;
}
return false;
}
require_once 'TempestCache.php';
/* Two methods to retrieve tempest dataset.
* Initial method is to use the API with PHP DOMDocument as fall back
* if API is unreachable.
*
* API GET call returns a JSON dataset with current tempests.
*/
$API = 'http://poetempest.com/api/v1/current_tempests';
$url = 'http://poetempest.com/';
$votesRequired = '3';
$notifyTempest;
$tempest = new TempestWatch($url, $votesRequired, $API);
$result = $tempest->execute($notifyTempest);
if (count($result) > 0 && $result != -1) {
$result[] = time();
if (TempestCache::tempestChanged($result)) {
//Sets Notification based on flag
if (EMAIL_NOTIFICATION && SMS_NOTIFICATION) {
$to = CONTACT_EMAIL . ', ' . CONTACT_SMS . '@' . CONTACT_SMS_PROVIDER;
} else {
if (EMAIL_NOTIFICATION) {
$to = CONTACT_EMAIL;
} else {
if (SMS_NOTIFICATION) {
$to = CONTACT_SMS . '@' . CONTACT_SMS_PROVIDER;
} else {
echo 'No notification set. Do nothing!';
exit;
}
}
}