public static function process()
{
$logger = new Logger();
$rssFeed = Fetcher::get(RssConfig::$rssFeedUrl);
$containsNewContent = NewContentChecker::checkForNewContent($rssFeed);
if ($containsNewContent) {
$logger->log('info', 'New items detected');
OutputUpdater::updateOutput($rssFeed);
GuidUpdater::update($rssFeed->channel->item);
} else {
$logger->log('info', 'No new items detected');
}
}
public static function checkForNewContent($rssFeed)
{
$log = new Logger();
$rssFileContents = FileReader::readFile(Config::$rssGuidFileLocation);
if (!$rssFileContents) {
$log->log('info', 'GUID file is empty');
return true;
}
$aGuids = GuidFileHandler::getGuids();
foreach ($rssFeed->channel->item as $item) {
if (!in_array((string) $item->guid, $aGuids)) {
$log->log('info', 'Rss file has new content');
return true;
}
}
return false;
}
public static function update($rssItems)
{
$logger = new Logger();
$logger->log('info', 'Updating GUIDs');
GuidFileHandler::addGuidFileIfNotExists();
$aGuids = [];
foreach ($rssItems as $rssItem) {
array_push($aGuids, (string) $rssItem->guid);
}
GuidFileHandler::updateGuids($aGuids);
}
public static function updateGuids($aGuids)
{
$logger = new Logger();
$guidsJson = json_encode($aGuids);
$updated = FileWriter::writeStringToFile($guidsJson, Config::$rssGuidFileLocation);
$message = 'GUIDs updated';
$logLevel = 'info';
if (!$updated) {
$message = 'GUIDs not updated';
$logLevel = 'error';
}
$logger->log($logLevel, $message);
}
public static function updateOutput($rssFeed)
{
$logger = new Logger();
$jsonString = json_encode($rssFeed);
OutputFileHandler::addOutputFileIfNotExists();
$updated = FileWriter::writeStringToFile($jsonString, Config::$rssOutputFileLocation);
$message = 'Output updated';
$logLevel = 'info';
if (!$updated) {
$message = 'Output not updated';
$logLevel = 'error';
}
$logger->log($logLevel, $message);
}
public static function go()
{
$logger = new Logger();
$logger->log('info', 'Trace to log in go');
Foo::bar();
}