/**
* Save expanded version of all unexpanded URLs to data store, as well as intermediary short links.
*/
public function expandOriginalURLs($flickr_api_key = null)
{
$links_to_expand = $this->link_dao->getLinksToExpandForInstances($this->link_limit);
if (count($links_to_expand) < 1) {
$links_to_expand = $this->link_dao->getLinksToExpand($this->link_limit);
}
$this->logger->logUserInfo(count($links_to_expand) . " links to expand. Please wait. Working...", __METHOD__ . ',' . __LINE__);
$total_expanded = 0;
$total_errors = 0;
$has_expanded_flickr_link = false;
foreach ($links_to_expand as $index => $link) {
if (Utils::validateURL($link->url)) {
$endless_loop_prevention_counter = 0;
$this->logger->logInfo("Expanding " . ($total_expanded + 1) . " of " . count($links_to_expand) . " (" . $link->url . ")", __METHOD__ . ',' . __LINE__);
//make sure shortened short links--like t.co--get fully expanded
$fully_expanded = false;
$short_link = $link->url;
while (!$fully_expanded) {
//begin Flickr thumbnail processing
if (isset($flickr_api_key) && substr($short_link, 0, strlen('http://flic.kr/')) == 'http://flic.kr/') {
self::expandFlickrThumbnail($flickr_api_key, $short_link, $link->url);
$has_expanded_flickr_link = true;
$fully_expanded = true;
}
//end Flickr thumbnail processing
$expanded_url = URLExpander::expandURL($short_link, $link->url, $index, count($links_to_expand), $this->link_dao, $this->logger);
if ($expanded_url == $short_link || $expanded_url == '' || $endless_loop_prevention_counter > self::EXPANSION_CAP) {
$fully_expanded = true;
} else {
try {
$this->short_link_dao->insert($link->id, $short_link);
} catch (DataExceedsColumnWidthException $e) {
$this->logger->logError($short_link . " short link record exceeds column width, cannot save", __METHOD__ . ',' . __LINE__);
$fully_expanded = true;
}
}
if (strlen($expanded_url) < 256) {
$short_link = $expanded_url;
} else {
$fully_expanded = true;
}
$endless_loop_prevention_counter++;
}
if (!$has_expanded_flickr_link) {
if ($expanded_url != '') {
if (!isset($link->image_src) || $link->image_src == '') {
$image_src = URLProcessor::getImageSource($expanded_url);
} else {
$image_src = $link->image_src;
}
$url_details = URLExpander::getWebPageDetails($expanded_url);
try {
$this->link_dao->saveExpandedUrl($link->url, $expanded_url, $url_details['title'], $image_src, $url_details['description']);
$total_expanded = $total_expanded + 1;
} catch (DataExceedsColumnWidthException $e) {
$this->logger->logError($link->url . " record exceeds column width, cannot save", __METHOD__ . ',' . __LINE__);
$this->link_dao->saveExpansionError($link->url, "URL exceeds column width");
$total_errors = $total_errors + 1;
}
} else {
$this->logger->logError($link->url . " not a valid URL - relocates to nowhere", __METHOD__ . ',' . __LINE__);
$this->link_dao->saveExpansionError($link->url, "Invalid URL - relocates to nowhere");
$total_errors = $total_errors + 1;
}
}
} else {
$this->logger->logError($link->url . " not a valid URL", __METHOD__ . ',' . __LINE__);
$this->link_dao->saveExpansionError($link->url, "Invalid URL");
$total_errors = $total_errors + 1;
}
$has_expanded_flickr_link = false;
}
$this->logger->logUserSuccess($total_expanded . " URLs successfully expanded (" . $total_errors . " errors).", __METHOD__ . ',' . __LINE__);
}
