print $code;
//test new library
$zotero = new \Zotero\Library('user', $user_ID, 'Library', $api_Key);
$permissions = $zotero->getKeyPermissions('','');
print json_encode($permissions, JSON_PRETTY_PRINT);
$items = $zotero->fetchItemsTop(array(
'format'=>'atom', 'content'=>'none', 'start'=>'0', 'limit'=>'10', 'order'=>'dateModified', 'sort'=>'desc' ));
//'limit'=>10, 'collectionKey'=>$collectionKey, 'order'=>'dateAdded', 'sort'=>'desc'));
*/
if ($step == "1") {
//first step - info about current status
// 1) verify connection to zotero (get total count of top-level items in zotero)
if ($group_ID) {
$items = $zotero->getItemsTop($group_ID, array('format' => 'atom', 'content' => 'none', 'start' => '0', 'limit' => '1', 'order' => 'dateModified', 'sort' => 'desc'), "groups");
} else {
$items = $zotero->getItemsTop($user_ID, array('format' => 'atom', 'content' => 'none', 'start' => '0', 'limit' => '1', 'sort' => 'dateModified', 'direction' => 'desc'));
}
$code = $zotero->getResponseStatus();
if ($code > 499) {
print "<div style='color:red'><br />Zotero Server Side Error: returns response code: {$code}.<br /><br />" . "Please try this operation later.</div>";
} else {
if ($code > 399) {
$msg = "<div style='color:red'><br />Error. Cannot connect to Zotero API: returns response code: {$code}.<br /><br />";
if ($code == 400 || $code == 401 || $code == 403) {
$msg = $msg . "Verify API key in {$linkToAdvancedProperties}. It can be incorrect or truncated";
} else {
if ($code == 404) {
$msg = $msg . "Verify User and Group ID in " . $linkToAdvancedProperties;
} else {
