public function collections()
{
if (($this->method == 'POST' || $this->method == 'PUT') && !$this->body) {
$this->e400("{$this->method} data not provided");
}
$collections = array();
// Single collection
if (($this->objectID || $this->objectKey) && $this->subset != 'collections') {
$this->allowMethods(array('GET', 'PUT', 'DELETE'));
// If id, redirect to key URL
if ($this->objectID) {
$this->allowMethods(array('GET'));
$collection = Zotero_Collections::get($this->objectLibraryID, $this->objectID);
if (!$collection) {
$this->e404("Collection not found");
}
$qs = !empty($_SERVER['QUERY_STRING']) ? '?' . $_SERVER['QUERY_STRING'] : '';
header("Location: " . Zotero_API::getCollectionURI($collection) . $qs);
exit;
}
$collection = Zotero_Collections::getByLibraryAndKey($this->objectLibraryID, $this->objectKey);
if (!$collection) {
$this->e404("Collection not found");
}
// In single-collection mode, require public pref to be enabled
if (!$this->permissions->canAccess($this->objectLibraryID)) {
$this->e403();
}
if ($this->method == 'PUT' || $this->method == 'DELETE') {
if (!$this->permissions->canWrite($this->objectLibraryID)) {
$this->e403("Write access denied");
}
if (!Z_CONFIG::$TESTING_SITE || empty($_GET['skipetag'])) {
if (empty($_SERVER['HTTP_IF_MATCH'])) {
$this->e400("If-Match header not provided");
}
if (!preg_match('/^"?([a-f0-9]{32})"?$/', $_SERVER['HTTP_IF_MATCH'], $matches)) {
$this->e400("Invalid ETag in If-Match header");
}
if ($collection->etag != $matches[1]) {
$this->e412("ETag does not match current version of collection");
}
}
if ($this->method == 'PUT') {
$obj = $this->jsonDecode($this->body);
Zotero_Collections::updateFromJSON($collection, $obj);
$this->queryParams['format'] = 'atom';
$this->queryParams['content'] = array('json');
if ($cacheKey = $this->getWriteTokenCacheKey()) {
Z_Core::$MC->set($cacheKey, true, $this->writeTokenCacheTime);
}
} else {
Zotero_Collections::delete($this->objectLibraryID, $this->objectKey, true);
$this->e204();
}
}
$this->responseXML = Zotero_Collections::convertCollectionToAtom($collection, $this->queryParams['content']);
} else {
$this->allowMethods(array('GET', 'POST'));
if (!$this->permissions->canAccess($this->objectLibraryID)) {
$this->e403();
}
if ($this->scopeObject) {
$this->allowMethods(array('GET'));
switch ($this->scopeObject) {
case 'collections':
// If id, redirect to key URL
if ($this->scopeObjectID) {
$collection = Zotero_Collections::get($this->objectLibraryID, $this->scopeObjectID);
if (!$collection) {
$this->e404("Collection not found");
}
$qs = !empty($_SERVER['QUERY_STRING']) ? '?' . $_SERVER['QUERY_STRING'] : '';
header("Location: " . Zotero_API::getCollectionURI($collection) . $qs);
exit;
}
$collection = Zotero_Collections::getByLibraryAndKey($this->objectLibraryID, $this->scopeObjectKey);
if (!$collection) {
$this->e404("Collection not found");
}
$title = "Child Collections of ‘{$collection->name}'’";
$collectionIDs = $collection->getChildCollections();
break;
default:
throw new Exception("Invalid collections scope object '{$this->scopeObject}'");
}
} else {
// Top-level items
if ($this->subset == 'top') {
$this->allowMethods(array('GET'));
$title = "Top-Level Collections";
$results = Zotero_Collections::getAllAdvanced($this->objectLibraryID, true, $this->queryParams);
} else {
// Create a collection
if ($this->method == 'POST') {
if (!$this->permissions->canWrite($this->objectLibraryID)) {
$this->e403("Write access denied");
}
$obj = $this->jsonDecode($this->body);
$collection = Zotero_Collections::addFromJSON($obj, $this->objectLibraryID);
if ($cacheKey = $this->getWriteTokenCacheKey()) {
Z_Core::$MC->set($cacheKey, true, $this->writeTokenCacheTime);
}
$uri = Zotero_API::getCollectionURI($collection);
$queryString = "content=json";
if ($this->apiKey) {
$queryString .= "&key=" . $this->apiKey;
}
$uri .= "?" . $queryString;
$this->queryParams = Zotero_API::parseQueryParams($queryString, $this->action, true);
}
$title = "Collections";
$results = Zotero_Collections::getAllAdvanced($this->objectLibraryID, false, $this->queryParams);
}
$collections = $results['collections'];
$totalResults = $results['total'];
}
if (!empty($collectionIDs)) {
foreach ($collectionIDs as $collectionID) {
$collections[] = Zotero_Collections::get($this->objectLibraryID, $collectionID);
}
// Fake sorting and limiting
$totalResults = sizeOf($collections);
$key = $this->queryParams['order'];
if ($key == 'title') {
$key = 'name';
}
$dir = $this->queryParams['sort'];
usort($collections, function ($a, $b) use($key, $dir) {
$dir = $dir == "asc" ? 1 : -1;
if ($a->{$key} == $b->{$key}) {
return 0;
} else {
return $a->{$key} > $b->{$key} ? $dir : $dir * -1;
}
});
$collections = array_slice($collections, $this->queryParams['start'], $this->queryParams['limit']);
}
$this->responseXML = Zotero_Atom::createAtomFeed($this->getFeedNamePrefix($this->objectLibraryID) . $title, $this->uri, $collections, $totalResults, $this->queryParams, $this->apiVersion, $this->permissions);
}
$this->end();
}
