/**
* Fetches a collection of files by ParentID.
*
* @param HTTPRequest $request
* @return HTTPResponse
*/
public function apiReadFolder(HTTPRequest $request)
{
$params = $request->requestVars();
$items = array();
$parentId = null;
$folderID = null;
if (!isset($params['id']) && !strlen($params['id'])) {
$this->httpError(400);
}
$folderID = (int) $params['id'];
/** @var Folder $folder */
$folder = $folderID ? Folder::get()->byID($folderID) : Folder::singleton();
if (!$folder) {
$this->httpError(400);
}
// TODO Limit results to avoid running out of memory (implement client-side pagination)
$files = $this->getList()->filter('ParentID', $folderID);
if ($files) {
/** @var File $file */
foreach ($files as $file) {
if (!$file->canView()) {
continue;
}
$items[] = $this->getObjectFromData($file);
}
}
// Build parents (for breadcrumbs)
$parents = [];
$next = $folder->Parent();
while ($next && $next->exists()) {
array_unshift($parents, ['id' => $next->ID, 'title' => $next->getTitle(), 'filename' => $next->getFilename()]);
if ($next->ParentID) {
$next = $next->Parent();
} else {
break;
}
}
$column = 'title';
$direction = 'asc';
if (isset($params['sort'])) {
list($column, $direction) = explode(',', $params['sort']);
}
$multiplier = $direction === 'asc' ? 1 : -1;
usort($items, function ($a, $b) use($column, $multiplier) {
if (!isset($a[$column]) || !isset($b[$column])) {
return 0;
}
if ($a['type'] === 'folder' && $b['type'] !== 'folder') {
return -1;
}
if ($b['type'] === 'folder' && $a['type'] !== 'folder') {
return 1;
}
$numeric = is_numeric($a[$column]) && is_numeric($b[$column]);
$fieldA = $numeric ? floatval($a[$column]) : strtolower($a[$column]);
$fieldB = $numeric ? floatval($b[$column]) : strtolower($b[$column]);
if ($fieldA < $fieldB) {
return $multiplier * -1;
}
if ($fieldA > $fieldB) {
return $multiplier;
}
return 0;
});
$page = isset($params['page']) ? $params['page'] : 0;
$limit = isset($params['limit']) ? $params['limit'] : $this->config()->page_length;
$filteredItems = array_slice($items, $page * $limit, $limit);
// Build response
$response = new HTTPResponse();
$response->addHeader('Content-Type', 'application/json');
$response->setBody(json_encode(['files' => $filteredItems, 'title' => $folder->getTitle(), 'count' => count($items), 'parents' => $parents, 'parent' => $parents ? $parents[count($parents) - 1] : null, 'parentID' => $folder->exists() ? $folder->ParentID : null, 'folderID' => $folderID, 'canEdit' => $folder->canEdit(), 'canDelete' => $folder->canArchive()]));
return $response;
}
