/**
* Updates the tags of the specified file path.
* The passed tags are absolute, which means they will
* replace the actual tag selection.
*
* @param string $path path
* @param array $tags array of tags
* @return array list of tags
* @throws \OCP\Files\NotFoundException if the file does not exist
*/
public function updateFileTags($path, $tags)
{
$fileId = $this->homeFolder->get($path)->getId();
$currentTags = $this->tagger->getTagsForObjects(array($fileId));
if (!empty($currentTags)) {
$currentTags = current($currentTags);
}
$newTags = array_diff($tags, $currentTags);
foreach ($newTags as $tag) {
$this->tagger->tagAs($fileId, $tag);
}
$deletedTags = array_diff($currentTags, $tags);
foreach ($deletedTags as $tag) {
$this->tagger->unTag($fileId, $tag);
}
// TODO: re-read from tagger to make sure the
// list is up to date, in case of concurrent changes ?
return $tags;
}
/**
* Checks whether the given file has the given tag.
*
* @param \OCP\ITags $tagger
* @param array $fileData file data
* @param string $tag tag to check for
* @return boolean true if the given file has the expected tag,
* false otherwise
*/
private function hasTag($tagger, $fileData, $tag)
{
$tags = $tagger->getTagsForObjects(array((int) $fileData['fileid']));
return !empty($tags) && in_array($tag, current($tags));
}
