/**
* Adds a tag to a problem
*
* @param Request $r
* @return array
* @throws InvalidDatabaseOperationException
* @throws ForbiddenAccessException
*/
public static function apiAddTag(Request $r)
{
// Check problem_alias
Validators::isStringNonEmpty($r['problem_alias'], 'problem_alias');
// Authenticate logged user
self::authenticateRequest($r);
$problem = ProblemsDAO::getByAlias($r['problem_alias']);
if (!Authorization::IsProblemAdmin($r['current_user_id'], $problem)) {
throw new ForbiddenAccessException();
}
// Normalize name.
$tag_name = $r['name'];
Validators::isStringNonEmpty($tag_name, 'name');
$tag_name = TagController::normalize($tag_name);
try {
$tag = TagsDAO::getByName($tag_name);
} catch (Exception $e) {
$this->log->info($e);
// Operation failed in the data layer
throw new InvalidDatabaseOperationException($e);
}
if ($tag == null) {
try {
$tag = new Tags();
$tag->name = $tag_name;
TagsDAO::save($tag);
} catch (Exception $inner) {
$this->log->info($e);
// Operation failed in the data layer
throw new InvalidDatabaseOperationException($inner);
}
}
if (is_null($tag->tag_id)) {
throw new InvalidDatabaseOperationException(new Exception('tag'));
}
$problem_tag = new ProblemsTags();
$problem_tag->problem_id = $problem->problem_id;
$problem_tag->tag_id = $tag->tag_id;
$problem_tag->public = $r['public'] ? 1 : 0;
// Save the tag to the DB
try {
ProblemsTagsDAO::save($problem_tag);
} catch (Exception $e) {
// Operation failed in the data layer
self::$log->error('Failed to save tag', $e);
throw new InvalidDatabaseOperationException($e);
}
return array('status' => 'ok', 'name' => $tag_name);
}
