/**
* Gets a list of tags
*
* @param Request $r
*/
public function apiList(Request $r)
{
self::authenticateRequest($r);
$param = "";
if (!is_null($r["term"])) {
$param = "term";
} else {
if (!is_null($r["query"])) {
$param = "query";
} else {
throw new InvalidParameterException("parameterEmpty", "query");
}
}
try {
$tags = TagsDAO::FindByName($r[$param]);
} catch (Exception $e) {
throw new InvalidDatabaseOperationException($e);
}
$response = array();
foreach ($tags as $tag) {
$entry = array("name" => $tag->name);
array_push($response, $entry);
}
return $response;
}
/**
* Gets a list of tags
*
* @param Request $r
*/
public function apiList(Request $r)
{
self::authenticateRequest($r);
$param = '';
if (!is_null($r['term'])) {
$param = 'term';
} elseif (!is_null($r['query'])) {
$param = 'query';
} else {
throw new InvalidParameterException('parameterEmpty', 'query');
}
try {
$tags = TagsDAO::FindByName($r[$param]);
} catch (Exception $e) {
throw new InvalidDatabaseOperationException($e);
}
$response = array();
foreach ($tags as $tag) {
$entry = array('name' => $tag->name);
array_push($response, $entry);
}
return $response;
}
/**
* Removes a tag from a contest
*
* @param Request $r
* @return array
* @throws InvalidDatabaseOperationException
* @throws ForbiddenAccessException
*/
public static function apiRemoveTag(Request $r)
{
// Authenticate logged user
self::authenticateRequest($r);
// Check whether problem exists
Validators::isStringNonEmpty($r['problem_alias'], 'problem_alias');
try {
$problem = ProblemsDAO::getByAlias($r['problem_alias']);
$tag = TagsDAO::getByName($r['name']);
} catch (Exception $e) {
// Operation failed in the data layer
throw new InvalidDatabaseOperationException($e);
}
if (is_null($problem)) {
throw new NotFoundException('problem');
} elseif (is_null($tag)) {
throw new NotFoundException('tag');
}
if (!Authorization::IsProblemAdmin($r['current_user_id'], $problem)) {
throw new ForbiddenAccessException();
}
$problem_tag = new ProblemsTags();
$problem_tag->problem_id = $problem->problem_id;
$problem_tag->tag_id = $tag->tag_id;
// Delete the role
try {
ProblemsTagsDAO::delete($problem_tag);
} catch (Exception $e) {
// Operation failed in the data layer
throw new InvalidDatabaseOperationException($e);
}
return array('status' => 'ok');
}
