/**
* @desc Validates fields and executes the provided method
*
* @param $method - Search method name to be called
* @param array $fields = array of required request field names
* @param bool $pagination - get pagination values from request
* @throws NotFoundApiException
* @throws InvalidParameterApiException
*/
private function executeSearch($method, array $fields = [], $pagination = false)
{
$searchParams = new LyricsApiSearchParams();
// Validate fields
foreach ($fields as $fieldName) {
$fieldValue = $this->wg->Request->getVal($fieldName);
if (empty($fieldValue)) {
throw new InvalidParameterApiException($fieldName);
}
$searchParams->addField($fieldName, $fieldValue);
}
// Get pagination
if ($pagination) {
list($limit, $offset) = $this->getPaginationParamsFromRequest();
$searchParams->setLimit($limit);
$searchParams->setOffset($offset);
}
$this->response->setFormat(WikiaResponse::FORMAT_JSON);
$results = $this->lyricsApiHandler->{$method}($searchParams);
// Validate result
if (is_null($results)) {
// New songs that we don't have yet are likely to get hit repeatedly by a
// ton of users until we get the song, so this is a special case where it
// is helpful to cache 404s for a little while.
$this->response->setCacheValidity(WikiaResponse::CACHE_VERY_SHORT);
throw new NotFoundApiException($this->getNotFoundDetails($method));
}
$this->response->setVal('result', $results);
$this->response->setCacheValidity(WikiaResponse::CACHE_STANDARD);
}
/**
* @desc Searches for a song lyrics in Solr index
*
* @param LyricsApiSearchParams $searchParams
*
* @return array|null
*/
public function searchLyrics(LyricsApiSearchParams $searchParams)
{
$query = $this->newQueryFromSearch(['type: %1%' => LyricsUtils::TYPE_SONG, 'lyrics: %P2%' => $searchParams->getField(LyricsApiController::PARAM_QUERY)]);
$query->setStart($searchParams->getOffset());
$query->setRows($searchParams->getLimit());
$hl = $query->getHighlighting();
$hl->setFields(self::INDEX_FIELD_NAME_LYRICS);
$hl->setSimplePrefix(self::HIGHLIGHT_PREFIX);
$hl->setSimplePostfix(self::HIGHLIGHT_POSTFIX);
$solrSongs = $this->client->select($query);
if ($solrSongs->getNumFound() <= 0) {
return null;
}
$songs = [];
$highlighting = $solrSongs->getHighlighting();
/** @var Solarium_Document_ReadOnly $solrSong */
foreach ($solrSongs as $solrSong) {
$fields = $solrSong->getFields();
$songs[] = $this->getOutputSong($solrSong, $highlighting->getResult($fields['id']), true);
}
return $songs;
}
