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<?php declare(strict_types = 1);
/**
 * Raw cache output.
 *
 * @package query-monitor
 */

class QM_Output_Raw_Cache extends QM_Output_Raw {

	/**
	 * Collector instance.
	 *
	 * @var QM_Collector_Cache Collector.
	 */
	protected $collector;

	/**
	 * @return string
	 */
	public function name() {
		return __( 'Object Cache', 'query-monitor' );
	}

	/**
	 * @return array<string, mixed>
	 */
	public function get_output() {
		$output = array(
			'hit_percentage' => null,
			'hits' => null,
			'misses' => null,
		);

		/** @var QM_Data_Cache $data */
		$data = $this->collector->get_data();

		if ( ! empty( $data->stats ) && ! empty( $data->cache_hit_percentage ) ) {
			$output['hit_percentage'] = round( $data->cache_hit_percentage, 1 );
			$output['hits'] = (int) $data->stats['cache_hits'];
			$output['misses'] = (int) $data->stats['cache_misses'];
		}

		return $output;
	}
}

/**
 * @param array<string, QM_Output> $output
 * @param QM_Collectors $collectors
 * @return array<string, QM_Output>
 */
function register_qm_output_raw_cache( array $output, QM_Collectors $collectors ) {
	$collector = QM_Collectors::get( 'cache' );
	if ( $collector ) {
		$output['cache'] = new QM_Output_Raw_Cache( $collector );
	}
	return $output;
}

add_filter( 'qm/outputter/raw', 'register_qm_output_raw_cache', 30, 2 );