<?php
/**
* Browser performance handling
*
* Handles all browser performance operations and detection.
*
* @package System
* @author Pierre Lannoy <https://pierre.lannoy.fr/>.
* @since 1.0.0
*/
namespace Vibes\System;
use Vibes\System\GeoIP;
use Vibes\System\Conversion;
/**
* Define the browser performance functionality.
*
* Handles all browser performance operations and detection.
*
* @package System
* @author Pierre Lannoy <https://pierre.lannoy.fr/>.
* @since 1.0.0
*/
class BrowserPerformance {
/**
* The list of spans.
*
* @since 1.0.0
* @var array $spans Maintains the spans list.
*/
public static $spans = [ 'redirect', 'dns', 'tcp', 'ssl', 'wait', 'download' ];
/**
* The list of unrated metrics.
*
* @since 1.0.0
* @var array $unrated_metrics Maintains the unrated metrics list.
*/
public static $unrated_metrics = [ 'load', 'redirects', 'size', 'cache' ];
/**
* Get the storable value.
*
* @param string $metric The metric name.
* @param integer $value The current raw value of the metric.
* @return integer The storable value.
* @since 1.0.0
*/
public static function get_storable_value( $metric, $value ) {
return (int) round( $value, 2 );
}
/**
* Get the displayable value.
*
* @param string $metric The metric name.
* @param integer $value The current storable value of the metric.
* @return float The displayable value.
* @since 1.0.0
*/
public static function get_displayable_value( $metric, $value ) {
return (int) round( $value, 0 );
}
/**
* Get the information line about metric and value.
*
* @param array $metric The metric array.
* @return string The storable value.
* @since 1.0.0
*/
public static function get_info_line( $metric ) {
$initiator = '';
if ( array_key_exists( 'cache_sum', $metric ) ) {
$size = 'local cache';
} else {
$size = Conversion::data_shorten( $metric['size_sum'] ?? 0 );
}
if ( 'navigation' === $metric['type'] ) {
$host = $metric['endpoint'];
}
if ( 'resource' === $metric['type'] ) {
$host = $metric['endpoint'];
$initiator = $metric['initiator'];
}
$host .= ' (' . $size . ')';
if ( 'resource' === $metric['type'] ) {
$host .= ' from ' . $metric['authority'];
}
$cnx = 0;
foreach ( [ 'redirect', 'dns', 'tcp', 'ssl' ] as $span ) {
$field = 'span_' . $span . '_duration';
if ( array_key_exists( $field, $metric ) ) {
$cnx += $metric[ $field ];
}
}
$span = 'cnct:' . self::get_displayable_value( '', $cnx ) . 'ms ';
if ( array_key_exists( 'span_wait_duration', $metric ) ) {
$span .= 'wait:' . self::get_displayable_value( '', $metric['span_wait_duration'] ) . 'ms ';
}
if ( array_key_exists( 'span_download_duration', $metric ) ) {
$span .= 'dwld:' . self::get_displayable_value( '', $metric['span_download_duration'] ) . 'ms ';
}
return 'SPAN ' . strtoupper( str_pad( $initiator, 7 ) ) . $span . $host;
}
}