<?php
/**
 * Timing functions for the run.
 *
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
 */

namespace PHP_CodeSniffer\Util;

class Timing
{

    /**
     * The start time of the run.
     *
     * @var float
     */
    private static $startTime;

    /**
     * Used to make sure we only print the run time once per run.
     *
     * @var boolean
     */
    private static $printed = false;


    /**
     * Start recording time for the run.
     *
     * @return void
     */
    public static function startTiming()
    {

        self::$startTime = microtime(true);

    }//end startTiming()


    /**
     * Print information about the run.
     *
     * @param boolean $force If TRUE, prints the output even if it has
     *                       already been printed during the run.
     *
     * @return void
     */
    public static function printRunTime($force=false)
    {
        if ($force === false && self::$printed === true) {
            // A double call.
            return;
        }

        if (self::$startTime === null) {
            // Timing was never started.
            return;
        }

        $time = ((microtime(true) - self::$startTime) * 1000);

        if ($time > 60000) {
            $mins = floor($time / 60000);
            $secs = round((($time % 60000) / 1000), 2);
            $time = $mins.' mins';
            if ($secs !== 0) {
                $time .= ", $secs secs";
            }
        } else if ($time > 1000) {
            $time = round(($time / 1000), 2).' secs';
        } else {
            $time = round($time).'ms';
        }

        $mem = round((memory_get_peak_usage(true) / (1024 * 1024)), 2).'MB';
        echo "Time: $time; Memory: $mem".PHP_EOL.PHP_EOL;

        self::$printed = true;

    }//end printRunTime()


}//end class