<?php

class Orange35_ProductImport_Helper_Timer extends Mage_Core_Helper_Abstract
{

    static private $_timers = array();
    static private $_startTime;
    static private $_endTime;

    const PADDING_COL = 35;
    const PADDING_COL_SECOND = 25;

    public function addTimer($name)
    {
        self::startTimer();
        if (!empty(static::$_timers)) {
            static::$_timers[count(static::$_timers) - 1]['duration'] =
                time() - static::$_timers[count(static::$_timers) - 1]['start'];
        }
        static::$_timers[] = array(
            'start' => time(),
            'name'  => $name
        );
    }

    public static function startTimer()
    {
        if (empty(static::$_startTime)) {
            /** @var Orange35_ProductImport_Helper_Data $helper */
            $helper = Mage::helper('orange35_productImport');
            $helper->log("timer start at", true);
            static::$_startTime = time();
        }
    }

    public function stopTimer()
    {
        if (empty(static::$_endTime)) {
            static::$_endTime = time();
            static::$_timers[count(static::$_timers) - 1]['duration'] =
                static::$_endTime - static::$_timers[count(static::$_timers) - 1]['start'];
        }
    }

    public function layoutTimers()
    {
        $this->stopTimer();
        $totalTime = static::$_endTime - static::$_startTime;
        $totalTime = max(0.1, $totalTime);
        $totalSaved = 0;
        foreach (static::$_timers as &$timer) {
            $timer['percent'] = $timer['duration'] / $totalTime * 100;
            $totalSaved += $timer['duration'];
        }
        unset($timer);
        $this->log("\nTimers list:");
        foreach (static::$_timers as $timer) {
            $this->log($timer['name'], $timer['duration'] . " sec", number_format($timer['percent'], 1) . "%");
        }
        $this->log("");
        $minSaved = number_format($totalSaved / 60, 2);
        $this->log("Total time (from timers): ", $totalSaved . " sec (" . $minSaved . " min)\n");
        return $this;
    }

    /**
     * @param $message
     * @param string $message2
     * @param string $message3
     * @return $this
     */
    protected function log($message, $message2 = '', $message3 = '')
    {
        $col1Padding = str_repeat(' ', self::PADDING_COL - strlen($message));
        if (!empty($message2)) {
            $message .= $col1Padding . $message2;
            if (!empty($message3)) {
                $col2Padding = str_repeat(' ', self::PADDING_COL_SECOND - strlen($message2));
                $message .= $col2Padding . $message3;
            }
        }
        /** @var Orange35_ProductImport_Helper_Data $helper */
        $helper = Mage::app()->getHelper('orange35_productImport');
        $helper->log($message);
        return $this;
    }
}