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<?php

/**
 * MvcCore
 *
 * This source file is subject to the BSD 3 License
 * For the full copyright and license information, please view
 * the LICENSE.md file that are distributed with this source code.
 *
 * @copyright   Copyright (c) 2016 Tom Flídr (https://github.com/mvccore/mvccore)
 * @license     https://mvccore.github.io/docs/mvccore/4.0.0/LICENCE.md
 */

namespace MvcCore\Ext\Debug\Tracy;

class SessionPanel implements \Tracy\IBarPanel
{
    /**
     * MvcCore Extension - Debug - Tracy Panel - Session - version:
     * Comparation by PHP function version_compare();
     * @see http://php.net/manual/en/function.version-compare.php
     */
    const VERSION = '4.2.0';
    
    const TYPE_PHP = 0;
    const TYPE_NAMESPACE = 1;

    const EXPIRATION_HOOPS = 1;
    const EXPIRATION_TIME = 2;

    /**
     * \MvcCore\Session meta info store key in $_SESSION
     * @var string 
     */
    public static $MetaStoreKey = \MvcCore\Session::SESSION_METADATA_KEY;
    /**
     * Readed session store as data printed in template
     * @var array
     */
    public static $Session = array();
    /**
     * Formated max. lifetime from \MvcCore\Session namespace
     * @var string
     */
    public static $SessionMaxLifeTime = '';
    /**
     * Debug panel id
     * @var string
     */
    public static $Id = 'session-panel';
    /**
     * Now time at \MvcCore\Ext\Debug\SessionPanel static init - mostly in request begin
     * @var int
     */
    public static $Now = 0;

    public function __construct () {
        self::$Now = time();
    }
    public function getId() {
        return self::$Id;
    }
    public function getTab() {
        ob_start();
        require(__DIR__ . '/assets/Bar/session.tab.phtml');
        return ob_get_clean();
    }
    public function getPanel() {
        $this->readSession();
        if (!self::$Session) return '';
        ob_start();
        require(__DIR__ . '/assets/Bar/session.panel.phtml');
        return ob_get_clean();
    }
    protected function readSession () {
        if (is_null($_SESSION)) return;

        // read \MvcCore\Session storage
        $sessionRawMetaStore = isset($_SESSION[self::$MetaStoreKey]) ? $_SESSION[self::$MetaStoreKey] : '';
        $sessionMetaStore = $sessionRawMetaStore ? unserialize($sessionRawMetaStore) : (object) array('names' => array());

        $maxLifeTimes = (object) array(
            'hoops'     => 0,
            'seconds'   => 0,
        );

        $standardRecords = array();
        $namespaceRecords = array();

        // look for each record in $_SESSION if data are defined as namespace in \MvcCore\Session meta store
        foreach ($_SESSION as $sessionKey => $sessionData) {
            if ($sessionKey === self::$MetaStoreKey) continue;
            $item = new \stdClass;
            $item->key = $sessionKey;
            $item->value = $this->_clickableDump($sessionData);
            if (isset($sessionMetaStore->names[$sessionKey])) {
                $item->type = self::TYPE_NAMESPACE;
                $item->expirations = array();
                if (isset($sessionMetaStore->hoops[$sessionKey])) {
                    $value = $sessionMetaStore->hoops[$sessionKey];
                    $item->expirations[] = (object) array(
                        'type'  => self::EXPIRATION_HOOPS,
                        'value' => $value,
                        'text'  => $value . ' hoops',
                    );
                    if ($value > $maxLifeTimes->hoops) $maxLifeTimes->hoops = $value;
                }
                if (isset($sessionMetaStore->expirations[$sessionKey])) {
                    $value = $sessionMetaStore->expirations[$sessionKey] - self::$Now;
                    $item->expirations[] = (object) array(
                        'type'  => self::EXPIRATION_TIME,
                        'value' => $value,
                        'text'  => $this->_formateDate($value),
                    );
                    if ($value > $maxLifeTimes->seconds) $maxLifeTimes->seconds = $value;
                }
                $namespaceRecords[$sessionKey] = $item;
            } else {
                $item->type = self::TYPE_PHP;
                $standardRecords[$sessionKey] = $item;
            }
        }

        ksort($standardRecords);
        ksort($namespaceRecords);
        self::$Session = array_merge($namespaceRecords, $standardRecords);

        $maxLifeTimesItems = array();
        if ($maxLifeTimes->seconds > 0) $maxLifeTimesItems[] = $this->_formateDate($maxLifeTimes->seconds);
        if ($maxLifeTimes->hoops > 0) $maxLifeTimesItems[] = $maxLifeTimes->hoops . ' hoops';
        self::$SessionMaxLifeTime = implode(', ', $maxLifeTimesItems);
    }
    
    private function _formateDate ($timestamp = 0) {
        //$timeFormated = '';
        $result = array();
        if ($timestamp >= 31557600) {
            $localVal = floor($timestamp / 31557600);
            $result[] = $localVal . ' year' . (($localVal > 1) ? 's' : '');
            $timestamp = $timestamp - (floor($timestamp / 31557600) * 31557600);
        }
        if ($timestamp >= 2592000) {
            $localVal = floor($timestamp / 2592000);
            $result[] = $localVal . ' month' . (($localVal > 1) ? 's' : '');
            $timestamp = $timestamp - (floor($timestamp / 2592000) * 2592000);
        }
        if ($timestamp >= 86400) {
            $localVal = floor($timestamp / 86400);
            $result[] = $localVal . ' day' . (($localVal > 1) ? 's' : '');
            $timestamp = $timestamp - (floor($timestamp / 86400) * 86400);
        }
        if ($timestamp >= 3600) {
            $localVal = floor($timestamp / 3600);
            $result[] = $localVal . ' hour' . (($localVal > 1) ? 's' : '');
            $timestamp = $timestamp - (floor($timestamp / 3600) * 3600);
        }
        if ($timestamp >= 60) {
            $localVal = floor($timestamp / 60);
            $result[] = $localVal . ' minute' . (($localVal > 1) ? 's' : '');
            $timestamp = $timestamp - (floor($timestamp / 60) * 60);
        }
        if ($timestamp > 0) {
            $localVal = floor($timestamp);
            if ($localVal > 1) $result[] = $localVal . ' seconds';
        }
        return implode(', ', $result);
    }

    /**
     * Dumps any variable to clickable html string reprezentation.
     * @param  mixed  $dump
     * @return string
     */
    private function _clickableDump ($dump) {
        return '<pre class="nette-dump">' . preg_replace_callback(
            '#^( *)((?>[^(]{1,200}))\((\d+)\) <code>#m',
            function ($m) {
                return "$m[1]<a href='#' rel='next'>$m[2]($m[3]) " . (
                    trim($m[1]) || $m[3] < 7 
                        ? 
                            '<abbr>&#x25bc;</abbr> </a><code>'
                        :
                            '<abbr>&#x25ba;</abbr> </a><code class="nette-collapsed">'
                    );
            },
            \Tracy\Dumper::toHtml($dump)
        ) . '</pre>';
    }
}