<?php

if (!defined('AOWOW_REVISION'))
    die('illegal access');


class SimpleXML extends SimpleXMLElement
{
    public function addCData($str)
    {
        $node = dom_import_simplexml($this);
        $no   = $node->ownerDocument;
        $node->appendChild($no->createCDATASection($str));

        return $this;
    }
}

class Util
{
    const FILE_ACCESS = 0755;

    public static $localeStrings            = array(        // zero-indexed
        'enus',         null,           'frfr',         'dede',         null,           null,           'eses',         null,           'ruru'
    );

    public static $subDomains               = array(
        'www',          null,           'fr',           'de',           null,           null,           'es',           null,           'ru'
    );

    public static $typeClasses              = array(
        null,               'CreatureList',     'GameObjectList',   'ItemList',         'ItemsetList',      'QuestList',        'SpellList',
        'ZoneList',         'FactionList',      'PetList',          'AchievementList',  'TitleList',        'WorldEventList',   'CharClassList',
        'CharRaceList',     'SkillList',        null,               'CurrencyList',     null,               'SoundList',
        TYPE_ICON        => 'IconList',
        TYPE_EMOTE       => 'EmoteList',
        TYPE_ENCHANTMENT => 'EnchantmentList'
    );

    public static $typeStrings              = array(        // zero-indexed
        null,           'npc',          'object',       'item',         'itemset',      'quest',        'spell',        'zone',         'faction',
        'pet',          'achievement',  'title',        'event',        'class',        'race',         'skill',        null,           'currency',
        null,           'sound',
        TYPE_ICON        => 'icon',
        TYPE_USER        => 'user',
        TYPE_EMOTE       => 'emote',
        TYPE_ENCHANTMENT => 'enchantment'
    );

    # todo (high): find a sensible way to write data here on setup
    private static $gtCombatRatings         = array(
        12 => 1.5,      13 => 13.8,     14 => 13.8,     15 => 5,        16 => 10,       17 => 10,       18 => 8,        19 => 14,       20 => 14,
        21 => 14,       22 => 10,       23 => 10,       24 => 8,        25 => 0,        26 => 0,        27 => 0,        28 => 10,       29 => 10,
        30 => 10,       31 => 10,       32 => 14,       33 => 0,        34 => 0,        35 => 28.75,    36 => 10,       37 => 2.5,      44 => 4.268292513760655
    );

    public static $itemFilter               = array(
         20 => 'str',                21 => 'agi',                23 => 'int',                22 => 'sta',                24 => 'spi',                25 => 'arcres',             26 => 'firres',             27 => 'natres',
         28 => 'frores',             29 => 'shares',             30 => 'holres',             37 => 'mleatkpwr',          32 => 'dps',                35 => 'damagetype',         33 => 'dmgmin1',            34 => 'dmgmax1',
         36 => 'speed',              38 => 'rgdatkpwr',          39 => 'rgdhitrtng',         40 => 'rgdcritstrkrtng',    41 => 'armor',              44 => 'blockrtng',          43 => 'block',              42 => 'defrtng',
         45 => 'dodgertng',          46 => 'parryrtng',          48 => 'splhitrtng',         49 => 'splcritstrkrtng',    50 => 'splheal',            51 => 'spldmg',             52 => 'arcsplpwr',          53 => 'firsplpwr',
         54 => 'frosplpwr',          55 => 'holsplpwr',          56 => 'natsplpwr',          60 => 'healthrgn',          61 => 'manargn',            57 => 'shasplpwr',          77 => 'atkpwr',             78 => 'mlehastertng',
         79 => 'resirtng',           84 => 'mlecritstrkrtng',    94 => 'splpen',             95 => 'mlehitrtng',         96 => 'critstrkrtng',       97 => 'feratkpwr',         100 => 'nsockets',          101 => 'rgdhastertng',
        102 => 'splhastertng',      103 => 'hastertng',         114 => 'armorpenrtng',      115 => 'health',            116 => 'mana',              117 => 'exprtng',           119 => 'hitrtng',           123 => 'splpwr',
        134 => 'mledps',            135 => 'mledmgmin',         136 => 'mledmgmax',         137 => 'mlespeed',          138 => 'rgddps',            139 => 'rgddmgmin',         140 => 'rgddmgmax',         141 => 'rgdspeed'
    );

    public static $ssdMaskFields            = array(
        'shoulderMultiplier',           'trinketMultiplier',            'weaponMultiplier',             'primBudged',
        'rangedMultiplier',             'clothShoulderArmor',           'leatherShoulderArmor',         'mailShoulderArmor',
        'plateShoulderArmor',           'weaponDPS1H',                  'weaponDPS2H',                  'casterDPS1H',
        'casterDPS2H',                  'rangedDPS',                    'wandDPS',                      'spellPower',
        null,                           null,                           'tertBudged',                   'clothCloakArmor',
        'clothChestArmor',              'leatherChestArmor',            'mailChestArmor',               'plateChestArmor'
    );

    public static $weightScales             = array(
        'agi',             'int',             'sta',          'spi',          'str',       'health',          'mana',         'healthrgn', 'manargn',
        'armor',           'blockrtng',       'block',        'defrtng',      'dodgertng', 'parryrtng',       'resirtng',
        'atkpwr',          'feratkpwr',       'armorpenrtng', 'critstrkrtng', 'exprtng',   'hastertng',       'hitrtng',      'splpen',
        'splpwr',          'arcsplpwr',       'firsplpwr',    'frosplpwr',    'holsplpwr', 'natsplpwr',       'shasplpwr',
        'dmg',             'mledps',          'rgddps',       'mledmgmin',    'rgddmgmin', 'mledmgmax',       'rgddmgmax',    'mlespeed',  'rgdspeed',
        'arcres',          'firres',          'frores',       'holres',       'natres',    'shares',
        'mleatkpwr',       'mlecritstrkrtng', 'mlehastertng', 'mlehitrtng',   'rgdatkpwr', 'rgdcritstrkrtng', 'rgdhastertng', 'rgdhitrtng',
        'splcritstrkrtng', 'splhastertng',    'splhitrtng',   'spldmg',       'splheal',
        'nsockets'
    );

    public static $dateFormatInternal       = "Y/m/d H:i:s";

    public static $changeLevelString        = '<a href="javascript:;" onmousedown="return false" class="tip" style="color: white; cursor: pointer" onclick="$WH.g_staticTooltipLevelClick(this, null, 0)" onmouseover="$WH.Tooltip.showAtCursor(event, \'<span class=\\\'q2\\\'>\' + LANG.tooltip_changelevel + \'</span>\')" onmousemove="$WH.Tooltip.cursorUpdate(event)" onmouseout="$WH.Tooltip.hide()"><!--lvl-->%s</a>';

    public static $setRatingLevelString     = '<a href="javascript:;" onmousedown="return false" class="tip" style="color: white; cursor: pointer" onclick="$WH.g_setRatingLevel(this, %s, %s, %s)" onmouseover="$WH.Tooltip.showAtCursor(event, \'<span class=\\\'q2\\\'>\' + LANG.tooltip_changelevel + \'</span>\')" onmousemove="$WH.Tooltip.cursorUpdate(event)" onmouseout="$WH.Tooltip.hide()">%s</a>';

    public static $filterResultString       = '$$WH.sprintf(LANG.lvnote_filterresults, \'%s\')';
    public static $tryFilteringString       = '$$WH.sprintf(%s, %s, %s) + LANG.dash + LANG.lvnote_tryfiltering.replace(\'<a>\', \'<a href="javascript:;" onclick="fi_toggle()">\')';
    public static $tryFilteringEntityString = '$$WH.sprintf(LANG.lvnote_entitiesfound, %s, %s, %s) + LANG.dash + LANG.lvnote_tryfiltering.replace(\'<a>\', \'<a href="javascript:;" onclick="fi_toggle()">\')';
    public static $tryNarrowingString       = '$$WH.sprintf(%s, %s, %s) + LANG.dash + LANG.lvnote_trynarrowing';

    public static $dfnString                = '<dfn title="%s" class="w">%s</dfn>';

    public static $mapSelectorString        = '<a href="javascript:;" onclick="myMapper.update({zone: %d}); g_setSelectedLink(this, \'mapper\'); return false" onmousedown="return false">%s</a>&nbsp;(%d)';

    public static $expansionString          = array(        // 3 & 4 unused .. obviously
        null,           'bc',           'wotlk',            'cata',                'mop'
    );

    public static $bgImagePath              = array (
        'tiny'   => 'style="background-image: url(%s/images/wow/icons/tiny/%s.gif)"',
        'small'  => 'style="background-image: url(%s/images/wow/icons/small/%s.jpg)"',
        'medium' => 'style="background-image: url(%s/images/wow/icons/medium/%s.jpg)"',
        'large'  => 'style="background-image: url(%s/images/wow/icons/large/%s.jpg)"',
    );

    public static $configCats               = array(
        'Other', 'Site', 'Caching', 'Account', 'Session', 'Site Reputation', 'Google Analytics'
    );

    public static $tcEncoding               = '0zMcmVokRsaqbdrfwihuGINALpTjnyxtgevElBCDFHJKOPQSUWXYZ123456789';
    public static $wowheadLink              = '';
    private static $notes                   = [];

    public static function addNote($uGroupMask, $str)
    {
        self::$notes[] = [$uGroupMask, $str];
    }

    public static function getNotes()
    {
        $notes = [];

        foreach (self::$notes as $data)
            if (!$data[0] || User::isInGroup($data[0]))
                $notes[] = $data[1];

        return $notes;
    }

    private static $execTime = 0.0;

    public static function execTime($set = false)
    {
        if ($set)
        {
            self::$execTime = microTime(true);
            return;
        }

        if (!self::$execTime)
            return;

        $newTime        = microTime(true);
        $tDiff          = $newTime - self::$execTime;
        self::$execTime = $newTime;

        return self::formatTime($tDiff * 1000, true);
    }

    public static function getBuyoutForItem($itemId)
    {
        if (!$itemId)
            return 0;

        // try, when having filled char-DB at hand
        // return DB::Characters()->selectCell('SELECT SUM(a.buyoutprice) / SUM(ii.count) FROM auctionhouse a JOIN item_instance ii ON ii.guid = a.itemguid WHERE ii.itemEntry = ?d', $itemId);
        return 0;
    }

    public static function formatMoney($qty)
    {
        $money = '';

        if ($qty >= 10000)
        {
            $g = floor($qty / 10000);
            $money .= '<span class="moneygold">'.$g.'</span> ';
            $qty -= $g * 10000;
        }

        if ($qty >= 100)
        {
            $s = floor($qty / 100);
            $money .= '<span class="moneysilver">'.$s.'</span> ';
            $qty -= $s * 100;
        }

        if ($qty > 0)
            $money .= '<span class="moneycopper">'.$qty.'</span>';

        return $money;
    }

    public static function parseTime($sec)
    {
        $time = ['d' => 0, 'h' => 0, 'm' => 0, 's' => 0, 'ms' => 0];

        if ($sec >= 3600 * 24)
        {
            $time['d'] = floor($sec / 3600 / 24);
            $sec -= $time['d'] * 3600 * 24;
        }

        if ($sec >= 3600)
        {
            $time['h'] = floor($sec / 3600);
            $sec -= $time['h'] * 3600;
        }

        if ($sec >= 60)
        {
            $time['m'] = floor($sec / 60);
            $sec -= $time['m'] * 60;
        }

        if ($sec > 0)
        {
            $time['s'] = (int)$sec;
            $sec -= $time['s'];
        }

        if (($sec * 1000) % 1000)
            $time['ms'] = (int)($sec * 1000);

        return $time;
    }

    public static function formatTime($base, $short = false)
    {
        $s = self::parseTime($base / 1000);
        $fmt = [];

        if ($short)
        {
            if ($_ = round($s['d'] / 364))
                return $_." ".Lang::timeUnits('ab', 0);
            if ($_ = round($s['d'] / 30))
                return $_." ".Lang::timeUnits('ab', 1);
            if ($_ = round($s['d'] / 7))
                return $_." ".Lang::timeUnits('ab', 2);
            if ($_ = round($s['d']))
                return $_." ".Lang::timeUnits('ab', 3);
            if ($_ = round($s['h']))
                return $_." ".Lang::timeUnits('ab', 4);
            if ($_ = round($s['m']))
                return $_." ".Lang::timeUnits('ab', 5);
            if ($_ = round($s['s'] + $s['ms'] / 1000, 2))
                return $_." ".Lang::timeUnits('ab', 6);
            if ($s['ms'])
                return $s['ms']." ".Lang::timeUnits('ab', 7);

            return '0 '.Lang::timeUnits('ab', 6);
        }
        else
        {
            $_ = $s['d'] + $s['h'] / 24;
            if ($_ > 1 && !($_ % 364))                      // whole years
                return round(($s['d'] + $s['h'] / 24) / 364, 2)." ".Lang::timeUnits($s['d'] / 364 == 1 && !$s['h'] ? 'sg' : 'pl', 0);
            if ($_ > 1 && !($_ % 30))                       // whole month
                return round(($s['d'] + $s['h'] / 24) /  30, 2)." ".Lang::timeUnits($s['d'] /  30 == 1 && !$s['h'] ? 'sg' : 'pl', 1);
            if ($_ > 1 && !($_ % 7))                        // whole weeks
                return round(($s['d'] + $s['h'] / 24) /   7, 2)." ".Lang::timeUnits($s['d'] /   7 == 1 && !$s['h'] ? 'sg' : 'pl', 2);
            if ($s['d'])
                return round($s['d'] + $s['h']  /   24, 2)." ".Lang::timeUnits($s['d'] == 1 && !$s['h']  ? 'sg' : 'pl', 3);
            if ($s['h'])
                return round($s['h'] + $s['m']  /   60, 2)." ".Lang::timeUnits($s['h'] == 1 && !$s['m']  ? 'sg' : 'pl', 4);
            if ($s['m'])
                return round($s['m'] + $s['s']  /   60, 2)." ".Lang::timeUnits($s['m'] == 1 && !$s['s']  ? 'sg' : 'pl', 5);
            if ($s['s'])
                return round($s['s'] + $s['ms'] / 1000, 2)." ".Lang::timeUnits($s['s'] == 1 && !$s['ms'] ? 'sg' : 'pl', 6);
            if ($s['ms'])
                return $s['ms']." ".Lang::timeUnits($s['ms'] == 1 ? 'sg' : 'pl', 7);

            return '0 '.Lang::timeUnits('pl', 6);
        }
    }

    // pageText for Books (Item or GO) and questText
    public static function parseHtmlText($text)
    {
        if (stristr($text, '<HTML>'))                       // text is basically a html-document with weird linebreak-syntax
        {
            $pairs = array(
                '<HTML>'    => '',
                '</HTML>'   => '',
                '<BODY>'    => '',
                '</BODY>'   => '',
                '<BR></BR>' => '<br />'
            );

            // html may contain 'Pictures' and FlavorImages and "stuff"
            $text = preg_replace_callback(
                '/src="([^"]+)"/i',
                function ($m) { return 'src="'.STATIC_URL.'/images/wow/'.strtr($m[1], ['\\' => '/']).'.png"'; },
                strtr($text, $pairs)
            );
        }
        else
            $text = strtr($text, ["\n" => '<br />', "\r" => '']);

        $from = array(
            '/\|T([\w]+\\\)*([^\.]+)\.blp:\d+\|t/ui',       // images (force size to tiny)                      |T<fullPath>:<size>|t
            '/\|c(\w{6})\w{2}([^\|]+)\|r/ui',               // color                                            |c<RRGGBBAA><text>|r
            '/\$g\s*([^:;]+)\s*:\s*([^:;]+)\s*(:?[^:;]*);/ui',// directed gender-reference                      $g:<male>:<female>:<refVariable>
            '/\$t([^;]+);/ui',                              // nonsense, that the client apparently ignores
            '/\|\d\-?\d?\((\$\w)\)/ui',                     // and another modifier for something russian       |3-6($r)
            '/<([^\"=\/>]+\s[^\"=\/>]+)>/ui',               // emotes (workaround: at least one whitespace and never " or = between brackets)
            '/\$(\d+)w/ui'                                  // worldState(?)-ref found on some pageTexts        $1234w
        );

        $to = array(
            '<span class="icontiny" style="background-image: url('.STATIC_URL.'/images/wow/icons/tiny/\2.gif)">',
            '<span style="color: #\1">\2</span>',
            '&lt;\1/\2&gt;',
            '',
            '\1',
            '&lt;\1&gt;',
            '<span class="q0">WorldState #\1</span>'
        );

        $text = preg_replace($from, $to, $text);

        $pairs = array(
            '$c' => '&lt;'.Lang::game('class').'&gt;',
            '$C' => '&lt;'.Lang::game('class').'&gt;',
            '$r' => '&lt;'.Lang::game('race').'&gt;',
            '$R' => '&lt;'.Lang::game('race').'&gt;',
            '$n' => '&lt;'.Lang::main('name').'&gt;',
            '$N' => '&lt;'.Lang::main('name').'&gt;',
            '$b' => '<br />',
            '$B' => '<br />',
            '|n' => ''                                      // what .. the fuck .. another type of line terminator? (only in spanish though)
        );

        return strtr($text, $pairs);
    }

    public static function asHex($val)
    {
        $_ = decHex($val);
        while (fMod(strLen($_), 4))                         // in 4-blocks
            $_ = '0'.$_;

        return '0x'.strToUpper($_);
    }

    public static function asBin($val)
    {
        $_ = decBin($val);
        while (fMod(strLen($_), 4))                         // in 4-blocks
            $_ = '0'.$_;

        return 'b'.strToUpper($_);
    }

    public static function htmlEscape($data)
    {
        if (is_array($data))
        {
            foreach ($data as &$v)
                $v = self::htmlEscape($v);

            return $data;
        }

        return htmlspecialchars(trim($data), ENT_QUOTES, 'utf-8');
    }

    public static function jsEscape($data)
    {
        if (is_array($data))
        {
            foreach ($data as &$v)
                $v = self::jsEscape($v);

            return $data;
        }

        return strtr(trim($data), array(
            '\\' => '\\\\',
            "'"  => "\\'",
            '"'  => '\\"',
            "\r" => '\\r',
            "\n" => '\\n'
        ));
    }

    public static function defStatic($data)
    {
        if (is_array($data))
        {
            foreach ($data as &$v)
                $v = self::defStatic($v);

            return $data;
        }

        return strtr($data, array(
            '<script'    => '<scr"+"ipt',
            'script>'    => 'scr"+"ipt>',
            'HOST_URL'   => HOST_URL,
            'STATIC_URL' => STATIC_URL
        ));
    }

    // default back to enUS if localization unavailable
    public static function localizedString($data, $field, $silent = false)
    {
        // default case: selected locale available
        if (!empty($data[$field.'_loc'.User::$localeId]))
            return $data[$field.'_loc'.User::$localeId];

        // locale not enUS; aowow-type localization available; add brackets if not silent
        else if (User::$localeId != LOCALE_EN && !empty($data[$field.'_loc0']))
            return $silent ? $data[$field.'_loc0'] : '['.$data[$field.'_loc0'].']';

        // locale not enUS; TC localization; add brackets if not silent
        else if (User::$localeId != LOCALE_EN && !empty($data[$field]))
            return $silent ? $data[$field] : '['.$data[$field].']';

        // locale enUS; TC localization; return normal
        else if (User::$localeId == LOCALE_EN && !empty($data[$field]))
            return $data[$field];

        // nothing to find; be empty
        else
            return '';
    }

    // for item and spells
    public static function setRatingLevel($level, $type, $val)
    {
        if (in_array($type, [ITEM_MOD_DEFENSE_SKILL_RATING, ITEM_MOD_DODGE_RATING, ITEM_MOD_PARRY_RATING, ITEM_MOD_BLOCK_RATING, ITEM_MOD_RESILIENCE_RATING]) && $level < 34)
            $level = 34;

        if (!isset(self::$gtCombatRatings[$type]))
            $result = 0;
        else
        {
            if ($level > 70)
                $c = 82 / 52 * pow(131 / 63, ($level - 70) / 10);
            else if ($level > 60)
                $c = 82 / (262 - 3 * $level);
            else if ($level > 10)
                $c = ($level - 8) / 52;
            else
                $c = 2 / 52;

            // do not use localized number format here!
            $result = number_format($val / self::$gtCombatRatings[$type] / $c, 2);
        }

        if (!in_array($type, array(ITEM_MOD_DEFENSE_SKILL_RATING, ITEM_MOD_EXPERTISE_RATING)))
            $result .= '%';

        return sprintf(Lang::item('ratingString'), '<!--rtg%'.$type.'-->'.$result, '<!--lvl-->'.$level);
    }

    public static function powerUseLocale($domain = 'www')
    {
        foreach (Util::$localeStrings as $k => $v)
        {
            if (strstr($v, $domain))
            {
                User::useLocale($k);
                Lang::load(User::$localeString);
                return;
            }
        }

        if ($domain == 'www')
        {
            User::useLocale(LOCALE_EN);
            Lang::load(User::$localeString);
        }
    }

    // default ucFirst doesn't convert UTF-8 chars
    public static function ucFirst($str)
    {
        $len   = mb_strlen($str) - 1;
        $first = mb_substr($str, 0, 1);
        $rest  = mb_substr($str, 1, $len);

        return mb_strtoupper($first).$rest;
    }

    public static function ucWords($str)
    {
        return mb_convert_case($str, MB_CASE_TITLE);
    }

    public static function lower($str)
    {
        return mb_strtolower($str);
    }

    // note: valid integer > 32bit are returned as float
    public static function checkNumeric(&$data, $typeCast = NUM_ANY)
    {
        if ($data === null)
            return false;
        else if (!is_array($data))
        {
            $data = trim($data);
            if (preg_match('/^-?\d*,\d+$/', $data))
                $data = strtr($data, ',', '.');

            if (is_numeric($data))
            {
                $data += 0;                                 // becomes float or int

                if ((is_float($data) && $typeCast == NUM_REQ_INT) ||
                    (is_int($data) && $typeCast == NUM_REQ_FLOAT))
                    return false;

                if (is_float($data) && $typeCast == NUM_CAST_INT)
                    $data = intval($data);

                if (is_int($data) && $typeCast == NUM_CAST_FLOAT)
                    $data = floatval($data);

                return true;
            }

            return false;
        }

        array_walk($data, function(&$x) use($typeCast) { self::checkNumeric($x, $typeCast); });

        return false;                                       // always false for passed arrays
    }

    public static function arraySumByKey(&$ref)
    {
        $nArgs = func_num_args();
        if (!is_array($ref) || $nArgs < 2)
            return;

        for ($i = 1; $i < $nArgs; $i++)
        {
            $arr = func_get_arg($i);
            if (!is_array($arr))
                continue;

            foreach ($arr as $k => $v)
            {
                if (!isset($ref[$k]))
                    $ref[$k] = 0;

                $ref[$k] += $v;
            }
        }
    }

    public static function urlize($str)
    {
        $search  = ['<', '>', ' / ', "'", '(', ')'];
        $replace = ['&lt;', '&gt;', '-', '', '', ''];
        $str = str_replace($search, $replace, $str);

        $accents = array(
            "ß" => "ss",
            "á" => "a", "ä" => "a", "à" => "a", "â" => "a",
            "è" => "e", "ê" => "e", "é" => "e", "ë" => "e",
            "í" => "i", "î" => "i", "ì" => "i", "ï" => "i",
            "ñ" => "n",
            "ò" => "o", "ó" => "o", "ö" => "o", "ô" => "o",
            "ú" => "u", "ü" => "u", "û" => "u", "ù" => "u",
            "œ" => "oe",
            "Á" => "A", "Ä" => "A", "À" => "A", "Â" => "A",
            "È" => "E", "Ê" => "E", "É" => "E", "Ë" => "E",
            "Í" => "I", "Î" => "I", "Ì" => "I", "Ï" => "I",
            "Ñ" => "N",
            "Ò" => "O", "Ó" => "O", "Ö" => "O", "Ô" => "O",
            "Ú" => "U", "Ü" => "U", "Û" => "U", "Ù" => "U",
            "œ" => "Oe"
        );
        $str = strtr($str, $accents);
        $str = trim($str);
        $str = preg_replace('/[^a-z0-9]/i', '-', $str);

        $str = str_replace('--', '-', $str);
        $str = str_replace('--', '-', $str);

        $str = rtrim($str, '-');
        $str = strtolower($str);

        return $str;
    }

    public static function isValidEmail($email)
    {
        return preg_match('/^([a-z0-9._-]+)(\+[a-z0-9._-]+)?(@[a-z0-9.-]+\.[a-z]{2,4})$/i', $email);
    }

    public static function loadStaticFile($file, &$result, $localized = false)
    {
        $success = true;
        if ($localized)
        {
            if (file_exists('datasets/'.User::$localeString.'/'.$file))
                $result .= file_get_contents('datasets/'.User::$localeString.'/'.$file);
            else if (file_exists('datasets/enus/'.$file))
                $result .= file_get_contents('datasets/enus/'.$file);
            else
                $success = false;
        }
        else
        {
            if (file_exists('datasets/'.$file))
                $result .= file_get_contents('datasets/'.$file);
            else
                $success = false;
        }

        return $success;
    }

    public static function createHash($length = 40)         // just some random numbers for unsafe identifictaion purpose
    {
        static $seed = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        $hash = '';

        for ($i = 0; $i < $length; $i++)
            $hash .= substr($seed, mt_rand(0, 61), 1);

        return $hash;
    }

    public static function mergeJsGlobals(&$master)
    {
        $args = func_get_args();
        if (count($args) < 2)                               // insufficient args
            return false;

        if (!is_array($master))
            $master = [];

        for ($i = 1; $i < count($args); $i++)               // skip first (master) entry
        {
            foreach ($args[$i] as $type => $data)
            {
                // bad data or empty
                if (empty(Util::$typeStrings[$type]) || !is_array($data) || !$data)
                    continue;

                if (!isset($master[$type]))
                    $master[$type] = [];

                foreach ($data as $k => $d)
                {
                    if (!isset($master[$type][$k]))         // int: id, yet to look up
                        $master[$type][$k] = $d;
                    else if (is_array($d))                  // array: already fetched data (overwrite old value if set)
                        $master[$type][$k] = $d;
                    // else                                 // id overwrites data .. do not want
                }
            }
        }

        return true;
    }

    public static function gainSiteReputation($user, $action, $miscData = [])
    {
        if (!$user || !$action)
            return false;

        $x = [];

        switch ($action)
        {
            case SITEREP_ACTION_REGISTER:
                $x['amount'] = CFG_REP_REWARD_REGISTER;
                break;
            case SITEREP_ACTION_DAILYVISIT:
                $x['sourceA'] = time();
                $x['amount']  = CFG_REP_REWARD_DAILYVISIT;
                break;
            case SITEREP_ACTION_COMMENT:
                if (empty($miscData['id']))
                    return false;

                $x['sourceA'] = $miscData['id'];            // commentId
                $x['amount']  = CFG_REP_REWARD_COMMENT;
                break;
            case SITEREP_ACTION_UPVOTED:
            case SITEREP_ACTION_DOWNVOTED:
                if (empty($miscData['id']) || empty($miscData['voterId']))
                    return false;

                DB::Aowow()->query(                         // delete old votes the user has cast
                    'DELETE FROM ?_account_reputation WHERE sourceA = ?d AND sourceB = ?d AND userId = ?d AND action IN (?a)',
                    $miscData['id'],
                    $miscData['voterId'],
                    $user,
                    [SITEREP_ACTION_UPVOTED, SITEREP_ACTION_DOWNVOTED]
                );

                $x['sourceA'] = $miscData['id'];            // commentId
                $x['sourceB'] = $miscData['voterId'];
                $x['amount']  = $action == SITEREP_ACTION_UPVOTED ? CFG_REP_REWARD_UPVOTED : CFG_REP_REWARD_DOWNVOTED;
                break;
            case SITEREP_ACTION_UPLOAD:
                if (empty($miscData['id']) || empty($miscData['what']))
                    return false;

                $x['sourceA'] = $miscData['id'];            // screenshotId or videoId
                $x['sourceB'] = $miscData['what'];          // screenshot:1 or video:NYD
                $x['amount']  = CFG_REP_REWARD_UPLOAD;
                break;
            case SITEREP_ACTION_GOOD_REPORT:                // NYI
            case SITEREP_ACTION_BAD_REPORT:
                if (empty($miscData['id']))                 // reportId
                    return false;

                $x['sourceA'] = $miscData['id'];
                $x['amount']  = $action == SITEREP_ACTION_GOOD_REPORT ? CFG_REP_REWARD_GOOD_REPORT : CFG_REP_REWARD_BAD_REPORT;
                break;
            case SITEREP_ACTION_ARTICLE:                    // NYI
                if (empty($miscData['id']))                 // reportId
                    return false;

                $x['sourceA'] = $miscData['id'];
                $x['amount']  = CFG_REP_REWARD_ARTICLE;
                break;
            case SITEREP_ACTION_USER_WARNED:                // NYI
            case SITEREP_ACTION_USER_SUSPENDED:
                if (empty($miscData['id']))                 // banId
                    return false;

                $x['sourceA'] = $miscData['id'];
                $x['amount']  = $action == SITEREP_ACTION_USER_WARNED ? CFG_REP_REWARD_USER_WARNED : CFG_REP_REWARD_USER_SUSPENDED;
                break;
        }

        $x = array_merge($x, array(
            'userId' => $user,
            'action' => $action,
            'date'   => !empty($miscData['date']) ? $miscData['date'] : time()
        ));

        return DB::Aowow()->query('INSERT IGNORE INTO ?_account_reputation (?#) VALUES (?a)', array_keys($x), array_values($x));
    }

    public static function getServerConditions($srcType, $srcGroup = null, $srcEntry = null)
    {
        if (!$srcGroup && !$srcEntry)
            return [];

        $result    = [];
        $jsGlobals = [];

        $conditions = DB::World()->select(
            'SELECT  SourceTypeOrReferenceId, SourceEntry, SourceGroup, ElseGroup,
                     ConditionTypeOrReference, ConditionTarget, ConditionValue1, ConditionValue2, ConditionValue3, NegativeCondition
            FROM     conditions
            WHERE    SourceTypeOrReferenceId IN (?a) AND ?# = ?d
            ORDER BY SourceTypeOrReferenceId, SourceEntry, SourceGroup, ElseGroup ASC',
            is_array($srcType) ? $srcType : [$srcType],
            $srcGroup ? 'SourceGroup' : 'SourceEntry',
            $srcGroup ?: $srcEntry
        );

        foreach ($conditions as $c)
        {
            switch ($c['SourceTypeOrReferenceId'])
            {
                case CND_SRC_SPELL_CLICK_EVENT:             // 18
                case CND_SRC_VEHICLE_SPELL:                 // 21
                case CND_SRC_NPC_VENDOR:                    // 23
                    $jsGlobals[TYPE_NPC][] = $c['SourceGroup'];
                    break;
            }

            switch ($c['ConditionTypeOrReference'])
            {
                case CND_AURA:                              // 1
                    $c['ConditionValue2'] = null;           // do not use his param
                case CND_SPELL:                             // 25
                    $jsGlobals[TYPE_SPELL][] = $c['ConditionValue1'];
                    break;
                case CND_ITEM:                              // 2
                    $c['ConditionValue3'] = null;           // do not use his param
                case CND_ITEM_EQUIPPED:                     // 3
                    $jsGlobals[TYPE_ITEM][] = $c['ConditionValue1'];
                    break;
                case CND_MAPID:                             // 22 - break down to area or remap for use with g_zone_categories
                    switch ($c['ConditionValue1'])
                    {
                        case 530:                           // outland
                            $c['ConditionValue1'] = 8;
                            break;
                        case 571:                           // northrend
                            $c['ConditionValue1'] = 10;
                            break;
                        case 0:                             // old world is fine
                        case 1:
                            break;
                        default:                            // remap for area
                            $cnd = array(
                                ['mapId', (int)$c['ConditionValue1']],
                                ['parentArea', 0],          // not child zones
                                [['cuFlags', CUSTOM_EXCLUDE_FOR_LISTVIEW, '&'], 0],
                                1                           // only one result
                            );
                            $zone = new ZoneList($cnd);
                            if (!$zone->error)
                            {
                                $jsGlobals[TYPE_ZONE][] = $zone->getField('id');
                                $c['ConditionTypeOrReference'] = CND_ZONEID;
                                $c['ConditionValue1'] = $zone->getField('id');
                                break;
                            }
                            else
                                continue;
                    }
                case CND_ZONEID:                            // 4
                case CND_AREAID:                            // 23
                    $jsGlobals[TYPE_ZONE][] = $c['ConditionValue1'];
                    break;
                case CND_REPUTATION_RANK:                   // 5
                    $jsGlobals[TYPE_FACTION][] = $c['ConditionValue1'];
                    break;
                case CND_SKILL:                             // 7
                    $jsGlobals[TYPE_SKILL][] = $c['ConditionValue1'];
                    break;
                case CND_QUESTREWARDED:                     // 8
                case CND_QUESTTAKEN:                        // 9
                case CND_QUEST_NONE:                        // 14
                case CND_QUEST_COMPLETE:                    // 28
                    $jsGlobals[TYPE_QUEST][] = $c['ConditionValue1'];
                    break;
                case CND_ACTIVE_EVENT:                      // 12
                    $jsGlobals[TYPE_WORLDEVENT][] = $c['ConditionValue1'];
                    break;
                case CND_ACHIEVEMENT:                       // 17
                    $jsGlobals[TYPE_ACHIEVEMENT][] = $c['ConditionValue1'];
                    break;
                case CND_TITLE:                             // 18
                    $jsGlobals[TYPE_TITLE][] = $c['ConditionValue1'];
                    break;
                case CND_NEAR_CREATURE:                     // 29
                    $jsGlobals[TYPE_NPC][] = $c['ConditionValue1'];
                    break;
                case CND_NEAR_GAMEOBJECT:                   // 30
                    $jsGlobals[TYPE_OBJECT][] = $c['ConditionValue1'];
                    break;
                case CND_CLASS:                             // 15
                    for ($i = 0; $i < 11; $i++)
                        if ($c['ConditionValue1'] & (1 << $i))
                            $jsGlobals[TYPE_CLASS][] = $i + 1;
                    break;
                case CND_RACE:                              // 16
                    for ($i = 0; $i < 11; $i++)
                        if ($c['ConditionValue1'] & (1 << $i))
                            $jsGlobals[TYPE_RACE][] = $i + 1;
                    break;
                case CND_OBJECT_ENTRY:                      // 31
                    if ($c['ConditionValue1'] == 3)
                        $jsGlobals[TYPE_NPC][] = $c['ConditionValue2'];
                    else if ($c['ConditionValue1'] == 5)
                        $jsGlobals[TYPE_OBJECT][] = $c['ConditionValue2'];
                    break;
                case CND_TEAM:                              // 6
                    if ($c['ConditionValue1'] == 469)       // Alliance
                        $c['ConditionValue1'] = 1;
                    else if ($c['ConditionValue1'] == 67)   // Horde
                        $c['ConditionValue1'] = 2;
                    else
                        continue;
            }

            $res = [$c['NegativeCondition'] ? -$c['ConditionTypeOrReference'] : $c['ConditionTypeOrReference']];
            foreach ([1, 2, 3] as $i)
                if (($_ = $c['ConditionValue'.$i]) || $c['ConditionTypeOrReference'] = CND_DISTANCE_TO)
                    $res[] = $_;

            $group = $c['SourceEntry'];
            if (!in_array($c['SourceTypeOrReferenceId'], [CND_SRC_CREATURE_TEMPLATE_VEHICLE, CND_SRC_SPELL, CND_SRC_QUEST_ACCEPT, CND_SRC_QUEST_SHOW_MARK, CND_SRC_SPELL_PROC]))
                $group = $c['SourceEntry'] . ':' . $c['SourceGroup'];

            $result[$c['SourceTypeOrReferenceId']] [$group] [$c['ElseGroup']] [] = $res;
        }

        return [$result, $jsGlobals];
    }

    public static function sendNoCacheHeader()
    {
        header('Expires: Sat, 01 Jan 2000 01:00:00 GMT');
        header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
        header('Cache-Control: no-store, no-cache, must-revalidate');
        header('Cache-Control: post-check=0, pre-check=0', false);
        header('Pragma: no-cache');
    }

    public static function toJSON($data, $forceFlags = 0)
    {
        $flags = $forceFlags ?: (JSON_NUMERIC_CHECK | JSON_UNESCAPED_UNICODE);

        if (CFG_DEBUG && !$forceFlags)
            $flags |= JSON_PRETTY_PRINT;

        $json = json_encode($data, $flags);

        // handle strings prefixed with $ as js-variables
        // literal: match everything (lazy) between first pair of unescaped double quotes. First character must be $.
        $json = preg_replace_callback('/(?<!\\\\)"\$(.+?)(?<!\\\\)"/i', function($m) { return str_replace('\"', '"', $m[1]); }, $json);

        return $json;
    }

    public static function checkOrCreateDirectory($path)
    {
        // remove multiple slashes
        $path = preg_replace('|/+|', '/', $path);

        if (!is_dir($path) && !@mkdir($path, self::FILE_ACCESS, true))
            trigger_error('Could not create directory: '.$path, E_USER_ERROR);
        else if (!is_writable($path) && !@chmod($path, self::FILE_ACCESS))
            trigger_error('Cannot write into directory: '.$path, E_USER_ERROR);
        else
            return true;

        return false;
    }

    private static $realms = [];
    public static function getRealms()
    {
        if (DB::isConnectable(DB_AUTH) && !self::$realms)
        {
            self::$realms = DB::Auth()->select('SELECT id AS ARRAY_KEY, name, IF(timezone IN (8, 9, 10, 11, 12), "eu", "us") AS region FROM realmlist WHERE allowedSecurityLevel = 0 AND gamebuild = ?d', WOW_BUILD);
            foreach (self::$realms as $rId => $rData)
            {
                if (DB::isConnectable(DB_CHARACTERS . $rId))
                    continue;

                unset(self::$realms[$rId]);
                trigger_error('Realm #'.$rId.' ('.$rData['name'].') has no connection info set.', E_USER_NOTICE);
            }
        }

        return self::$realms;
    }

}

?>