<?php
/* by Tomasz 'Devilshakerz' Mlynski [devilshakerz.com]; Copyright (C) 2014-2015
 released under Creative Commons BY-NC-SA 4.0 license: http://creativecommons.org/licenses/by-nc-sa/4.0/ */

$plugins->add_hook('global_start', ['dvz_shoutbox', 'global_start']);   // cache shoutbox templates
$plugins->add_hook('global_end',   ['dvz_shoutbox', 'global_end']);    // catch archive page
$plugins->add_hook('xmlhttp',      ['dvz_shoutbox', 'xmlhttp']);      // xmlhttp.php listening
$plugins->add_hook('index_end',    ['dvz_shoutbox', 'load_window']); // load Shoutbox window to {$dvz_shoutbox} variable
$plugins->add_hook('chat_start',    ['dvz_shoutbox', 'load_window_xd']);
$plugins->add_hook('chat_start', 'dvz_shoutbox_stats');
$plugins->add_hook('global_start', 'dvz_shoutbox_users_on_sb');
$plugins->add_hook('admin_user_users_merge_commit', ['dvz_shoutbox', 'user_merge']);

$plugins->add_hook('fetch_wol_activity_end', ['dvz_shoutbox', 'activity']); // catch activity
$plugins->add_hook('build_friendly_wol_location_end', ['dvz_shoutbox', 'activity_translate']); // translate activity

$plugins->add_hook('misc_clearcookies', ['dvz_shoutbox', 'clearcookies']);

function dvz_shoutbox_info()
{
    return [
        'name'          => 'DVZ Shoutbox',
        'description'   => 'Lightweight AJAX chat.',
        'website'       => 'http://devilshakerz.com/',
        'author'        => 'Tomasz \'Devilshakerz\' Mlynski',
        'authorsite'    => 'http://devilshakerz.com/',
        'version'       => '2.2.1',
        'codename'      => 'dvz_shoutbox',
        'compatibility' => '18*',
    ];
}

function dvz_shoutbox_install()
{
    global $db;

    // table
    $db->write_query("
        CREATE TABLE IF NOT EXISTS `" . TABLE_PREFIX . "dvz_shoutbox` (
            `id` int(11) NOT NULL auto_increment,
            `uid` int(11) NOT NULL,
            `text` text NULL,
            `date` int(11) NOT NULL,
            `modified` int(11) NULL DEFAULT NULL,
            `ipaddress` varbinary(16) NOT NULL,
            PRIMARY KEY (`id`)
        ) ENGINE=InnoDB " . $db->build_create_table_collation() . "
    ");

    // example shout
    $db->insert_query('dvz_shoutbox', [
        'uid'       => 1,
        'text'      => 'DVZ Shoutbox!',
        'date'      => TIME_NOW,
        'ipaddress' => my_inet_pton('127.0.0.1'),
    ]);

    // settings
    $settingGroupId = $db->insert_query('settinggroups', [
        'name'        => 'dvz_shoutbox',
        'title'       => 'DVZ Shoutbox',
        'description' => 'Settings for DVZ Shoutbox.',
    ]);

    $settings = [
        [
            'name'        => 'dvz_sb_num',
            'title'       => 'Shouts to display',
            'description' => 'Number of shouts to be displayed in the Shoutbox window.',
            'optionscode' => 'numeric',
            'value'       => '20',
        ],
        [
            'name'        => 'dvz_sb_num_archive',
            'title'       => 'Shouts to display on archive',
            'description' => 'Number of shouts to be displayed per page on Archive view.',
            'optionscode' => 'numeric',
            'value'       => '20',
        ],
        [
            'name'        => 'dvz_sb_reversed',
            'title'       => 'Reversed order',
            'description' => 'Reverses the shouts display order in the Shoutbox window so that new ones appear on the bottom. You may also want to move the <b>{$panel}</b> variable below the  window in the <i>dvz_shoutbox</i> template.',
            'optionscode' => 'yesno',
            'value'       => '0',
        ],
        [
            'name'        => 'dvz_sb_height',
            'title'       => 'Shoutbox height',
            'description' => 'Height of the Shoutbox window in pixels.',
            'optionscode' => 'numeric',
            'value'       => '160',
        ],
        [
            'name'        => 'dvz_sb_dateformat',
            'title'       => 'Date format',
            'description' => 'Format of the date displayed. This format uses the PHP\'s <a href="http://php.net/manual/en/function.date.php#refsect1-function.date-parameters">date() function syntax</a>.',
            'optionscode' => 'text',
            'value'       => 'd M H:i',
        ],
        [
            'name'        => 'dvz_sb_maxlength',
            'title'       => 'Maximum message length',
            'description' => 'Set 0 to disable the limit.',
            'optionscode' => 'numeric',
            'value'       => '0',
        ],
        [
            'name'        => 'dvz_sb_mycode',
            'title'       => 'Parse MyCode',
            'description' => '',
            'optionscode' => 'yesno',
            'value'       => '1',
        ],
        [
            'name'        => 'dvz_sb_smilies',
            'title'       => 'Parse smilies',
            'description' => '',
            'optionscode' => 'yesno',
            'value'       => '1',
        ],
        [
            'name'        => 'dvz_sb_interval',
            'title'       => 'Refresh interval',
            'description' => 'Number of seconds between Shoutbox updates (lower values provide better synchronization but cause higher server load). Set 0 to disable the auto-refreshing feature.',
            'optionscode' => 'numeric',
            'value'       => '5',
        ],
        [
            'name'        => 'dvz_sb_away',
            'title'       => 'Away mode',
            'description' => 'Number of seconds after last user action (e.g. click) after which shoutbox will be minimized to prevent unnecessary usage of server resources. Set 0 to disable this feature.',
            'optionscode' => 'numeric',
            'value'       => '600',
        ],
        [
            'name'        => 'dvz_sb_antiflood',
            'title'       => 'Anti-flood interval',
            'description' => 'Forces a minimum number of seconds to last between user\'s shouts (this does not apply to Shoutbox moderators).',
            'optionscode' => 'numeric',
            'value'       => '5',
        ],
        [
            'name'        => 'dvz_sb_sync',
            'title'       => 'Moderation synchronization',
            'description' => 'Applies moderation actions without refreshing the Shoutbox window page.',
            'optionscode' => 'onoff',
            'value'       => '1',
        ],
        [
            'name'        => 'dvz_sb_lazyload',
            'title'       => 'Lazy load',
            'description' => 'Start loading data only when the Shoutbox window is actually being displayed on the screen (the page is scrolled to the Shoutbox position).',
            'optionscode' => 'select
off=Disabled
start=Check if on display to start
always=Always check if on display to refresh',
            'value'       => 'off',
        ],
        [
            'name'        => 'dvz_sb_status',
            'title'       => 'Shoutbox default status',
            'description' => 'Choose whether Shoutbox window should be expanded or collapsed by default.',
            'optionscode' => 'onoff',
            'value'       => '1',
        ],
        [
            'name'        => 'dvz_sb_minposts',
            'title'       => 'Minimum posts required to shout',
            'description' => 'Set 0 to allow everyone.',
            'optionscode' => 'numeric',
            'value'       => '0',
        ],
        [
            'name'        => 'dvz_sb_groups_view',
            'title'       => 'Group permissions: View',
            'description' => 'User groups that can view Shoutbox.',
            'optionscode' => 'groupselect',
            'value'       => '-1',
        ],
        [
            'name'        => 'dvz_sb_groups_refresh',
            'title'       => 'Group permissions: Auto-refresh',
            'description' => 'User groups that shoutbox will be refreshing for.',
            'optionscode' => 'groupselect',
            'value'       => '-1',
        ],
        [
            'name'        => 'dvz_sb_groups_shout',
            'title'       => 'Group permissions: Shout',
            'description' => 'User groups that can post shouts in Shoutbox (logged in users only).',
            'optionscode' => 'groupselect',
            'value'       => '-1',
        ],
        [
            'name'        => 'dvz_sb_groups_recall',
            'title'       => 'Group permissions: Scroll back to show past shouts',
            'description' => 'User groups that shoutbox will load previous posts when scrolling back for.',
            'optionscode' => 'groupselect',
            'value'       => '-1',
        ],
        [
            'name'        => 'dvz_sb_groups_mod',
            'title'       => 'Group permissions: Moderation',
            'description' => 'User groups that can moderate the Shoutbox (edit and delete shouts).',
            'optionscode' => 'groupselect',
            'value'       => '',
        ],
        [
            'name'        => 'dvz_sb_groups_mod_own',
            'title'       => 'Group permissions: Moderation of own shouts',
            'description' => 'Users groups whose members can edit and delete their own shouts.',
            'optionscode' => 'groupselect',
            'value'       => '',
        ],
        [
            'name'        => 'dvz_sb_supermods',
            'title'       => 'Super moderators are Shoutbox moderators',
            'description' => 'Automatically allow forum super moderators to moderate Shoutbox as well.',
            'optionscode' => 'yesno',
            'value'       => '1',
        ],
        [
            'name'        => 'dvz_sb_blocked_users',
            'title'       => 'Banned users',
            'description' => 'Comma-separated list of user IDs that are banned from posting messages.',
            'optionscode' => 'textarea',
            'value'       => '',
        ],
    ];

    $i = 1;

    foreach ($settings as &$row) {
        $row['gid']         = $settingGroupId;
        $row['title']       = $db->escape_string($row['title']);
        $row['description'] = $db->escape_string($row['description']);
        $row['disporder']   = $i++;
    }

    $db->insert_query_multiple('settings', $settings);

    rebuild_settings();

    // templates
    $templates = [
        'dvz_shoutbox_panel' => '<div class="panel">
<form>
<input type="text" class="text" placeholder="{$lang->dvz_sb_default}" maxlength="{$maxlength}" autocomplete="off" />
<input type="submit" style="display:none" />
</form>
</div>',

        'dvz_shoutbox' => '<div id="shoutbox" class="front{$classes}">

<div class="head">
<strong>{$lang->dvz_sb_shoutbox}</strong>
<p class="right"><a href="{$mybb->settings[\'bburl\']}/index.php?action=shoutbox_archive">&laquo; {$lang->dvz_sb_archivelink}</a></p>
</div>

<div class="body">

{$panel}

<div class="window" style="height:{$mybb->settings[\'dvz_sb_height\']}px">
<div class="data">
{$html}
</div>
</div>

</div>

<script type="text/javascript" src="{$mybb->settings[\'bburl\']}/jscripts/dvz_shoutbox.js"></script>
{$javascript}

</div>',
'dvz_shoutbox_xd' => '<div id="shoutbox" class="front{$classes}">

<div class="head">
<strong>{$lang->dvz_sb_shoutbox}</strong>
<p class="right"><a href="{$mybb->settings[\'bburl\']}/index.php?action=shoutbox_archive">&laquo; {$lang->dvz_sb_archivelink}</a></p>
</div>

<div class="body">

{$panel}

<div class="window" style="height:400px">
<div class="data">
{$html}
</div>
</div>

</div>

<script type="text/javascript" src="{$mybb->settings[\'bburl\']}/jscripts/dvz_shoutbox.js"></script>
{$javascript}

</div>',
        'dvz_shoutbox_archive' => '<html>
<head>
<title>{$lang->dvz_sb_archive}</title>
{$headerinclude}
</head>
<body>
{$header}

<script type="text/javascript" src="{$mybb->settings[\'bburl\']}/jscripts/dvz_shoutbox.js"></script>
{$javascript}

{$modoptions}

{$multipage}

<br />

<div id="shoutbox">

<div class="head"><strong>{$lang->dvz_sb_archive}</strong></div>

<div class="data">
{$archive}
</div>
</div>

<br />

{$multipage}

{$footer}
</body>
</html>',

        'dvz_shoutbox_archive_modoptions' => '<table border="0" cellspacing="{$theme[\'borderwidth\']}" cellpadding="{$theme[\'tablespace\']}" class="tborder">
<tr><td class="thead" colspan="2"><strong>{$lang->dvz_sb_mod}</strong></td></tr>
<tr><td class="tcat">{$lang->dvz_sb_mod_banlist}</td><td class="tcat">{$lang->dvz_sb_mod_clear}</td></tr>
<tr>
<td class="trow1">
<form action="" method="post">
<input type="text" class="textbox" style="width:80%" name="banlist" value="{$blocked_users}"></textarea>
<input type="hidden" name="postkey" value="{$mybb->post_code}" />
<input type="submit" class="button" value="{$lang->dvz_sb_mod_banlist_button}" />
</form>
</td>
<td class="trow1">
<form action="" method="post">
<select name="days">
<option value="2">2 {$lang->days}</option>
<option value="7">7 {$lang->days}</option>
<option value="30">30 {$lang->days}</option>
<option value="90">90 {$lang->days}</option>
<option value="all">* {$lang->dvz_sb_mod_clear_all} *</option>
</select>
<input type="hidden" name="postkey" value="{$mybb->post_code}" />
<input type="submit" class="button" value="{$lang->dvz_sb_mod_clear_button}" />
</form>
</td>
</tr>
</table>
<br />',
    ];

    $data = [];

    foreach ($templates as $name => $content) {
        $data[] = [
            'title'    => $name,
            'template' => $db->escape_string($content),
            'sid'      => -1,
            'version'  => 1,
            'status'   => '',
            'dateline' => TIME_NOW,
        ];
    }

    $db->insert_query_multiple('templates', $data);
}

function dvz_shoutbox_uninstall()
{
    global $db;

    $settingGroupId = $db->fetch_field(
        $db->simple_select('settinggroups', 'gid', "name='dvz_shoutbox'"),
        'gid'
    );

    // delete settings
    $db->delete_query('settinggroups', 'gid=' . $settingGroupId);
    $db->delete_query('settings', 'gid=' . $settingGroupId);

    rebuild_settings();

    // delete templates
    $db->delete_query('templates', "title IN('dvz_shoutbox', 'dvz_shoutbox_panel', 'dvz_shoutbox_archive', 'dvz_shoutbox_archive_modoptions')");

    // delete data
    $db->drop_table('dvz_shoutbox');
}

function dvz_shoutbox_is_installed()
{
    global $mybb;
    return $mybb->settings['dvz_sb_num'] !== null;
}


class dvz_shoutbox
{

    // hooks
    static function global_start()
    {
        global $mybb, $templatelist;

        if (defined('THIS_SCRIPT') && THIS_SCRIPT == 'index.php' && self::access_view()) {

            if (!empty($templatelist)) {
                $templatelist .= ',';
            }

            if ($mybb->get_input('action') == 'shoutbox_archive') {
                // archive templates

                $templatelist .= 'dvz_shoutbox_archive,multipage,multipage_page,multipage_page_current,multipage_nextpage';

                if (self::access_mod()) {
                    $templatelist .= ',dvz_shoutbox_archive_modoptions';
                }

            } else {
                // index templates
                $templatelist .= 'dvz_shoutbox,dvz_shoutbox_panel';
            }

        }
    }

    static function global_end()
    {
        global $mybb;

        if ($mybb->get_input('action') == 'shoutbox_archive' && self::access_view()) {
            return self::show_archive();
        }
    }

    static function xmlhttp()
    {
        global $mybb, $db, $charset;

        switch ($mybb->get_input('action')) {

            case 'dvz_sb_get_updates':

                $permissions = (
                    self::access_view() &&
                    self::access_refresh()
                );

                $handler = function () use ($mybb, $db) {

                    $syncConditions = $mybb->settings['dvz_sb_sync']
                        ? "OR s.modified >= " . (time() - $mybb->settings['dvz_sb_interval']) . " AND s.id BETWEEN " . abs($mybb->get_input('first', MyBB::INPUT_INT)) . " AND " . abs($mybb->get_input('last', MyBB::INPUT_INT))
                        : null
                    ;

                    $data = self::get_multiple("WHERE s.id > " . abs($mybb->get_input('last', MyBB::INPUT_INT)) . " AND s.text IS NOT NULL " . $syncConditions  . " ORDER BY s.id DESC LIMIT " . abs((int)$mybb->settings['dvz_sb_num']));

                    $html   = null; // JS-handled empty response
                    $sync   = [];
                    $lastId = 0;

                    while ($row = $db->fetch_array($data)) {

                        if ($row['id'] <= $mybb->get_input('last', MyBB::INPUT_INT)) {
                            // sync update

                            $sync[ $row['id'] ] = $row['text'] === null
                                ? null
                                : self::parse($row['text'], $row['username'])
                            ;

                        } else {
                            // new shout

                            if ($lastId == 0) {
                                $lastId = $row['id'];
                            }

                            $shout = self::render_shout($row);

                            $html = $mybb->settings['dvz_sb_reversed']
                                ? $shout . $html
                                : $html  . $shout
                            ;

                        }

                    }

                    if ($html != null || !empty($sync)) {

                        $response = [];

                        if ($html != null) {
                            $response['html'] = $html;
                            $response['last'] = $lastId;
                        }

                        if (!empty($sync)) {
                            $response['sync'] = $sync;
                        }

                        echo json_encode($response);

                    }
                };

                break;

            case 'dvz_sb_recall':

                $permissions = (
                    self::access_view() &&
                    self::access_refresh() &&
                    self::access_recall()
                );

                $handler = function () use ($mybb, $db) {

                    $data = self::get_multiple("WHERE s.id < " . abs($mybb->get_input('first', MyBB::INPUT_INT)) . " ORDER BY s.id DESC LIMIT " . abs((int)$mybb->settings['dvz_sb_num']));

                    $response = [];

                    $html = null; // JS-handled empty response
                    $firstId = 0;

                    while ($row = $db->fetch_array($data)) {

                        $firstId = $row['id'];

                        $shout = self::render_shout($row);

                        $html = $mybb->settings['dvz_sb_reversed']
                            ? $shout . $html
                            : $html  . $shout
                        ;
                    }

                    if ($html != null) {
                        $response['html'] = $html;
                    }

                    if ($db->num_rows($data) < $mybb->settings['dvz_sb_num']) {
                        $response['end'] = 1;
                    }

                    if ($response) {
                        $response['first'] = $firstId;
                    }

                    echo json_encode($response);

                };

                break;

            case 'dvz_sb_shout':

                $permissions = (
                    self::access_shout() &&
                    verify_post_check($mybb->get_input('key'), true)
                );

                $handler = function () use ($mybb) {

                    // JS-handled error (Anti-flood)
                    if (!self::antiflood_pass() && !self::access_mod()) {
                        die('A');
                    }

                    self::shout([
                        'uid'       => $mybb->user['uid'],
                        'text'      => $mybb->get_input('text'),
                        'ipaddress' => my_inet_pton(get_ip()),
                    ]);
                };

                break;

            case 'dvz_sb_get':

                $data = self::get($mybb->get_input('id', MyBB::INPUT_INT));

                $permissions = (
                    (
                        self::access_mod() ||
                        (self::access_mod_own() && $data['uid'] == $mybb->user['uid'])
                    ) &&
                    verify_post_check($mybb->get_input('key'), true)
                );

                $handler = function () use ($data) {
                    echo json_encode([
                        'text' => $data['text'],
                    ]);
                };

                break;

            case 'dvz_sb_update':

                $permissions = (
                    self::can_mod($mybb->get_input('id', MyBB::INPUT_INT)) &&
                    verify_post_check($mybb->get_input('key'), true)
                );

                $handler = function () use ($mybb) {
                    self::update($mybb->get_input('id', MyBB::INPUT_INT), $mybb->get_input('text'));
                    echo self::parse($mybb->get_input('text'), self::get_username($mybb->get_input('id', MyBB::INPUT_INT)));

                };

                break;

            case 'dvz_sb_delete':

                $permissions = (
                    self::can_mod($mybb->get_input('id', MyBB::INPUT_INT)) &&
                    verify_post_check($mybb->get_input('key'), true)
                );

                $handler = function () use ($mybb) {
                    self::delete($mybb->get_input('id', MyBB::INPUT_INT));
                };

                break;

        }

        if (isset($permissions)) {

            if ($permissions == false) {
                echo 'P'; // JS-handled error (Permissions)
            } else {

                header('Content-type: text/plain; charset=' . $charset);
                header('Cache-Control: no-store'); // force update on load
                $handler();

            }

        }
    }

    static function load_window()
    {
        global $templates, $dvz_shoutbox, $lang, $mybb, $db, $theme;

        $lang->load('dvz_shoutbox');

        // MyBB template
        $dvz_shoutbox = null;

        // dvz_shoutbox template
        $javascript   = null;
        $panel        = null;
        $classes      = null;

        if (self::access_view()) {

            if (self::is_user()) {

                // message: blocked
                if (self::is_blocked()) {
                    $panel = '<div class="panel blocked"><p>' . $lang->dvz_sb_user_blocked . '</p></div>';
                }
                // message: minimum posts
                else if (!self::access_minposts() && !self::access_mod()) {
                    $panel = '<div class="panel minposts"><p>' . str_replace('{MINPOSTS}', (int)$mybb->settings['dvz_sb_minposts'], $lang->dvz_sb_minposts) . '</p></div>';
                }
                // shout form
                else if (self::access_shout()) {
                    $maxlength = $mybb->settings['dvz_sb_maxlength'] ? (int)$mybb->settings['dvz_sb_maxlength'] : null;
                    eval('$panel = "' . $templates->get('dvz_shoutbox_panel') . '";');
                }

            }

            $js = null;

            // configuration
            $js .= 'dvz_shoutbox.interval = ' . (self::access_refresh() ? (float)$mybb->settings['dvz_sb_interval'] : 0) . ';' . PHP_EOL;
            $js .= 'dvz_shoutbox.antiflood = ' . (self::access_mod() ? 0 : (float)$mybb->settings['dvz_sb_antiflood']) . ';' . PHP_EOL;
            $js .= 'dvz_shoutbox.maxShouts = ' . (int)$mybb->settings['dvz_sb_num'] . ';' . PHP_EOL;
            $js .= 'dvz_shoutbox.awayTime = ' . (float)$mybb->settings['dvz_sb_away'] . '*1000;' . PHP_EOL;
            $js .= 'dvz_shoutbox.lang = [\'' . $lang->dvz_sb_delete_confirm . '\', \'' . str_replace('{ANTIFLOOD}', (float)$mybb->settings['dvz_sb_antiflood'], $lang->dvz_sb_antiflood) . '\', \''.$lang->dvz_sb_permissions.'\'];' . PHP_EOL;

            // reversed order
            if ($mybb->settings['dvz_sb_reversed']) {
                $js .= 'dvz_shoutbox.reversed = true;' . PHP_EOL;
                $js .= '$(\'#shoutbox .window\').scrollTop( $(\'#shoutbox .window\')[0].scrollHeight );' . PHP_EOL;
            }

            // lazyload
            if ($mybb->settings['dvz_sb_lazyload']) {
                $js .= 'dvz_shoutbox.lazyMode = \'' . (int)$mybb->settings['dvz_sb_lazyload'] . '\';' . PHP_EOL;
                $js .= '$(window).bind(\'scroll resize\', dvz_shoutbox.checkVisibility);' . PHP_EOL;
            }

            // away mode
            if ($mybb->settings['dvz_sb_away']) {
                $js .= '$(window).on(\'mousemove click dblclick keydown scroll\', dvz_shoutbox.updateActivity);' . PHP_EOL;
            }

            // shoutbox status
            $status = !isset($mybb->cookies['dvz_sb_status']) || $mybb->cookies['dvz_sb_status'] == 1;

            $js .= 'dvz_shoutbox.status = ' . (int)$status . ';' . PHP_EOL;

            if ($status == false) {
                $classes .= ' collapsed';
            }

            $html = null;
            $firstId = 0;
            $lastId = 0;

            if ($status == true) {

                // preloaded shouts
                $data = self::get_multiple("WHERE s.text IS NOT NULL ORDER BY s.id DESC LIMIT " . abs((int)$mybb->settings['dvz_sb_num']));

                while ($row = $db->fetch_array($data)) {

                    $firstId = $row['id'];

                    if ($lastId == 0) {
                        $lastId = $row['id'];
                    }

                    $shout = self::render_shout($row);

                    $html  = $mybb->settings['dvz_sb_reversed']
                        ? $shout . $html
                        : $html  . $shout
                    ;
                }

            }

            if (self::access_refresh()) {
                $js .= 'setTimeout(\'dvz_shoutbox.loop()\', ' . (float)$mybb->settings['dvz_sb_interval'] . ' * 1000);' . PHP_EOL;
            }

            if (self::access_recall()) {
                $js .= 'dvz_shoutbox.recalling = true;' . PHP_EOL;
            }

            $javascript = '
<script>
' . $js . '
dvz_shoutbox.firstId = ' . $firstId . ';
dvz_shoutbox.lastId = ' . $lastId . ';
dvz_shoutbox.appendControls();
dvz_shoutbox.updateActivity();
</script>';

            eval('$dvz_shoutbox = "' . $templates->get('dvz_shoutbox') . '";');

        }
    }

	static function load_window_xd()
    {
        global $templates, $dvz_shoutbox, $lang, $mybb, $db, $theme;

        $lang->load('dvz_shoutbox');

        // MyBB template
        $dvz_shoutbox = null;

        // dvz_shoutbox template
        $javascript   = null;
        $panel        = null;
        $classes      = null;

        if (self::access_view()) {

            if (self::is_user()) {

                // message: blocked
                if (self::is_blocked()) {
                    $panel = '<div class="panel blocked"><p>' . $lang->dvz_sb_user_blocked . '</p></div>';
                }
                // message: minimum posts
                else if (!self::access_minposts() && !self::access_mod()) {
                    $panel = '<div class="panel minposts"><p>' . str_replace('{MINPOSTS}', (int)$mybb->settings['dvz_sb_minposts'], $lang->dvz_sb_minposts) . '</p></div>';
                }
                // shout form
                else if (self::access_shout()) {
                    $maxlength = $mybb->settings['dvz_sb_maxlength'] ? (int)$mybb->settings['dvz_sb_maxlength'] : null;
                    eval('$panel = "' . $templates->get('dvz_shoutbox_panel') . '";');
                }

            }

            $js = null;

            // configuration
            $js .= 'dvz_shoutbox.interval = ' . (self::access_refresh() ? (float)$mybb->settings['dvz_sb_interval'] : 0) . ';' . PHP_EOL;
            $js .= 'dvz_shoutbox.antiflood = ' . (self::access_mod() ? 0 : (float)$mybb->settings['dvz_sb_antiflood']) . ';' . PHP_EOL;
            $js .= 'dvz_shoutbox.maxShouts = ' . (int)$mybb->settings['dvz_sb_num'] . ';' . PHP_EOL;
            $js .= 'dvz_shoutbox.awayTime = ' . (float)$mybb->settings['dvz_sb_away'] . '*1000;' . PHP_EOL;
            $js .= 'dvz_shoutbox.lang = [\'' . $lang->dvz_sb_delete_confirm . '\', \'' . str_replace('{ANTIFLOOD}', (float)$mybb->settings['dvz_sb_antiflood'], $lang->dvz_sb_antiflood) . '\', \''.$lang->dvz_sb_permissions.'\'];' . PHP_EOL;

            // reversed order
            if ($mybb->settings['dvz_sb_reversed']) {
                $js .= 'dvz_shoutbox.reversed = true;' . PHP_EOL;
                $js .= '$(\'#shoutbox .window\').scrollTop( $(\'#shoutbox .window\')[0].scrollHeight );' . PHP_EOL;
            }

            // lazyload
            if ($mybb->settings['dvz_sb_lazyload']) {
                $js .= 'dvz_shoutbox.lazyMode = \'' . (int)$mybb->settings['dvz_sb_lazyload'] . '\';' . PHP_EOL;
                $js .= '$(window).bind(\'scroll resize\', dvz_shoutbox.checkVisibility);' . PHP_EOL;
            }

            // away mode
            if ($mybb->settings['dvz_sb_away']) {
                $js .= '$(window).on(\'mousemove click dblclick keydown scroll\', dvz_shoutbox.updateActivity);' . PHP_EOL;
            }

            // shoutbox status
            $status = !isset($mybb->cookies['dvz_sb_status']) || $mybb->cookies['dvz_sb_status'] == 1;

            $js .= 'dvz_shoutbox.status = ' . (int)$status . ';' . PHP_EOL;

            if ($status == false) {
                $classes .= ' collapsed';
            }

            $html = null;
            $firstId = 0;
            $lastId = 0;

            if ($status == true) {

                // preloaded shouts
                $data = self::get_multiple("WHERE s.text IS NOT NULL ORDER BY s.id DESC LIMIT " . abs((int)$mybb->settings['dvz_sb_num']));

                while ($row = $db->fetch_array($data)) {

                    $firstId = $row['id'];

                    if ($lastId == 0) {
                        $lastId = $row['id'];
                    }

                    $shout = self::render_shout($row);

                    $html  = $mybb->settings['dvz_sb_reversed']
                        ? $shout . $html
                        : $html  . $shout
                    ;
                }

            }

            if (self::access_refresh()) {
                $js .= 'setTimeout(\'dvz_shoutbox.loop()\', ' . (float)$mybb->settings['dvz_sb_interval'] . ' * 1000);' . PHP_EOL;
            }

            if (self::access_recall()) {
                $js .= 'dvz_shoutbox.recalling = true;' . PHP_EOL;
            }

            $javascript = '
<script>
' . $js . '
dvz_shoutbox.firstId = ' . $firstId . ';
dvz_shoutbox.lastId = ' . $lastId . ';
dvz_shoutbox.appendControls();
dvz_shoutbox.updateActivity();
</script>';

            eval('$dvz_shoutbox = "' . $templates->get('dvz_shoutbox_xd') . '";');

        }
    }
	
    static function show_archive()
    {
        global $db, $mybb, $templates, $lang, $theme, $footer, $headerinclude, $header, $charset;

        $lang->load('dvz_shoutbox');

        header('Content-type: text/html; charset=' . $charset);

        add_breadcrumb($lang->dvz_sb_shoutbox, "index.php?action=shoutbox_archive");

        // moderation panel
        if (self::access_mod()) {

            if ($mybb->get_input('banlist') && verify_post_check($mybb->get_input('postkey'))) {
                self::banlist_update($mybb->get_input('banlist'));
            }

            if ($mybb->get_input('days') && verify_post_check($mybb->get_input('postkey'))) {
                if ($mybb->get_input('days') == 'all') {
                    self::clear();
                } else {
                    $allowed = [2, 7, 30, 90];
                    if (in_array($mybb->get_input('days'), $allowed)) {
                        self::clear($mybb->get_input('days'));
                    }
                }
            }

            $blocked_users = htmlspecialchars_uni($mybb->settings['dvz_sb_blocked_users']);
            eval('$modoptions = "' . $templates->get("dvz_shoutbox_archive_modoptions") . '";');

        } else {
            $modoptions = null;
        }

        // pagination
        $items   = self::count();
        $page    = abs($mybb->get_input('page', MyBB::INPUT_INT));
        $perPage = abs((int)$mybb->settings['dvz_sb_num_archive']);

        if ($perPage == 0) {
            $pages = 0;
        } else {
            $pages   = ceil($items / $perPage);
        }

        if (!$page || $page < 1 || $page > $pages) {
            $page = 1;
        }

        $start = ($page - 1) * $perPage;

        if ($items > $perPage) {
            $multipage = multipage($items, $perPage, $page, 'index.php?action=shoutbox_archive');
        }


        $data = self::get_multiple("WHERE s.text IS NOT NULL ORDER by s.id DESC LIMIT $start,$perPage");

        $archive = null;

        while ($row = $db->fetch_array($data)) {
            $archive .= self::render_shout($row, true);
        }

        $javascript = '
<script>
dvz_shoutbox.lang = [\'' . $lang->dvz_sb_delete_confirm . '\', \'' . str_replace('{ANTIFLOOD}', (float)$mybb->settings['dvz_sb_antiflood'], $lang->dvz_sb_antiflood) . '\', \'' . $lang->dvz_sb_permissions . '\'];
</script>';

        eval('$content = "' . $templates->get("dvz_shoutbox_archive") . '";');

        output_page($content);

        exit;
    }

    static function user_merge()
    {
        global $db, $source_user, $destination_user;
        return $db->update_query('dvz_shoutbox', ['uid' => $destination_user['uid']], 'uid=' . (int)$source_user['uid']);
    }

    static function activity(&$user_activity)
    {
        $location = parse_url($user_activity['location']);
        $filename = basename($location['path']);

        parse_str(html_entity_decode($location['query']), $parameters);

        if ($filename == 'index.php' && $parameters['action'] == 'shoutbox_archive') {
            $user_activity['activity'] = 'dvz_shoutbox_archive';
        }
    }

    static function activity_translate(&$data)
    {
        global $lang;

        $lang->load('dvz_shoutbox');

        if ($data['user_activity']['activity'] == 'dvz_shoutbox_archive') {
            $data['location_name'] = sprintf($lang->dvz_sb_activity, 'index.php?action=shoutbox_archive');
        }
    }

    static function clearcookies()
    {
        global $remove_cookies;
        $remove_cookies[] = 'dvz_sb_status';
    }

    // data manipulation
    static function get($id)
    {
        global $db;
        return $db->fetch_array( $db->simple_select('dvz_shoutbox', '*', 'id=' . (int)$id) );
    }

    static function get_multiple($clauses)
    {
        global $db;
        return $db->query("
            SELECT
                s.*, u.username, u.usergroup, u.displaygroup, u.avatar
            FROM
                " . TABLE_PREFIX . "dvz_shoutbox s
                LEFT JOIN " . TABLE_PREFIX . "users u ON u.uid = s.uid
            " . $clauses . "
        ");
    }

    static function get_username($id)
    {
        global $db;
        return $db->fetch_field(
            $db->query("SELECT username FROM " . TABLE_PREFIX . "users u, " . TABLE_PREFIX . "dvz_shoutbox s WHERE u.uid=s.uid AND s.id=" . (int)$id),
            'username'
        );
    }

    static function user_last_shout_time($uid)
    {
        global $db;
        return $db->fetch_field(
            $db->simple_select('dvz_shoutbox', 'date', 'uid=' . (int)$uid, [
                'order_by'  => 'date',
                'order_dir' => 'desc',
                'limit'     => 1,
            ]),
            'date'
        );
    }

    static function count()
    {
        global $db;
        return $db->fetch_field(
            $db->simple_select('dvz_shoutbox', 'COUNT(*) as n'),
            'n'
        );
    }

    static function shout($data)
    {
        global $mybb, $db;

        if ($mybb->settings['dvz_sb_maxlength'] > 0) {
            $data['text'] = mb_substr($data['text'], 0, $mybb->settings['dvz_sb_maxlength']);
        }

        foreach ($data as &$item) {
            $item = $db->escape_string($item);
        }

        $data['date'] = TIME_NOW;

        return $db->insert_query('dvz_shoutbox', $data);
    }

    static function update($id, $text)
    {
        global $db;
        return $db->update_query('dvz_shoutbox', [
            'text'     => $db->escape_string($text),
            'modified' => time(),
        ], 'id=' . (int)$id);
    }

    static function banlist_update($new)
    {
        global $db;

        $db->update_query('settings', ['value' => $db->escape_string($new)], "name='dvz_sb_blocked_users'");

        rebuild_settings();
    }

    static function delete($id)
    {
        global $mybb, $db;

        if ($mybb->settings['dvz_sb_sync']) {
            return $db->update_query('dvz_shoutbox', [
                'text'     => 'NULL',
                'modified' => time(),
            ], 'id=' . (int)$id, false, true);
        } else {
            return $db->delete_query('dvz_shoutbox', 'id=' . (int)$id);
        }
    }

    static function clear($days = false)
    {
        global $db;

        if ($days) {
            $where = 'date < ' . ( TIME_NOW - ((int)$days * 86400) );
        } else {
            $where = false;
        }

        return $db->delete_query('dvz_shoutbox', $where);
    }

    // permissions
    static function is_user()
    {
        global $mybb;
        return $mybb->user['uid'] != 0;
    }

    static function is_blocked()
    {
        global $mybb;
        return in_array($mybb->user['uid'], self::settings_get_csv('blocked_users'));
    }

    static function access_view()
    {
        $array = self::settings_get_csv('groups_view');
        return $array[0] == -1 || is_member($array);
    }

    static function access_refresh()
    {
        $array = self::settings_get_csv('groups_refresh');
        return $array[0] == -1 || is_member($array);
    }

    static function access_shout()
    {
        $array = self::settings_get_csv('groups_shout');

        return (
            self::is_user() &&
            !self::is_blocked() &&
            (
                self::access_mod() ||
                (
                    self::access_view() &&
                    self::access_minposts() &&
                    $array[0] == -1 || is_member($array)
                )
            )
        );
    }

    static function access_recall()
    {
        $array = self::settings_get_csv('groups_recall');
        return $array[0] == -1 || is_member($array);
    }

    static function access_mod()
    {
        global $mybb;

        $array = self::settings_get_csv('groups_mod');

        return (
            ($array[0] == -1 || is_member($array)) ||
            ($mybb->settings['dvz_sb_supermods'] && $mybb->usergroup['issupermod'])
        );
    }

    static function access_mod_own()
    {
        $array = self::settings_get_csv('groups_mod_own');

        return $array[0] == -1 || is_member($array);
    }

    static function access_minposts()
    {
        global $mybb;
        return $mybb->user['postnum'] >= $mybb->settings['dvz_sb_minposts'];
    }

    static function can_mod($shoutId)
    {
        global $mybb;

        if (self::access_mod()) {
            return true;
        } else if (self::access_mod_own() && self::access_shout()) {

            $data = self::get($shoutId);

            if ($data['uid'] == $mybb->user['uid']) {
                return true;
            }

        }

        return false;

    }

    // core
    static function render_shout($data, $static = false)
    {
        global $mybb;

        $id       = $data['id'];
        $text     = self::parse($data['text'], $data['username']);
        $date     = htmlspecialchars_uni(my_date($mybb->settings['dvz_sb_dateformat'], $data['date']));
        $username = htmlspecialchars_uni($data['username']);
        $user     = build_profile_link(format_name($username, $data['usergroup'], $data['displaygroup']), (int)$data['uid']);
        $avatar   = '<img src="' . (empty($data['avatar']) ? htmlspecialchars_uni($mybb->settings['useravatar']) : htmlspecialchars_uni($data['avatar'])) . '" alt="avatar" />';

        $notes      = null;
        $attributes = null;

        $own = $data['uid'] == $mybb->user['uid'];

        if ($static) {

            if (self::access_mod()) {
                $notes .= '<span class="ip">' . my_inet_ntop($data['ipaddress']) . '</span>';
            }

            if (
                self::access_mod() ||
                (self::access_mod_own() && $own)
            ) {
                $notes .= '<a href="" class="mod edit">E</a><a href="" class="mod del">X</a>';
            }

        }

        if (
            self::access_mod() ||
            (self::access_mod_own() && $own)
        ) {
            $attributes .= ' data-mod';
        }

        if ($own) {
            $attributes .= ' data-own';
        }

        return '
<div class="entry" data-id="' . $id . '" data-username="' . $username . '"' . $attributes . '>
    <div class="avatar">' . $avatar . '</div>
    <div class="user">' . $user . '</div>
    <div class="text">' . $text . '</div>
    <div class="info">' . $notes . '<span class="date">' . $date . '</span></div>
</div>';
    }

    static function parse($message, $me_username)
    {
        global $mybb;

        require_once MYBB_ROOT . 'inc/class_parser.php';

        $parser = new postParser;
        $options = [
            'allow_mycode'    => $mybb->settings['dvz_sb_mycode'],
            'allow_smilies'   => $mybb->settings['dvz_sb_smilies'],
            'allow_imgcode'   => 0,
            'filter_badwords' => 1,
            'me_username'     => $me_username,
        ];

        return $parser->parse_message($message, $options);
    }

    static function antiflood_pass()
    {
        global $mybb;
        return (
            !$mybb->settings['dvz_sb_antiflood'] ||
            ( TIME_NOW - self::user_last_shout_time($mybb->user['uid']) ) > $mybb->settings['dvz_sb_antiflood']
        );
    }

    static function settings_get_csv($name)
    {
        global $mybb;
        return array_filter( explode(',', $mybb->settings['dvz_sb_' . $name]) );
    }

}
function dvz_shoutbox_stats()
{
   global $db, $mybb, $templates, $theme, $wpisy, $users, $top_spamer, $users_online_o, $top_spamer_noformatted, $shshshs, $our_shouts, $timesearch, $shouts, $username, $user, $users_online, $anon_online, $invisiblemark, $onlinemembers, $guests_online, $spiders, $cache, $bots_online;
   
   // Użytkownicy online
   
   $timesearch = TIME_NOW - $mybb->settings['wolcutoff'];
   $comma = '';
   $query3 = $db->query("
       SELECT s.sid, s.ip, s.uid, s.time, s.location, s.location1, u.username, u.invisible, u.usergroup, u.displaygroup
       FROM ".TABLE_PREFIX."sessions s
       LEFT JOIN ".TABLE_PREFIX."users u ON (s.uid=u.uid)
       WHERE `location` LIKE '%shoutbox.php%' && s.time>'".$timesearch."'
       ORDER BY u.username ASC, s.time DESC
   ");

   $spiders = $cache->read("spiders");
   
   $users_online = 0;
   $anon_online = 0;
   $guests_online = 0;
   $bots_online = 0;
   $onlinemembers = '';
   
   while($user = $db->fetch_array($query3))
   {
       if($user['uid'] > 0)
       {
           if($user['invisible'] == 1)
           {
               ++$anon_online;
           }
           
           if($user['invisible'] != 1 || $mybb->usergroup['canviewwolinvis'] == 1 || $user['uid'] == $mybb->user['uid'])
           {
               if($user['invisible'] == 1)
               {
                   $invisiblemark = "*";
               }
               else
               {
                   $invisiblemark = '';
               }
               ++$anon_online;
               
               $username = build_profile_link(format_name($user['username'], $user['usergroup'], $user['displaygroup']), $user['uid']);
               $onlinemembers .= ''.$comma.' '.$username.''.$invisiblemark.'';
               $comma = " ,";
           }
           ++$users_online;
       }
       elseif(my_strpos($user['sid'], "bot=") !== false && $spiders[$botkey])
       {
           // The user is a search bot.
           $onlinemembers .= $comma.format_name($spiders[$botkey]['name'], $spiders[$botkey]['usergroup']);
           $comma = ", ";
           ++$bots_online;
       }
       else
       {
           // The user is a guest.
           ++$guests_online;
       }
       
       $users_online_o = $users_online + $guests_online;
   }
   // Statystyki
   
   $query = $db->query("SELECT count(id) as id FROM ".TABLE_PREFIX."dvz_shoutbox");
   
   $row = $db->fetch_array($query);
   $wpisy = $row['id'];
   
   $query3 = $db->query("SELECT d.uid, u.username, u.usergroup, u.displaygroup, u.uid, u.avatar, count(*) as shouters 
                         FROM ".TABLE_PREFIX."dvz_shoutbox d
                         LEFT JOIN ".TABLE_PREFIX."users u ON (u.uid=d.uid)
                         GROUP BY d.uid 
                         ORDER BY shouters
                         DESC LIMIT 1");
   $row3 = $db->fetch_array($query3);
   
   $shouts = $row3['shouters'];
   $top_spamer_noformatted = $row3['username'];
   $top_spamer = build_profile_link(format_name($row3['username'], $row3['usergroup'], $row3['displaygroup']), $row3['uid']);
   
   $query4 = $db->query("SELECT count(id) as id, uid FROM ".TABLE_PREFIX."dvz_shoutbox WHERE uid='".$mybb->user['uid']."'");
   
   $our_shouts = $db->fetch_field($query4, "id");
}

function dvz_shoutbox_users_on_sb()
{
   global $db, $mybb, $templates, $theme, $users_o_sb, $timesearch;
   
   $timesearch = TIME_NOW - $mybb->settings['wolcutoff'];
   $query = $db->query("SELECT count(*) as guid, time FROM ".TABLE_PREFIX."sessions WHERE `location` LIKE '%shoutbox.php%' && uid!=0 && time>".$timesearch."");
   $users_o_sb = $db->fetch_field($query, 'guid');
}