<?php

namespace bff\modules\site;

use Dev;
use tpl;
use Url;
use func;
use User;
use HTML;
use Cache;
use config;
use Module;
use tplAdmin;
use bff\view\Layout;
use bff\utils\Files;
use bff\db\Publicator;
use bff\traits\Macroable;

/**
 * @property \SiteModel $model
 */
abstract class Base extends Module implements Consts
{
    use Macroable;

    protected $securityKey = 'bc7ce37bb936e4f217b7ae2a940f5b3e';

    protected $menusRegistered = [];

    public function init()
    {
        parent::init();

        $this->module_title = _t('site', 'Settings');
    }

    /**
     * Ссылка на системную настройку
     * @param string $module
     * @param string|array $opts
     * @param string $template
     * @return string
     */
    public function settingsSystemLink($module, $opts = [], $template = '')
    {
        if (is_string($opts)) {
            $opts = ['sett' => $opts];
        }
        func::array_defaults($opts, [
            'tab'  => 'def',
            'sett' => '',
            'e'    => true,
            'local' => false,
            'local-attr' => [],
        ]);
        $hash = '#' . strval($opts['tab']);
        if (! empty($opts['sett'])) {
            $hash .= ':' . $opts['sett'];
        }
        if (!empty($opts['local'])) {
            HTML::attributeAdd($opts['local-attr'], 'class', 'j-local-link');
            return HTML::attributes(array_merge($opts['local-attr'], [
                'href' => HTML::escape($hash, $opts['e']),
                'data-module' => strval($module),
            ]));
        }
        $link = tpl::adminLink('settingsSystemManager&tab=' . strval($module) . $hash, 'site', $opts['e']);
        if (!empty($template) && is_string($template)) {
            switch ($template) {
                case 'disabled': {
                    $link = _t('site', 'This function is disabled in the <a [setting_link]>System Settings</a> and is not displayed to site users.', [
                        'setting_link' => 'href="' . $link . '"',
                    ]);
                } break;
            }
        }
        return $link;
    }

    /**
     * Форма редактирования системных настроек модуля
     * @param Module $module объект модуля
     * @param array $settings настройки
     * @param array $options @ref доп. настройки
     * @return string|array
     */
    public function settingsSystemForm(Module $module, array $settings, array &$options = [])
    {
        if (empty($settings) && empty($options['tabs'])) {
            return '';
        }

        # дополнительные настройки + фильтры (хуки)
        if (empty($options['extra'])) {
            $options['extra'] = [];
        }
        $options['extra'] = $this->app->filter('site.settings.system.extra.' . $module->module_name, $options['extra'], $module);
        if (!empty($options['extra']) && is_array($options['extra'])) {
            foreach ($options['extra'] as $k => $v) {
                if (!empty($k) && is_array($v) && isset($v['type']) && isset($v['default'])) {
                    $settings[$k] = $v;
                }
            }
        }

        # табы
        $tabs = (!empty($options['tabs']) && is_array($options['tabs']) ? $options['tabs'] : []);
        if (! empty($settings)) {
            $tabs['def'] = $this->defaults($tabs['def'] ?? [], ['t' => _t('', 'General'), 'p' => 0]);
        }

        $theme = $this->app->theme();
        if (!empty($options['dataOnly'])) {
            $data = [];
            foreach ($settings as $key => &$v) {
                if (empty($v['type']) || $v['type'] === TYPE_PASS || !isset($v['default'])) {
                    continue;
                }
                if ($theme !== false && $theme->configExists($key)) {
                    $data[$key] = $theme->config($key, $v['default']);
                    continue;
                }
                $data[$key] = $this->config($key, $v['default'], $v['type']);
            } unset($v);
            $options['data'] = $data;
            return '';
        }

        $fordev = false;
        foreach ($settings as $k => &$v) {
            if (! empty($v['fordev'])) {
                if (! $this->isAdminFordev()) {
                    unset($settings[$k]);
                    continue;
                }
                if (! $fordev) {
                    $fordev = true; # добавляем таб "Разработчику"
                    $tabs['fordev'] = ['t' => '<i class="icon icon-wrench"></i>', 'p' => 1000];
                }
                $v['tab'] = 'fordev';
            }
            if (!isset($v['tab']) || empty($v['tab']) || !isset($tabs[$v['tab']])) {
                # таб по умолчанию
                $v['tab'] = 'def';
            }
        } unset($v);
        # сортируем табы в порядке priority
        if (sizeof($tabs) > 1) {
            $priorityOrder = [];
            $i = 1;
            foreach ($tabs as $k => $v) {
                $priorityOrder[$k] = $v['p'] ?? $i;
                $i++;
            }
            array_multisort($priorityOrder, SORT_ASC, $tabs);
        }

        $data = [
            'module'   => $module,
            'settings' => &$settings,
            'options'  => &$options,
            'tabs'     => &$tabs,
            'theme'    => $theme,
        ];
        return $this->template('admin/settings.sys.form', $data, [
            'path' => $this->module_dir_tpl_core,
        ]);
    }

    /**
     * Получение данных, для формирования системных настроек
     * @param array $opts
     * @return array
     */
    public function settingsSystemManagerData($opts = [])
    {
        $data = ['tabs' => []];
        $modulesList = $this->app->getModulesList();
        foreach (['test'] as $v) {
            if (isset($modulesList[$v])) {
                unset($modulesList[$v]);
            }
        }

        $indexes = [];
        $uniques = function ($name) use (&$indexes) {
            if (! isset($indexes[$name])) {
                $indexes[$name] = 0;
                return $name;
            }
            $indexes[$name]++;
            return $name . $indexes[$name];
        };

        $tabsMethod = 'settingsSystemTabs';
        $defaultCallMethod = 'settingsSystem';
        $i = 30;
        foreach ($modulesList as $moduleName => $moduleParams) {
            $module = $this->app->module($moduleName);
            $callMethods = [];
            if (method_exists($module, $tabsMethod)) {
                $callMethods = call_user_func([$module, $tabsMethod]);
            }
            if (empty($callMethods) || ! is_array($callMethods)) {
                $callMethods = [$moduleName => $defaultCallMethod];
            }
            foreach ($callMethods as $tabName => $method) {
                if (!  method_exists($module, $method)) {
                    continue;
                }
                $options = $opts;
                $options['name'] = $tabName;
                $form = $module->$method($options);

                $name = $uniques($options['name'] ?? $tabName);
                $data['tabs'][$name] = [
                    'name' => $name,
                    'title' => (!empty($options['title']) ? $options['title'] : $module->module_title),
                    'form' => $form,
                    'module' => $moduleName,
                    'priority' => (!empty($options['priority']) ? $options['priority'] : $i++),
                    'data' => $options['data'] ?? [],
                    'formTabs' => $options['tabs'] ?? [],
                ];
            }
        }

        return $data;
    }

    /**
     * Получение всех системных настроек и их значений
     * @return array
     */
    public function settingsSystemData()
    {
        $data = $this->settingsSystemManagerData(['dataOnly' => true]);

        $forms = [];
        $result = [];
        foreach ($data['tabs'] as $k => $v) {
            if (! empty($v['data'])) {
                $result = array_merge($result, $v['data']);
            }
            if (! empty($v['formTabs'])) {
                foreach ($v['formTabs'] as $vv) {
                    if (! empty($vv['form'])) {
                        $forms[] = ['m' => $v['module'], 'f' => $vv['form']];
                    }
                }
            }
        }

        foreach ($forms as $v) {
            $module = $this->app->module($v['m']);
            $form = tplAdmin::settingsForm($module, 'admin/settings.' . $v['f'] . '.form', ['action' => 'settingsSystemAjaxForm']);
            $data = $form->settingsSystemData();
            if (! empty($data)) {
                $result = array_merge($result, $data);
            }
        }

        return $result;
    }

    /**
     * Системные настройки: настройки системы
     * @param array $extend @ref
     * @param string $tab
     */
    public function settingsSystemSystem(&$extend = [], $tab = 'system')
    {
        if (! isset($extend['settings'])) {
            $extend['settings'] = [];
        }

        $languagesList = $this->locale->getLanguages(false);
        if (sizeof($languagesList) >= 1) {
            $extend['settings']['locale.accepted.languages'] = [
                'title' => _t('site', 'Language auto-detection'),
                'type' => TYPE_BOOL,
                'input' => 'select',
                'default' => true,
                'options' => [
                    true => ['title' => _t('', 'Enabled'), 'description' => _t('site', 'Autodetect localization when the user first visits the site')],
                    false => ['title' => _t('', 'Disabled')],
                ],
                'tab' => $tab,
            ];
        }

        $extend['settings']['date.timezone'] = [
            'title' => _t('site', 'Time Zone'),
            'type' => TYPE_STR,
            'input' => 'select',
            'default' => 'Europe/Kiev',
            'options' => function () {
                $list = timezone_identifiers_list();
                $options = [];
                foreach ($list as $v) {
                    $options[$v] = ['title' => $v];
                }
                return $options;
            },
            'tab' => $tab,
        ];

        if ($this->app->request()->scheme(true) == 'https' || $this->config('https.only')) {
            $extend['settings']['https.only'] = [
                'title' => _t('site', 'HTTPS Mode'),
                'children' => ['https.redirect'],
                'type' => TYPE_BOOL,
                'input' => 'select',
                'default' => false,
                'options' => [
                    true => ['title' => _t('', 'Enabled')],
                    false => ['title' => _t('', 'Disabled')],
                ],
                'tab' => $tab,
            ];

            $extend['settings']['https.redirect'] = [
                'title' => _t('site', 'HTTP Redirect'),
                'title-tip' => _t('site', 'Redirect from the HTTP version of the site to HTTPS'),
                'parent' => ['id' => 'https.only', 'value' => true],
                'type' => TYPE_BOOL,
                'input' => 'select',
                'default' => false,
                'options' => [
                    true => ['title' => _t('', 'Enabled')],
                    false => ['title' => _t('', 'Disabled')],
                ],
                'tab' => $tab,
            ];
        }

        $statisticURL = ''; # todo: mp3 docs
        if (BFF_PRODUCT === 'do') {
            $statisticURL = 'https://tamaranga.com/docs/doska/site-system-settings-28-189.html#p2';
        } elseif (BFF_PRODUCT === 'freelance') {
            $statisticURL = 'https://tamaranga.com/docs/freelance/settings-system-manager-55-269.html#p2';
        } elseif (BFF_PRODUCT === 'city') {
            $statisticURL = 'https://tamaranga.com/docs/portal/site-system-settings-75-287.html#p2';
        }
        if (! empty($statisticURL)) {
            $extend['settings']['hh.stat.allowed'] = [
                'title' => _t('site', 'System operation statistics'),
                'type' => TYPE_BOOL,
                'input' => 'select',
                'default' => true,
                'options' => [
                    true => ['title' => _t('', 'Enabled'),
                        'description' => _t('site', 'Allow collection and subsequent analysis [a]of system performance statistics[/a]', [
                            'a' => '<a href="' . $statisticURL . '" rel="nofollow" target="_blank">',
                            '/a' => '</a>',
                        ]),
                    ],
                    false => ['title' => _t('', 'Disabled')],
                ],
                'tab' => $tab,
                'onchange' => 'site/changeStatAllowed/',
            ];
        }

        if ($this->isAdminFordev()) {
            $size = config::get('site.cache.size', '{}');
            $size = json_decode($size, true);
            $size = ! empty($size) && isset($size['size']) ? tpl::filesize($size['size']) : tpl::filesize(0);

            $resetScript = '<script type="text/javascript">var jSiteStaticReset = function () { return { reset:function () {
                        bff.ajax(\'' . Url::admin('site/ajaxBase/static-reset-cache', [], 'js') . '\', {}, function (data) {
                            if (data && data.success) {
                                bff.success(data.msg);
                            }
                        });
                    }
                }}();</script>';

            $extend['settings']['site.cache.reset'] = [
                'title' => _t('site', 'Site Cache'),
                'input' => 'html',
                'content' => $size . ' <input type="button" class="btn btn-mini" value="' . _t('site', 'Reset') . '" onclick="jSiteStaticReset.reset();" style="margin-left:10px;"/>' . $resetScript,
                'tab' => $tab,
            ];
        }
    }

    /**
     * Системные настройки: локализация
     * @param array $extend @ref
     * @param string $tab
     */
    public function settingsSystemLocale(&$extend = [], $tab = 'locale')
    {
        if (! isset($extend['settings'])) {
            $extend['settings'] = [];
        }

        $languagesList = $this->locale->getLanguages(false);
        if (sizeof($languagesList) >= 1) {
            $extend['settings']['locale.accepted.languages'] = [
                'title' => _t('site', 'Language auto-detection'),
                'type' => TYPE_BOOL,
                'input' => 'select',
                'default' => true,
                'options' => [
                    true => [
                        'title' => _t('', 'Enabled'),
                        'description' => _t('site', 'Autodetect localization when the user first visits the site'),
                    ],
                    false => ['title' => _t('', 'Disabled')],
                ],
                'tab' => $tab,
            ];
        }
    }

    /**
     * Get counters & code to view
     * @param int|null $position
     * @return array
     */
    public function countersAndCode(?int $position = null)
    {
        return $this->app->filter('site.counters.view', $this->model->countersView($position), $position);
    }

    /**
     * Add site counters to layout
     * @param Layout $layout
     * @param array|null $counters
     * @return void
     */
    public function countersToLayout(Layout $layout, ?array $counters = null)
    {
        $counters = $counters ?? $this->model->countersViewByPosition();
        if (empty($counters)) {
            return;
        }

        if (! empty($counters[static::COUNTERS_POS_HEAD])) {
            $layout->afterHead(function () use (&$counters) {
                $code = '';
                foreach ($counters[static::COUNTERS_POS_HEAD] as $data) {
                    $code .= $data['code'];
                }
                return $code;
            });
        }

        if (! empty($counters[static::COUNTERS_POS_BODY_START])) {
            $layout->beforeBody(function () use (&$counters) {
                $code = '';
                foreach ($counters[static::COUNTERS_POS_BODY_START] as $data) {
                    $code .= $data['code'];
                }
                return $code;
            });
        }

        if (! empty($counters[static::COUNTERS_POS_BODY_FINISH])) {
            $layout->afterBody(function () use (&$counters) {
                $code = '';
                foreach ($counters[static::COUNTERS_POS_BODY_FINISH] as $data) {
                    $code .= $data['code'];
                }
                return $code;
            });
        }
    }

    /**
     * Получаем данные об основной валюте
     * @deprecated use {@see Currency::default()}
     * @param string|bool $valueKey ключ требуемых данных, false - все данные
     * @return mixed
     */
    public function currencyDefault($valueKey = 'title_short')
    {
        if ($valueKey == 'id') {
            return $this->config('currency.default', 1, TYPE_UINT);
        }

        return $this->currencyData(0, $valueKey);
    }

    /**
     * Получаем данные о необходимой валюте
     * @deprecated use {@see Currency::data()}
     * @param int $currencyID ID валюты, если 0 - возвращаем данные об основной валюте
     * @param string|bool $valueKey ключ требуемых данных, false - все данные
     * @param bool $enabledOnly только включенные валюты
     * @return mixed
     */
    public function currencyData($currencyID = 0, $valueKey = false, $enabledOnly = true)
    {
        $data = $this->model->currencyData(false, false, $enabledOnly);
        if (empty($currencyID)) {
            $currencyID = $this->currencyDefault('id');
        }
        if (!isset($data[$currencyID])) {
            return false;
        }

        return ($valueKey !== false && isset($data[$currencyID][$valueKey]) ?
            $data[$currencyID][$valueKey] :
            $data[$currencyID]
        );
    }

    /**
     * Инициализация компонента Publicator для статических страниц
     * @return \bff\db\Publicator
     */
    public function pagesPublicator()
    {
        $aSettings = [
            'title'           => false,
            'langs'           => $this->locale->getLanguages(),
            'images_path'     => $this->app->path('pages', 'images'),
            'images_path_tmp' => $this->app->path('tmp', 'images'),
            'images_url'      => $this->app->url('pages', 'images'),
            'images_url_tmp'  => $this->app->url('tmp', 'images'),
            'photo_sz_view'   => ['width' => 960],
            'images_original' => true,
            // gallery
            'gallery_sz_view' => [
                'width'    => 960, 'height' => false,
                'vertical' => ['width' => false, 'height' => 640],
                'quality'  => 95,
                'sharp'    => []
            ], // no sharp
        ];

        if ($this->pagesPublicatorEnabled()) {
            $configSettings = $this->config('pages.publicator.settings', []);
            if (!empty($configSettings) && is_array($configSettings)) {
                $aSettings = array_merge($aSettings, $configSettings);
            }
        }

        return $this->attachComponent('publicator', new Publicator($this->module_name, $aSettings));
    }

    /**
     * Использовать Publicator для статических страниц
     * @return bool|int
     */
    public function pagesPublicatorEnabled()
    {
        return $this->config('pages.publicator', false); # bool или int
    }

    /**
     * Расширения для статических страниц
     * @return string
     */
    public function pagesUrlExtension()
    {
        return $this->config('pages.extension', '.html');
    }

    /**
     * Защита от спама (частой отправки сообщений / выполнения действий)
     * @param string $key ключ выполняемого действия
     * @param int $timeout допустимая частота выполнения действия, в секундах
     * @param bool $setError устанавливать ошибку
     * @param array $opts
     * @return bool true - частота отправки превышает допустимый лимит, false - все ок
     */
    public function preventSpam($key, $timeout = 20, $setError = true, array $opts = [])
    {
        if ($this->app->hooksAdded('site.prevent.spam')) {
            $hook = $this->app->filter('site.prevent.spam', [
                'key'       => &$key,
                'timeout'   => &$timeout,
                'setError'  => &$setError,
                'opts'      => &$opts,
            ]);
            if (isset($hook['result'])) {
                return $hook['result'];
            }
        } elseif ($this->app->isTest()) {
            return false;
        }

        $timeout = intval($timeout);
        if ($timeout <= 0) {
            return false;
        }

        $userID = $opts['userId'] ?? User::id();
        $ipAddress = $opts['ip'] ?? $this->request->remoteAddress();

        $last = $this->model->requestGet($key, $userID, $ipAddress, false);
        if ($last > 0 && ((BFF_NOW - $last) < $timeout)) {
            if ($setError) {
                if ($timeout <= 70) {
                    $this->errors->set(_t('', 'Please try again in one minute'));
                } else {
                    $this->errors->set(_t('', 'Please try again in a few minutes'));
                }
            }
            return true;
        } else {
            $this->model->requestSet($key, $userID, $ipAddress);
        }

        return false;
    }

    /**
     * Защита от спама на основе допустимого кол-ва повторов выполненного действия
     * В случае привышения этого кол-ва включаем режим ожидание ($timeout)
     * @param string $key ключ выполняемого действия
     * @param int $limit допустимое кол-во повторов
     * @param int $timeout таймаут ожидания (cooldown) при достижении лимита попыток, в секундах
     * @param bool $setError устанавливать ошибку
     * @param array $opts
     * @return bool true - достигнут лимит повторов, false - все ок
     */
    public function preventSpamCounter($key, $limit, $timeout = 20, $setError = true, array $opts = [])
    {
        if ($this->app->hooksAdded('site.prevent.spam.counter')) {
            $hook = $this->app->filter('site.prevent.spam.counter', [
                'key'       => &$key,
                'limit'     => &$limit,
                'timeout'   => &$timeout,
                'setError'  => &$setError,
                'opts'      => &$opts,
            ]);
            if (isset($hook['result'])) {
                return $hook['result'];
            }
        } elseif ($this->app->isTest()) {
            return false;
        }

        $limit = intval($limit);
        $timeout = intval($timeout);
        if ($limit <= 0 || $timeout <= 0) {
            return false;
        }

        $userID = $opts['userId'] ?? User::id();
        $ipAddress = $opts['ip'] ?? $this->request->remoteAddress();

        $last = $this->model->requestGet($key, $userID, $ipAddress, true);

        # первое выполнение действия
        if (empty($last)) {
            $this->model->requestSet($key, $userID, $ipAddress, 1);
            return false;
        }

        $filter = ['user_action' => $key];
        if ($userID) {
            $filter['user_id'] = $userID;
        } else {
            $filter['user_ip'] = $ipAddress;
        }
        $counter = intval($last['counter']);
        if ($counter < $limit) {
            # повтор: лимит не достигнут
            $this->model->requestUpdate($filter, [
                'counter' => $counter + 1,
                'created' => $this->db->now(),
            ]);
            return false;
        } elseif ($counter === $limit) {
            # повтор: лимит достигнут
            # пропускаем + помечаем период ожидания для последующих попыток
            $this->model->requestUpdate($filter, [
                'counter' => $counter + 1,
                'created' => date('Y-m-d H:i:s', strtotime('+ ' . $timeout . ' seconds')),
            ]);
            return false;
        } else {
            # период ожидания: просим подождать
            if (strtotime($last['created']) > BFF_NOW) {
                if ($setError) {
                    if ($timeout <= 70) {
                        $this->errors->set(_t('', 'Please try again in one minute'));
                    } else {
                        $this->errors->set(_t('', 'Please try again in a few minutes'));
                    }
                }
                return true;
            } else {
                # завершаем период ожидания, сбрасываем счетчик попыток
                $this->model->requestUpdate($filter, [
                    'counter' => 1,
                    'created' => $this->db->now(),
                ]);
                return false;
            }
        }
    }

    /**
     * Формирование URL для работы с сайтом в выключенном режиме
     * @param bool $secretOnly только ключ
     * @return string
     */
    public function offlineUrl($secretOnly = false)
    {
        $secret = hash('sha256', $this->config('crypt.key', '') . $this->config('site.title'));
        if ($secretOnly) {
            return $secret;
        }

        return $this->router->url('index', ['offline' => $secret]);
    }

    /**
     * Обработка копирования данных локализации
     * @param string $from ключ языка
     * @param string $to ключ языка
     */
    public function onLocaleDataCopy($from, $to)
    {
        # настройки сайта
        $configUpdate = [];
        $fromPostfixLen = mb_strlen('_' . $from);
        foreach (config::all() as $k => $v) {
            if (mb_strrpos($k, '_' . $from) === mb_strlen($k) - $fromPostfixLen) {
                $configUpdate[mb_substr($k, 0, -$fromPostfixLen) . '_' . $to] = $v;
            }
        }
        config::save($configUpdate);
    }

    /**
     * Формирование списка директорий/файлов требующих проверки на наличие прав записи
     * @return array
     */
    public function writableCheck()
    {
        $dirs = [
            $this->app->path('tmp', 'images') => 'dir-only', # временная директория загрузки изображений
            $this->app->path('images')        => 'dir-only', # /public_html/files/images/
        ];
        $tmp1 = ini_get('upload_tmp_dir');
        if (!empty($tmp1)) {
            $dirs[$tmp1] = ['type' => 'dir-only', 'title' => _t('site', 'temporary files directory during upload')]; # временная директория загрузки файлов
        }
        $tmp2 = sys_get_temp_dir();
        if (!empty($tmp2) && $tmp1 !== $tmp2) {
            $dirs[$tmp2] = ['type' => 'dir-only', 'title' => _t('site', 'temporary files directory')]; # директория tmp файлов
        }
        if ($this->pagesPublicatorEnabled()) {
            $dirs[$this->app->path('pages', 'images')] = 'dir-only'; # статические страницы: публикатор
        }
        # файлы локализации
        $dirs[$this->locale->gettextDomain('path')] = 'file'; # domain.php
        foreach ($this->locale->getLanguages(true) as $lng) {
            $dirs[$this->locale->gettextPath($lng)] = 'dir-only'; # файлы переводов
        }
        # минимизация статики: js, css
        $dirs[$this->app->path('min')] = ['type' => 'dir+files', 'title' => _t('site', 'Directory for minified js/css')];
        # плагины:
        $dirs[$this->app->pluginsPath()] = ['type' => 'dir-only'];
        $dirs[$this->app->publicPath('plugins')] = ['type' => 'dir-only'];
        # темы:
        $dirs[$this->app->themesPath()] = ['type' => 'dir-only'];
        $dirs[$this->app->publicPath('themes')] = ['type' => 'dir-only'];
        # custom
        $dirs[$this->app->publicPath('custom')] = ['type' => 'dir-only'];
        # расширения: настройки + изображения
        $dirs[$this->app->path('extensions', 'images')] = 'dir-only';
        # расширения: файлы
        $dirs[$this->app->path('extensions')] = 'dir-only';
        $dirs[$this->app->basePath('files/extensions')] = 'dir-only';
        # vendor
        $dirs[$this->app->basePath('vendor')] = 'dir-only';

        return array_merge(parent::writableCheck(), $dirs);
    }

    /**
     * Очистка директорий временных файлов
     * @param array $dirs полные путь директорий временных файлов
     * @param int $days кол-во дней от момента загрузки файлов, спустя которые их необходимо удалять
     */
    public function temporaryDirsCleanup(array $dirs, $days = 3)
    {
        $days = ($days < 1 ? 1 : intval($days)) * 86400;
        $time = time();

        foreach ($dirs as $v) {
            $files = Files::getFiles($v);
            foreach ($files as $f) {
                if ((filectime($f) + $days) < $time) {
                    @unlink($f);
                }
            }
        }
    }

    /**
     * Favicon
     * @param array $options доп. параметры
     * @return string
     */
    public function favicon(array $options = []): string
    {
        $list = $this->app->filter('site.favicon.list', [
            'ico' => ['rel' => 'icon', 'href' => $this->app->url('/favicon.ico'), 'type' => 'image/x-icon'],
        ]);
        $html = '';
        if (!empty($list)) {
            foreach ($list as $v) {
                if (!empty($v['href'])) {
                    $html .= '<link' . HTML::attributes($v) . ' />';
                }
            }
        }
        return $html;
    }

    /**
     * Название сайта
     * Фильтр: "site.title.{language}"
     * @param string $position позиция вывода заголовка (не указана - '')
     * @param string $language ключ языка заголовка (не указан - текущий)
     * @param string $default заголовок по-умолчанию (не указан - SITEHOST)
     * @return string
     */
    public function title($position = '', $language = '', $default = SITEHOST): string
    {
        if (empty($language)) {
            $language = $this->locale->getCurrentLanguage();
        }
        $result = $this->config('site.title', $default);
        switch ($position) {
            case 'seo.template.macros': {
                $result = $this->config('site.title.seo', [], TYPE_ARRAY)[$language] ?? $default;
            } break;
            case 'sendmail.template.macros': {
                $result = $this->config('site.title.sendmail', [], TYPE_ARRAY)[$language] ?? $default;
            } break;
        }

        return (string)$this->app->filter('site.title', $result, $position, $language, $default);
    }

    /**
     * Заголовок сайта в шапке
     * Фильтр: "site.title.header.{language}", "site.title.header.admin.{language}"
     * @param string $position позиция вывода заголовка (не указана - '')
     * @param bool|null $adminPanel для админ. панели (null - определять по контексту)
     * @param string|null $language ключ языка заголовка (null - текущий)
     * @param string $default заголовок по-умолчанию
     * @return string
     */
    public function titleHeader($position = 'header', $adminPanel = null, $language = null, $default = '')
    {
        if (is_null($adminPanel)) {
            $adminPanel = $this->isAdminPanel();
        }
        if (empty($language)) {
            $language = $this->locale->current();
        }
        if ($adminPanel) {
            return (string)$this->app->filter('site.title.header.admin', $this->config('site.title.header.admin', [], TYPE_ARRAY)[$language] ?? $default, $position, $adminPanel, $language, $default);
        } else {
            return (string)$this->app->filter('site.title.header', $this->config('site.title.header', [], TYPE_ARRAY)[$language] ?? $default, $position, $adminPanel, $language, $default);
        }
    }

    /**
     * Формирование текста копирайта
     * @param array $options доп. параметры
     * @return string
     */
    public function copyright(array $options = [])
    {
        if (empty($options['lng'])) {
            $options['lng'] = $this->locale->current();
        }
        return strtr($this->app->filter('site.copyright.text', $this->config('site.copyright.text', [], TYPE_ARRAY)[ $options['lng'] ] ?? '', $options), [
            '{year}' => date('Y'),
        ]);
    }

    /**
     * Список доступных языков сайта для переключения
     * @param bool $adminPanel для вывода в админ. панели
     * @param array $options доп. параметры
     * @return array
     */
    public function languagesList($adminPanel = false, array $options = [])
    {
        $exclude = (!$adminPanel ? $this->locale->getHiddenLocalesList() : []);
        $list = $this->app->filter('site.languages.list', $this->locale->getLanguages(false, $exclude), $options);
        if (is_array($list)) {
            func::sortByPriority($list);
        }
        return $list;
    }

    /**
     * Переключатель языка
     * @param array $options доп.параметры
     * @param string|null $currentLanguage
     * @return string HTML
     */
    public function languagesSwitcher(array $options = [], ?string $currentLanguage = null)
    {
        static $i = 1;
        $data = [];
        $data['prefix'] = 'language-' . ($i++);
        $data['options'] = $options;
        $data['lang'] = $currentLanguage ?? $this->locale->current();
        $data['languages'] = $this->languagesList();
        foreach ($data['languages'] as $k => &$v) {
            $v['active'] = ($k == $data['lang']);
            $v['url'] = $this->app->urlLocaleChange($k);
        } unset($v);
        $data['template'] = (!empty($options['template']) ? $options['template'] : 'languages');
        $data = $this->app->filter('site.languages.switcher', $data, $options);
        return $this->view->template($data['template'], $data);
    }

    /**
     * Menu to render (current theme & language)
     * @param string $id
     * @param string|null $template
     * @param bool $force
     * @return \bff\view\Menu
     */
    public function menu(string $id, ?string $template = null, bool $force = false)
    {
        if (! array_key_exists($id, $this->menusRegistered) || $force) {
            $theme = $this->app->theme();
            if (empty($this->menusRegistered)) {
                $this->menusRegister($theme);
            }
            $menu = $theme->menu($id);
            $settings = $this->menuSettings($id);
            foreach ($settings as $k => $v) {
                if (empty($v['is_system'])) {
                    continue;
                }
                if ($menu->get($k) === null) {
                    unset($settings[$k]);
                }
            }
            $menu->extend($settings);

            $this->app->hook('site.menu.' . $id, $menu);
            $this->menusRegistered[$id] = $menu;
        } else {
            $menu = $this->menusRegistered[$id];
        }

        if ($template) {
            $menu->setTemplate($template);
        }

        return $menu;
    }

    /**
     * Register menus in modules & extensions
     * @param \Theme $theme
     * @return void
     */
    protected function menusRegister($theme)
    {
        # Modules
        foreach ($this->app->getModulesList() as $module) {
            if ($file = $this->view->resolveFileInPath('menu.php', $module['path'])) {
                require $file;
            }
        }

        # Plugins & Addons
        foreach (Dev::getPluginsList() as $plugin) {
            if (! $plugin->isActive()) {
                continue;
            }
            if ($file = $this->view->resolveFileInPath('menu.php', $plugin->module_dir)) {
                require $file;
            } else {
                $plugin->menu($theme);
            }
        }
    }

    /**
     * Menu admin settings
     * @param string $id
     * @param string|null $lang
     * @return \bff\view\MenuItem[]
     */
    protected function menuSettings(string $id, ?string $lang = null)
    {
        $lang = $lang ?? $this->locale->current();

        $settings = Cache::rememberForever('site:menu:' . $id . ':' . $lang, function () use ($id, $lang) {
            $records = $this->model->menuListing(
                ['group_key' => $id],
                ['orderBy' => 'num', 'lang' => $lang]
            );

            $settings = [];
            foreach ($records as $item) {
                # System created items (modules/extensions)
                if ($item['is_system']) {
                    $settings[$item['item_key']] = $item;
                    continue;
                }
                # Admin created items
                do {
                    if ($item['type'] != static::MENU_TYPE_ITEM) {
                        break;
                    }
                    if (! empty($item['pid'])) {
                        break;
                    }
                    if (empty($item['title'])) {
                        break;
                    }
                    if (empty($item['url'])) {
                        break;
                    }
                    $data = [];
                    foreach (['title', 'target', 'url', 'style', 'icon', 'num', 'enabled'] as $key) {
                        $data[$key] = $item[$key];
                    }
                    $settings[$item['id']] = $data;
                } while (false);
            }

            return $settings;
        });

        # Macros
        # currenty available for admin items only
        foreach ($settings as $key => $item) {
            if (empty($item['is_system'])) {
                $settings[$key]['url'] = $this->menuMacrosReplace($item['url'], $lang);
            }
        }

        return $settings;
    }

    /**
     * Reset all menus cache
     */
    public function menusResetCache()
    {
        $theme = $this->app->theme();

        $this->menusRegister($theme);

        $languages = $this->locale->getLanguages();
        foreach ($theme->menus() as $menu) {
            foreach ($languages as $lang) {
                Cache::delete('site:menu:' . $menu->id() . ':' . $lang);
            }
        }
    }

    /**
     * Замена макросов меню в строке
     * @param string $string
     * @param string|null $lang
     * @return string
     */
    protected function menuMacrosReplace($string, ?string $lang = null)
    {
        return strtr($string, [
            static::MENU_MACROS_SITEURL  => $this->getMenuMacrosReplacement(static::MENU_MACROS_SITEURL, $lang),
            Url::HOST_PLACEHOLDER => $this->getMenuMacrosReplacement(Url::HOST_PLACEHOLDER, $lang),
        ]);
    }

    /**
     * Получаем замену макроса меню по его ключу
     * @param string $key ключ макроса
     * @param string|null $lang ключ языка
     * @return string
     */
    protected function getMenuMacrosReplacement($key, ?string $lang = null)
    {
        switch ($key) {
            case static::MENU_MACROS_SITEURL:
                return SITEURL;
            case Url::HOST_PLACEHOLDER:
                $lang = $lang ?? $this->locale->current();
                return SITEHOST . $this->locale->getLanguageUrlPrefix($lang, false);
        }

        return $key;
    }
}