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<?php

if (!class_exists('WP_Upgrader', false)) {
    include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
}
class GPLVault_Plugin_Upgrader extends Plugin_Upgrader
{
    public function upgrade_strings()
    {
        parent::upgrade_strings();
        $this->strings['downloading_package'] = __('Downloading the GPLVault plugin upgrade package&#8230;', 'gplvault');
    }
    public function install_strings()
    {
        parent::install_strings();
        $this->strings['downloading_package'] = __('Downloading the GPLVault plugin install package&#8230;', 'gplvault');
    }
    public function download_package($package, $check_signatures = false, $hook_extra = array())
    {
        if (!preg_match('!^(http|https|ftp)://!i', $package) && file_exists($package)) {
            return $package;
        }
        if (empty($package)) {
            return new WP_Error('no_package', $this->strings['no_package']);
        }
        $this->skin->feedback('downloading_package', $package);
        $timeout = apply_filters('gv_download_timeout', 500);
        $download_file = download_url($package, (int) $timeout, $check_signatures);
        if (is_wp_error($download_file) && !$download_file->get_error_data('softfail-filename')) {
            return new WP_Error('download_failed', $this->strings['download_failed'], $download_file->get_error_message());
        }
        return $download_file;
    }
    public function install($package, $args = array())
    {
        $defaults = array('clear_update_cache' => true);
        $parsed_args = wp_parse_args($args, $defaults);
        $this->init();
        $this->install_strings();
        add_filter('upgrader_source_selection', array($this, 'check_package'));
        if ($parsed_args['clear_update_cache']) {
            add_action('upgrader_process_complete', 'wp_clean_plugins_cache', 9, 0);
        }
        $this->run(array('package' => $package, 'destination' => WP_PLUGIN_DIR, 'clear_destination' => true, 'clear_working' => true, 'hook_extra' => array('type' => 'plugin', 'action' => 'install')));
        remove_action('upgrader_process_complete', 'wp_clean_plugins_cache', 9);
        remove_filter('upgrader_source_selection', array($this, 'check_package'));
        if (!$this->result || is_wp_error($this->result)) {
            return $this->result;
        }
        wp_clean_plugins_cache($parsed_args['clear_update_cache']);
        return true;
    }
    public function bulk_upgrade($plugins, $args = array())
    {
        remove_all_actions('upgrader_process_complete');
        $defaults = array('clear_update_cache' => true);
        $parsed_args = wp_parse_args($args, $defaults);
        $this->init();
        $this->bulk = true;
        $this->upgrade_strings();
        $current = get_site_transient('gv_plugin_updates');
        add_filter('upgrader_clear_destination', array($this, 'delete_old_plugin'), 10, 4);
        $this->skin->header();
        $res = $this->fs_connect(array(WP_CONTENT_DIR, WP_PLUGIN_DIR));
        if (!$res) {
            $this->skin->footer();
            return false;
        }
        $this->skin->bulk_header();
        $maintenance = is_multisite() && !empty($plugins);
        foreach ($plugins as $plugin) {
            $maintenance = $maintenance || is_plugin_active($plugin) && isset($current->response[$plugin]);
        }
        if ($maintenance) {
            $this->maintenance_mode(true);
        }
        $results = array();
        $this->update_count = count($plugins);
        $this->update_current = 0;
        foreach ($plugins as $plugin) {
            $this->update_current++;
            $this->skin->plugin_info = get_plugin_data(WP_PLUGIN_DIR . '/' . $plugin, false, true);
            if (!isset($current->response[$plugin])) {
                $this->skin->set_result('up_to_date');
                $this->skin->before();
                $this->skin->feedback('up_to_date');
                $this->skin->after();
                $results[$plugin] = true;
                continue;
            }
            $r = $current->response[$plugin];
            $this->skin->plugin_active = is_plugin_active($plugin);
            $package = gv_api_manager()->download(array('product_id' => $r->id));
            if (!is_wp_error($package)) {
                $r->package = $package;
            }
            $result = $this->run(array('package' => $r->package, 'destination' => WP_PLUGIN_DIR, 'clear_destination' => true, 'clear_working' => true, 'is_multi' => true, 'hook_extra' => array('plugin' => $plugin)));
            $results[$plugin] = $this->result;
            if (false === $result) {
                break;
            }
        }
        $this->maintenance_mode(false);
        do_action('gv_upgrader_process_complete', $this, array('action' => 'update', 'type' => 'plugin', 'bulk' => true, 'plugins' => $plugins));
        $this->skin->bulk_footer();
        $this->skin->footer();
        remove_filter('upgrader_clear_destination', array($this, 'delete_old_plugin'));
        foreach ($results as $plugin => $result) {
            if (!$result || is_wp_error($result)) {
                continue;
            }
        }
        return $results;
    }
}