Grav\Plugin\Admin\AdminController::taskBackup PHP Method

    protected function taskBackup()
    {
        $param_sep = $this->grav['config']->get('system.param_sep', ':');
        if (!$this->authorizeTask('backup', ['admin.maintenance', 'admin.super'])) {
            return false;
        }
        $download = $this->grav['uri']->param('download');
        if ($download) {
            $file = base64_decode(urldecode($download));
            $backups_root_dir = $this->grav['locator']->findResource('backup://', true);
            if (substr($file, 0, strlen($backups_root_dir)) !== $backups_root_dir) {
                header('HTTP/1.1 401 Unauthorized');
                exit;
            }
            Utils::download($file, true);
        }
        $log = JsonFile::instance($this->grav['locator']->findResource("log://backup.log", true, true));
        try {
            $backup = ZipBackup::backup();
        } catch (\Exception $e) {
            $this->admin->json_response = ['status' => 'error', 'message' => $this->admin->translate('PLUGIN_ADMIN.AN_ERROR_OCCURRED') . '. ' . $e->getMessage()];
            return true;
        }
        $download = urlencode(base64_encode($backup));
        $url = rtrim($this->grav['uri']->rootUrl(true), '/') . '/' . trim($this->admin->base, '/') . '/task' . $param_sep . 'backup/download' . $param_sep . $download . '/admin-nonce' . $param_sep . Utils::getNonce('admin-form');
        $log->content(['time' => time(), 'location' => $backup]);
        $log->save();
        $this->admin->json_response = ['status' => 'success', 'message' => $this->admin->translate('PLUGIN_ADMIN.YOUR_BACKUP_IS_READY_FOR_DOWNLOAD') . '. <a href="' . $url . '" class="button">' . $this->admin->translate('PLUGIN_ADMIN.DOWNLOAD_BACKUP') . '</a>', 'toastr' => ['timeOut' => 0, 'extendedTimeOut' => 0, 'closeButton' => true]];
        return true;
    }