<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Site-level contents abstract analysable.
 *
 * @package   core_analytics
 * @copyright 2016 David Monllao {@link http://www.davidmonllao.com}
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

namespace core_analytics\local\analyser;

defined('MOODLE_INTERNAL') || die();

/**
 * Site-level contents abstract analysable.
 *
 * @package   core_analytics
 * @copyright 2016 David Monllao {@link http://www.davidmonllao.com}
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
abstract class sitewide extends base {

    /**
     * Return the list of analysables to analyse.
     *
     * @param string|null $action 'prediction', 'training' or null if no specific action needed.
     * @return \Iterator
     */
    public function get_analysables_iterator(?string $action = null) {
        // We can safely ignore $action as we have 1 single analysable element in this analyser.
        return new \ArrayIterator([new \core_analytics\site()]);
    }
}