lib.php

<?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/>.

/**
 * Lib file for callbacks
 *
 * @package   local_solalerts
 * @author    Mark Sharp <mark.sharp@solent.ac.uk>
 * @copyright 2022 Solent University {@link https://www.solent.ac.uk}
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

/**
 * Convert pluginfile urls into real urls
 *
 * @param stdClass $course
 * @param stdClass $cm
 * @param context $context
 * @param string $filearea
 * @param array $args
 * @param bool $forcedownload
 * @param array $options
 * @return stored_file|bool
 */
function local_solalerts_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options = []) {

    if ($filearea != 'alert') {
        return false;
    }
    $itemid = array_shift($args);
    $filename = array_pop($args);
    if (empty($args)) {
        $filepath = '/';
    } else {
        $filepath = '/' . implode('/', $args) . '/';
    }

    $fs = get_file_storage();
    $file = $fs->get_file($context->id, 'local_solalerts', $filearea, $itemid, $filepath, $filename);
    if (!$file) {
        return false;
    }
    send_stored_file($file, 0, 0, $forcedownload, $options);
}