<?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/>.

/**
 * Callback and library methods for core communication.
 *
 * @package    core_communication
 * @copyright  2023 Safat Shahin <safat.shahin@moodle.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

/**
 * Serve the files from the core_communication file areas.
 *
 * @param stdClass $course the course object
 * @param stdClass $cm the course module object
 * @param context $context the context
 * @param string $filearea the name of the file area
 * @param array $args extra arguments (itemid, path)
 * @param bool $forcedownload whether force download
 * @param array $options additional options affecting the file serving
 */
function core_communication_pluginfile(
    $course,
    $cm,
    $context,
    $filearea,
    $args,
    $forcedownload,
    array $options = []
): void {

    if ($filearea !== 'avatar') {
        return;
    }

    $itemid = array_shift($args);
    $filename = array_pop($args);

    // Retrieve the file from the Files API.
    $fs = get_file_storage();
    $file = $fs->get_file($context->id, 'core_communication', $filearea, $itemid, '/', $filename);
    if (!$file) {
        return;
    }

    send_file($file, $filename);
}