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<?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/>.
/**
* Statement definition object for xAPI structure checking and usage.
*
* @package core_xapi
* @copyright 2020 Ferran Recio
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace core_xapi\local\statement;
use core_xapi\xapi_exception;
use core_xapi\iri;
use stdClass;
defined('MOODLE_INTERNAL') || die();
/**
* Validation and usage of xAPI definition.
*
* Definition contains extra information about user interaction with
* questions and other activities inside a xAPI statement. For now
* it performs a basic validation on the provided data.
*
* @copyright 2020 Ferran Recio
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class item_definition extends item {
/** @var string The statement. */
protected $interactiontype;
/**
* Function to create a definition from part of the xAPI statement.
*
* @param stdClass $data the original xAPI element.
*/
protected function __construct(stdClass $data) {
parent::__construct($data);
$this->interactiontype = $data->interactionType ?? null;
}
/**
* Function to create an item from part of the xAPI statement.
*
* @param stdClass $data the original xAPI element
* @return item item_definition xAPI generated
*/
public static function create_from_data(stdClass $data): item {
// Interaction Type is a optopnal param.
if (!empty($data->interactionType)) {
$posiblevalues = [
'choice' => true,
'fill-in' => true,
'long-fill-in' => true,
'true-false' => true,
'matching' => true,
'performance' => true,
'sequencing' => true,
'likert' => true,
'numeric' => true,
'other' => true,
'compound' => true,
];
if (!isset($posiblevalues[$data->interactionType])) {
throw new xapi_exception("Invalid definition \"{$data->interactionType}\"");
}
}
return new self($data);
}
/**
* Return the definition interaction type.
*/
public function get_interactiontype(): ?string {
return $this->interactiontype;
}
}