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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/>.
namespace core_xapi\external;
use core_external\external_api;
use core_external\external_function_parameters;
use core_external\external_single_structure;
use core_external\external_value;
use core_xapi\handler;
use core_xapi\iri;
use core_xapi\xapi_exception;
/**
* This is the external API for generic xAPI states deletion.
*
* @package core_xapi
* @since Moodle 4.3
* @copyright 2023 Laurent David <laurent.david@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class delete_states extends external_api {
use \core_xapi\local\helper\state_trait;
/**
* Process a state delete request.
*
* @param string $component The component name in frankenstyle.
* @param string $activityiri The activity IRI.
* @param string $agent The agent JSON.
* @param string|null $registration The xAPI registration UUID.
* @return void
*/
public static function execute(
string $component,
string $activityiri,
string $agent,
?string $registration = null,
): void {
global $USER;
[
'component' => $component,
'activityId' => $activityiri,
'agent' => $agent,
'registration' => $registration,
] = self::validate_parameters(self::execute_parameters(), [
'component' => $component,
'activityId' => $activityiri,
'agent' => $agent,
'registration' => $registration,
]);
static::validate_component($component);
$handler = handler::create($component);
$activityid = iri::extract($activityiri, 'activity');
$agent = self::get_agent_from_json($agent);
$user = $agent->get_user();
if ($user->id != $USER->id) {
throw new xapi_exception('State agent is not the current user');
}
$handler->wipe_states($activityid, $user->id, null, $registration);
}
/**
* Parameters for execute.
*
* @return external_function_parameters
*/
public static function execute_parameters(): external_function_parameters {
return new external_function_parameters([
'component' => new external_value(PARAM_COMPONENT, 'Component name'),
'activityId' => new external_value(PARAM_URL, 'xAPI activity ID IRI'),
'agent' => new external_value(PARAM_RAW, 'The xAPI agent json'),
'registration' => new external_value(PARAM_ALPHANUMEXT, 'The xAPI registration UUID', VALUE_DEFAULT, null)
]);
}
/**
* Return for execute.
*/
public static function execute_returns() {
return null;
}
}