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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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namespace core_xapi\external;
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use core_external\external_api;
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use core_external\external_function_parameters;
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use core_external\external_single_structure;
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use core_external\external_value;
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use core_xapi\handler;
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use core_xapi\iri;
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use core_xapi\xapi_exception;
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/**
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* This is the external API for generic xAPI states deletion.
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*
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* @package core_xapi
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* @since Moodle 4.3
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* @copyright 2023 Laurent David <laurent.david@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class delete_states extends external_api {
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use \core_xapi\local\helper\state_trait;
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/**
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* Process a state delete request.
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*
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* @param string $component The component name in frankenstyle.
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* @param string $activityiri The activity IRI.
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* @param string $agent The agent JSON.
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* @param string|null $registration The xAPI registration UUID.
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* @return void
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*/
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public static function execute(
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string $component,
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string $activityiri,
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string $agent,
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?string $registration = null,
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): void {
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global $USER;
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[
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'component' => $component,
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'activityId' => $activityiri,
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'agent' => $agent,
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'registration' => $registration,
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] = self::validate_parameters(self::execute_parameters(), [
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'component' => $component,
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'activityId' => $activityiri,
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'agent' => $agent,
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'registration' => $registration,
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]);
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static::validate_component($component);
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$handler = handler::create($component);
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$activityid = iri::extract($activityiri, 'activity');
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$agent = self::get_agent_from_json($agent);
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$user = $agent->get_user();
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if ($user->id != $USER->id) {
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throw new xapi_exception('State agent is not the current user');
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}
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$handler->wipe_states($activityid, $user->id, null, $registration);
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}
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/**
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* Parameters for execute.
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*
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* @return external_function_parameters
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*/
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public static function execute_parameters(): external_function_parameters {
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return new external_function_parameters([
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'component' => new external_value(PARAM_COMPONENT, 'Component name'),
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'activityId' => new external_value(PARAM_URL, 'xAPI activity ID IRI'),
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'agent' => new external_value(PARAM_RAW, 'The xAPI agent json'),
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'registration' => new external_value(PARAM_ALPHANUMEXT, 'The xAPI registration UUID', VALUE_DEFAULT, null)
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]);
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}
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/**
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* Return for execute.
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*/
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public static function execute_returns() {
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return null;
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}
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}
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