Proyectos de Subversion Moodle

<?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/>.

use core_external\external_api;

use core_external\external_function_parameters;

use core_external\external_multiple_structure;

use core_external\external_single_structure;

use core_external\external_value;

/**

 * External course participation api.

 *

 * This api is mostly read only, the actual enrol and unenrol

 * support is in each enrol plugin.

 *

 * @package    enrol_manual

 * @category   external

 * @copyright  2011 Jerome Mouneyrac

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 * @since Moodle 2.2

 */

class enrol_manual_external extends external_api {

    /**

     * Returns description of method parameters.

     *

     * @return external_function_parameters

     * @since Moodle 2.2

     */

    public static function enrol_users_parameters() {

        return new external_function_parameters(

                array(

                    'enrolments' => new external_multiple_structure(

                            new external_single_structure(

                                    array(

                                        'roleid' => new external_value(PARAM_INT, 'Role to assign to the user'),

                                        'userid' => new external_value(PARAM_INT, 'The user that is going to be enrolled'),

                                        'courseid' => new external_value(PARAM_INT, 'The course to enrol the user role in'),

                                        'timestart' => new external_value(PARAM_INT, 'Timestamp when the enrolment start', VALUE_OPTIONAL),

                                        'timeend' => new external_value(PARAM_INT, 'Timestamp when the enrolment end', VALUE_OPTIONAL),

                                        'suspend' => new external_value(PARAM_INT, 'set to 1 to suspend the enrolment', VALUE_OPTIONAL)

                                    )

                            )

                    )

                )

        );

    }

    /**

     * Enrolment of users.

     *

     * Function throw an exception at the first error encountered.

     * @param array $enrolments  An array of user enrolment

     * @since Moodle 2.2

     */

    public static function enrol_users($enrolments) {

        global $DB, $CFG;

        require_once($CFG->libdir . '/enrollib.php');

        $params = self::validate_parameters(self::enrol_users_parameters(),

                array('enrolments' => $enrolments));

        $transaction = $DB->start_delegated_transaction(); // Rollback all enrolment if an error occurs

                                                           // (except if the DB doesn't support it).

        // Retrieve the manual enrolment plugin.

        $enrol = enrol_get_plugin('manual');

        if (empty($enrol)) {

            throw new moodle_exception('manualpluginnotinstalled', 'enrol_manual');

        }

        foreach ($params['enrolments'] as $enrolment) {

            // Ensure the current user is allowed to run this function in the enrolment context.

            $context = context_course::instance($enrolment['courseid'], IGNORE_MISSING);

            self::validate_context($context);

            // Check that the user has the permission to manual enrol.

            require_capability('enrol/manual:enrol', $context);

            // Throw an exception if user is not able to assign the role.

            $roles = get_assignable_roles($context);

            if (!array_key_exists($enrolment['roleid'], $roles)) {

                $errorparams = new stdClass();

                $errorparams->roleid = $enrolment['roleid'];

                $errorparams->courseid = $enrolment['courseid'];

                $errorparams->userid = $enrolment['userid'];

                throw new moodle_exception('wsusercannotassign', 'enrol_manual', '', $errorparams);

            }

            // Check manual enrolment plugin instance is enabled/exist.

            $instance = null;

            $enrolinstances = enrol_get_instances($enrolment['courseid'], true);

            foreach ($enrolinstances as $courseenrolinstance) {

              if ($courseenrolinstance->enrol == "manual") {

                  $instance = $courseenrolinstance;

                  break;

              }

            }

            if (empty($instance)) {

                $errorparams = new stdClass();

                $errorparams->courseid = $enrolment['courseid'];

                throw new moodle_exception('wsnoinstance', 'enrol_manual', '', $errorparams);

            }

            // Check that the plugin accept enrolment (it should always the case, it's hard coded in the plugin).

            if (!$enrol->allow_enrol($instance)) {

                $errorparams = new stdClass();

                $errorparams->roleid = $enrolment['roleid'];

                $errorparams->courseid = $enrolment['courseid'];

                $errorparams->userid = $enrolment['userid'];

                throw new moodle_exception('wscannotenrol', 'enrol_manual', '', $errorparams);

            }

            // Finally proceed the enrolment.

            $enrolment['timestart'] = isset($enrolment['timestart']) ? $enrolment['timestart'] : 0;

            $enrolment['timeend'] = isset($enrolment['timeend']) ? $enrolment['timeend'] : 0;

            $enrolment['status'] = (isset($enrolment['suspend']) && !empty($enrolment['suspend'])) ?

                    ENROL_USER_SUSPENDED : ENROL_USER_ACTIVE;

            $enrol->enrol_user($instance, $enrolment['userid'], $enrolment['roleid'],

                    $enrolment['timestart'], $enrolment['timeend'], $enrolment['status']);

        }

        $transaction->allow_commit();

    }

    /**

     * Returns description of method result value.

     *

     * @return null

     * @since Moodle 2.2

     */

    public static function enrol_users_returns() {

        return null;

    }

    /**

     * Returns description of method parameters.

     *

     * @return external_function_parameters

     */

    public static function unenrol_users_parameters() {

        return new external_function_parameters(array(

            'enrolments' => new external_multiple_structure(

                new external_single_structure(

                    array(

                        'userid' => new external_value(PARAM_INT, 'The user that is going to be unenrolled'),

                        'courseid' => new external_value(PARAM_INT, 'The course to unenrol the user from'),

                        'roleid' => new external_value(PARAM_INT, 'The user role', VALUE_OPTIONAL),

                    )

                )

            )

        ));

    }

    /**

     * Unenrolment of users.

     *

     * @param array $enrolments an array of course user and role ids

     * @throws coding_exception

     * @throws dml_transaction_exception

     * @throws invalid_parameter_exception

     * @throws moodle_exception

     * @throws required_capability_exception

     * @throws restricted_context_exception

     */

    public static function unenrol_users($enrolments) {

        global $CFG, $DB;

        $params = self::validate_parameters(self::unenrol_users_parameters(), array('enrolments' => $enrolments));

        require_once($CFG->libdir . '/enrollib.php');

        $transaction = $DB->start_delegated_transaction(); // Rollback all enrolment if an error occurs.

        $enrol = enrol_get_plugin('manual');

        if (empty($enrol)) {

            throw new moodle_exception('manualpluginnotinstalled', 'enrol_manual');

        }

        foreach ($params['enrolments'] as $enrolment) {

            $context = context_course::instance($enrolment['courseid']);

            self::validate_context($context);

            require_capability('enrol/manual:unenrol', $context);

            $instance = $DB->get_record('enrol', array('courseid' => $enrolment['courseid'], 'enrol' => 'manual'));

            if (!$instance) {

                throw new moodle_exception('wsnoinstance', 'enrol_manual', '', $enrolment);

            }

            $user = $DB->get_record('user', array('id' => $enrolment['userid']));

            if (!$user) {

                throw new invalid_parameter_exception('User id not exist: '.$enrolment['userid']);

            }

            if (!$enrol->allow_unenrol($instance)) {

                throw new moodle_exception('wscannotunenrol', 'enrol_manual', '', $enrolment);

            }

            $enrol->unenrol_user($instance, $enrolment['userid']);

        }

        $transaction->allow_commit();

    }

    /**

     * Returns description of method result value.

     *

     * @return null

     */

    public static function unenrol_users_returns() {

        return null;

    }

}