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/>.

/**

 * Optionally award a badge and redirect to the my badges page.

 *

 * @package    core_badges

 * @copyright  2019 Damyon Wiese

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

 */

require_once(__DIR__ . '/../config.php');

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

require_login();

$userbackpack = badges_get_user_backpack();

if (badges_open_badges_backpack_api($userbackpack->id) != OPEN_BADGES_V2) {

    throw new coding_exception('No backpacks support Open Badges V2.');

}

$id = required_param('hash', PARAM_ALPHANUM);

$PAGE->set_url('/badges/backpack-add.php', array('hash' => $id));

$PAGE->set_context(context_system::instance());

$output = $PAGE->get_renderer('core', 'badges');

$issuedbadge = new \core_badges\output\issued_badge($id);

if (!empty($issuedbadge->recipient->id)) {

    // The flow for issuing a badge is:

    // * Create issuer

    // * Create badge

    // * Create assertion (Award the badge!)

    // With the introduction OBv2.1 and MDL-65959 to allow cross region Badgr imports the above (old) procedure will

    // only be completely performed if both the site and user backpacks conform to the same apiversion.

    // Else we will attempt at pushing the assertion to the user's backpack. In this case, the id set against the assertion

    // has to be a publicly accessible resource.

    // Get the backpack.

    $badgeid = $issuedbadge->badgeid;

    $badge = new badge($badgeid);

    $backpack = $DB->get_record('badge_backpack', array('userid' => $USER->id));

    $userbackpack = badges_get_site_backpack($backpack->externalbackpackid, $USER->id);

    $assertion = new core_badges_assertion($id, OPEN_BADGES_V2);

    $assertiondata = $assertion->get_badge_assertion(false, false);

    $assertionid = $assertion->get_assertion_hash();

    $assertionentityid = $assertiondata['id'];

    $badgeadded = false;

    if (badges_open_badges_backpack_api() == OPEN_BADGES_V2) {

        $sitebackpack = badges_get_site_primary_backpack();

        $api = new \core_badges\backpack_api($sitebackpack);

        $response = $api->authenticate();

        // A numeric response indicates a valid successful authentication. Else an error object will be returned.

        if (is_numeric($response)) {

            // Create issuer.

            $issuer = $assertion->get_issuer();

            if (!($issuerentityid = badges_external_get_mapping($sitebackpack->id, OPEN_BADGES_V2_TYPE_ISSUER, $issuer['email']))) {

                $response = $api->put_issuer($issuer);

                if (!$response) {

                    throw new moodle_exception('invalidrequest', 'error');

                }

                $issuerentityid = $response->id;

                badges_external_create_mapping($sitebackpack->id, OPEN_BADGES_V2_TYPE_ISSUER, $issuer['email'],

                    $issuerentityid);

            }

            // Create badge.

            $badge = $assertion->get_badge_class(false);

            $badgeid = $assertion->get_badge_id();

            if (!($badgeentityid = badges_external_get_mapping($sitebackpack->id, OPEN_BADGES_V2_TYPE_BADGE, $badgeid))) {

                $response = $api->put_badgeclass($issuerentityid, $badge);

                if (!$response) {

                    throw new moodle_exception('invalidrequest', 'error');

                }

                $badgeentityid = $response->id;

                badges_external_create_mapping($sitebackpack->id, OPEN_BADGES_V2_TYPE_BADGE, $badgeid,

                    $badgeentityid);

            }

            // Create assertion (Award the badge!).

            $assertionentityid = badges_external_get_mapping(

                $sitebackpack->id,

                OPEN_BADGES_V2_TYPE_ASSERTION,

                $assertionid

            );

            if ($assertionentityid && strpos($sitebackpack->backpackapiurl, 'badgr')) {

                $assertionentityid = badges_generate_badgr_open_url(

                    $sitebackpack,

                    OPEN_BADGES_V2_TYPE_ASSERTION,

                    $assertionentityid

                );

            }

            // Create an assertion for the recipient in the issuer's account.

            if (!$assertionentityid) {

                $response = $api->put_badgeclass_assertion($badgeentityid, $assertiondata);

                if (!$response) {

                    throw new moodle_exception('invalidrequest', 'error');

                }

                $assertionentityid = badges_generate_badgr_open_url($sitebackpack, OPEN_BADGES_V2_TYPE_ASSERTION, $response->id);

                $badgeadded = true;

                badges_external_create_mapping($sitebackpack->id, OPEN_BADGES_V2_TYPE_ASSERTION, $assertionid,

                    $response->id);

            } else {

                // An assertion already exists. Make sure it's up to date.

                $internalid = badges_external_get_mapping(

                    $sitebackpack->id,

                    OPEN_BADGES_V2_TYPE_ASSERTION,

                    $assertionid,

                    'externalid'

                );

                $response = $api->update_assertion($internalid, $assertiondata);

                if (!$response) {

                    throw new moodle_exception('invalidrequest', 'error');

                }

            }

        }

    }

    // Now award/upload the badge to the user's account.

    // - If a user and site backpack have the same provider we can skip this as Badgr automatically maps recipients

    // based on email address.

    // - This is only needed when the backpacks are from different regions.

    if ($assertionentityid && !badges_external_get_mapping($userbackpack->id, OPEN_BADGES_V2_TYPE_ASSERTION, $assertionid)) {

        $userapi = new \core_badges\backpack_api($userbackpack, $backpack);

        $userapi->authenticate();

        $response = $userapi->import_badge_assertion($assertionentityid);

        if (!$response) {

            throw new moodle_exception('invalidrequest', 'error');

        }

        $assertionentityid = $response->id;

        $badgeadded = true;

        badges_external_create_mapping($userbackpack->id, OPEN_BADGES_V2_TYPE_ASSERTION, $assertionid,

            $assertionentityid);

    }

    $response = $badgeadded ? ['success' => 'addedtobackpack'] : ['warning' => 'existsinbackpack'];

    redirect(new moodle_url('/badges/mybadges.php', $response));

} else {

    redirect(new moodle_url('/badges/mybadges.php'));

}