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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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/**
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* Returns the deep link resource via a POST to the platform.
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*
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* @package enrol_lti
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* @copyright 2021 Jake Dallimore <jrhdallimore@gmail.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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use core\http_client;
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use enrol_lti\local\ltiadvantage\lib\lti_cookie;
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use enrol_lti\local\ltiadvantage\lib\launch_cache_session;
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use enrol_lti\local\ltiadvantage\lib\issuer_database;
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use enrol_lti\local\ltiadvantage\repository\application_registration_repository;
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use enrol_lti\local\ltiadvantage\repository\deployment_repository;
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use enrol_lti\local\ltiadvantage\repository\published_resource_repository;
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use Packback\Lti1p3\DeepLinkResources\Resource;
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use Packback\Lti1p3\LtiConstants;
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use Packback\Lti1p3\LtiLineitem;
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use Packback\Lti1p3\LtiMessageLaunch;
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use Packback\Lti1p3\LtiServiceConnector;
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require(__DIR__.'/../../config.php');
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require_once(__DIR__.'/lib.php');
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global $CFG, $DB, $PAGE, $USER;
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require_once($CFG->libdir . '/filelib.php');
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require_login(null, false);
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require_sesskey();
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$launchid = required_param('launchid', PARAM_TEXT);
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$modules = optional_param_array('modules', [], PARAM_INT);
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$grades = optional_param_array('grades', [], PARAM_INT);
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$sesscache = new launch_cache_session();
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$issdb = new issuer_database(new application_registration_repository(), new deployment_repository());
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$cookie = new lti_cookie();
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$serviceconnector = new LtiServiceConnector($sesscache, new http_client());
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$messagelaunch = LtiMessageLaunch::fromCache($launchid, $issdb, $sesscache, $cookie, $serviceconnector);
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if (!$messagelaunch->isDeepLinkLaunch()) {
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throw new coding_exception('Configuration can only be accessed as part of a content item selection deep link '.
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'launch.');
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}
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$sesscache->purge();
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// Get the selected resources and create the resource link content items to post back.
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$resourcerepo = new published_resource_repository();
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$resources = $resourcerepo->find_all_by_ids_for_user($modules, $USER->id);
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$contentitems = [];
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foreach ($resources as $resource) {
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$contentitem = Resource::new()
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->setUrl($CFG->wwwroot . '/enrol/lti/launch.php')
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->setCustomParams(['id' => $resource->get_uuid()])
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->setTitle($resource->get_name());
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// If the activity supports grading, and the user has selected it, then include line item information.
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if ($resource->supports_grades() && in_array($resource->get_id(), $grades)) {
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require_once($CFG->libdir . '/gradelib.php');
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$lineitem = LtiLineitem::new()
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->setScoreMaximum($resource->get_grademax())
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->setResourceId($resource->get_uuid());
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$contentitem->setLineitem($lineitem);
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}
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$contentitems[] = $contentitem;
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}
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global $USER, $CFG, $OUTPUT;
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$PAGE->set_context(context_system::instance());
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$url = new moodle_url('/enrol/lti/configure.php');
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$PAGE->set_url($url);
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$PAGE->set_pagelayout('popup');
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echo $OUTPUT->header();
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$dl = $messagelaunch->getDeepLink();
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$formactionurl = $messagelaunch->getLaunchData()[LtiConstants::DL_DEEP_LINK_SETTINGS]['deep_link_return_url'];
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echo <<<HTML
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<form id="auto_submit" action="{$formactionurl}" method="POST">
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<input type="hidden" name="JWT" value="{$messagelaunch->getDeepLink()->getResponseJwt($contentitems)}" />
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<input type="submit" name="Go" />
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</form>
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<script>document.getElementById('auto_submit').submit();</script>
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HTML;
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