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/>.

/**

 * The mod_hvp user grades

 *

 * @package    mod_hvp

 * @copyright  2016 Joubel AS

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

 */

namespace mod_hvp;

defined('MOODLE_INTERNAL') || die();

require(__DIR__ . '/../lib.php');

/**

 * Handles grade storage for users

 * @package mod_hvp

 */

class user_grades {

    public static function handle_ajax() {

        global $DB, $USER, $CFG;

        if (!\H5PCore::validToken('result', required_param('token', PARAM_RAW))) {

            \H5PCore::ajaxError(get_string('invalidtoken', 'hvp'));

            return;

        }

        $cm = get_coursemodule_from_id('hvp', required_param('contextId', PARAM_INT));

        if (!$cm) {

            \H5PCore::ajaxError('No such content');

            http_response_code(404);

            return;

        }

        // Content parameters.

        $score = required_param('score', PARAM_INT);

        $maxscore = required_param('maxScore', PARAM_INT);

        // Check permission.

        $context = \context_module::instance($cm->id);

        if (!has_capability('mod/hvp:saveresults', $context)) {

            \H5PCore::ajaxError(get_string('nopermissiontosaveresult', 'hvp'));

            http_response_code(403);

            return;

        }

        // Get hvp data from content.

        $hvp = $DB->get_record('hvp', array('id' => $cm->instance));

        if (!$hvp) {

            \H5PCore::ajaxError('No such content');

            http_response_code(404);

            return;

        }

        // Create grade object and set grades.

        $grade = (object) array(

            'userid' => $USER->id

        );

        // Set grade using Gradebook API.

        $hvp->cmidnumber = $cm->idnumber;

        $hvp->name = $cm->name;

        $hvp->rawgrade = $score;

        $hvp->rawgrademax = $maxscore;

        hvp_grade_item_update($hvp, $grade);

        // Get content info for log.

        $content = $DB->get_record_sql(

                "SELECT c.name AS title, l.machine_name AS name, l.major_version, l.minor_version

                   FROM {hvp} c

                   JOIN {hvp_libraries} l ON l.id = c.main_library_id

                  WHERE c.id = ?",

                array($hvp->id)

        );

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

        // Load Course.

        $course = $DB->get_record('course', array('id' => $cm->course));

        $completion = new \completion_info( $course );

        if ( $completion->is_enabled( $cm) ) {

            $completion->update_state($cm, COMPLETION_COMPLETE);

        }

        // Log results set event.

        new \mod_hvp\event(

                'results', 'set',

                $hvp->id, $content->title,

                $content->name, $content->major_version . '.' . $content->minor_version

        );

        // Trigger Moodle event for async notification messages.

        $event = \mod_hvp\event\attempt_submitted::create([

            'context' => $context,

        ]);

        $event->trigger();

        \H5PCore::ajaxSuccess();

    }

    /**

     *  Since the subcontent types do not have their own row in the table,

     *  we use the hvp_results_table as a 'staging area' to set and get

     *  dynamically graded scores.

     */

    public static function handle_dynamic_grading() {

        global $DB;

        if (!\H5PCore::validToken('result', required_param('token', PARAM_RAW))) {

            \H5PCore::ajaxError(get_string('invalidtoken', 'hvp'));

            return;

        }

        $cm = get_coursemodule_from_id('hvp', required_param('contextId', PARAM_INT));

        if (!$cm) {

            \H5PCore::ajaxError('No such content');

            http_response_code(404);

            return;

        }

        // Content parameters.

        $subcontentid = required_param('subcontent_id', PARAM_INT);

        $score = required_param('score', PARAM_INT);

        // Update the answer's score.

        $data = (object) [

            'id' => $subcontentid,

            'raw_score' => $score

        ];

        $DB->update_record('hvp_xapi_results', $data, false);

        // Load freshly updated record.

        $answer = $DB->get_record('hvp_xapi_results', array('id' => $subcontentid));

        // Get the sum of all the OEQ scores with the same parent.

        $totalgradablesscore = intval($DB->get_field_sql(

            "SELECT SUM(raw_score)

            FROM {hvp_xapi_results}

            WHERE parent_id = ?

            AND additionals = ?", array($answer->parent_id,

            '{"extensions":{"https:\/\/h5p.org\/x-api\/h5p-machine-name":"H5P.FreeTextQuestion"}}')

        ));

        // Get the original raw score from the main content type.

        $baseanswer = $DB->get_record('hvp_xapi_results', array(

            'id' => $answer->parent_id

        ));

        // Get hvp data from content.

        $hvp = $DB->get_record('hvp', array('id' => $cm->instance));

        if (!$hvp) {

            \H5PCore::ajaxError('No such content');

            http_response_code(404);

            return;

        }

        // Set grade using Gradebook API.

        $hvp->rawgrade = $baseanswer->raw_score + $totalgradablesscore;

        $hvp->rawgrademax = $baseanswer->max_score;

        hvp_grade_item_update($hvp, (object) array(

            'userid' => $answer->user_id

        ));

        // Get the num of ungraded OEQ answers.

        $numungraded = intval($DB->get_field_sql(

            "SELECT COUNT(*)

            FROM {hvp_xapi_results}

            WHERE parent_id = ?

            AND raw_score IS NULL

            AND additionals = ?", array($answer->parent_id,

            '{"extensions":{"https:\/\/h5p.org\/x-api\/h5p-machine-name":"H5P.FreeTextQuestion"}}')

        ));

        $response = [

            'score' => $answer->raw_score,

            'maxScore' => $answer->max_score,

            'totalUngraded' => $numungraded,

        ];

        \H5PCore::ajaxSuccess($response);

    }

    /**

     * Fetch score/maxScore for ungraded item + number of ungraded items.

     */

    public static function return_subcontent_grade() {

        global $DB;

        // Content parameters.

        $subcontentid = required_param('subcontent_id', PARAM_INT);

        $answer = $DB->get_record('hvp_xapi_results', array('id' => $subcontentid));

        // Get the num of ungraded OEQ answers.

        $numungraded = intval($DB->get_field_sql(

            "SELECT COUNT(*)

            FROM {hvp_xapi_results}

            WHERE parent_id = ?

            AND raw_score IS NULL

            AND additionals = ?", array($answer->parent_id,

            '{"extensions":{"https:\/\/h5p.org\/x-api\/h5p-machine-name":"H5P.FreeTextQuestion"}}')

        ));

        $response = [

            'score' => $answer->raw_score,

            'maxScore' => $answer->max_score,

            'totalUngraded' => $numungraded,

        ];

        \H5PCore::ajaxSuccess($response);

    }

}