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<?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/>.

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

/**
 * Quiz module test data generator class
 *
 * @package mod_quiz
 * @copyright 2012 The Open University
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class mod_quiz_generator extends testing_module_generator {

public function create_instance($record = null, array $options = null) {
        global $CFG;

require_once($CFG->dirroot.'/mod/quiz/locallib.php');
        $record = (object)(array)$record;

$defaultquizsettings = array(
            'timeopen'               => 0,
            'timeclose'              => 0,
            'preferredbehaviour'     => 'deferredfeedback',
            'attempts'               => 0,
            'attemptonlast'          => 0,
            'grademethod'            => QUIZ_GRADEHIGHEST,
            'decimalpoints'          => 2,
            'questiondecimalpoints'  => -1,
            'attemptduring'          => 1,
            'correctnessduring'      => 1,
            'marksduring'            => 1,
            'specificfeedbackduring' => 1,
            'generalfeedbackduring'  => 1,
            'rightanswerduring'      => 1,
            'overallfeedbackduring'  => 0,
            'attemptimmediately'          => 1,
            'correctnessimmediately'      => 1,
            'marksimmediately'            => 1,
            'specificfeedbackimmediately' => 1,
            'generalfeedbackimmediately'  => 1,
            'rightanswerimmediately'      => 1,
            'overallfeedbackimmediately'  => 1,
            'attemptopen'            => 1,
            'correctnessopen'        => 1,
            'marksopen'              => 1,
            'specificfeedbackopen'   => 1,
            'generalfeedbackopen'    => 1,
            'rightansweropen'        => 1,
            'overallfeedbackopen'    => 1,
            'attemptclosed'          => 1,
            'correctnessclosed'      => 1,
            'marksclosed'            => 1,
            'specificfeedbackclosed' => 1,
            'generalfeedbackclosed'  => 1,
            'rightanswerclosed'      => 1,
            'overallfeedbackclosed'  => 1,
            'questionsperpage'       => 1,
            'shuffleanswers'         => 1,
            'sumgrades'              => 0,
            'grade'                  => 100,
            'timecreated'            => time(),
            'timemodified'           => time(),
            'timelimit'              => 0,
            'overduehandling'        => 'autoabandon',
            'graceperiod'            => 86400,
            'quizpassword'           => '',
            'subnet'                 => '',
            'browsersecurity'        => '',
            'delay1'                 => 0,
            'delay2'                 => 0,
            'showuserpicture'        => 0,
            'showblocks'             => 0,
            'navmethod'              => QUIZ_NAVMETHOD_FREE,
        );

foreach ($defaultquizsettings as $name => $value) {
            if (!isset($record->{$name})) {
                $record->{$name} = $value;
            }
        }

return parent::create_instance($record, (array)$options);
    }

/**
     * Create a quiz attempt for a particular user at a particular course.
     *
     * Currently this method can only create a first attempt for each
     * user at each quiz. TODO remove this limitation.
     *
     * @param int $quizid the quiz id (from the mdl_quit table, not cmid).
     * @param int $userid the user id.
     * @param array $forcedrandomquestions slot => questionid. Optional,
     *      used with random questions, to control which one is 'randomly' selected in that slot.
     * @param array $forcedvariants slot => variantno. Optional. Optional,
     *      used with question where get_num_variants is > 1, to control which
     *      variants is 'randomly' selected.
     * @return stdClass the new attempt.
     */
    public function create_attempt($quizid, $userid, array $forcedrandomquestions = [],
            array $forcedvariants = []) {
        // Build quiz object and load questions.
        $quizobj = quiz::create($quizid, $userid);

if (quiz_get_user_attempts($quizid, $userid, 'all', true)) {
            throw new coding_exception('mod_quiz_generator is currently limited to only ' .
                    'be able to create one attempt for each user. (This should be fixed.)');
        }

return quiz_prepare_and_start_new_attempt($quizobj, 1, null, false,
                $forcedrandomquestions, $forcedvariants);
    }

/**
     * Submit responses to a quiz attempt.
     *
     * To be realistic, you should ensure that $USER is set to the user whose attempt
     * it is before calling this.
     *
     * @param int $attemptid the id of the attempt which is being
     * @param array $responses array responses to submit. See description on
     *      {@link core_question_generator::get_simulated_post_data_for_questions_in_usage()}.
     * @param bool $checkbutton if simulate a click on the check button for each question, else simulate save.
     *      This should only be used with behaviours that have a check button.
     * @param bool $finishattempt if true, the attempt will be submitted.
     */
    public function submit_responses($attemptid, array $responses, $checkbutton, $finishattempt) {
        $questiongenerator = $this->datagenerator->get_plugin_generator('core_question');

$attemptobj = quiz_attempt::create($attemptid);

$postdata = $questiongenerator->get_simulated_post_data_for_questions_in_usage(
                $attemptobj->get_question_usage(), $responses, $checkbutton);

$attemptobj->process_submitted_actions(time(), false, $postdata);

// Bit if a hack for interactive behaviour.
        // TODO handle this in a more plugin-friendly way.
        if ($checkbutton) {
            $postdata = [];
            foreach ($responses as $slot => $notused) {
                $qa = $attemptobj->get_question_attempt($slot);
                if ($qa->get_behaviour() instanceof qbehaviour_interactive && $qa->get_behaviour()->is_try_again_state()) {
                    $postdata[$qa->get_control_field_name('sequencecheck')] = (string)$qa->get_sequence_check_count();
                    $postdata[$qa->get_flag_field_name()] = (string)(int)$qa->is_flagged();
                    $postdata[$qa->get_behaviour_field_name('tryagain')] = 1;
                }
            }

if ($postdata) {
                $attemptobj->process_submitted_actions(time(), false, $postdata);
            }
        }

if ($finishattempt) {
            $attemptobj->process_finish(time(), false);
        }
    }

/**
     * Create a quiz override (either user or group).
     *
     * @param array $data must specify quizid, and one of userid or groupid.
     */
    public function create_override(array $data): void {
        global $DB;

if (!isset($data['quiz'])) {
            throw new coding_exception('Must specify quiz (id) when creating a quiz override.');
        }

if (!isset($data['userid']) && !isset($data['groupid'])) {
            throw new coding_exception('Must specify one of userid or groupid when creating a quiz override.');
        }

if (isset($data['userid']) && isset($data['groupid'])) {
            throw new coding_exception('Cannot specify both userid and groupid when creating a quiz override.');
        }

$DB->insert_record('quiz_overrides', (object) $data);
    }
}