<?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/>.

/**
 * Page for editing random questions.
 *
 * @package    mod_quiz
 * @copyright  2018 Shamim Rezaie <shamim@moodle.com>
 * @author     2021 Safat Shahin <safatshahin@catalyst-au.net>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

use mod_quiz\quiz_settings;

> use mod_quiz\question\bank\random_question_view;



require_once(__DIR__ . '/../../config.php');
require_once($CFG->dirroot . '/mod/quiz/locallib.php');

> require_once($CFG->dirroot . '/mod/quiz/lib.php');



$slotid = required_param('slotid', PARAM_INT);
$returnurl = optional_param('returnurl', '', PARAM_LOCALURL);

// Get the quiz slot.
$slot = $DB->get_record('quiz_slots', ['id' => $slotid], '*', MUST_EXIST);
$quizobj = quiz_settings::create($slot->quizid);
$quiz = $quizobj->get_quiz();
$cm = $quizobj->get_cm();
$course = $quizobj->get_course();

require_login($course, false, $cm);

if ($returnurl) {
    $returnurl = new moodle_url($returnurl);
} else {
    $returnurl = new moodle_url('/mod/quiz/edit.php', ['cmid' => $cm->id]);
}

$url = new moodle_url('/mod/quiz/editrandom.php', ['slotid' => $slotid]);
$PAGE->set_url($url);
$PAGE->set_pagelayout('admin');
$PAGE->add_body_class('limitedwidth');

$setreference = $DB->get_record('question_set_references',
    ['itemid' => $slot->id, 'component' => 'mod_quiz', 'questionarea' => 'slot']);

< $filterconditions = json_decode($setreference->filtercondition);



> $filterconditions = json_decode($setreference->filtercondition, true);




< // Validate the question category.
< if (!$category = $DB->get_record('question_categories', ['id' => $filterconditions->questioncategoryid])) {
<     new moodle_exception('categorydoesnotexist', 'question', $returnurl);
< }



> $params = $filterconditions;
> $params['cmid'] = $cm->id;
> $extraparams['view'] = random_question_view::class;




< // Check permissions.
< $catcontext = context::instance_by_id($category->contextid);
< require_capability('moodle/question:useall', $catcontext);



> // Build required parameters.
> [$contexts, $thispageurl, $cm, $pagevars, $extraparams] = build_required_parameters_for_custom_view($params, $extraparams);



$thiscontext = $quizobj->get_context();
$contexts = new core_question\local\bank\question_edit_contexts($thiscontext);

// Create the editing form.
$mform = new mod_quiz\form\randomquestion_form(new moodle_url('/mod/quiz/editrandom.php'), ['contexts' => $contexts]);

// Set the form data.
$toform = new stdClass();

< $toform->category = "{$category->id},{$category->contextid}";
< $toform->includesubcategories = $filterconditions->includingsubcategories;



> $toform->category = $filterconditions['filter']['category']['values'][0];
> $includesubcategories = false;
> if (!empty($filterconditions['filter']['category']['filteroptions']['includesubcategories'])) {
>     $includesubcategories = true;
> }
> $toform->includesubcategories = $includesubcategories;


$toform->fromtags = [];

< if (isset($filterconditions->tags)) {
<     $currentslottags = $filterconditions->tags;



> if (isset($filterconditions['tags'])) {
>     $currentslottags = $filterconditions['tags'];


    foreach ($currentslottags as $slottag) {
        $toform->fromtags[] = $slottag;
    }
}

$toform->returnurl = $returnurl;
$toform->slotid = $slot->id;
if ($cm !== null) {
    $toform->cmid = $cm->id;
    $toform->courseid = $cm->course;
} else {
    $toform->courseid = $COURSE->id;
}

$mform->set_data($toform);

if ($mform->is_cancelled()) {
    redirect($returnurl);
} else if ($fromform = $mform->get_data()) {
    list($newcatid, $newcontextid) = explode(',', $fromform->category);
    if ($newcatid != $category->id) {
        $contextid = $newcontextid;
    } else {
        $contextid = $category->contextid;
    }
    $setreference->questionscontextid = $contextid;

    // Set the filter conditions.
    $filtercondition = new stdClass();
    $filtercondition->questioncategoryid = $newcatid;
    $filtercondition->includingsubcategories = $fromform->includesubcategories;

    if (isset($fromform->fromtags)) {
        $tags = [];
        foreach ($fromform->fromtags as $tagstring) {
            list($tagid, $tagname) = explode(',', $tagstring);
            $tags[] = "{$tagid},{$tagname}";
        }
        if (!empty($tags)) {
            $filtercondition->tags = $tags;
        }
    }

    $setreference->filtercondition = json_encode($filtercondition);
    $DB->update_record('question_set_references', $setreference);

    redirect($returnurl);
}

$PAGE->set_title('Random question');
$PAGE->set_heading($COURSE->fullname);
$PAGE->navbar->add('Random question');


> // Custom View.
// Display a heading, question editing form.
> $questionbank = new random_question_view($contexts, $thispageurl, $course, $cm, $params, $extraparams);
echo $OUTPUT->header();
> 
$heading = get_string('randomediting', 'mod_quiz');
> // Output.
echo $OUTPUT->heading_with_help($heading, 'randomquestion', 'mod_quiz');
> $renderer = $PAGE->get_renderer('mod_quiz', 'edit');

> $data = new \stdClass();
$mform->display();
> $data->questionbank = $renderer->question_bank_contents($questionbank, $params);

> $data->cmid = $cm->id;
echo $OUTPUT->footer();
> $data->slotid = $slot->id;
> $data->returnurl = $returnurl;
> $updateform = $OUTPUT->render_from_template('mod_quiz/update_filter_condition_form', $data);
> $PAGE->requires->js_call_amd('mod_quiz/update_random_question_filter_condition', 'init');
> 



< 
< $mform->display();
< 



> echo $updateform;