class.assLongMenuGUI.php

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<?php

use ILIAS\UI\Factory as UIFactory;
use ILIAS\UI\Renderer as UIRenderer;

class assLongMenuGUI extends assQuestionGUI implements ilGuiQuestionScoringAdjustable
{
    private const DEFAULT_MODAL_ID = 'ilGapModal';

    private readonly UIFactory $ui_factory;
    private readonly UIRenderer $ui_renderer;

    public function __construct($id = -1)
    {
        parent::__construct();
        $this->object = new assLongMenu();
        if ($id >= 0) {
            $this->object->loadFromDb($id);
        }
        global $DIC;
        $this->lng = $DIC['lng'];
        $this->ui_factory = $DIC['ui.factory'];
        $this->ui_renderer = $DIC['ui.renderer'];
    }

    public function getCommand($cmd)
    {
        return $cmd;
    }

    protected function writePostData(bool $always = false): int
    {
        $this->editForm = $this->buildEditForm();
        $this->editForm->setValuesByPost();
        $check = $this->editForm->checkInput() && $this->verifyAnswerOptions();

        if (!$check) {
            $this->editQuestion();
            return 1;
        }
        $this->writeQuestionGenericPostData();
        $this->writeQuestionSpecificPostData($this->editForm);
        $custom_check = $this->object->checkQuestionCustomPart($this->editForm);
        if (!$custom_check) {
            $this->tpl->setOnScreenMessage('failure', $this->lng->txt('form_input_not_valid'));
            $this->editQuestion();
            return 1;
        }
        $this->saveTaxonomyAssignments();
        return 0;
    }

    public function writeQuestionSpecificPostData(ilPropertyFormGUI $form): void
    {
        $min_auto_complete = (int) ($form->getInput('min_auto_complete') ?? assLongMenu::MIN_LENGTH_AUTOCOMPLETE);
        $hidden_text_files = $this->request_data_collector->string('hidden_text_files');
        $hidden_correct_answers = $this->request_data_collector->string('hidden_correct_answers');
        $long_menu_type = $this->request_data_collector->raw('long_menu_type') ?? [];
        $this->object->setLongMenuTextValue($this->request_data_collector->string('longmenu_text'));
        $this->object->setAnswers($this->trimArrayRecursive($this->stripSlashesRecursive(json_decode($hidden_text_files))));
        $this->object->setCorrectAnswers($this->trimArrayRecursive($this->stripSlashesRecursive(json_decode($hidden_correct_answers))));
        $this->object->setAnswerType(ilArrayUtil::stripSlashesRecursive($long_menu_type));
        $this->object->setQuestion($this->request_data_collector->string('question'));
        $this->object->setMinAutoComplete($min_auto_complete);
        $this->object->setIdenticalScoring($this->request_data_collector->int('identical_scoring'));

        $this->saveTaxonomyAssignments();
    }

    private function verifyAnswerOptions(): bool
    {
        $longmenu_text = $this->request_data_collector->raw('longmenu_text') ?? '';
        $hidden_text_files = $this->request_data_collector->raw('hidden_text_files') ?? '';
        $answer_options_from_text = preg_split(
            "/\\[" . assLongMenu::GAP_PLACEHOLDER . " (\\d+)\\]/",
            $longmenu_text
        );

        $answer_options_from_files = $this->stripSlashesRecursive(json_decode($hidden_text_files));
        if (count($answer_options_from_text) - 1 !== count($answer_options_from_files)) {
            $this->tpl->setOnScreenMessage('failure', $this->lng->txt('longmenu_answeroptions_differ'));
            return false;
        }

        $correct_answers = $this->stripSlashesRecursive(json_decode($this->request_data_collector->raw('hidden_correct_answers')));
        foreach ($correct_answers as $answer) {
            if (!is_numeric(str_replace(',', '.', $answer[1]))) {
                $this->tpl->setOnScreenMessage('failure', $this->lng->txt('points_non_numeric_or_negative_msg'));
                return false;
            }
        }
        return true;
    }

    private function stripSlashesRecursive(array $data): array
    {
        return array_map(
            function (string|array $v): string|array {
                if (is_array($v)) {
                    return $this->stripSlashesRecursive($v);
                }
                return ilUtil::stripSlashes($v);
            },
            $data
        );
    }

    private function trimArrayRecursive(array $data): array
    {
        return array_map(
            function (string|array $v): string|array {
                if (is_array($v)) {
                    return $this->trimArrayRecursive($v);
                }
                return trim($v);
            },
            $data
        );
    }

    public function editQuestion(
        bool $checkonly = false,
        ?bool $is_save_cmd = null
    ): bool {
        $form = $this->editForm;
        if ($form === null) {
            $form = $this->buildEditForm();
        }

        /*
         * sk 29.01.2025: This is a god aw-ful hack and one more sign,
         * that the flow here needs to change, but we need this to set the
         * question id on question creation (see: https://mantis.ilias.de/view.php?id=43705)
         */
        if ($this->object->getId() > 0) {
            $this->ctrl->setParameterByClass(self::class, 'q_id', $this->object->getId());
        }
        $form->setFormAction($this->ctrl->getFormActionByClass(self::class));
        $this->renderEditForm($form);
        return false;
    }
    protected function buildEditForm(): ilPropertyFormGUI
    {
        $form = $this->buildBasicEditFormObject();
        $this->addQuestionFormCommandButtons($form);
        $this->addBasicQuestionFormProperties($form);
        $this->populateQuestionSpecificFormPart($form);
        $this->populateTaxonomyFormSection($form);

        return $form;
    }

    public function populateQuestionSpecificFormPart(ilPropertyFormGUI $form): ilPropertyFormGUI
    {
        $long_menu_text = new ilTextAreaInputGUI($this->lng->txt("longmenu_text"), 'longmenu_text');
        $long_menu_text->setRequired(true);
        $long_menu_text->setRows(10);
        $long_menu_text->setCols(80);
        if (!$this->object->getSelfAssessmentEditingMode()) {
            if ($this->object->getAdditionalContentEditingMode() == assQuestion::ADDITIONAL_CONTENT_EDITING_MODE_RTE) {
                $long_menu_text->setRteTags(ilObjAdvancedEditing::_getUsedHTMLTags("assessment"));
                $long_menu_text->setRTESupport($this->object->getId(), "qpl", "assessment");
                $long_menu_text->setUseRte(true);
            }
        } else {
            $long_menu_text->setRteTags(ilAssSelfAssessmentQuestionFormatter::getSelfAssessmentTags());
            $long_menu_text->setUseTagsForRteOnly(false);
        }

        $long_menu_text->setValue($this->object->getLongMenuTextValue());
        $form->addItem($long_menu_text);

        $tpl = new ilTemplate('tpl.il_as_qpl_longmenu_question_gap_button_code.html', true, true, 'components/ILIAS/TestQuestionPool');
        $tpl->setVariable('INSERT_GAP', $this->lng->txt('insert_gap'));
        $tpl->parseCurrentBlock();
        $button = new ilCustomInputGUI('&nbsp;', '');
        $button->setHtml($tpl->get());
        $form->addItem($button);

        $min_auto_complete = new ilNumberInputGUI($this->lng->txt('min_auto_complete'), 'min_auto_complete');

        $auto_complete = $this->object->getMinAutoComplete();
        if ($auto_complete === 0) {
            $auto_complete = assLongMenu::MIN_LENGTH_AUTOCOMPLETE;
        }
        $min_auto_complete->setDecimals(0);
        $min_auto_complete->setValue($auto_complete);
        $min_auto_complete->setMinValue(1);
        $min_auto_complete->setMaxValue(99);
        $min_auto_complete->setSize(5);
        $form->addItem($min_auto_complete);
        // identical scoring
        $identical_scoring = new ilCheckboxInputGUI($this->lng->txt('identical_scoring'), 'identical_scoring');
        $identical_scoring->setValue(1);
        $identical_scoring->setChecked($this->object->getIdenticalScoring());
        $identical_scoring->setInfo($this->lng->txt('identical_scoring_desc'));
        $identical_scoring->setRequired(false);
        $form->addItem($identical_scoring);
        $hidden_text = new ilHiddenInputGUI('hidden_text_files');
        $form->addItem($hidden_text);

        $hidden_correct = new ilHiddenInputGUI('hidden_correct_answers');
        $form->addItem($hidden_correct);

        $long_menu_language = [
            'edit' => '[' . $this->lng->txt('edit') . ']',
            'type' => $this->lng->txt('type'),
            'answers' => $this->lng->txt('answers'),
            'answer_options' => $this->lng->txt('answer_options'),
            'correct_answers' => $this->lng->txt('correct_answers') . ':',
            'add_answers' => '[' . $this->lng->txt('add_answers') . ']',
            'manual_editing' => $this->lng->txt('manual_editing')
        ];

        $question_parts = [
            'list' => json_decode($this->object->getJsonStructure()) ?? [],
            'gap_placeholder' => assLongMenu::GAP_PLACEHOLDER,
            'last_updated_element' => 0,
            'replacement_word' => '',
            'filereader_usable' => false,
            'max_input_fields' => assLongMenu::MAX_INPUT_FIELDS
        ];
        $answers = $this->object->getAnswersObject();

        if ($this->request_data_collector->isset('hidden_text_files')) {
            $question_parts['list'] = json_decode($this->request_data_collector->raw('hidden_correct_answers')) ?? [];
            $answers = $this->request_data_collector->raw('hidden_text_files');
        }

        $this->tpl->addJavaScript('assets/js/longMenuQuestionGapBuilder.js');
        $this->tpl->addJavaScript('assets/js/longMenuQuestion.js');
        $tpl = new ilTemplate("tpl.il_as_qpl_longmenu_question_gap.html", true, true, "components/ILIAS/TestQuestionPool");
        $tpl->setVariable('MAX_INPUT_FIELDS', assLongMenu::MAX_INPUT_FIELDS);
        $tpl->setVariable('GAP_PLACEHOLDER', assLongMenu::GAP_PLACEHOLDER);
        $tpl->setVariable('SELECT_BOX', $this->lng->txt('insert_gap'));
        $tpl->setVariable("SELECT", $this->lng->txt('answers_select'));
        $tpl->setVariable("TEXT", $this->lng->txt('answers_text_box'));
        $tpl->setVariable("POINTS", $this->lng->txt('points'));
        $tpl->setVariable("INFO_TEXT_UPLOAD", $this->lng->txt('info_text_upload'));
        $tpl->setVariable("TXT_BROWSE", $this->lng->txt('select_file'));
        $tpl->setVariable('POINTS_ERROR', $this->lng->txt('enter_enough_positive_points'));
        $tpl->setVariable('AUTOCOMPLETE_ERROR', $this->lng->txt('autocomplete_error'));
        $tpl->setVariable('MISSING_VALUE', $this->lng->txt('msg_input_is_required'));
        $tpl->setVariable('SAVE', $this->lng->txt('save'));
        $tpl->setVariable('CANCEL', $this->lng->txt('cancel'));
        $tpl->setVariable('ADD_BUTTON', $this->ui_renderer->render(
            $this->ui_factory->symbol()->glyph()->add()->withAction('#')
        ));
        $tpl->setVariable('REMOVE_BUTTON', $this->ui_renderer->render(
            $this->ui_factory->symbol()->glyph()->remove()->withAction('#')
        ));
        $tag_input = new ilTagInputGUI();
        $tag_input->setPostVar('taggable');
        $tag_input->setJsSelfInit(false);
        $tag_input->setTypeAheadMinLength(1);
        $tpl->setVariable('TAGGING_PROTOTYPE', $tag_input->render(''));

        $modal_id = self::DEFAULT_MODAL_ID;
        $tpl->setVariable('MY_MODAL', $this->getModalHtml($modal_id));
        $tpl->parseCurrentBlock();
        $this->tpl->addOnLoadCode(
            'longMenuQuestion.Init(' .
            implode(', ', [
                json_encode($long_menu_language),
                json_encode($question_parts),
                $answers === '' ? '{}' : $answers,
                json_encode($modal_id)
            ])
            . ');'
        );

        $button = new ilCustomInputGUI('&nbsp;', '');
        $button->setHtml($tpl->get());
        $form->addItem($button);
        return $form;
    }

    private function getModalHtml(string &$modal_id): string
    {
        $modal = $this->ui_factory->modal()->interruptive('', '', '');
        $doc = new DOMDocument();
        @$doc->loadHTML($this->ui_renderer->render($modal));
        $dialogs = $doc->getElementsByTagName('dialog');
        $modal_id = $dialogs->item(0)->attributes->getNamedItem('id')->nodeValue ?? self::DEFAULT_MODAL_ID;
        return $doc->saveHTML();
    }

    public function populateAnswerSpecificFormPart(ilPropertyFormGUI $form): ilPropertyFormGUI
    {
        return $form;
    }

    public function getSolutionOutput(
        int $active_id,
        ?int $pass = null,
        bool $graphical_output = false,
        bool $result_output = false,
        bool $show_question_only = true,
        bool $show_feedback = false,
        bool $show_correct_solution = false,
        bool $show_manual_scoring = false,
        bool $show_question_text = true,
        bool $show_inline_feedback = true
    ): string {
        if (($active_id > 0) && (!$show_correct_solution)) {
            $user_solutions = $this->object->getSolutionValues($active_id, $pass, true);
        } else {
            $user_solutions = [];
            foreach ($this->object->getCorrectAnswersForQuestionSolution($this->object->getId()) as $idx => $val) {
                $user_solutions[] = [
                    'value1' => $idx,
                    'value2' => $val,
                ];
            }
        }

        return $this->renderSolutionOutput(
            $user_solutions,
            $active_id,
            $pass,
            $graphical_output,
            $result_output,
            $show_question_only,
            $show_feedback,
            $show_correct_solution,
            $show_manual_scoring,
            $show_question_text,
            false,
            $show_inline_feedback
        );
    }

    public function renderSolutionOutput(
        mixed $user_solutions,
        int $active_id,
        ?int $pass,
        bool $graphical_output = false,
        bool $result_output = false,
        bool $show_question_only = true,
        bool $show_feedback = false,
        bool $show_correct_solution = false,
        bool $show_manual_scoring = false,
        bool $show_question_text = true,
        bool $show_autosave_title = false,
        bool $show_inline_feedback = false,
    ): ?string {

        $user_solution = [];
        foreach ($user_solutions as $idx => $solution_value) {
            $user_solution[$solution_value["value1"]] = $solution_value["value2"];
        }

        $template = new ilTemplate("tpl.il_as_qpl_longmenu_question_output_solution.html", true, true, "components/ILIAS/TestQuestionPool");
        if ($show_question_text) {
            $template->setVariable("QUESTIONTEXT", $this->object->getQuestionForHTMLOutput());
        }
        $template->setVariable('LONGMENU_TEXT_SOLUTION', $this->getLongMenuTextWithInputFieldsInsteadOfGaps($user_solution, true, $graphical_output));

        $solution_template = new ilTemplate("tpl.il_as_tst_solution_output.html", true, true, "components/ILIAS/TestQuestionPool");
        $question_output = $template->get();
        $feedback = '';
        if ($show_feedback) {
            if (!$this->isTestPresentationContext()) {
                $fb = $this->getGenericFeedbackOutput((int) $active_id, $pass);
                $feedback .= strlen($fb) ? $fb : '';
            }

            $fb = $this->getSpecificFeedbackOutput([]);
            $feedback .= strlen($fb) ? $fb : '';
        }
        if (strlen($feedback)) {
            $cssClass = (
                $this->hasCorrectSolution($active_id, $pass) ?
                ilAssQuestionFeedback::CSS_CLASS_FEEDBACK_CORRECT : ilAssQuestionFeedback::CSS_CLASS_FEEDBACK_WRONG
            );

            $solution_template->setVariable("ILC_FB_CSS_CLASS", $cssClass);
            $solution_template->setVariable("FEEDBACK", ilLegacyFormElementsUtil::prepareTextareaOutput($feedback, true));
        }

        $solution_template->setVariable("SOLUTION_OUTPUT", $question_output);

        $solution_output = $solution_template->get();

        if (!$show_question_only) {
            $solution_output = $this->getILIASPage($solution_output);
        }

        return $solution_output;
    }

    public function getPreview(
        bool $show_question_only = false,
        bool $show_inline_feedback = false
    ): string {
        $user_solution = is_object($this->getPreviewSession()) ? (array) $this->getPreviewSession()->getParticipantsSolution() : [];
        $user_solution = array_values($user_solution);

        $template = $this->getTemplateForPreviewAndTest($user_solution);

        $question_output = $template->get();
        if (!$show_question_only) {
            $question_output = $this->getILIASPage($question_output);
        }
        return $question_output;
    }

    public function getTestOutput(
        int $active_id,
        int $pass,
        bool $is_question_postponed = false,
        array|bool $user_post_solutions = false,
        bool $show_specific_inline_feedback = false
    ): string {
        $user_solution = [];
        if ($active_id) {
            $solutions = $this->object->getUserSolutionPreferingIntermediate($active_id, $pass);
            foreach ($solutions as $idx => $solution_value) {
                $user_solution[$solution_value['value1']] = $solution_value['value2'];
            }
        }

        $template = $this->getTemplateForPreviewAndTest($user_solution);

        $question_output = $template->get();
        $page_output = $this->outQuestionPage('', $is_question_postponed, $active_id, $question_output);
        return $page_output;
    }

    protected function getTemplateForPreviewAndTest(array $user_solution): ilTemplate
    {
        $template = new ilTemplate('tpl.il_as_qpl_longmenu_question_output.html', true, true, 'components/ILIAS/TestQuestionPool');
        $this->tpl->addJavaScript('assets/js/longMenuQuestionPlayer.js');
        $this->tpl->addOnLoadCode('il.test.player.longmenu.init('
            . $this->object->getMinAutoComplete() . ', '
            . json_encode($this->object->getAvailableAnswerOptions())
            . ')');

        $template->setVariable('QUESTIONTEXT', $this->object->getQuestionForHTMLOutput());
        $template->setVariable('LONGMENU_TEXT', $this->getLongMenuTextWithInputFieldsInsteadOfGaps($user_solution));
        return $template;
    }

    public function getSpecificFeedbackOutput(array $userSolution): string
    {
        if (!$this->object->feedbackOBJ->specificAnswerFeedbackExists()) {
            return '';
        }

        $feedback = '<table class="test_specific_feedback"><tbody>';
        $gaps = $this->object->getCorrectAnswers();
        foreach ($gaps as $index => $answer) {
            $caption = assLongMenu::GAP_PLACEHOLDER . ' ';
            $caption .= $index + 1 . ': ';

            $feedback .= '<tr><td>';

            $feedback .= $caption . '</td><td>';
            $feedback .= $this->object->feedbackOBJ->getSpecificAnswerFeedbackTestPresentation(
                $this->object->getId(),
                0,
                $index
            ) . '</td> </tr>';
        }
        $feedback .= '</tbody></table>';
        return ilLegacyFormElementsUtil::prepareTextareaOutput($feedback, true);
    }


    public function getAfterParticipationSuppressionQuestionPostVars(): array
    {
        return [];
    }

    public function getLongMenuTextWithInputFieldsInsteadOfGaps($user_solution = [], $solution = false, $graphical = false): string
    {
        $return_value = '';
        $text_array = preg_split("/\\[" . assLongMenu::GAP_PLACEHOLDER . " (\\d+)\\]/", $this->object->getLongMenuTextValue());
        $correct_answers = $this->object->getCorrectAnswers();
        $answers = $this->object->getAnswers();
        foreach ($text_array as $key => $value) {
            $answer_is_correct = false;
            $user_value = '';
            $return_value .= ilLegacyFormElementsUtil::prepareTextareaOutput($value, true);
            if ($key < sizeof($text_array) - 1) {
                if (!array_key_exists($key, $correct_answers)) {
                    $this->tpl->setOnScreenMessage('failure', $this->lng->txt('longmenu_answeroptions_differ'));
                    continue;
                }
                if ($correct_answers[$key][2] === assLongMenu::ANSWER_TYPE_TEXT_VAL) {
                    if (array_key_exists($key, $user_solution)) {
                        $user_value = $user_solution[$key];
                        if (in_array($user_value, $correct_answers[$key][0])) {
                            $answer_is_correct = true;
                        }
                    }

                    $return_value .= $this->getTextGapTemplate($key, $user_value, $solution, $answer_is_correct, $graphical);
                } elseif ($correct_answers[$key][2] === assLongMenu::ANSWER_TYPE_SELECT_VAL) {
                    if (array_key_exists($key, $user_solution)) {
                        $user_value = $user_solution[$key];
                        if (in_array($user_value, $correct_answers[$key][0])) {
                            $answer_is_correct = true;
                        }
                    }
                    $return_value .= $this->getSelectGapTemplate($key, $answers[$key], $user_value, $solution, $answer_is_correct, $graphical);
                }
            }
        }
        return $return_value;
    }

    private function getTextGapTemplate($key, $value, $solution, $ok = false, $graphical = false): string
    {
        $tpl = new ilTemplate('tpl.il_as_qpl_longmenu_question_text_gap.html', true, true, 'components/ILIAS/TestQuestionPool');
        if ($solution) {
            $tpl->setVariable('DISABLED', 'disabled');
            $tpl->setVariable('JS_IGNORE', '_ignore');
            if ($graphical) {
                $correctness_icon = $this->generateCorrectnessIconsForCorrectness(self::CORRECTNESS_NOT_OK);
                if ($ok) {
                    $correctness_icon = $this->generateCorrectnessIconsForCorrectness(self::CORRECTNESS_OK);
                }
                $tpl->setVariable("ICON_OK", $correctness_icon);
            }
        }
        if ($solution) {
            $tpl->setVariable('SIZE', 'size="' . mb_strlen($value) . '"');
        }
        $tpl->setVariable('VALUE', htmlentities($value));
        $tpl->setVariable('KEY', $key);

        return $tpl->get();
    }

    private function getSelectGapTemplate($key, $answers, $user_value, $solution, $ok = false, $graphical = false): string
    {
        $tpl = new ilTemplate("tpl.il_as_qpl_longmenu_question_select_gap.html", true, true, "components/ILIAS/TestQuestionPool");
        $tpl->setVariable('KEY', $key);
        if ($solution) {
            $tpl->setVariable('DISABLED', 'disabled');
            $tpl->setVariable('JS_IGNORE', '_ignore');
            $tpl->setCurrentBlock('best_solution');
            if ($user_value == -1) {
                $tpl->setVariable("SOLUTION", $this->lng->txt("please_select"));
            } else {
                $tpl->setVariable('SOLUTION', $user_value);
            }
            if ($graphical) {
                $correctness_icon = $this->generateCorrectnessIconsForCorrectness(self::CORRECTNESS_NOT_OK);
                if ($ok) {
                    $correctness_icon = $this->generateCorrectnessIconsForCorrectness(self::CORRECTNESS_OK);
                }
                $tpl->setVariable("ICON_OK", $correctness_icon);
            }
            $tpl->parseCurrentBlock();
        } else {
            $tpl->setVariable("PLEASE_SELECT", $this->lng->txt("please_select"));
            foreach ($answers as $value) {
                $tpl->setCurrentBlock('select_option');
                $tpl->setVariable('VALUE', $value);
                if ($value == $user_value) {
                    $tpl->setVariable('SELECTED', 'selected');
                }
                $tpl->parseCurrentBlock();
            }
        }
        return $tpl->get();
    }

    public function getSubQuestionsIndex(): array
    {
        return array_keys($this->object->getAnswers());
    }

    public function getAnswersFrequency($relevantAnswers, $questionIndex): array
    {
        $answers = [];

        foreach ($relevantAnswers as $row) {
            if ($row['value1'] != $questionIndex) {
                continue;
            }

            if (!isset($answers[$row['value2']])) {
                //$label = $this->getAnswerTextLabel($row['value1'], $row['value2']);

                $answers[$row['value2']] = [
                    'answer' => $row['value2'], 'frequency' => 0
                ];
            }

            $answers[$row['value2']]['frequency']++;
        }

        return $answers;
    }

    public function getAnswerFrequencyTableGUI($parentGui, $parentCmd, $relevantAnswers, $questionIndex): ilAnswerFrequencyStatisticTableGUI
    {
        global $DIC; /* @var ILIAS\DI\Container $DIC */

        $table = parent::getAnswerFrequencyTableGUI(
            $parentGui,
            $parentCmd,
            $relevantAnswers,
            $questionIndex
        );

        $table->setTitle(
            sprintf(
                $DIC->language()->txt('tst_corrections_answers_tbl_subindex'),
                $DIC->language()->txt('longmenu') . ' ' . ($questionIndex + 1)
            )
        );

        return $table;
    }

    public function populateCorrectionsFormProperties(ilPropertyFormGUI $form): void
    {
        $correct_answers = $this->object->getCorrectAnswers();

        foreach ($this->object->getAnswers() as $lm_index => $lm) {
            $lm_values = [
                'answers_all' => [0 => $lm],
                'answers_all_count' => count($lm),
                'answers_correct' => $correct_answers[$lm_index][0]
            ];

            $lm_points = $correct_answers[$lm_index][1];

            $section = new ilFormSectionHeaderGUI();
            $section->setTitle($this->lng->txt('longmenu') . ' ' . ($lm_index + 1));
            $form->addItem($section);

            $lm_input = new ilAssLongmenuCorrectionsInputGUI(
                $this->lng->txt('answers'),
                'longmenu_' . $lm_index
            );

            $lm_input->setRequired(true);

            $lm_input->setValues($lm_values);

            $form->addItem($lm_input);

            $points_inp = new ilNumberInputGUI($this->lng->txt("points"), 'points_' . $lm_index);
            $points_inp->setRequired(true);
            $points_inp->allowDecimals(true);
            $points_inp->setSize(4);
            $points_inp->setMinValue(0);
            $points_inp->setMinvalueShouldBeGreater(false);
            $points_inp->setValue($lm_points);
            $form->addItem($points_inp);
        }
    }

    public function saveCorrectionsFormProperties(ilPropertyFormGUI $form): void
    {
        $correct_answers = $this->object->getCorrectAnswers();

        foreach ($this->object->getAnswers() as $lm_index => $lm) {
            $points_input = (float) str_replace(',', '.', $form->getInput('points_' . $lm_index));
            $correct_answers_input = (array) $form->getInput('longmenu_' . $lm_index . '_tags');

            foreach ($correct_answers_input as $idx => $answer) {
                if (in_array($answer, $lm)) {
                    continue;
                }

                unset($correct_answers_input[$idx]);
            }

            $correct_answers[$lm_index][0] = array_values($correct_answers_input);
            $correct_answers[$lm_index][1] = $points_input;
        }

        $this->object->setCorrectAnswers($correct_answers);
    }
}