class.assKprimChoiceGUI.php

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<?php

class assKprimChoiceGUI extends assQuestionGUI implements ilGuiQuestionScoringAdjustable, ilGuiAnswerScoringAdjustable
{
    private bool $rebuild_thumbnails = false;

    public function __construct($qId = -1)
    {
        parent::__construct();

        $this->object = new assKprimChoice();

        if ($qId > 0) {
            $this->object->loadFromDb($qId);
        }
    }

    public function hasInlineFeedback(): bool
    {
        return $this->object->feedbackOBJ->isSpecificAnswerFeedbackAvailable($this->object->getId());
    }

    protected function getAdditionalEditQuestionCommands(): array
    {
        return ['uploadImage', 'removeImage'];
    }

    protected function editQuestion(ilPropertyFormGUI $form = null): void
    {
        if ($form === null) {
            $form = $this->buildEditForm();
        }

        $this->getQuestionTemplate();

        $this->tpl->setVariable("QUESTION_DATA", $this->ctrl->getHTML($form));
    }

    protected function uploadImage(): void
    {
        $result = $this->writePostData(true);

        if ($result == 0) {
            $this->object->saveToDb();
            $this->editQuestion();
        }
    }

    public function removeImage(): void
    {
        $position = key($_POST['cmd']['removeImage']);
        $this->object->removeAnswerImage($position);

        $this->object->saveToDb();
        $this->editQuestion();
    }

    public function downkprimanswers(): void
    {
        if (isset($_POST['cmd'][__FUNCTION__]) && count($_POST['cmd'][__FUNCTION__])) {
            $this->object->moveAnswerDown(key($_POST['cmd'][__FUNCTION__]));
            $this->object->saveToDb();
        }

        $this->editQuestion();
    }

    public function upkprimanswers(): void
    {
        if (isset($_POST['cmd'][__FUNCTION__]) && count($_POST['cmd'][__FUNCTION__])) {
            $this->object->moveAnswerUp(key($_POST['cmd'][__FUNCTION__]));
            $this->object->saveToDb();
        }

        $this->editQuestion();
    }

    protected function writePostData(bool $always = false): int
    {
        $form = $this->buildEditForm();
        $form->setValuesByPost();

        if ($always) {
            $answersInput = $form->getItemByPostVar('kprimanswers');
            $answersInput->setIgnoreMissingUploadsEnabled(true);

            if (!$answersInput->checkUploads($_POST[$answersInput->getPostVar()])) {
                $this->tpl->setOnScreenMessage('failure', $this->lng->txt("form_input_not_valid"));
                $this->editQuestion($form);
                return 1;
            }

            $answersInput->collectValidFiles();
        } elseif (!$form->checkInput()) {
            $this->editQuestion($form);
            return 1;
        }

        $this->writeQuestionGenericPostData();

        $this->writeQuestionSpecificPostData($form);
        $this->writeAnswerSpecificPostData($form);

        $this->saveTaxonomyAssignments();

        return 0;
    }

    protected function buildEditForm(): ilPropertyFormGUI
    {
        $form = $this->buildBasicEditFormObject();

        $this->addQuestionFormCommandButtons($form);

        $this->addBasicQuestionFormProperties($form);

        $this->populateQuestionSpecificFormPart($form);
        $this->populateAnswerSpecificFormPart($form);

        $this->populateTaxonomyFormSection($form);

        return $form;
    }

    public function populateQuestionSpecificFormPart(ilPropertyFormGUI $form): ilPropertyFormGUI
    {
        // shuffle answers
        $shuffleAnswers = new ilCheckboxInputGUI($this->lng->txt("shuffle_answers"), "shuffle_answers_enabled");
        $shuffleAnswers->setChecked($this->object->isShuffleAnswersEnabled());
        $form->addItem($shuffleAnswers);

        if (!$this->object->getSelfAssessmentEditingMode()) {
            // answer mode (single-/multi-line)
            $answerType = new ilSelectInputGUI($this->lng->txt('answer_types'), 'answer_type');
            $answerType->setOptions($this->object->getAnswerTypeSelectOptions($this->lng));
            $answerType->setValue($this->object->getAnswerType());
            $form->addItem($answerType);
        }

        if (!$this->object->getSelfAssessmentEditingMode() && $this->object->isSingleLineAnswerType($this->object->getAnswerType())) {
            // thumb size
            $thumb_size = new ilNumberInputGUI($this->lng->txt('thumb_size'), 'thumb_size');
            $thumb_size->setSuffix($this->lng->txt('thumb_size_unit_pixel'));
            $thumb_size->setInfo($this->lng->txt('thumb_size_info'));
            $thumb_size->setDecimals(false);
            $thumb_size->setMinValue($this->object->getMinimumThumbSize());
            $thumb_size->setMaxValue($this->object->getMaximumThumbSize());
            $thumb_size->setSize(6);
            $thumb_size->setValue($this->object->getThumbSize());
        } else {
            $thumb_size = new ilHiddenInputGUI('thumb_size');
            $thumb_size->setValue($this->object->getThumbSize());
        }
        $form->addItem($thumb_size);

        // option label
        $optionLabel = new ilRadioGroupInputGUI($this->lng->txt('option_label'), 'option_label');
        $optionLabel->setInfo($this->lng->txt('option_label_info'));
        $optionLabel->setRequired(true);
        $optionLabel->setValue($this->object->getOptionLabel());
        foreach ($this->object->getValidOptionLabelsTranslated($this->lng) as $labelValue => $labelText) {
            $option = new ilRadioOption($labelText, $labelValue);
            $optionLabel->addOption($option);

            if ($this->object->isCustomOptionLabel($labelValue)) {
                $customLabelTrue = new ilTextInputGUI(
                    $this->lng->txt('option_label_custom_true'),
                    'option_label_custom_true'
                );
                $customLabelTrue->setValue($this->object->getCustomTrueOptionLabel());
                $option->addSubItem($customLabelTrue);

                $customLabelFalse = new ilTextInputGUI(
                    $this->lng->txt('option_label_custom_false'),
                    'option_label_custom_false'
                );
                $customLabelFalse->setValue($this->object->getCustomFalseOptionLabel());
                $option->addSubItem($customLabelFalse);
            }
        }
        $form->addItem($optionLabel);

        // points
        $points = new ilNumberInputGUI($this->lng->txt('points'), 'points');
        $points->setRequired(true);
        $points->setSize(3);
        $points->allowDecimals(true);
        $points->setMinValue(0);
        $points->setMinvalueShouldBeGreater(true);
        $points->setValue($this->object->getPoints());
        $form->addItem($points);

        // score partial solution
        $scorePartialSolution = new ilCheckboxInputGUI($this->lng->txt('score_partsol_enabled'), 'score_partsol_enabled');
        $scorePartialSolution->setInfo($this->lng->txt('score_partsol_enabled_info'));
        $scorePartialSolution->setChecked($this->object->isScorePartialSolutionEnabled());
        $form->addItem($scorePartialSolution);

        return $form;
    }

    public function writeQuestionSpecificPostData(ilPropertyFormGUI $form): void
    {
        $old_answer_type = $this->object->getAnswerType();

        $this->object->setShuffleAnswersEnabled($form->getItemByPostVar('shuffle_answers_enabled')->getChecked());

        if (!$this->object->getSelfAssessmentEditingMode()) {
            $this->object->setAnswerType($form->getItemByPostVar('answer_type')->getValue());
        }

        if (!$this->object->getSelfAssessmentEditingMode() && $this->object->isSingleLineAnswerType($old_answer_type)) {
            $thumbsize = (int) ($form->getItemByPostVar('thumb_size')->getValue() ?? $this->object->getThumbSize());
            if ($thumbsize !== $this->object->getThumbSize()) {
                $this->object->setThumbSize($thumbsize);
                $this->rebuild_thumbnails = true;
            }
        }

        $this->object->setOptionLabel($form->getItemByPostVar('option_label')->getValue());

        if ($this->object->isCustomOptionLabel($this->object->getOptionLabel())) {
            $this->object->setCustomTrueOptionLabel(strip_tags(
                $form->getItemByPostVar('option_label_custom_true')->getValue()
            ));
            $this->object->setCustomFalseOptionLabel(strip_tags(
                $form->getItemByPostVar('option_label_custom_false')->getValue()
            ));
        }

        $this->object->setPoints($form->getItemByPostVar('points')->getValue());

        $this->object->setScorePartialSolutionEnabled($form->getItemByPostVar('score_partsol_enabled')->getChecked());
    }

    public function populateAnswerSpecificFormPart(ilPropertyFormGUI $form): ilPropertyFormGUI
    {
        $answers = new ilKprimChoiceWizardInputGUI($this->lng->txt('answers'), 'kprimanswers');
        $answers->setInfo($this->lng->txt('kprim_answers_info'));
        $answers->setSize(64);
        $answers->setRequired(true);
        $answers->setAllowMove(true);
        $answers->setQuestionObject($this->object);
        $answers->setSingleline($this->object->isSingleLineAnswerType($this->object->getAnswerType()));
        $answers->setValues($this->object->getAnswers());
        $form->addItem($answers);

        return $form;
    }

    public function writeAnswerSpecificPostData(ilPropertyFormGUI $form): void
    {
        $answers = $this->handleAnswerTextsSubmit(
            $form->getItemByPostVar('kprimanswers')->getValues()
        );
        $files = $form->getItemByPostVar('kprimanswers')->getFiles();

        $this->object->handleFileUploads($answers, $files);

        if ($this->rebuild_thumbnails) {
            $answers = $this->object->rebuildThumbnails(
                $this->object->getAnswerType(),
                $this->object->getThumbSize(),
                $this->object->getImagePath(),
                $answers
            );
        }

        $this->object->setAnswers($answers);
    }

    private function handleAnswerTextsSubmit($answers)
    {
        if ($this->object->getAnswerType() == assKprimChoice::ANSWER_TYPE_MULTI_LINE) {
            return $answers;
        }

        foreach ($answers as $key => $answer) {
            $answer->setAnswerText(ilUtil::secureString(htmlspecialchars($answer->getAnswerText())));
        }

        return $answers;
    }

    public function getSpecificFeedbackOutput(array $userSolution): string
    {
        return ''; // question type supports inline answer specific feedback
    }

    public function getTestOutput(
        $active_id,
        // hey: prevPassSolutions - will be always available from now on
        $pass,
        // hey.
        $is_postponed = false,
        $use_post_solutions = false,
        $showInlineFeedback = false
    ): string {
        // shuffle output
        $keys = $this->getParticipantsAnswerKeySequence();

        // get the solution of the user for the active pass or from the last pass if allowed
        $user_solution = [];
        if ($active_id) {
            $solutions = $this->object->getTestOutputSolutions($active_id, $pass);
            // hey.
            foreach ($solutions as $idx => $solution_value) {
                $user_solution[$solution_value["value1"]] = $solution_value["value2"];
            }
        }

        $template = new ilTemplate("tpl.il_as_qpl_mc_kprim_output.html", true, true, "Modules/TestQuestionPool");

        foreach ($keys as $answer_id) {
            $answer = $this->object->getAnswer($answer_id);
            if ($answer->getImageFile() !== null
                && $answer->getImageFile() !== '') {
                if ($this->object->getThumbSize()) {
                    $template->setCurrentBlock("preview");
                    $template->setVariable("URL_PREVIEW", $answer->getImageWebPath());
                    $template->setVariable("TEXT_PREVIEW", $this->lng->txt('preview'));
                    $template->setVariable("IMG_PREVIEW", ilUtil::getImagePath('media/enlarge.svg'));
                    $template->setVariable("ANSWER_IMAGE_URL", $answer->getThumbWebPath());
                    [$width, $height, $type, $attr] = getimagesize($answer->getImageFsPath());
                    $alt = $answer->getImageFile();
                    if (strlen($answer->getAnswertext())) {
                        $alt = $answer->getAnswertext();
                    }
                    $alt = preg_replace("/<[^>]*?>/", "", $alt);
                    $template->setVariable("ANSWER_IMAGE_ALT", ilLegacyFormElementsUtil::prepareFormOutput($alt));
                    $template->setVariable("ANSWER_IMAGE_TITLE", ilLegacyFormElementsUtil::prepareFormOutput($alt));
                    $template->parseCurrentBlock();
                } else {
                    $template->setCurrentBlock("answer_image");
                    $template->setVariable("ANSWER_IMAGE_URL", $answer->getImageWebPath());
                    [$width, $height, $type, $attr] = getimagesize($answer->getImageFsPath());
                    $alt = $answer->getImageFile();
                    if (strlen($answer->getAnswertext())) {
                        $alt = $answer->getAnswertext();
                    }
                    $alt = preg_replace("/<[^>]*?>/", "", $alt);
                    $template->setVariable("ATTR", $attr);
                    $template->setVariable("ANSWER_IMAGE_ALT", ilLegacyFormElementsUtil::prepareFormOutput($alt));
                    $template->setVariable("ANSWER_IMAGE_TITLE", ilLegacyFormElementsUtil::prepareFormOutput($alt));
                    $template->parseCurrentBlock();
                }
            }

            if ($showInlineFeedback) {
                $this->populateSpecificFeedbackInline($user_solution, $answer_id, $template);
            }

            $template->setCurrentBlock("answer_row");
            $template->setVariable("ANSWER_ID", $answer_id);
            $template->setVariable("ANSWER_TEXT", ilLegacyFormElementsUtil::prepareTextareaOutput($answer->getAnswertext(), true));
            $template->setVariable('VALUE_TRUE', 1);
            $template->setVariable('VALUE_FALSE', 0);

            if (isset($user_solution[$answer->getPosition()])) {
                $tplVar = $user_solution[$answer->getPosition()] ? 'CHECKED_ANSWER_TRUE' : 'CHECKED_ANSWER_FALSE';
                $template->setVariable($tplVar, " checked=\"checked\"");
            }

            $template->parseCurrentBlock();
        }

        $template->setVariable("QUESTIONTEXT", $this->object->getQuestionForHTMLOutput());
        $template->setVariable("INSTRUCTIONTEXT", $this->object->getInstructionTextTranslation(
            $this->lng,
            $this->object->getOptionLabel()
        ));

        $template->setVariable("OPTION_LABEL_TRUE", $this->object->getTrueOptionLabelTranslation(
            $this->lng,
            $this->object->getOptionLabel()
        ));

        $template->setVariable("OPTION_LABEL_FALSE", $this->object->getFalseOptionLabelTranslation(
            $this->lng,
            $this->object->getOptionLabel()
        ));

        $questionoutput = $template->get();
        $pageoutput = $this->outQuestionPage("", $is_postponed, $active_id, $questionoutput, $showInlineFeedback);
        return $pageoutput;
    }

    public function getPreview($show_question_only = false, $showInlineFeedback = false): string
    {
        $user_solution = is_object($this->getPreviewSession()) ? (array) $this->getPreviewSession()->getParticipantsSolution() : [];
        // shuffle output
        $keys = $this->getParticipantsAnswerKeySequence();

        $template = new ilTemplate("tpl.il_as_qpl_mc_kprim_output.html", true, true, "Modules/TestQuestionPool");

        foreach ($keys as $answer_id) {
            $answer = $this->object->getAnswer($answer_id);
            if ($answer->getImageFile() !== null
                && $answer->getImageFile() !== '') {
                if ($this->object->getThumbSize()) {
                    $template->setCurrentBlock("preview");
                    $template->setVariable("URL_PREVIEW", $answer->getImageWebPath());
                    $template->setVariable("TEXT_PREVIEW", $this->lng->txt('preview'));
                    $template->setVariable("IMG_PREVIEW", ilUtil::getImagePath('media/enlarge.svg'));
                    $template->setVariable("ANSWER_IMAGE_URL", $answer->getThumbWebPath());
                    [$width, $height, $type, $attr] = getimagesize($answer->getImageFsPath());
                    $alt = $answer->getImageFile();
                    if (strlen($answer->getAnswertext())) {
                        $alt = $answer->getAnswertext();
                    }
                    $alt = preg_replace("/<[^>]*?>/", "", $alt);
                    $template->setVariable("ANSWER_IMAGE_ALT", ilLegacyFormElementsUtil::prepareFormOutput($alt));
                    $template->setVariable("ANSWER_IMAGE_TITLE", ilLegacyFormElementsUtil::prepareFormOutput($alt));
                    $template->parseCurrentBlock();
                } else {
                    $template->setCurrentBlock("answer_image");
                    $template->setVariable("ANSWER_IMAGE_URL", $answer->getImageWebPath());
                    [$width, $height, $type, $attr] = getimagesize($answer->getImageFsPath());
                    $alt = $answer->getImageFile();
                    if (strlen($answer->getAnswertext())) {
                        $alt = $answer->getAnswertext();
                    }
                    $alt = preg_replace("/<[^>]*?>/", "", $alt);
                    $template->setVariable("ATTR", $attr);
                    $template->setVariable("ANSWER_IMAGE_ALT", ilLegacyFormElementsUtil::prepareFormOutput($alt));
                    $template->setVariable("ANSWER_IMAGE_TITLE", ilLegacyFormElementsUtil::prepareFormOutput($alt));
                    $template->parseCurrentBlock();
                }
            }

            if ($showInlineFeedback) {
                $this->populateSpecificFeedbackInline($user_solution, $answer_id, $template);
            }

            $template->setCurrentBlock("answer_row");
            $template->setVariable("ANSWER_ID", $answer_id);
            $template->setVariable("ANSWER_TEXT", ilLegacyFormElementsUtil::prepareTextareaOutput((string) $answer->getAnswertext(), true));
            $template->setVariable('VALUE_TRUE', 1);
            $template->setVariable('VALUE_FALSE', 0);

            if (isset($user_solution[$answer->getPosition()])) {
                $tplVar = $user_solution[$answer->getPosition()] ? 'CHECKED_ANSWER_TRUE' : 'CHECKED_ANSWER_FALSE';
                $template->setVariable($tplVar, " checked=\"checked\"");
            }

            $template->parseCurrentBlock();
        }
        $questiontext = $this->object->getQuestionForHTMLOutput();
        if ($showInlineFeedback && $this->hasInlineFeedback()) {
            $questiontext .= $this->buildFocusAnchorHtml();
        }
        $template->setVariable("QUESTIONTEXT", ilLegacyFormElementsUtil::prepareTextareaOutput($questiontext, true));

        $template->setVariable("INSTRUCTIONTEXT", $this->object->getInstructionTextTranslation(
            $this->lng,
            $this->object->getOptionLabel()
        ));

        $template->setVariable("OPTION_LABEL_TRUE", $this->object->getTrueOptionLabelTranslation(
            $this->lng,
            $this->object->getOptionLabel()
        ));

        $template->setVariable("OPTION_LABEL_FALSE", $this->object->getFalseOptionLabelTranslation(
            $this->lng,
            $this->object->getOptionLabel()
        ));

        $questionoutput = $template->get();
        if (!$show_question_only) {
            // get page object output
            $questionoutput = $this->getILIASPage($questionoutput);
        }
        return $questionoutput;
    }

    public function getSolutionOutput(
        $active_id,
        $pass = null,
        $graphicalOutput = false,
        $result_output = false,
        $show_question_only = true,
        $show_feedback = false,
        $show_correct_solution = false,
        $show_manual_scoring = false,
        $show_question_text = true
    ): string {
        $user_solution = [];

        if (($active_id > 0) && (!$show_correct_solution)) {
            $solutions = $this->object->getSolutionValues($active_id, $pass);
            foreach ($solutions as $idx => $solution_value) {
                $user_solution[] = [
                    'value1' => $solution_value['value1'],
                    'value2' => $solution_value['value2']
                ];
            }
        } else {
            // take the correct solution instead of the user solution
            foreach ($this->object->getAnswers() as $answer) {
                $user_solution[] = [
                    'value1' => $answer->getPosition(),
                    'value2' => $answer->getCorrectness()
                ];
            }
        }

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

    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_mc_kprim_output_solution.html", true, true, "Modules/TestQuestionPool");
        $keys = $this->getParticipantsAnswerKeySequence();
        foreach ($keys as $answer_id) {
            $answer = $this->object->getAnswer($answer_id);

            if (($active_id > 0) &&
                !$show_correct_solution &&
                $graphical_output) {
                $correctness_icon = $this->generateCorrectnessIconsForCorrectness(self::CORRECTNESS_NOT_OK);
                if (isset($user_solution[$answer->getPosition()]) && $user_solution[$answer->getPosition()] == $answer->getCorrectness()) {
                    $correctness_icon = $this->generateCorrectnessIconsForCorrectness(self::CORRECTNESS_OK);
                }
                $template->setCurrentBlock("icon_ok");
                $template->setVariable("ICON_OK", $correctness_icon);
                $template->parseCurrentBlock();
            }
            if ($answer->getImageFile() !== null
                && $answer->getImageFile() !== '') {
                $template->setCurrentBlock("answer_image");
                if ($this->object->getThumbSize()) {
                    $template->setVariable("ANSWER_IMAGE_URL", $answer->getThumbWebPath());
                } else {
                    $template->setVariable("ANSWER_IMAGE_URL", $answer->getImageWebPath());
                }

                $template->setVariable(
                    "ANSWER_IMAGE_ALT",
                    ilLegacyFormElementsUtil::prepareFormOutput(
                        $answer->getImageFile()
                    )
                );
                $template->setVariable(
                    "ANSWER_IMAGE_TITLE",
                    ilLegacyFormElementsUtil::prepareFormOutput(
                        $answer->getImageFile()
                    )
                );
                $template->parseCurrentBlock();
            }

            if ($show_feedback) {
                $this->populateSpecificFeedbackInline($user_solution, $answer_id, $template);
            }

            $template->setCurrentBlock("answer_row");
            $template->setVariable("ANSWER_TEXT", ilLegacyFormElementsUtil::prepareTextareaOutput($answer->getAnswertext(), true));

            if ($this->renderPurposeSupportsFormHtml() || $this->isRenderPurposePrintPdf()) {
                if (isset($user_solution[$answer->getPosition()])) {
                    if ($user_solution[$answer->getPosition()]) {
                        $template->setVariable("SOLUTION_IMAGE_TRUE", ilUtil::getHtmlPath(ilUtil::getImagePath("object/radiobutton_checked.png")));
                        $template->setVariable("SOLUTION_ALT_TRUE", $this->lng->txt("checked"));
                        $template->setVariable("SOLUTION_IMAGE_FALSE", ilUtil::getHtmlPath(ilUtil::getImagePath("object/radiobutton_unchecked.png")));
                        $template->setVariable("SOLUTION_ALT_FALSE", $this->lng->txt("unchecked"));
                    } else {
                        $template->setVariable("SOLUTION_IMAGE_TRUE", ilUtil::getHtmlPath(ilUtil::getImagePath("object/radiobutton_unchecked.png")));
                        $template->setVariable("SOLUTION_ALT_TRUE", $this->lng->txt("unchecked"));
                        $template->setVariable("SOLUTION_IMAGE_FALSE", ilUtil::getHtmlPath(ilUtil::getImagePath("object/radiobutton_checked.png")));
                        $template->setVariable("SOLUTION_ALT_FALSE", $this->lng->txt("checked"));
                    }
                } else {
                    $template->setVariable("SOLUTION_IMAGE_TRUE", ilUtil::getHtmlPath(ilUtil::getImagePath("object/radiobutton_unchecked.png")));
                    $template->setVariable("SOLUTION_ALT_TRUE", $this->lng->txt("unchecked"));
                    $template->setVariable("SOLUTION_IMAGE_FALSE", ilUtil::getHtmlPath(ilUtil::getImagePath("object/radiobutton_unchecked.png")));
                    $template->setVariable("SOLUTION_ALT_FALSE", $this->lng->txt("unchecked"));
                }
            } else {
                $template->setVariable('SOL_QID', $this->object->getId());
                $template->setVariable('SOL_SUFFIX', $show_correct_solution ? 'bestsolution' : 'usersolution');
                $template->setVariable('SOL_POSITION', $answer->getPosition());

                $template->setVariable('SOL_TRUE_VALUE', 1);
                $template->setVariable('SOL_FALSE_VALUE', 0);

                if (isset($user_solution[$answer->getPosition()])) {
                    if ($user_solution[$answer->getPosition()]) {
                        $template->setVariable('SOL_TRUE_CHECKED', 'checked');
                    } else {
                        $template->setVariable('SOL_FALSE_CHECKED', 'checked');
                    }
                }
            }

            $template->parseCurrentBlock();
        }

        if ($show_question_text == true) {
            $questiontext = $this->object->getQuestionForHTMLOutput();
            if ($show_feedback && $this->hasInlineFeedback()) {
                $questiontext .= $this->buildFocusAnchorHtml();
            }
            $template->setVariable("QUESTIONTEXT", ilLegacyFormElementsUtil::prepareTextareaOutput($questiontext, true));

            $template->setVariable("INSTRUCTIONTEXT", $this->object->getInstructionTextTranslation(
                $this->lng,
                $this->object->getOptionLabel()
            ));
        }

        $template->setVariable("OPTION_LABEL_TRUE", $this->object->getTrueOptionLabelTranslation(
            $this->lng,
            $this->object->getOptionLabel()
        ));

        $template->setVariable("OPTION_LABEL_FALSE", $this->object->getFalseOptionLabelTranslation(
            $this->lng,
            $this->object->getOptionLabel()
        ));


        $questionoutput = $template->get();
        $feedback = ($show_feedback && !$this->isTestPresentationContext()) ? $this->getGenericFeedbackOutput((int) $active_id, $pass) : "";

        $solutiontemplate = new ilTemplate("tpl.il_as_tst_solution_output.html", true, true, "Modules/TestQuestionPool");

        if (strlen($feedback)) {
            $cssClass = (
                $this->hasCorrectSolution($active_id, $pass) ?
                ilAssQuestionFeedback::CSS_CLASS_FEEDBACK_CORRECT : ilAssQuestionFeedback::CSS_CLASS_FEEDBACK_WRONG
            );

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

        $solutiontemplate->setVariable("SOLUTION_OUTPUT", $questionoutput);

        $solutionoutput = $solutiontemplate->get();

        if (!$show_question_only) {
            // get page object output
            $solutionoutput = $this->getILIASPage($solutionoutput);
        }
        return $solutionoutput;
    }

    protected function getParticipantsAnswerKeySequence()
    {
        $choice_keys = array_keys($this->object->getAnswers());

        if ($this->object->isShuffleAnswersEnabled()) {
            $choice_keys = $this->object->getShuffler()->transform($choice_keys);
        }

        return $choice_keys;
    }

    private function populateSpecificFeedbackInline($user_solution, $answer_id, $template): void
    {
        if ($this->object->getSpecificFeedbackSetting() == ilAssConfigurableMultiOptionQuestionFeedback::FEEDBACK_SETTING_CHECKED) {
            if (isset($user_solution[$answer_id])) {
                $fb = $this->object->feedbackOBJ->getSpecificAnswerFeedbackTestPresentation($this->object->getId(), 0, $answer_id);
                if (strlen($fb)) {
                    $template->setCurrentBlock("feedback");
                    $template->setVariable("FEEDBACK", ilLegacyFormElementsUtil::prepareTextareaOutput($fb, true));
                    $template->parseCurrentBlock();
                }
            }
        }

        if ($this->object->getSpecificFeedbackSetting() == ilAssConfigurableMultiOptionQuestionFeedback::FEEDBACK_SETTING_ALL) {
            $fb = $this->object->feedbackOBJ->getSpecificAnswerFeedbackTestPresentation($this->object->getId(), 0, $answer_id);
            if (strlen($fb)) {
                $template->setCurrentBlock("feedback");
                $template->setVariable("FEEDBACK", ilLegacyFormElementsUtil::prepareTextareaOutput($fb, true));
                $template->parseCurrentBlock();
            }
        }

        if ($this->object->getSpecificFeedbackSetting() == ilAssConfigurableMultiOptionQuestionFeedback::FEEDBACK_SETTING_CORRECT) {
            $answer = $this->object->getAnswer($answer_id);

            if ($answer->getCorrectness()) {
                $fb = $this->object->feedbackOBJ->getSpecificAnswerFeedbackTestPresentation($this->object->getId(), 0, $answer_id);
                if (strlen($fb)) {
                    $template->setCurrentBlock("feedback");
                    $template->setVariable("FEEDBACK", ilLegacyFormElementsUtil::prepareTextareaOutput($fb, true));
                    $template->parseCurrentBlock();
                }
            }
        }
    }

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

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

    public function getAggregatedAnswersView(array $relevant_answers): string
    {
        return  $this->renderAggregateView(
            $this->aggregateAnswers($relevant_answers, $this->object->getAnswers())
        )->get();

        return '<pre>' . print_r($relevant_answers, 1) . '</pre>';
    }

    public function renderAggregateView($aggregate): ilTemplate
    {
        $trueOptionLabel = $this->object->getTrueOptionLabelTranslation($this->lng, $this->object->getOptionLabel());
        $falseOptionLabel = $this->object->getFalseOptionLabelTranslation($this->lng, $this->object->getOptionLabel());

        $tpl = new ilTemplate('tpl.il_as_aggregated_kprim_answers_table.html', true, true, "Modules/TestQuestionPool");

        foreach ($aggregate as $lineData) {
            $tpl->setCurrentBlock('aggregaterow');
            $tpl->setVariable('OPTION', $lineData['answertext']);
            $tpl->setVariable('COUNT_TRUE', $lineData['count_true']);
            $tpl->setVariable('COUNT_FALSE', $lineData['count_false']);
            $tpl->parseCurrentBlock();
        }

        $tpl->setVariable('OPTION_HEAD', $this->lng->txt('answers'));
        $tpl->setVariable('COUNT_TRUE_HEAD', $trueOptionLabel);
        $tpl->setVariable('COUNT_FALSE_HEAD', $falseOptionLabel);

        return $tpl;
    }

    public function aggregateAnswers($rawSolutionData, $answers): array
    {
        $aggregate = [];

        foreach ($answers as $answer) {
            $answerAgg = [
                'answertext' => $answer->getAnswerText(), 'count_true' => 0, 'count_false' => 0
            ];

            foreach ($rawSolutionData as $solutionRecord) {
                if ($solutionRecord['value1'] == $answer->getPosition()) {
                    if ($solutionRecord['value2']) {
                        $answerAgg['count_true']++;
                    } else {
                        $answerAgg['count_false']++;
                    }
                }
            }

            $aggregate[] = $answerAgg;
        }

        return $aggregate;
    }

    public function getAnswersFrequency($relevantAnswers, $questionIndex): array
    {
        $agg = $this->aggregateAnswers($relevantAnswers, $this->object->getAnswers());

        $answers = [];

        foreach ($agg as $ans) {
            $answers[] = [
                'answer' => $ans['answertext'],
                'frequency_true' => $ans['count_true'],
                'frequency_false' => $ans['count_false']
            ];
        }

        return $answers;
    }

    public function getAnswerFrequencyTableGUI($parentGui, $parentCmd, $relevantAnswers, $questionIndex): ilAnswerFrequencyStatisticTableGUI
    {
        $table = new ilKprimChoiceAnswerFreqStatTableGUI($parentGui, $parentCmd, $this->object);
        $table->setQuestionIndex($questionIndex);
        $table->setData($this->getAnswersFrequency($relevantAnswers, $questionIndex));
        $table->initColumns();

        return $table;
    }

    public function populateCorrectionsFormProperties(ilPropertyFormGUI $form): void
    {
        // points
        $points = new ilNumberInputGUI($this->lng->txt('points'), 'points');
        $points->setRequired(true);
        $points->setSize(3);
        $points->allowDecimals(true);
        $points->setMinValue(0);
        $points->setMinvalueShouldBeGreater(true);
        $points->setValue($this->object->getPoints());
        $form->addItem($points);

        // score partial solution
        $scorePartialSolution = new ilCheckboxInputGUI($this->lng->txt('score_partsol_enabled'), 'score_partsol_enabled');
        $scorePartialSolution->setInfo($this->lng->txt('score_partsol_enabled_info'));
        $scorePartialSolution->setChecked($this->object->isScorePartialSolutionEnabled());
        $form->addItem($scorePartialSolution);

        // answers
        $kprimAnswers = new ilKprimChoiceCorrectionsInputGUI($this->lng->txt('answers'), 'kprimanswers');
        $kprimAnswers->setInfo($this->lng->txt('kprim_answers_info'));
        $kprimAnswers->setSize(64);
        $kprimAnswers->setMaxLength(1000);
        $kprimAnswers->setRequired(true);
        $kprimAnswers->setQuestionObject($this->object);
        $kprimAnswers->setValues($this->object->getAnswers());
        $form->addItem($kprimAnswers);
    }

    public function saveCorrectionsFormProperties(ilPropertyFormGUI $form): void
    {
        $this->object->setPoints(
            (float) str_replace(',', '.', $form->getInput('points'))
        );

        $this->object->setScorePartialSolutionEnabled(
            (bool) $form->getInput('score_partsol_enabled')
        );

        $this->object->setAnswers(
            $form->getItemByPostVar('kprimanswers')->getValues()
        );
    }
}