<?php
/* For licensing terms, see /license.txt */

use Chamilo\CoreBundle\Enums\ActionIcon;
use Chamilo\CoreBundle\Event\Events;
use Chamilo\CoreBundle\Event\ExerciseEndedEvent;
use Chamilo\CoreBundle\Framework\Container;
use ChamiloSession as Session;

/**
 * Exercise result
 * This script gets information from the script "exercise_submit.php",
 * through the session, and calculates the score of the student for
 * that exercise.
 * Then it shows the results on the screen.
 *
 * @author Olivier Brouckaert, main author
 * @author Roan Embrechts, some refactoring
 * @author Julio Montoya switchable fill in blank option added
 *
 * @todo    split more code up in functions, move functions to library?
 */
$debug = false;
require_once __DIR__.'/../inc/global.inc.php';

$current_course_tool = TOOL_QUIZ;
$this_section = SECTION_COURSES;

/* 	ACCESS RIGHTS  */
api_protect_course_script(true);

$origin = api_get_origin();

/** @var Exercise $objExercise */
if (empty($objExercise)) {
    $objExercise = Session::read('objExercise');
}

$exeId = isset($_REQUEST['exe_id']) ? (int) $_REQUEST['exe_id'] : 0;

if (empty($objExercise)) {
    // Redirect to the exercise overview
    // Check if the exe_id exists
    $objExercise = new Exercise();
    $exercise_stat_info = $objExercise->get_stat_track_exercise_info_by_exe_id($exeId);
    if (!empty($exercise_stat_info) && isset($exercise_stat_info['exe_exo_id'])) {
        header('Location: overview.php?exerciseId='.$exercise_stat_info['exe_exo_id'].'&'.api_get_cidreq());
        exit;
    }
    api_not_allowed(true);
}

if (api_is_in_gradebook()) {
    $interbreadcrumb[] = [
        'url' => Category::getUrl(),
        'name' => get_lang('Assessments'),
    ];
}

$nameTools = get_lang('Tests');
$currentUserId = api_get_user_id();

$interbreadcrumb[] = [
    'url' => 'exercise.php?'.api_get_cidreq(),
    'name' => get_lang('Tests'),
];

$htmlHeadXtra[] = '<link rel="stylesheet" href="'.api_get_path(WEB_LIBRARY_JS_PATH).'hotspot/css/hotspot.css">';
$htmlHeadXtra[] = '<script src="'.api_get_path(WEB_LIBRARY_JS_PATH).'hotspot/js/hotspot.js"></script>';
if ('true' === api_get_setting('exercise.quiz_prevent_copy_paste')) {
    $htmlHeadXtra[] = '<script src="'.api_get_path(WEB_LIBRARY_JS_PATH).'jquery.nocopypaste.js"></script>';
}

$showHeader = false;
$showFooter = false;
$showLearnPath = true;
$pageActions = '';
$pageTop = '';
$pageBottom = '';
$pageContent = '';

$courseInfo = api_get_course_info();
if (!in_array($origin, ['learnpath', 'embeddable', 'mobileapp'])) {
    // So we are not in learnpath tool
    $showHeader = true;
    $showLearnPath = false;
}

// I'm in a preview mode as course admin. Display the action menu.
if (api_is_course_admin() && !in_array($origin, ['learnpath', 'embeddable'])) {
    $pageActions = Display::toolbarAction(
        'exercise_result_actions',
        [
            Display::url(
                Display::getMdiIcon(ActionIcon::BACK, 'ch-tool-icon', null, ICON_SIZE_MEDIUM, get_lang('Go back to the questions list')),
                'admin.php?'.api_get_cidreq().'&exerciseId='.$objExercise->id
            )
            .Display::url(
                Display::getMdiIcon('cog', 'ch-tool-icon', null, ICON_SIZE_MEDIUM, get_lang('Edit test name and settings')),
                'exercise_admin.php?'.api_get_cidreq().'&modifyExercise=yes&exerciseId='.$objExercise->id
            ),
        ]
    );
}
$exercise_stat_info = $objExercise->get_stat_track_exercise_info_by_exe_id($exeId);
$learnpath_id = $exercise_stat_info['orig_lp_id'] ?? 0;
$learnpath_item_id = $exercise_stat_info['orig_lp_item_id'] ?? 0;
$learnpath_item_view_id = $exercise_stat_info['orig_lp_item_view_id'] ?? 0;

$logInfo = [
    'tool' => TOOL_QUIZ,
    'tool_id' => $objExercise->iId,
    'action' => $learnpath_id,
    'action_details' => $learnpath_id,
];
Event::registerLog($logInfo);

$allowSignature = ExerciseSignaturePlugin::exerciseHasSignatureActivated($objExercise);
if ($allowSignature) {
    $htmlHeadXtra[] = api_get_asset('signature_pad/signature_pad.umd.js');
}

if ('learnpath' === $origin) {
    $pageTop .= '
        <form method="GET" action="exercise.php?'.api_get_cidreq().'">
            <input type="hidden" name="origin" value='.$origin.'/>
            <input type="hidden" name="learnpath_id" value="'.$learnpath_id.'"/>
            <input type="hidden" name="learnpath_item_id" value="'.$learnpath_item_id.'"/>
            <input type="hidden" name="learnpath_item_view_id" value="'.$learnpath_item_view_id.'"/>
    ';
}

$i = $total_score = $maxScore = 0;
$remainingMessage = '';
$attemptButton = '';

if ('embeddable' !== $origin) {
    $attemptButton = Display::toolbarButton(
        get_lang('Another attempt'),
        api_get_path(WEB_CODE_PATH).'exercise/overview.php?'.api_get_cidreq().'&'.http_build_query([
            'exerciseId' => $objExercise->id,
            'learnpath_id' => $learnpath_id,
            'learnpath_item_id' => $learnpath_item_id,
            'learnpath_item_view_id' => $learnpath_item_view_id,
        ]),
        'pencil',
        'info'
    );
}

// We check if the user attempts before sending to the exercise_result.php
$attempt_count = Event::get_attempt_count(
    $currentUserId,
    $objExercise->id,
    (int) $learnpath_id,
    (int) $learnpath_item_id,
    (int) $learnpath_item_view_id
);

if ($objExercise->selectAttempts() > 0) {
    if ($attempt_count >= $objExercise->selectAttempts()) {
        if (api_is_allowed_to_edit(true, true, true)) {
            Display::addFlash(
                Display::return_message(
                    sprintf(get_lang('You have reached the maximum number of attempts for this test. Being a trainer, you can go on practicing but your Results will not be reported.'), $objExercise->selectTitle(), $objExercise->selectAttempts()),
                'warning',
                false
                )
            );
        }

        if (!in_array($origin, ['learnpath', 'embeddable'])) {
            $showFooter = true;
        }

        $template = new Template($nameTools, $showHeader, $showFooter);
        $template->assign('actions', $pageActions);
        $template->display_one_col_template();
        exit;
    } else {
        $attempt_count++;
        $remainingAttempts = $objExercise->selectAttempts() - $attempt_count;
        if ($remainingAttempts) {
            $attemptMessage = sprintf(get_lang('Remaining %d attempts'), $remainingAttempts);
            $remainingMessage = sprintf('<p>%s</p> %s', $attemptMessage, $attemptButton);
        }
    }
} else {
    $remainingMessage = $attemptButton ? "<p>$attemptButton</p>" : '';
}

$total_score = 0;
if (!empty($exercise_stat_info)) {
    $total_score = $exercise_stat_info['score'];
}

$maxScore = $objExercise->getMaxScore();

if ('embeddable' === $origin) {
    $pageTop .= showEmbeddableFinishButton();
} else {
    Display::addFlash(
        Display::return_message(get_lang('Saved.'), 'normal', false)
    );
}

$saveResults = true;
$feedbackType = $objExercise->getFeedbackType();

ob_start();
$stats = ExerciseLib::displayQuestionListByAttempt(
    $objExercise,
    $exeId,
    $saveResults,
    $remainingMessage,
    $allowSignature,
    ('true' === api_get_setting('exercise.quiz_results_answers_report')),
    false
);
$pageContent .= ob_get_contents();
ob_end_clean();

// Change settings for teacher access.
$oldResultDisabled = $objExercise->results_disabled;
$objExercise->results_disabled = RESULT_DISABLE_SHOW_SCORE_AND_EXPECTED_ANSWERS;
$objExercise->forceShowExpectedChoiceColumn = true;
$objExercise->disableHideCorrectAnsweredQuestions = true;
ob_start();
$statsTeacher = ExerciseLib::displayQuestionListByAttempt(
    $objExercise,
    $exeId,
    false,
    $remainingMessage,
    $allowSignature,
    ('true' === api_get_setting('exercise.quiz_results_answers_report')),
    false
);
ob_end_clean();

// Restore settings.
$objExercise->results_disabled = $oldResultDisabled;
$objExercise->forceShowExpectedChoiceColumn = false;
$objExercise->disableHideCorrectAnsweredQuestions = false;

// Save here LP status
if (!empty($learnpath_id) && $saveResults) {
    // Save attempt in lp
    Exercise::saveExerciseInLp($learnpath_item_id, $exeId);
}

ExerciseLib::sendNotification(
    api_get_user_id(),
    $objExercise,
    $exercise_stat_info,
    $courseInfo,
    $attempt_count++,
    $stats,
    $statsTeacher
);

Container::getEventDispatcher()->dispatch(
    new ExerciseEndedEvent(['exe_id' => $exeId]),
    Events::EXERCISE_ENDED
);

//Unset session for clock time
ExerciseLib::exercise_time_control_delete(
    $objExercise->id,
    $learnpath_id,
    $learnpath_item_id
);

ExerciseLib::delete_chat_exercise_session($exeId);

if (!in_array($origin, ['learnpath', 'embeddable', 'mobileapp'])) {
    $pageBottom .= '<div class="question-return mb-4">';
    $pageBottom .= Display::url(
        get_lang('Return to Course Homepage'),
        api_get_course_url(),
        ['class' => 'btn btn--primary']
    );
    $pageBottom .= '</div>';

    if (api_is_allowed_to_session_edit()) {
        Exercise::cleanSessionVariables();
    }

    $showFooter = true;
} elseif (in_array($origin, ['embeddable', 'mobileapp'])) {
    if (api_is_allowed_to_session_edit()) {
        Exercise::cleanSessionVariables();
    }

    Session::write('attempt_remaining', $remainingMessage);
    $showFooter = false;
} else {
    $lp_mode = Session::read('lp_mode');
    $url = '../lp/lp_controller.php?'.api_get_cidreq().'&action=view&lp_id='.$learnpath_id
        .'&lp_item_id='.$learnpath_item_id.'&exeId='.$exeId
        .'&fb_type='.$objExercise->getFeedbackType().'#atoc_'.$learnpath_item_id;
    $href = 'fullscreen' === $lp_mode ? ' window.opener.location.href="'.$url.'" ' : ' top.location.href="'.$url.'"';

    if (api_is_allowed_to_session_edit()) {
        Exercise::cleanSessionVariables();
    }
    Session::write('attempt_remaining', $remainingMessage);

    // Record the results in the learning path, using the SCORM interface (API)
    $pageBottom .= "<script>window.parent.API.void_save_asset('$total_score', '$maxScore', 0, 'completed');</script>";

    $courseId = isset($_REQUEST['cid']) ? (int) $_REQUEST['cid'] : api_get_course_int_id();
    Exercise::saveExerciseInLp($learnpath_item_id, $exeId, $courseId);

    //$pageBottom .= '<script type="text/javascript">'.$href.'</script>';

    $showFooter = false;
}

$template = new Template($nameTools, $showHeader, $showFooter, $showLearnPath);
$template->assign('page_top', $pageTop);
$template->assign('page_content', $pageContent);
$template->assign('page_bottom', $pageBottom);
$template->assign('allow_signature', $allowSignature);
$template->assign('exe_id', $exeId);
$template->assign('actions', $pageActions);
$template->assign('content', $template->fetch($template->get_template('exercise/result.tpl')));
$template->display_one_col_template();

function showEmbeddableFinishButton()
{
    $js = '<script>
        $(function () {
            $(\'.btn-close-quiz\').on(\'click\', function () {
                window.parent.$(\'video:not(.skip), audio:not(.skip)\').get(0).play();
            });
        });
    </script>';

    $html = Display::tag(
        'p',
        Display::toolbarButton(
            get_lang('Go back to video'),
            '#',
            'undo',
            'warning',
            ['role' => 'button', 'class' => 'btn-close-quiz']
        ),
        ['class' => 'text-center']
    );

    return $js.PHP_EOL.$html;
}
