chamilo-lms/main/badge/issued.php

<?php
/* For licensing terms, see /license.txt */
/**
 * Show information about the issued badge
 * @author Angel Fernando Quiroz Campos <angel.quiroz@beeznest.com>
 * @package chamilo.badge
 */
require_once '../inc/global.inc.php';
require_once '../inc/lib/baker.lib.php';

$userId = isset($_GET['user']) ? intval($_GET['user']) : 0;
$skillId = isset($_GET['skill']) ? intval($_GET['skill']) : 0;

if (!isset($_GET['user'], $_GET['skill'])) {
    header('Location: ' . api_get_path(WEB_PATH));
    exit;
}

$entityManager = Database::getManager();
$user = $entityManager->find('ChamiloUserBundle:User', $_GET['user']);
$skill = $entityManager->find('ChamiloCoreBundle:Skill', $_GET['skill']);

if (!$user || !$skill) {
    Display::addFlash(
        Display::return_message(get_lang('NoResults'), 'error')
    );

    header('Location: ' . api_get_path(WEB_PATH));
    exit;
}

$skillUserRepo = $entityManager->getRepository('ChamiloCoreBundle:SkillRelUser');
$userSkills = $skillUserRepo->findBy([
    'userId' => $user->getId(),
    'skillId' => $skill->getId()
]);

if (!$userSkills) {
    Display::addFlash(
        Display::return_message(get_lang('TheUserXNotYetAchievedTheSkillX'), 'error')
    );

    header('Location: ' . api_get_path(WEB_PATH));
    exit;
}

$userInfo = [
    'id' => $user->getId(),
    'complete_name' => $user->getCompleteName()
];

$skillInfo = [
    'id' => $skill->getId(),
    'name' => $skill->getName(),
    'short_code' => $skill->getShortCode(),
    'description' => $skill->getDescription(),
    'criteria' => $skill->getCriteria(),
    'badge_image' => $skill->getWebIconPath(),
    'courses' => []
];



// Open Graph Markup
$htmlHeadXtra[] = "
    <meta property='og:type' content='article' />
    <meta property='og:title' content='".sprintf(get_lang('IHaveObtainedSkillXOnY'), $skillInfo['name'], api_get_setting('siteName'))."' />
    <meta property='og:url' content='".api_get_path(WEB_PATH)."badge/".$skillId."/user/".$userId."' />
    <meta property='og:description' content='".$skillInfo['description']."' />
    <meta property='og:image' content='".$skillInfo['badge_image']."' />
";

$badgeAssertions = [];

foreach ($userSkills as $userSkill) {
    $sessionId = 0;
    $course = $entityManager->find('ChamiloCoreBundle:Course', $userSkill->getCourseId());
    $courseName = $course ? $course->getTitle() : '';

    if ($userSkill->getSessionId()) {
        $session = $entityManager->find('ChamiloCoreBundle:Session', $userSkill->getSessionId());
        $sessionId = $session->getId();
        $courseName = "[{$session->getName()}] {$course->getTitle()}";
    }

    $userSkillDate = api_get_local_time($userSkill->getAcquiredSkillAt());
    $skillInfo['courses'][] = [
        'name' => $courseName,
        'date_issued' => api_format_date($userSkillDate, DATE_TIME_FORMAT_LONG)
    ];

    $assertionUrl = api_get_path(WEB_CODE_PATH) . "badge/assertion.php?";
    $assertionUrl .= http_build_query(array(
        'user' => $user->getId(),
        'skill' => $skill->getId(),
        'course' => $userSkill->getCourseId(),
        'session' => $userSkill->getSessionId()
    ));

    $badgeAssertions[] = $assertionUrl;
}

$allowExport = api_get_user_id() == $user->getId();

if ($allowExport) {
    $backpack = 'https://backpack.openbadges.org/';

    $configBackpack = api_get_setting('openbadges_backpack');

    if (strcmp($backpack, $configBackpack) !== 0) {
        $backpack = $configBackpack;
    }

    $htmlHeadXtra[] = '<script src="' . $backpack . 'issuer.js"></script>';
}
$objSkill = new Skill();
$skills = $objSkill->get($skillId);
$unbakedBadge = api_get_path(SYS_UPLOAD_PATH) . "badges/".$skills['icon'];

$unbakedBadge = file_get_contents($unbakedBadge);
$badgeInfoError = false;
$personalBadge = "";
$png = new PNGImageBaker($unbakedBadge);

if ($png->checkChunks("tEXt", "openbadges")) {
    $bakedInfo = $png->addChunk("tEXt", "openbadges", $assertionUrl);
    $bakedBadge = UserManager::getUserPathById($userId, "system");
    $bakedBadge = $bakedBadge.'badges';
    if (!file_exists($bakedBadge)) {
        mkdir($bakedBadge, api_get_permissions_for_new_directories(), true);
    }
    $skillRelUserId = $userSkills[0]->getId();
    if (!file_exists($bakedBadge . "/badge_" . $skillRelUserId)) {
        file_put_contents($bakedBadge . "/badge_" . $skillRelUserId . ".png", $bakedInfo);
    }
    
    //Process to validate a baked badge
    $badgeContent = file_get_contents($bakedBadge . "/badge_" . $skillRelUserId . ".png");
    $verifyBakedBadge = $png->extractBadgeInfo($badgeContent);
    if (!is_array($verifyBakedBadge)) {
        $badgeInfoError = true;
    }

    if (!$badgeInfoError) {
        $personalBadge = UserManager::getUserPathById($userId, "web");
        $personalBadge = $personalBadge."badges/badge_" . $skillRelUserId . ".png";  
    }
}

$template = new Template('');
$template->assign('skill_info', $skillInfo);
$template->assign('user_info', $userInfo);
$template->assign('allow_export', $allowExport);
$template->assign('badge_error', $badgeInfoError);
$template->assign('personal_badge', $personalBadge);

if ($allowExport) {
    $template->assign('assertions', $badgeAssertions);
}

$content = $template->fetch(
    $template->get_template('skill/issued.tpl')
);

$template->assign('header', get_lang('IssuedBadgeInformation'));
$template->assign('content', $content);
$template->display_one_col_template();