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

use ChamiloSession as Session;
use Chamilo\CourseBundle\Entity\CTool;

// @todo refactor this script, create a class that manage the jqgrid requests
/**
 * Responses to AJAX calls
*/
$action = $_GET['a'];

switch ($action) {
    case 'set_visibility':
        require_once __DIR__.'/../global.inc.php';
        $course_id = api_get_course_int_id();
        $sessionId = api_get_session_id();
        // Allow tool visibility in sessions.
        $allowEditionInSession = api_get_configuration_value('allow_edit_tool_visibility_in_session');
        $em = Database::getManager();
        $repository = $em->getRepository('ChamiloCourseBundle:CTool');
        if (api_is_allowed_to_edit(null, true)) {
            $criteria = [
                'cId' => $course_id,
                'sessionId' => 0,
                'iid' => (int) $_GET['id']
            ];
            /** @var CTool $tool */
            $tool = $repository->findOneBy($criteria);
            $visibility = $tool->getVisibility();

            if ($allowEditionInSession && !empty($sessionId)) {
                $criteria = [
                    'cId' => $course_id,
                    'sessionId' => $sessionId,
                    'name' => $tool->getName()
                ];

                /** @var CTool $tool */
                $toolInSession = $repository->findOneBy($criteria);
                if ($toolInSession) {
                    // Use the session
                    $tool = $toolInSession;
                    $visibility = $toolInSession->getVisibility();
                } else {
                    // Creates new row in c_tool
                    $toolInSession = clone $tool;
                    $toolInSession->setIid(0);
                    $toolInSession->setId(0);
                    $toolInSession->setVisibility(0);
                    $toolInSession->setSessionId($session_id);
                    $em->persist($toolInSession);
                    $em->flush();
                    // Update id with iid
                    $toolInSession->setId($toolInSession->getIid());
                    $em->persist($toolInSession);
                    $em->flush();
                    // $tool will be updated later
                    $tool = $toolInSession;
                }
            }

            $toolImage = $tool->getImage();
            $customIcon = $tool->getCustomIcon();

            if (api_get_setting('homepage_view') != 'activity_big') {
                $toolImage = Display::return_icon(
                    $toolImage,
                    null,
                    null,
                    null,
                    null,
                    true
                );
                $inactiveImage = str_replace('.gif', '_na.gif', $toolImage);
            } else {
                // Display::return_icon() also checks in the app/Resources/public/css/themes/{theme}/icons folder
                $toolImage = (substr($toolImage, 0, strpos($toolImage, '.'))).'.png';
                $toolImage = Display::return_icon(
                    $toolImage,
                    get_lang(ucfirst($tool->getName())),
                    null,
                    ICON_SIZE_BIG,
                    null,
                    true
                );
                $inactiveImage = str_replace('.png', '_na.png', $toolImage);
            }

            if (isset($customIcon) && !empty($customIcon)) {
                $toolImage = CourseHome::getCustomWebIconPath().$customIcon;
                $inactiveImage = CourseHome::getCustomWebIconPath().CourseHome::getDisableIcon($customIcon);
            }

            $requested_image = $visibility == 0 ? $toolImage : $inactiveImage;
            $requested_class = $visibility == 0 ? '' : 'text-muted';
            $requested_message = $visibility == 0 ? 'is_active' : 'is_inactive';
            $requested_view = $visibility == 0 ? 'visible.png' : 'invisible.png';
            $requestedVisible = $visibility == 0 ? 1 : 0;
            $requested_view = $visibility == 0 ? 'visible.png' : 'invisible.png';
            $requestedVisible = $visibility == 0 ? 1 : 0;

            // HIDE AND REACTIVATE TOOL
            if ($_GET['id'] == strval(intval($_GET['id']))) {
                $tool->setVisibility($requestedVisible);
                $em->persist($tool);
                $em->flush();

                // Also hide the tool in all sessions
                if ($allowEditionInSession && $requestedVisible == 0 && empty($sessionId)) {
                    $criteria = [
                        'cId' => $course_id,
                        'name' => $tool->getName()
                    ];

                    /** @var CTool $toolItem */
                    $tools = $repository->findBy($criteria);
                    foreach ($tools as $toolItem) {
                        $toolSessionId = $toolItem->getSessionId();
                        if (!empty($toolSessionId)) {
                            $toolItem->setVisibility(0);
                            $em->persist($toolItem);
                        }
                    }
                    $em->flush();
                }
            }

            $response = array(
                'image' => $requested_image,
                'tclass' => $requested_class,
                'message' => $requested_message,
                'view' => $requested_view
            );
            echo json_encode($response);
        }
        break;
    case 'show_course_information':
        require_once __DIR__.'/../global.inc.php';

        // Get the name of the database course.
        $tbl_course_description = Database::get_course_table(TABLE_COURSE_DESCRIPTION);
        $course_info = api_get_course_info($_GET['code']);

        if (api_get_setting('course_catalog_hide_private') === 'true' &&
            $course_info['visibility'] == COURSE_VISIBILITY_REGISTERED
        ) {
            echo get_lang('PrivateAccess');
            break;
        }

        $sql = "SELECT * FROM $tbl_course_description
                WHERE c_id = ".$course_info['real_id']." AND session_id = 0
                ORDER BY id";
        $result = Database::query($sql);
        if (Database::num_rows($result) > 0) {
            while ($description = Database::fetch_object($result)) {
                $descriptions[$description->id] = $description;
            }
            // Function that displays the details of the course description in html.
            echo CourseManager::get_details_course_description_html(
                $descriptions,
                api_get_system_encoding(),
                false
            );
        } else {
            echo get_lang('NoDescription');
        }
        break;
    case 'session_courses_lp_default':
        /**
         * @todo this functions need to belong to a class or a special
         * wrapper to process the AJAX petitions from the jqgrid
         */
        require_once __DIR__.'/../global.inc.php';
        $now = time();
        $page  = intval($_REQUEST['page']); //page
        $limit = intval($_REQUEST['rows']); // quantity of rows
        //index to filter
        $sidx  = isset($_REQUEST['sidx']) && !empty($_REQUEST['sidx']) ? $_REQUEST['sidx'] : 'id';
        $sord  = $_REQUEST['sord']; //asc or desc
        if (!in_array($sord, array('asc', 'desc'))) {
            $sord = 'desc';
        }
        $session_id = intval($_REQUEST['session_id']);
        $course_id = intval($_REQUEST['course_id']);

        //Filter users that does not belong to the session
        if (!api_is_platform_admin()) {
            $new_session_list = UserManager::get_personal_session_course_list(api_get_user_id());
            $my_session_list = array();
            foreach ($new_session_list as $item) {
                if (!empty($item['session_id'])) {
                    $my_session_list[] = $item['session_id'];
                }
            }
            if (!in_array($session_id, $my_session_list)) {
                break;
            }
        }

        $start = $limit * $page - $limit;
        $course_list = SessionManager::get_course_list_by_session_id($session_id);
        $count = 0;
        $temp = array();
        foreach ($course_list as $item) {
            $list = new LearnpathList(api_get_user_id(), $item['code'], $session_id);
            $flat_list = $list->get_flat_list();
            $lps[$item['code']] = $flat_list;
            $course_url = api_get_path(WEB_COURSE_PATH).$item['directory'].'/?id_session='.$session_id;
            $item['title'] = Display::url($item['title'], $course_url, array('target' => SESSION_LINK_TARGET));

            foreach ($flat_list as $lp_id => $lp_item) {
                $temp[$count]['id'] = $lp_id;

                $lp = new learnpath($item['code'], $lp_id, api_get_user_id());
                if ($lp->progress_db == 100) {
                    continue;
                }

                $lp_url = api_get_path(WEB_CODE_PATH).'lp/lp_controller.php?cidReq='.$item['code'].'&id_session='.$session_id.'&lp_id='.$lp_id.'&action=view';

                $last_date = Tracking::get_last_connection_date_on_the_course(
                    api_get_user_id(),
                    $item,
                    $session_id,
                    false
                );

                if (empty($lp_item['modified_on'])) {
                    $lp_date = api_get_local_time($lp_item['created_on']);
                    $image = 'new.gif';
                    $label = get_lang('LearnpathAdded');
                } else {
                    $lp_date = api_get_local_time($lp_item['modified_on']);
                    $image = 'moderator_star.png';
                    $label = get_lang('LearnpathUpdated');
                }

                $icons = '';
                if (strtotime($last_date) < strtotime($lp_date)) {
                    $icons = Display::return_icon($image, get_lang('TitleNotification').': '.$label.' - '.$lp_date);
                }

                if (!empty($lp_item['publicated_on'])) {
                    $date = substr($lp_item['publicated_on'], 0, 10);
                } else {
                    $date = '-';
                }

                // Checking LP publicated and expired_on dates
                if (!empty($lp_item['publicated_on'])) {
                    if ($now < api_strtotime($lp_item['publicated_on'], 'UTC')) {
                        continue;
                    }
                }

                if (!empty($lp_item['expired_on'])) {
                    if ($now > api_strtotime($lp_item['expired_on'], 'UTC')) {
                        continue;
                    }
                }

                $temp[$count]['cell'] = array(
                    $date,
                    $item['title'],
                    Display::url($icons.' '.$lp_item['lp_name'], $lp_url, array('target'=>SESSION_LINK_TARGET))
                );
                $temp[$count]['course'] = strip_tags($item['title']);
                $temp[$count]['lp'] = $lp_item['lp_name'];
                $temp[$count]['date'] = $lp_item['publicated_on'];
                $count++;
            }
        }
        $temp = msort($temp, $sidx, $sord);

        $i = 0;
        $response = new stdClass();
        foreach ($temp as $key => $row) {
            $row = $row['cell'];
            if (!empty($row)) {
                if ($key >= $start && $key < ($start + $limit)) {
                    $response->rows[$i]['id'] = $key;
                    $response->rows[$i]['cell'] = array($row[0], $row[1], $row[2]);
                    $i++;
                }
            }
        }
        $total_pages = 0;
        if ($count > 0 && $limit > 0) {
            $total_pages = ceil($count / $limit);
        }
        $response->total = $total_pages;
        if ($page > $total_pages) {
            $response->page = $total_pages;
        } else {
            $response->page = $page;
        }
        $response->records = $count;
        echo json_encode($response);
        break;
    case 'session_courses_lp_by_week':
        require_once __DIR__.'/../global.inc.php';
        $now = time();
        $page = intval($_REQUEST['page']); //page
        $limit = intval($_REQUEST['rows']); // quantity of rows
        $sidx = isset($_REQUEST['sidx']) && !empty($_REQUEST['sidx']) ? $_REQUEST['sidx'] : 'course';
        $sidx = str_replace(array('week desc,', ' '), '', $sidx);
        $sord = $_REQUEST['sord']; //asc or desc
        if (!in_array($sord, array('asc', 'desc'))) {
            $sord = 'desc';
        }

        $session_id = intval($_REQUEST['session_id']);
        $course_id = intval($_REQUEST['course_id']);

        //Filter users that does not belong to the session
        if (!api_is_platform_admin()) {
            $new_session_list = UserManager::get_personal_session_course_list(api_get_user_id());
            $my_session_list = array();
            foreach ($new_session_list as $item) {
                if (!empty($item['session_id'])) {
                    $my_session_list[] = $item['session_id'];
                }
            }
            if (!in_array($session_id, $my_session_list)) {
                break;
            }
        }

        $start = $limit * $page - $limit;
        $course_list = SessionManager::get_course_list_by_session_id($session_id);

        $count = 0;
        $temp = array();
        foreach ($course_list as $item) {
            if (isset($course_id) && !empty($course_id)) {
                if ($course_id != $item['id']) {
                    continue;
                }
            }

            $list = new LearnpathList(
                api_get_user_id(),
                $item['code'],
                $session_id,
                'lp.publicatedOn DESC'
            );
            $flat_list = $list->get_flat_list();
            $lps[$item['code']] = $flat_list;
            $item['title'] = Display::url(
                $item['title'],
                api_get_path(WEB_COURSE_PATH).$item['directory'].'/?id_session='.$session_id,
                array('target' => SESSION_LINK_TARGET)
            );

            foreach ($flat_list as $lp_id => $lp_item) {
                $temp[$count]['id'] = $lp_id;
                $lp_url = api_get_path(WEB_CODE_PATH).'lp/lp_controller.php?cidReq='.$item['code'].'&id_session='.$session_id.'&lp_id='.$lp_id.'&action=view';

                $last_date = Tracking::get_last_connection_date_on_the_course(
                    api_get_user_id(),
                    $item,
                    $session_id,
                    false
                );

                if (empty($lp_item['modified_on'])) {
                    $lp_date = api_get_local_time($lp_item['created_on']);
                    $image = 'new.gif';
                    $label = get_lang('LearnpathAdded');
                } else {
                    $lp_date = api_get_local_time($lp_item['modified_on']);
                    $image = 'moderator_star.png';
                    $label = get_lang('LearnpathUpdated');
                }

                if (strtotime($last_date) < strtotime($lp_date)) {
                    $icons = Display::return_icon($image, get_lang('TitleNotification').': '.$label.' - '.$lp_date);
                }

                if (!empty($lp_item['publicated_on'])) {
                    $date = substr($lp_item['publicated_on'], 0, 10);
                } else {
                    $date = '-';
                }

                // Checking LP publicated and expired_on dates
                if (!empty($lp_item['publicated_on'])) {
                    $week_data = date('Y', api_strtotime($lp_item['publicated_on'], 'UTC')).' - '.get_week_from_day($lp_item['publicated_on']);
                    if ($now < api_strtotime($lp_item['publicated_on'], 'UTC')) {
                        continue;
                    }
                } else {
                    $week_data = '';
                }

                if (!empty($lp_item['expired_on'])) {
                    if ($now > api_strtotime($lp_item['expired_on'], 'UTC')) {
                        continue;
                    }
                }

                $temp[$count]['cell'] = array(
                    $week_data,
                    $date,
                    $item['title'],
                    Display::url($icons.' '.$lp_item['lp_name'], $lp_url, array('target' => SESSION_LINK_TARGET)),
                );
                $temp[$count]['course'] = strip_tags($item['title']);
                $temp[$count]['lp'] = $lp_item['lp_name'];
                $count++;
            }
        }

        if (!empty($sidx)) {
            $temp = msort($temp, $sidx, $sord);
        }

        $response = new stdClass();
        $i = 0;
        foreach ($temp as $key => $row) {
            $row = $row['cell'];
            if (!empty($row)) {
                if ($key >= $start && $key < ($start + $limit)) {
                    $response->rows[$i]['id'] = $key;
                    $response->rows[$i]['cell'] = array($row[0], $row[1], $row[2], $row[3]);
                    $i++;
                }
            }
        }
        $total_pages = 0;
        if ($count > 0 && $limit > 0) {
            $total_pages = ceil($count / $limit);
        }
        $response->total = $total_pages;
        if ($page > $total_pages) {
            $response->page = $total_pages;
        } else {
            $response->page = $page;
        }
        $response->records = $count;
        echo json_encode($response);
        break;
    case 'session_courses_lp_by_course':
        require_once __DIR__.'/../global.inc.php';
        $now = time();
        $page  = intval($_REQUEST['page']); //page
        $limit = intval($_REQUEST['rows']); // quantity of rows
        $sidx = isset($_REQUEST['sidx']) && !empty($_REQUEST['sidx']) ? $_REQUEST['sidx'] : 'id';
        $sidx = str_replace(array('course asc,', ' '), '', $sidx);

        $sord = $_REQUEST['sord']; //asc or desc
        if (!in_array($sord, array('asc', 'desc'))) {
            $sord = 'desc';
        }
        $session_id  = intval($_REQUEST['session_id']);
        $course_id   = intval($_REQUEST['course_id']);

        //Filter users that does not belong to the session
        if (!api_is_platform_admin()) {
            $new_session_list = UserManager::get_personal_session_course_list(api_get_user_id());
            $my_session_list = array();
            foreach ($new_session_list as $item) {
                if (!empty($item['session_id'])) {
                    $my_session_list[] = $item['session_id'];
                }
            }
            if (!in_array($session_id, $my_session_list)) {
                break;
            }
        }

        $start = $limit * $page - $limit;
        $course_list = SessionManager::get_course_list_by_session_id($session_id);
        $count = 0;

        foreach ($course_list as $item) {
            if (isset($course_id) && !empty($course_id)) {
                if ($course_id != $item['id']) {
                    continue;
                }
            }

            $list = new LearnpathList(
                api_get_user_id(),
                $item['code'],
                $session_id
            );
            $flat_list = $list->get_flat_list();
            $lps[$item['code']] = $flat_list;
            $item['title'] = Display::url(
                $item['title'],
                api_get_path(WEB_COURSE_PATH).$item['directory'].'/?id_session='.$session_id, array('target'=>SESSION_LINK_TARGET)
            );
            foreach ($flat_list as $lp_id => $lp_item) {
                $temp[$count]['id'] = $lp_id;
                $lp_url = api_get_path(WEB_CODE_PATH).'lp/lp_controller.php?cidReq='.$item['code'].'&id_session='.$session_id.'&lp_id='.$lp_id.'&action=view';
                $last_date = Tracking::get_last_connection_date_on_the_course(
                    api_get_user_id(),
                    $item,
                    $session_id,
                    false
                );
                if (empty($lp_item['modified_on'])) {
                    $lp_date = api_get_local_time($lp_item['created_on']);
                    $image = 'new.gif';
                    $label = get_lang('LearnpathAdded');
                } else {
                    $lp_date = api_get_local_time($lp_item['modified_on']);
                    $image = 'moderator_star.png';
                    $label = get_lang('LearnpathUpdated');
                }
                $icons = '';
                if (strtotime($last_date) < strtotime($lp_date)) {
                    $icons = Display::return_icon($image, get_lang('TitleNotification').': '.$label.' - '.$lp_date);
                }
                if (!empty($lp_item['publicated_on'])) {
                    $date = substr($lp_item['publicated_on'], 0, 10);
                } else {
                    $date = '-';
                }

                // Checking LP publicated and expired_on dates
                if (!empty($lp_item['publicated_on'])) {
                    if ($now < api_strtotime($lp_item['publicated_on'], 'UTC')) {
                        continue;
                    }
                }
                if (!empty($lp_item['expired_on'])) {
                    if ($now > api_strtotime($lp_item['expired_on'], 'UTC')) {
                        continue;
                    }
                }
                $temp[$count]['cell'] = array(
                    $date,
                    $item['title'],
                    Display::url($icons.' '.$lp_item['lp_name'], $lp_url, array('target'=>SESSION_LINK_TARGET))
                );
                $temp[$count]['course'] = strip_tags($item['title']);
                $temp[$count]['lp'] = $lp_item['lp_name'];
                $temp[$count]['date'] = $lp_item['publicated_on'];
                $count++;
            }
        }

        $temp = msort($temp, $sidx, $sord);
        $response = new stdClass();
        $i = 0;
        foreach ($temp as $key => $row) {
            $row = $row['cell'];
            if (!empty($row)) {
                if ($key >= $start && $key < ($start + $limit)) {
                    $response->rows[$i]['id'] = $key;
                    $response->rows[$i]['cell'] = array($row[0], $row[1], $row[2]);
                    $i++;
                }
            }
        }
        $total_pages = 0;
        if ($count > 0 && $limit > 0) {
            $total_pages = ceil($count / $limit);
        }
        $response->total = $total_pages;
        $response->page = $page;
        if ($page > $total_pages) {
            $response->page = $total_pages;
        }
        $response->records = $count;

        echo json_encode($response);
        break;
    case 'get_notification':
        $courseId = isset($_REQUEST['course_id']) ? (int) $_REQUEST['course_id'] : 0;
        $sessionId = isset($_REQUEST['session_id']) ? (int) $_REQUEST['session_id'] : 0;
        $status = isset($_REQUEST['status']) ? (int) $_REQUEST['status'] : 0;
        if (empty($courseId)) {
            break;
        }
        require_once __DIR__.'/../global.inc.php';

        $courseInfo = api_get_course_info_by_id($courseId);
        $courseInfo['id_session'] = $sessionId;
        $courseInfo['status'] = $status;

        $id = 'notification_'.$courseId.'_'.$sessionId.'_'.$status;

        $notificationId = Session::read($id);
        if ($notificationId) {
            echo Display::show_notification($courseInfo, false);
            Session::erase($notificationId);
        }

        break;
    default:
        echo '';

}
exit;