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

/**
 * This is the index file displayed when a user is logged in on Chamilo.
 *
 * It displays:
 * - personal course list
 * - menu bar
 * Search for CONFIGURATION parameters to modify settings
 * @package chamilo.main
 * @todo Shouldn't the CONFVAL_ constant be moved to the config page? Has anybody any idea what the are used for?
 *       If these are really configuration settings then we can add those to the dokeos config settings.
 * @todo check for duplication of functions with index.php (user_portal.php is orginally a copy of index.php)
 * @todo display_digest, shouldn't this be removed and be made into an extension?
 */

use ChamiloSession as Session;

/* Flag forcing the 'current course' reset, as we're not inside a course anymore */
$cidReset = true;

// For HTML editor repository.
if (isset($_SESSION['this_section']))
	unset($_SESSION['this_section']);

/* Included libraries */
require_once './main/inc/global.inc.php';

$this_section = SECTION_COURSES;

api_block_anonymous_users(); // Only users who are logged in can proceed.

$userId = api_get_user_id();

/* Constants and CONFIGURATION parameters */
$load_dirs = api_get_setting('show_documents_preview');
$displayMyCourseViewBySessionLink = api_get_setting('my_courses_view_by_session') === 'true';
$nameTools = get_lang('MyCourses');

/*
    Header
    Include the HTTP, HTML headers plus the top banner.
*/
if ($load_dirs) {
    $url = api_get_path(WEB_AJAX_PATH).'document.ajax.php?a=document_preview';
    $folder_icon = api_get_path(WEB_IMG_PATH).'icons/22/folder.png';
    $close_icon = api_get_path(WEB_IMG_PATH).'loading1.gif';

    $htmlHeadXtra[] =  '<script>
	$(document).ready(function() {
		$(".document_preview_container").hide();
		$(".document_preview").click(function() {
			var my_id = this.id;
			var course_id  = my_id.split("_")[2];
			var session_id = my_id.split("_")[3];

			//showing div
			$(".document_preview_container").hide();

			$("#document_result_" +course_id+"_" + session_id).show();

			//Loading
			var image = $("img", this);
			image.attr("src", "'.$close_icon.'");

			$.ajax({
				url: "'.$url.'",
				data: "course_id="+course_id+"&session_id="+session_id,
	            success: function(return_value) {
	            	image.attr("src", "'.$folder_icon.'");
	            	$("#document_result_" +course_id+"_" + session_id).html(return_value);
	            }
	        });

		});
	});
	</script>';
}
if ($displayMyCourseViewBySessionLink) {
    $htmlHeadXtra[] = '
    <script type="text/javascript">
        userId = ' . $userId . '
        $(document).ready(function() {
            changeMyCoursesView($.cookie("defaultMyCourseView"+userId));
        });

        /**
        * Keep in cookie the last teacher view for the My Courses Tab. default view, or view by session
        * @param inView
        */
        function changeMyCoursesView(inView)
        {
            $.cookie("defaultMyCourseView"+userId, inView, { expires: 365 });
            if (inView == ' . IndexManager::VIEW_BY_SESSION . ') {
                $("#viewBySession").addClass("btn-primary");
                $("#viewByDefault").removeClass("btn-primary");
            } else {
                $("#viewByDefault").addClass("btn-primary");
                $("#viewBySession").removeClass("btn-primary");
            }
        }
	</script>
';
}

$controller = new IndexManager(get_lang('MyCourses'));

// Main courses and session list
//$courseAndSessions = $controller->returnCoursesAndSessions($userId);

// Main courses and session list
if (isset($_COOKIE['defaultMyCourseView'.$userId]) &&
    $_COOKIE['defaultMyCourseView'.$userId] == IndexManager::VIEW_BY_SESSION && $displayMyCourseViewBySessionLink
) {
    $courseAndSessions = $controller->returnCoursesAndSessionsViewBySession($userId);
    IndexManager::setDefaultMyCourseView(IndexManager::VIEW_BY_SESSION, $userId);
} else {
    $courseAndSessions = $controller->returnCoursesAndSessions($userId);
    IndexManager::setDefaultMyCourseView(IndexManager::VIEW_BY_DEFAULT, $userId);
}

// if teacher, session coach or admin, display the button to change te course view

if ($displayMyCourseViewBySessionLink &&
    (api_is_drh() || api_is_course_coach() || api_is_platform_admin() || api_is_session_admin() || api_is_teacher())
) {
    $courseAndSessions['html'] = "<div class='view-by-session-link'>
		<div class='btn-group pull-right'>
		<a class='btn btn-default' id='viewByDefault' href='user_portal.php' onclick='changeMyCoursesView(\"".IndexManager::VIEW_BY_DEFAULT."\")'>
		".get_lang('MyCoursesDefaultView')."
		</a>
		<a class='btn btn-default' id='viewBySession' href='user_portal.php' onclick='changeMyCoursesView(\"".IndexManager::VIEW_BY_SESSION."\")'>
		".get_lang('MyCoursesSessionView')."
		</a>
		</div>
	</div><br /><br />
	".$courseAndSessions['html'];
}

// Check if a user is enrolled only in one course for going directly to the course after the login.
if (api_get_setting('go_to_course_after_login') == 'true') {
    $count_of_sessions = $courseAndSessions['session_count'];
    $count_of_courses_no_sessions = $courseAndSessions['course_count'];
    // User is subscribe in 1 session and 0 courses.
    if ($count_of_sessions == 1 && $count_of_courses_no_sessions == 0) {
        $sessions = SessionManager::get_sessions_by_user($userId);

        if (isset($sessions[0])) {
            $sessionInfo = $sessions[0];
            // Session only has 1 course.
            if (isset($sessionInfo['courses']) && count($sessionInfo['courses']) == 1) {
                $courseCode = $sessionInfo['courses'][0]['code'];
                $courseInfo = api_get_course_info_by_id($sessionInfo['courses'][0]['real_id']);
                $courseUrl = $courseInfo['course_public_url'] . '?id_session=' . $sessionInfo['session_id'];
                header('Location:' . $courseUrl);
                exit;
            }

            // Session has many courses.
            if (isset($sessionInfo['session_id'])) {
                $url = api_get_path(WEB_CODE_PATH) . 'session/?session_id=' . $sessionInfo['session_id'];

                header('Location:' . $url);
                exit;
            }
        }
    }

    // User is subscribed to 1 course.
    if (!isset($_SESSION['coursesAlreadyVisited']) &&
        $count_of_sessions == 0 && $count_of_courses_no_sessions == 1
    ) {
        $courses = CourseManager::get_courses_list_by_user_id($userId);

        if (!empty($courses) && isset($courses[0]) && isset($courses[0]['code'])) {
            $courseInfo = api_get_course_info_by_id($courses[0]['real_id']);
            if (!empty($courseInfo)) {
                $courseUrl = $courseInfo['course_public_url'];
                header('Location:' . $courseUrl);
                exit;
            }
        }
    }
}


//Show the chamilo mascot
if (empty($courseAndSessions['html']) && !isset($_GET['history'])) {
	$controller->tpl->assign('welcome_to_course_block', $controller->return_welcome_to_course_block());
}

$controller->tpl->assign('content', $courseAndSessions['html']);

if (api_get_setting('allow_browser_sniffer') == 'true') {
    if ($_SESSION['sniff_navigator'] != "checked") {
        $controller->tpl->assign('show_sniff', 1);
    } else {
        $controller->tpl->assign('show_sniff', 0);
    }
}

// Display the Site Use Cookie Warning Validation
$useCookieValidation = api_get_setting('cookie_warning');
if ($useCookieValidation === 'true') {
    if (isset($_POST['acceptCookies'])) {
        api_set_site_use_cookie_warning_cookie();
    } else {
        if (!api_site_use_cookie_warning_cookie_exist()) {
            if (Template::isToolBarDisplayedForUser()) {
                $controller->tpl->assign('toolBarDisplayed', true);
            } else {
                $controller->tpl->assign('toolBarDisplayed', false);
            }
            $controller->tpl->assign('displayCookieUsageWarning', true);
        }
    }
}

//check for flash and message
$sniff_notification = '';
$some_activex = isset($_SESSION['sniff_check_some_activex']) ? $_SESSION['sniff_check_some_activex'] : null;
$some_plugins = isset($_SESSION['sniff_check_some_plugins']) ? $_SESSION['sniff_check_some_plugins'] : null;

if (!empty($some_activex) || !empty($some_plugins)) {
    if (!preg_match("/flash_yes/", $some_activex) && !preg_match("/flash_yes/", $some_plugins)) {
        $sniff_notification = Display::return_message(get_lang('NoFlash'), 'warning', true);
        //js verification - To annoying of redirecting every time the page
        $controller->tpl->assign('sniff_notification', $sniff_notification);
    }
}

$controller->tpl->assign('profile_block', $controller->return_profile_block());
$controller->tpl->assign('user_image_block', $controller->return_user_image_block());
$controller->tpl->assign('course_block', $controller->return_course_block());
$controller->tpl->assign('navigation_course_links', $controller->return_navigation_links());
$controller->tpl->assign('search_block', $controller->return_search_block());
$controller->tpl->assign('classes_block', $controller->return_classes_block());
//if (api_is_platform_admin() || api_is_drh()) {
$controller->tpl->assign('skills_block', $controller->return_skills_links());
//}
$historyClass = '';
if (!empty($_GET['history'])) {
    $historyClass = 'courses-history';
}
$controller->tpl->assign('course_history_page', $historyClass);
$controller->tpl->display_two_col_template();

// Deleting the session_id.
Session::erase('session_id');
api_remove_in_gradebook('in_gradebook');
