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

/**
 * @package chamilo.main
 */

use \ChamiloSession as Session;
define('CHAMILO_HOMEPAGE', true);

/* Flag forcing the 'current course' reset, as we're not inside a course anymore. */
// Maybe we should change this into an api function? an example: CourseManager::unset();
$cidReset = true;

require_once 'main/inc/global.inc.php';
require_once 'main/chat/chat_functions.lib.php';

// The section (for the tabs).
$this_section = SECTION_CAMPUS;

$header_title = null;
if (!api_is_anonymous()) {
    $header_title = " ";
}

$controller = new IndexManager($header_title);

//Actions
$loginFailed = isset($_GET['loginFailed']) ? true : isset($loginFailed);

if (!empty($_GET['logout'])) {
    $controller->logout();
}

/* Table definitions */

/* Constants and CONFIGURATION parameters */
/** @todo these configuration settings should move to the Chamilo config settings. */

/** Defines wether or not anonymous visitors can see a list of the courses on the Chamilo homepage that are open to the world. */
$_setting['display_courses_to_anonymous_users'] = 'true';

/* LOGIN */

/**
 * Registers in the track_e_default table (view in important activities in admin
 * interface) a possible attempted break in, sending auth data through get.
 * @todo This piece of code should probably move to local.inc.php where the actual login / logout procedure is handled. The real use of this code block should be seriously considered as well. This form should just use a security token and get done with it.
 */
if (isset($_GET['submitAuth']) && $_GET['submitAuth'] == 1) {
    $i = api_get_anonymous_id();
    Event::addEvent(
        LOG_ATTEMPTED_FORCED_LOGIN,
        'tried_hacking_get',
        $_SERVER['REMOTE_ADDR'].(empty($_POST['login'])?'':'/'.$_POST['login']),
        null,
        $i
    );
    echo 'Attempted breakin - sysadmins notified.';
    session_destroy();
    die();
}

// Delete session neccesary for legal terms
if (api_get_setting('allow_terms_conditions') == 'true') {
    unset($_SESSION['term_and_condition']);
}
//If we are not logged in and customapages activated
if (!api_get_user_id() && CustomPages::enabled()) {
    if (Request::get('loggedout')) {
        CustomPages::display(CustomPages::LOGGED_OUT);
    } else {
        CustomPages::display(CustomPages::INDEX_UNLOGGED);
    }
}

/**
 * @todo This piece of code should probably move to local.inc.php where the actual login procedure is handled.
 * @todo Check if this code is used. I think this code is never executed because after clicking the submit button
 *       the code does the stuff in local.inc.php and then redirects to index.php or user_portal.php depending
 *       on api_get_setting('page_after_login').
 */

if (!empty($_POST['submitAuth'])) {
    // The user has been already authenticated, we are now to find the last login of the user.
    if (isset ($_user['user_id'])) {
        $track_login_table      = Database :: get_main_table(TABLE_STATISTIC_TRACK_E_LOGIN);
        $sql_last_login = "SELECT UNIX_TIMESTAMP(login_date)
                                FROM $track_login_table
                                WHERE login_user_id = '".$_user['user_id']."'
                                ORDER BY login_date DESC LIMIT 1";
        $result_last_login = Database::query($sql_last_login);
        if (!$result_last_login) {
            if (Database::num_rows($result_last_login) > 0) {
                $user_last_login_datetime = Database::fetch_array($result_last_login);
                $user_last_login_datetime = $user_last_login_datetime[0];
                Session::write('user_last_login_datetime',$user_last_login_datetime);
            }
        }
        Database::free_result($result_last_login);

        //Event::event_login();
    }
    // End login -- if ($_POST['submitAuth'])
} else {
    // Only if login form was not sent because if the form is sent the user was already on the page.
    Event::event_open();
}

if (api_get_setting('display_categories_on_homepage') == 'true') {
    $controller->tpl->assign('course_category_block', $controller->return_courses_in_categories());
}

// Facebook connexion, if activated
if (api_is_facebook_auth_activated() && !api_get_user_id()) {
    facebook_connect();
}

$controller->set_login_form();

//@todo move this inside the IndexManager
if (!api_is_anonymous()) {
    $controller->tpl->assign('profile_block', $controller->return_profile_block());
    $controller->tpl->assign('user_image_block', $controller->return_user_image_block());

    if (api_is_platform_admin()) {
        $controller->tpl->assign('course_block', $controller->return_course_block());
    } else {
        $controller->tpl->assign('teacher_block', $controller->return_teacher_link());
    }
}

$hot_courses = null;
$announcements_block = null;


// 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);
    }
}

// When loading a chamilo page do not include the hot courses and news

if (!isset($_REQUEST['include'])) {
    if (api_get_setting('show_hot_courses') == 'true') {
        $hot_courses = $controller->return_hot_courses();
    }
    $announcements_block = $controller->return_announcements();
}

$controller->tpl->assign('hot_courses', $hot_courses);
$controller->tpl->assign('announcements_block', $announcements_block);
$controller->tpl->assign('home_page_block', $controller->return_home_page());
$controller->tpl->assign('navigation_course_links', $controller->return_navigation_links());
$controller->tpl->assign('notice_block', $controller->return_notice());
$controller->tpl->assign('main_navigation_block', $controller->return_navigation_links());
$controller->tpl->assign('help_block', $controller->return_help());

if (api_is_platform_admin() || api_is_drh()) {
    $controller->tpl->assign('skills_block', $controller->return_skills_links());
}

if (api_is_anonymous()) {
    $controller->tpl->setLoginBodyClass();
}

// direct login to course
if (isset($_GET['firstpage'])) {
    api_set_firstpage_parameter($_GET['firstpage']);
    // if we are already logged, go directly to course
    if (api_user_is_login()) {
        echo "<script type='text/javascript'>self.location.href='index.php?firstpage=".Security::remove_XSS($_GET['firstpage'])."'</script>";
    }
} else {
    api_delete_firstpage_parameter();
}

$controller->tpl->display_two_col_template();
