/**
* Returns singletonian instance of this class.
*
* @return Ai1ec_Seo_Helper Singletonian instance of self
*/
public static function get_instance()
{
if (!self::$_instance instanceof Ai1ec_Seo_Helper) {
self::$_instance = new Ai1ec_Seo_Helper();
}
return self::$_instance;
}
/**
* Initializes the URL router used by our plugin.
*
* @return void Method is not intended to return anything
*/
public function initialize_router()
{
global $ai1ec_settings, $ai1ec_router, $ai1ec_localization_helper;
if (!isset($ai1ec_settings->calendar_page_id) || $ai1ec_settings->calendar_page_id < 1) {
// Routing may not be affected in any way if no calendar page exists.
return NULL;
}
$ai1ec_router = Ai1ec_Router::instance();
$page_base = '';
$clang = '';
if ($ai1ec_localization_helper->is_wpml_active()) {
$trans = $ai1ec_localization_helper->get_wpml_translations_of_page($ai1ec_settings->calendar_page_id, true);
$clang = $ai1ec_localization_helper->get_language();
if (isset($trans[$clang])) {
$ai1ec_settings->calendar_page_id = $trans[$clang];
}
}
$page_base = get_page_link($ai1ec_settings->calendar_page_id);
$page_base = Ai1ec_Wp_Uri_Helper::get_pagebase($page_base);
$page_link = 'index.php?page_id=' . $ai1ec_settings->calendar_page_id;
$pagebase_for_href = Ai1ec_Wp_Uri_Helper::get_pagebase_for_links(get_page_link($ai1ec_settings->calendar_page_id), $clang);
// Add a trailing slash if it is missing and we are using permalinks.
if (Ai1ec_Meta::get_option('permalink_structure')) {
$pagebase_for_href = trailingslashit($pagebase_for_href);
}
// Set up the view factory.
Ai1ec_View_Factory::set_page($pagebase_for_href);
// If the calendar is set as the front page, disable permalinks.
// They would not be legal under a Windows server. See:
// https://issues.apache.org/bugzilla/show_bug.cgi?id=41441
if (Ai1ec_Meta::get_option('permalink_structure') && (int) get_option('page_on_front') !== (int) $ai1ec_settings->calendar_page_id) {
Ai1ec_View_Factory::set_pretty_permalinks_enabled(true);
}
// If we are requesting the calendar page and we have a saved cookie,
// redirect the user. Do not redirect if the user saved the home page,
// otherwise we enter a loop.
$cookie_dto = $ai1ec_router->get_cookie_set_dto();
if (true === $cookie_dto->get_is_cookie_set_for_calendar_page()) {
$cookie = $cookie_dto->get_calendar_cookie();
$href = Ai1ec_View_Factory::create_href_helper_instance($cookie);
// wp_redirect sanitizes the url which strips out the |
header('Location: ' . $href->generate_href(), true, '302');
exit(0);
}
// We need to reset the cookie, it's to early for the is_page() call
$ai1ec_router->set_cookie_set_dto();
// Initialize SEO helper.
Ai1ec_Seo_Helper::get_instance();
$ai1ec_router = Ai1ec_Router::instance()->asset_base($page_base)->register_rewrite($page_link);
}