bp_core_no_access( array|string $args = '' )

function bp_core_no_access( $args = '' ) {

	// Build the redirect URL.
	$redirect_url  = is_ssl() ? 'https://' : 'http://';
	$redirect_url .= $_SERVER['HTTP_HOST'];
	$redirect_url .= $_SERVER['REQUEST_URI'];

	$defaults = array(
		'mode'     => 2,                    // 1 = $root, 2 = wp-login.php.
		'redirect' => $redirect_url,        // the URL you get redirected to when a user successfully logs in.
		'root'     => bp_get_root_domain(), // the landing page you get redirected to when a user doesn't have access.
		'message'  => __( 'Please login to access this website.', 'buddyboss' )
	);

	$r = wp_parse_args( $args, $defaults );

	/**
	 * Filters the arguments used for user redirecting when visiting access controlled areas.
	 *
	 * @since BuddyPress 1.6.0
	 *
	 * @param array $r Array of parsed arguments for redirect determination.
	 */
	$r = apply_filters( 'bp_core_no_access', $r );
	extract( $r, EXTR_SKIP );

	/*
	 * @ignore Ignore these filters and use 'bp_core_no_access' above.
	 */
	$mode     = apply_filters( 'bp_no_access_mode',     $mode,     $root,     $redirect, $message );
	$redirect = apply_filters( 'bp_no_access_redirect', $redirect, $root,     $message,  $mode    );
	$root     = apply_filters( 'bp_no_access_root',     $root,     $redirect, $message,  $mode    );
	$message  = apply_filters( 'bp_no_access_message',  $message,  $root,     $redirect, $mode    );
	$root     = trailingslashit( $root );

	switch ( $mode ) {

		// Option to redirect to wp-login.php.
		// Error message is displayed with bp_core_no_access_wp_login_error().
		case 2 :
			if ( !empty( $redirect ) ) {
				bp_core_redirect( add_query_arg( array(
					'bp-auth' => 1,
					'action'  => 'bpnoaccess'
				), wp_login_url( $redirect ) ) );
			} else {
				bp_core_redirect( $root );
			}

			break;

		// Redirect to root with "redirect_to" parameter.
		// Error message is displayed with bp_core_add_message().
		case 1 :
		default :

			$url = $root;
			if ( !empty( $redirect ) ) {
				$url = add_query_arg( 'redirect_to', urlencode( $redirect ), $root );
			}

			if ( !empty( $message ) ) {
				bp_core_add_message( $message, 'error' );
			}

			bp_core_redirect( $url );

			break;
	}
}