<?php

/**

 * Custom functions that act independently of the theme templates

 *

 * Eventually, some of the functionality here could be replaced by core features

 *

 * @package zerif

 */



/**

 * Get our wp_nav_menu() fallback, wp_page_menu(), to show a home link.

 *

 * @param array $args Configuration arguments.

 * @return array

 */

function zerif_page_menu_args( $args ) {

	$args['show_home'] = true;

	return $args;

}

add_filter( 'wp_page_menu_args', 'zerif_page_menu_args' );



/**

 * Adds custom classes to the array of body classes.

 *

 * @param array $classes Classes for the body element.

 * @return array

 */

function zerif_body_classes( $classes ) {

	// Adds a class of group-blog to blogs with more than 1 published author.

	if ( is_multi_author() ) {

		$classes[] = 'group-blog';

	}



	return $classes;

}

add_filter( 'body_class', 'zerif_body_classes' );



/**

 * Filters wp_title to print a neat <title> tag based on what is being viewed.

 *

 * @param string $title Default title text for current view.

 * @param string $sep Optional separator.

 * @return string The filtered title.

 */

function zerif_wp_title( $title, $sep ) {

	if ( is_feed() ) {

		return $title;

	}



	global $page, $paged;



	// Add the blog name

	$title .= get_bloginfo( 'name', 'display' );



	// Add the blog description for the home/front page.

	$site_description = get_bloginfo( 'description', 'display' );

	if ( $site_description && ( is_home() || is_front_page() ) ) {

		$title .= " $sep $site_description";

	}



	// Add a page number if necessary:

	if ( $paged >= 2 || $page >= 2 ) {

		$title .= " $sep " . sprintf( __( 'Page %s', 'zerif-lite' ), max( $paged, $page ) );

	}



	return $title;

}

add_filter( 'wp_title', 'zerif_wp_title', 10, 2 );



/**

 * Sets the authordata global when viewing an author archive.

 *

 * This provides backwards compatibility with

 * http://core.trac.wordpress.org/changeset/25574

 *

 * It removes the need to call the_post() and rewind_posts() in an author

 * template to print information about the author.

 *

 * @global WP_Query $wp_query WordPress Query object.

 * @return void

 */

function zerif_setup_author() {

	global $wp_query;



	if ( $wp_query->is_author() && isset( $wp_query->post ) ) {

		$GLOBALS['authordata'] = get_userdata( $wp_query->post->post_author );

	}

}

add_action( 'wp', 'zerif_setup_author' );