<?php

/**

 * Additional features to allow styling of the templates

 *

 * @package WordPress

 * @subpackage Twenty_Seventeen

 * @since 1.0

 */

/**

 * Adds custom classes to the array of body classes.

 *

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

 * @return array

 */

function twentyseventeen_body_classes( $classes ) {

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

	if ( is_multi_author() ) {

		$classes[] = 'group-blog';

	}

	// Add class of hfeed to non-singular pages.

	if ( ! is_singular() ) {

		$classes[] = 'hfeed';

	}

	// Add class if we're viewing the Customizer for easier styling of theme options.

	if ( is_customize_preview() ) {

		$classes[] = 'twentyseventeen-customizer';

	}

	// Add class on front page.

	if ( is_front_page() && 'posts' !== get_option( 'show_on_front' ) ) {

		$classes[] = 'twentyseventeen-front-page';

	}

	// Add a class if there is a custom header.

	if ( has_header_image() ) {

		$classes[] = 'has-header-image';

	}

	// Add class if sidebar is used.

	if ( is_active_sidebar( 'sidebar-1' ) && ! is_page() ) {

		$classes[] = 'has-sidebar';

	}

	// Add class for one or two column page layouts.

	if ( is_page() || is_archive() ) {

		if ( 'one-column' === get_theme_mod( 'page_layout' ) ) {

			$classes[] = 'page-one-column';

		} else {

			$classes[] = 'page-two-column';

		}

	}

	// Add class if the site title and tagline is hidden.

	if ( 'blank' === get_header_textcolor() ) {

		$classes[] = 'title-tagline-hidden';

	}

	// Get the colorscheme or the default if there isn't one.

	$colors = twentyseventeen_sanitize_colorscheme( get_theme_mod( 'colorscheme', 'light' ) );

	$classes[] = 'colors-' . $colors;

	return $classes;

}

add_filter( 'body_class', 'twentyseventeen_body_classes' );

/**

 * Count our number of active panels.

 *

 * Primarily used to see if we have any panels active, duh.

 */

function twentyseventeen_panel_count() {

	$panel_count = 0;

	/**

	 * Filter number of front page sections in Twenty Seventeen.

	 *

	 * @since Twenty Seventeen 1.0

	 *

	 * @param int $num_sections Number of front page sections.

	 */

	$num_sections = apply_filters( 'twentyseventeen_front_page_sections', 4 );

	// Create a setting and control for each of the sections available in the theme.

	for ( $i = 1; $i < ( 1 + $num_sections ); $i++ ) {

		if ( get_theme_mod( 'panel_' . $i ) ) {

			$panel_count++;

		}

	}

	return $panel_count;

}

/**

 * Checks to see if we're on the homepage or not.

 */

function twentyseventeen_is_frontpage() {

	return ( is_front_page() && ! is_home() );

}