<?php
/**
 * Custom functions that act independently of the theme templates
 *
 * Eventually, some of the functionality here could be replaced by core features.
 *
 * @package SimpleGlassy
 */

// Exit if accessed directly.
defined( 'ABSPATH' ) || exit;

add_filter( 'body_class', 'simpleglassy_body_classes' );

if ( ! function_exists( 'simpleglassy_body_classes' ) ) {
	/**
	 * Adds custom classes to the array of body classes.
	 *
	 * @param array $classes Classes for the body element.
	 *
	 * @return array
	 */
	function simpleglassy_body_classes( $classes ) {
		// Fix long non-breaking texts
		$classes[] = 'text-break';
		// Adds a class of group-blog to blogs with more than 1 published author.
		if ( is_multi_author() ) {
			$classes[] = 'group-blog';
		}
		// Adds a class of hfeed to non-singular pages.
		if ( ! is_singular() ) {
			$classes[] = 'hfeed';
		}
		return $classes;
	}
}

if ( function_exists( 'simpleglassy_adjust_body_class' ) ) {
	add_filter( 'body_class', 'simpleglassy_adjust_body_class' );
}

/**
 * Display navigation to next/previous post when applicable.
 */

if ( ! function_exists( 'simpleglassy_post_nav' ) ) {
	function simpleglassy_post_nav() {
		// Don't print empty markup if there's nowhere to navigate.
		$previous = ( is_attachment() ) ? get_post( get_post()->post_parent ) : get_adjacent_post( false, '', true );
		$next     = get_adjacent_post( false, '', false );

		if ( ! $next && ! $previous ) {
			return;
		}
		?>
		<nav class="container-fluid navigation post-navigation my-3 bg-glassy rounded">
			<h2 class="sr-only"><?php esc_html_e( 'Post navigation', 'simple-glassy' ); ?></h2>
			<div class="row nav-links">
				<?php
				if ( get_previous_post_link() ) {
					previous_post_link( '<div class="col py-2 pl-2 pr-1 nav-previous"><i class="sgicon sgicon-angle-double-left" aria-hidden="true"></i> %link</div>', _x( '%title', 'Previous post link', 'simple-glassy' ) );
				}
				if ( get_next_post_link() ) {
					next_post_link( '<div class="col py-2 pr-2 pl-1 nav-next text-right">%link <i class="sgicon sgicon-angle-double-right" aria-hidden="true"></i></div>', _x( '%title', 'Next post link', 'simple-glassy' ) );
				}
				?>
			</div><!-- .nav-links -->
		</nav><!-- .navigation -->
		<?php
	}
}

if ( ! function_exists( 'simpleglassy_pingback' ) ) {
	/**
	 * Add a pingback url auto-discovery header for single posts of any post type.
	 */
	function simpleglassy_pingback() {
		if ( is_singular() && pings_open() ) {
			echo '<link rel="pingback" href="' . esc_url( get_bloginfo( 'pingback_url' ) ) . '">' . "\n";
		}
	}
}
add_action( 'wp_head', 'simpleglassy_pingback' );

if ( ! function_exists( 'simpleglassy_mobile_web_app_meta' ) ) {
	/**
	 * Add mobile-web-app meta.
	 */
	function simpleglassy_mobile_web_app_meta() {
		echo '<meta name="mobile-web-app-capable" content="yes">' . "\n";
		echo '<meta name="apple-mobile-web-app-capable" content="yes">' . "\n";
		echo '<meta name="apple-mobile-web-app-title" content="' . esc_attr( get_bloginfo( 'name' ) ) . ' - ' . esc_attr( get_bloginfo( 'description' ) ) . '">' . "\n";
	}
}
add_action( 'wp_head', 'simpleglassy_mobile_web_app_meta' );

if ( ! function_exists( 'simpleglassy_default_body_attributes' ) ) {
	/**
	 * Adds schema markup to the body element.
	 *
	 * @param array $atts An associative array of attributes.
	 * @return array
	 */
	function simpleglassy_default_body_attributes( $atts ) {
		$atts['itemscope'] = '';
		$atts['itemtype']  = 'http://schema.org/WebSite';
		return $atts;
	}
}
add_filter( 'simpleglassy_body_attributes', 'simpleglassy_default_body_attributes' );

add_filter( 'the_password_form', 'simpleglassy_password_form' );
if ( ! function_exists( 'simpleglassy_password_form' ) ) {
	/**
	 * Customize input form of password protected page.
	 */
	function simpleglassy_password_form( $form = '' ) {
	    global $post;
	    $label = 'pwbox-'.( empty( $post->ID ) ? rand() : $post->ID );
	    $form = '<p>' . __( 'This content is password protected. To view it please enter the password below:', 'simple-glassy' ) . '</p>
	    <form action="' . esc_url( site_url( 'wp-login.php?action=postpass', 'login_post' ) ) . '" method="post" class="form-inline">
	    <label for="' . esc_attr( $label ) . '" class="sr-only">' . __( 'Password', 'simple-glassy' ) . '</label><input name="post_password" id="' . esc_attr( $label ) . '" placeholder="' . esc_attr__( 'Password', 'simple-glassy' ) . '" type="password" size="20" maxlength="20" class="form-control w-auto mr-1" /><input type="submit" name="Submit" value="' . esc_attr__( 'Submit', 'simple-glassy' ) . '" class="btn btn-primary" />
	    </form>
	    ';
	    return $form;
	}
}

function simpleglassy_custom_logo_output( $html ) {
	$html = str_replace( 'custom-logo-link', 'custom-logo-link mr-sm-3', $html );
	return $html;
}
add_filter( 'get_custom_logo', 'simpleglassy_custom_logo_output', 10 );

// Escapes all occurances of 'the_archive_description'.
add_filter( 'get_the_archive_description', 'simpleglassy_escape_the_archive_description' );

if ( ! function_exists( 'simpleglassy_escape_the_archive_description' ) ) {
	/**
	 * Escapes the description for an author or post type archive.
	 *
	 * @param string $description Archive description.
	 * @return string Maybe escaped $description.
	 */
	function simpleglassy_escape_the_archive_description( $description ) {
		if ( is_author() || is_post_type_archive() ) {
			return wp_kses_post( $description );
		}

		/*
		 * All other descriptions are retrieved via term_description() which returns
		 * a sanitized description.
		 */
		return $description;
	}
} // End of if function_exists( 'simpleglassy_escape_the_archive_description' ).

// Escapes all occurances of 'the_title()' and 'get_the_title()'.
add_filter( 'the_title', 'simpleglassy_kses_title' );

// Escapes all occurances of 'the_archive_title' and 'get_the_archive_title()'.
add_filter( 'get_the_archive_title', 'simpleglassy_kses_title' );

if ( ! function_exists( 'simpleglassy_kses_title' ) ) {
	/**
	 * Sanitizes data for allowed HTML tags for post title.
	 *
	 * @param string $data Post title to filter.
	 * @return string Filtered post title with allowed HTML tags and attributes intact.
	 */
	function simpleglassy_kses_title( $data ) {
		// Tags not supported in HTML5 are not allowed.
		$allowed_tags = array(
			'abbr'             => array(),
			'aria-describedby' => true,
			'aria-details'     => true,
			'aria-label'       => true,
			'aria-labelledby'  => true,
			'aria-hidden'      => true,
			'b'                => array(),
			'bdo'              => array(
				'dir' => true,
			),
			'blockquote'       => array(
				'cite'     => true,
				'lang'     => true,
				'xml:lang' => true,
			),
			'cite'             => array(
				'dir'  => true,
				'lang' => true,
			),
			'dfn'              => array(),
			'em'               => array(),
			'i'                => array(
				'aria-describedby' => true,
				'aria-details'     => true,
				'aria-label'       => true,
				'aria-labelledby'  => true,
				'aria-hidden'      => true,
				'class'            => true,
			),
			'code'             => array(),
			'del'              => array(
				'datetime' => true,
			),
			'ins'              => array(
				'datetime' => true,
				'cite'     => true,
			),
			'kbd'              => array(),
			'mark'             => array(),
			'pre'              => array(
				'width' => true,
			),
			'q'                => array(
				'cite' => true,
			),
			's'                => array(),
			'samp'             => array(),
			'span'             => array(
				'dir'      => true,
				'align'    => true,
				'lang'     => true,
				'xml:lang' => true,
			),
			'small'            => array(),
			'strong'           => array(),
			'sub'              => array(),
			'sup'              => array(),
			'u'                => array(),
			'var'              => array(),
		);
		$allowed_tags = apply_filters( 'simpleglassy_kses_title', $allowed_tags );

		return wp_kses( $data, $allowed_tags );
	}
} // End of if function_exists( 'simpleglassy_kses_title' ).