functions.php

<?php
/**
 * Jojo2016 functions and definitions.
 *
 * @link https://developer.wordpress.org/themes/basics/theme-functions/
 *
 * @package Jojo2016
 */

if ( ! function_exists( 'jojo2016_setup' ) ) :
	/**
	 * Sets up theme defaults and registers support for various WordPress features.
	 *
	 * Note that this function is hooked into the after_setup_theme hook, which
	 * runs before the init hook. The init hook is too late for some features, such
	 * as indicating support for post thumbnails.
	 */
	function jojo2016_setup() {
		/*
		 * Make theme available for translation.
		 * Translations can be filed in the /languages/ directory.
		 * If you're building a theme based on Jojo2016, use a find and replace
		 * to change 'jojo2016' to the name of your theme in all the template files.
		 */
		load_theme_textdomain( 'jojo2016', get_template_directory() . '/languages' );

		// Add default posts and comments RSS feed links to head.
		add_theme_support( 'automatic-feed-links' );

		/*
		 * Let WordPress manage the document title.
		 * By adding theme support, we declare that this theme does not use a
		 * hard-coded <title> tag in the document head, and expect WordPress to
		 * provide it for us.
		 */
		add_theme_support( 'title-tag' );

		/*
		 * Enable support for Post Thumbnails on posts and pages.
		 *
		 * @link https://developer.wordpress.org/themes/functionality/featured-images-post-thumbnails/
		 */
		add_theme_support( 'post-thumbnails' );

		// This theme uses wp_nav_menu() in one location.
		register_nav_menus( array(
			'primary' => esc_html__( 'Primary', 'jojo2016' ),
		) );

		/*
		 * Switch default core markup for search form, comment form, and comments
		 * to output valid HTML5.
		 */
		add_theme_support( 'html5', array(
			'search-form',
			'comment-form',
			'comment-list',
			'gallery',
			'caption',
		) );

		/*
		 * Enable support for Post Formats.
		 * See https://developer.wordpress.org/themes/functionality/post-formats/
		 */
		add_theme_support( 'post-formats', array(
			'aside',
			'image',
			'video',
			'quote',
			'link',
		) );

		// Set up the WordPress core custom background feature.
		add_theme_support( 'custom-background', apply_filters( 'jojo2016_custom_background_args', array(
			'default-color' => 'ffffff',
			'default-image' => '',
		) ) );

		// Add custom image sizes.
		add_image_size( 'square-500', 500, 500, true );
		add_image_size( 'square-750', 750, 750, true );

		/*
		 * Adds a second image meta box for custom Pinterest images.
		 *
		 * Requires the Multiple Post Thumbnails plugin by Chris Scott
		 * https://wordpress.org/plugins/multiple-post-thumbnails/
		 *
		 * @since 1.2.0
		 */
		if ( class_exists( 'MultiPostThumbnails' ) ) {
			new MultiPostThumbnails( array(
				'label' => 'Custom Pinterest Image',
				'id' => 'jojo-pinterest-image',
				'post_type' => 'post',
			) );
		}

	}
endif;
add_action( 'after_setup_theme', 'jojo2016_setup' );

if ( ! function_exists( 'jojo2016_content_width' ) ) :
	/**
	 * Set the content width in pixels, based on the theme's design and stylesheet.
	 *
	 * Priority 0 to make it available to lower priority callbacks.
	 *
	 * @global int $content_width
	 */
	function jojo2016_content_width() {
		$GLOBALS['content_width'] = apply_filters( 'jojo2016_content_width', 640 );
	}
endif;
add_action( 'after_setup_theme', 'jojo2016_content_width', 0 );


if ( ! function_exists( 'jojo2016_widgets_init' ) ) :
	/**
	 * Register widget area.
	 *
	 * @link https://developer.wordpress.org/themes/functionality/sidebars/#registering-a-sidebar
	 */
	function jojo2016_widgets_init() {
		register_sidebar( array(
			'name'					=> esc_html__( 'Sidebar', 'jojo2016' ),
			'id'						=> 'sidebar-1',
			'description'	 => '',
			'before_widget' => '<section id="%1$s" class="widget %2$s">',
			'after_widget'	=> '</section>',
			'before_title'	=> '<h2 class="widget-title">',
			'after_title'	 => '</h2>',
		) );
	}
endif;
add_action( 'widgets_init', 'jojo2016_widgets_init' );

if ( ! function_exists( 'jojo2016_scripts' ) ) :
	/**
	 * Enqueue scripts and styles.
	 */
	function jojo2016_scripts() {
		wp_enqueue_style( 'jojo2016-style', get_stylesheet_uri() );

		wp_enqueue_script( 'jojo2016-navigation', get_template_directory_uri() . '/assets/js/navigation.js', array(), '20151215', true );

		wp_enqueue_script( 'jojo2016-skip-link-focus-fix', get_template_directory_uri() . '/assets/js/skip-link-focus-fix.js', array(), '20151215', true );

		if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
			wp_enqueue_script( 'comment-reply' );
		}
	}
endif;
add_action( 'wp_enqueue_scripts', 'jojo2016_scripts' );

if ( ! function_exists( 'jojo_load_typekit' ) ) :
	/**
	 * Enqueue Typekit scripts
	 */
	function jojo_load_typekit() {
		?>
		<script src="https://use.typekit.net/rkf4jbu.js"></script>
		<script>try{Typekit.load({ async: true });}catch(e){}</script>
		<?php
	}
endif;
add_action( 'wp_head', 'jojo_load_typekit' );

/**
 * Filter the search form markup.
 */
function jojo2016_filter_search_form( $form ) {
	return preg_replace( '|placeholder="[^"]+"|', 'placeholder="Search Jojotastic"', $form );
}
add_filter( 'get_search_form', 'jojo2016_filter_search_form' );

/**
 * Filter the archive page title HTML.
 */
function jojo2016_filter_the_archive_title( $title ) {
	return preg_replace( '|: (.+)|', ': <span class="archive-title">$1</span>', $title );
}
add_filter( 'get_the_archive_title', 'jojo2016_filter_the_archive_title' );


function jojo2016_filter_excerpt_more() {
	global $post;

	return sprintf( '&hellip;  <a class="more-link" href="%s">More&nbsp;&rarr;</a>', esc_url( get_permalink( $post->ID ) ) );
}
add_filter( 'excerpt_more', 'jojo2016_filter_excerpt_more' );

function jojo2016_filter_content_width( $content_width ) {
	if ( is_single() && 'jetpack-portfolio' === get_post_type() ) {
		global $content_width;
		$content_width = 1072;
	}
}
add_action( 'template_redirect', 'jojo2016_filter_content_width' );

function jojo2016_filter_adjacent_post_link( $output, $format, $link, $post, $adjacent ) {
	// Bail early if this isnt' a portfolio of if there is no post.
	if ( ! isset( $post->post_type ) || 'jetpack-portfolio' !== $post->post_type ) {
		return $output;
	}

	$post_thumbnail = get_the_post_thumbnail( $post, 'thumbnail' );

	return preg_replace( '|<a ([^>]+)>(.+)<\/a>|', '<a class="adjacent-link-image" $1>' . $post_thumbnail . '</a><span class="adjacent-link-label">' . strtoupper( $adjacent ) . '<br><a $1>$2</a></span>', $output );
}

add_filter( 'previous_post_link', 'jojo2016_filter_adjacent_post_link', 10, 5 );
add_filter( 'next_post_link', 'jojo2016_filter_adjacent_post_link', 10, 5 );


// Disable the Featured Video Plus filter on sidebar items.
function jojo2016_remove_popular_posts_videos( $post_id, $post_thumbnail_id, $size ) {
	global $featured_video_plus;
	if ( ! is_null( $featured_video_plus ) && 'thumbnail' === $size ) {
		remove_filter( 'post_thumbnail_html', array( $featured_video_plus, 'filter_post_thumbnail' ), 99, 5 );
	}
}
add_action( 'begin_fetch_post_thumbnail_html', 'jojo2016_remove_popular_posts_videos', 10, 3 );

/**
 * Add a Mailchimp signup form to the end of posts.
 *
 * @since 1.1.0
 * @param string $content The pre-filtered content of a post.
 * @return string The content of a post.
 */
function jojo2016_add_mailchimp_signup_to_content( $content ) {
	if ( is_singular( 'post' ) && function_exists( 'mailchimpSF_signup_form' ) ) {
		// Turn on output buffering to catch the HTML.
		ob_start();
		?>
		<div class="mc-inline-signup block-large">
			<div class="mc-inline-signup-content">
				<h3 class="block-header mc-inline-signup-header">Find out first!</h3>
				<p class="block-text">Subscribe to our free newsletter for weekly updates &amp; exclusive content</p>
			</div>
			<?php mailchimpSF_signup_form(); ?>
		</div>
		<?php

		// Append the mailchimp block to the content and cleanup the buffer.
		$content .= ob_get_contents();
		ob_end_clean();
	}

	return $content;
}
add_filter( 'the_content', 'jojo2016_add_mailchimp_signup_to_content', 99 );

/**
 * Force redirection of joannahawley.com to jojotastic.com.
 *
 * @since 1.2.0
 */
function jojo2016_force_canonical_redirects() {
	if ( isset( $_SERVER['HTTP_HOST'] ) && 'joannahawley.com' === $_SERVER['HTTP_HOST'] ) {
		header( 'HTTP/1.1 301 Moved Permanently' );
		header( 'Location: http://jojotastic.com' );
		exit();
	}
}
add_action( 'init', 'jojo2016_force_canonical_redirects' );

/**
 * Filter the length of Public Preview Posts nonces.
 *
 * See: https://wordpress.org/plugins/public-post-preview/faq/
 *
 * @since 1.2.1
 */
function jojo2016_nonce_life() {
	return 60 * 60 * 24 * 30; // 30 days.
}
add_filter( 'ppp_nonce_life', 'jojo2016_nonce_life' );

/**
 * Implement the Custom Header feature.
 */
require get_template_directory() . '/inc/custom-header.php';

/**
 * Custom template tags for this theme.
 */
require get_template_directory() . '/inc/template-tags.php';

/**
 * Custom functions that act independently of the theme templates.
 */
require get_template_directory() . '/inc/extras.php';

/**
 * Customizer additions.
 */
require get_template_directory() . '/inc/customizer.php';

/**
 * Load Jetpack compatibility file.
 */
require get_template_directory() . '/inc/jetpack.php';

/**
 * Load Jetpack compatibility file.
 */
require get_template_directory() . '/inc/widgets.php';