<?php   
/**
 * functions/inc-cleanup.php
 * 
 * WP Head and other bloat cleanup
 * 
 * @author JJROD Framework
 * @see https://docs.jjrod.com
 * @version 1.0
 */

// Fire all our initial functions at the start
add_action('after_setup_theme','joints_start', 16);

function joints_start() {

    // launching operation cleanup
    add_action('init', 'joints_head_cleanup');

    // remove pesky injected css for recent comments widget
    add_filter( 'wp_head', 'joints_remove_wp_widget_recent_comments_style', 1 );

    // clean up comment styles in the head
    add_action('wp_head', 'joints_remove_recent_comments_style', 1);

    // clean up gallery output in wp
    add_filter('gallery_style', 'joints_gallery_style');

    // cleaning up excerpt
    add_filter('excerpt_more', 'joints_excerpt_more');

} /* end joints start */

//The default wordpress head is a mess. Let's clean it up by removing all the junk we don't need.
function joints_head_cleanup() {
    // Remove category feeds
    // remove_action( 'wp_head', 'feed_links_extra', 3 );
    // Remove post and comment feeds
    // remove_action( 'wp_head', 'feed_links', 2 );
    // Remove EditURI link
    remove_action( 'wp_head', 'rsd_link' );
    // Remove Windows live writer
    remove_action( 'wp_head', 'wlwmanifest_link' );
    // Remove index link
    remove_action( 'wp_head', 'index_rel_link' );
    // Remove previous link
    remove_action( 'wp_head', 'parent_post_rel_link', 10, 0 );
    // Remove start link
    remove_action( 'wp_head', 'start_post_rel_link', 10, 0 );
    // Remove links for adjacent posts
    remove_action( 'wp_head', 'adjacent_posts_rel_link_wp_head', 10, 0 );
    // Remove WP version
    remove_action( 'wp_head', 'wp_generator' );
} /* end Joints head cleanup */

// Remove injected CSS for recent comments widget
function joints_remove_wp_widget_recent_comments_style() {
   if ( has_filter('wp_head', 'wp_widget_recent_comments_style') ) {
      remove_filter('wp_head', 'wp_widget_recent_comments_style' );
   }
}

/// Disable Jetpack CSS
add_filter( 'jetpack_implode_frontend_css', '__return_false', 99 );

// Remove injected CSS from recent comments widget
function joints_remove_recent_comments_style() {
  global $wp_widget_factory;
  if (isset($wp_widget_factory->widgets['WP_Widget_Recent_Comments'])) {
    remove_action('wp_head', array($wp_widget_factory->widgets['WP_Widget_Recent_Comments'], 'recent_comments_style'));
  }
}

// Remove injected CSS from gallery
function joints_gallery_style($css) {
  return preg_replace("!<style type='text/css'>(.*?)</style>!s", '', $css);
}

// This removes the annoying […] to a Read More link
function joints_excerpt_more($more) {
    global $post;
    // edit here if you like
return ' <a class="excerpt-read-more" href="'. get_permalink($post->ID) . '" title="'. __('Read', 'jointswp') . get_the_title($post->ID).'">'. __('Read more »', 'jointswp') .'</a>';
}

//  Stop WordPress from using the sticky class (which conflicts with Foundation), and style WordPress sticky posts using the .wp-sticky class instead
function remove_sticky_class($classes) {
    if(in_array('sticky', $classes)) {
        $classes = array_diff($classes, array("sticky"));
        $classes[] = 'wp-sticky';
    }

    return $classes;
}
add_filter('post_class','remove_sticky_class');

//This is a modified the_author_posts_link() which just returns the link. This is necessary to allow usage of the usual l10n process with printf()
function joints_get_the_author_posts_link() {
    global $authordata;
    if ( !is_object( $authordata ) )
        return false;
    $link = sprintf(
        '<a href="%1$s" title="%2$s" rel="author">%3$s</a>',
        get_author_posts_url( $authordata->ID, $authordata->user_nicename ),
        esc_attr( sprintf( __( 'Posts by %s', 'jointswp' ), get_the_author() ) ), // No further l10n needed, core will take care of this one
        get_the_author()
    );
    return $link;
}


// This disables/removes all the Emoji bloat
function disable_wp_emoji() {

  // all actions related to emojis
  remove_action( 'admin_print_styles', 'print_emoji_styles' );
  remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
  remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
  remove_action( 'wp_print_styles', 'print_emoji_styles' );
  remove_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );
  remove_filter( 'the_content_feed', 'wp_staticize_emoji' );
  remove_filter( 'comment_text_rss', 'wp_staticize_emoji' );

  // filter to remove TinyMCE emojis
  add_filter( 'tiny_mce_plugins', 'disable_emoji_tinymce' );
  
  // filter to remove DNS prefetch
  add_filter( 'emoji_svg_url', '__return_false' );
}
add_action( 'init', 'disable_wp_emoji' );

function disable_emoji_tinymce( $plugins ) {
  if ( is_array( $plugins ) ) {
    return array_diff( $plugins, array( 'wpemoji' ) );
  } else {
    return array();
  }
}