functions.php

<?php
// Optional: change the WP-API prefix from wp-json, so it can work in parallel with the core API.
// Manually flush rewrite rules after changing this constant.
// https://github.com/WP-API/WP-API/issues/1007
define('WP_SOLIDUS_JSON_URL_PREFIX', 'wp-json');

$content_width = 90000;

// Enable redirects for post preview links
function getRedirect($postID) {
  // If bloodwater use bloodwater.org else drop subdomain
  $domain = preg_match('/bloodwater/',$_SERVER['SERVER_NAME'])?'bloodwater.org':preg_replace('/^(.*?)\.(.*)$/','$2', $_SERVER['SERVER_NAME']);
  // Add www unless there is already a subdomain
  $domain = preg_match('/^(.*)\.(.*)\.(.*)$/',$domain)?$domain:'www.'.$domain;

  if (!is_numeric($postID)) return 'http://'.$domain.$_SERVER["REQUEST_URI"];
  $post = get_post($postID);
  if ( is_user_logged_in() ) {
    $wp_json_nonce = wp_create_nonce('wp_json');
    $sample_permalink = get_sample_permalink($post->ID, $post->post_title);
    $permalink_pattern = parse_url($sample_permalink[0])['path'];
    $redirect_path = preg_replace("/%(.*)%/", $sample_permalink[1], $permalink_pattern); //Put the title slug into the permalink path
    $redirect_params = '?_wp_json_nonce='.$wp_json_nonce.'&is_preview=true&post_id='.$postID;
    return 'http://'.$domain.$redirect_path.$redirect_params;
  } else {
    $permalink = parse_url(get_permalink($post->ID));
    $redirect_path = $permalink['path'];
    return 'http://'.$domain.$redirect_path;
  }
}

function setup(){
  // Enable support for Post Thumbnails on posts and pages
  add_theme_support( 'post-thumbnails' );

  // Enable support for Post Formats
  add_theme_support( 'post-formats', array( 'image', 'quote', 'link', 'chat', 'audio', 'video' ) );
}

function register_media_taxonomies(){
  // Enable category/tag taxonomies for media attachments
  register_taxonomy_for_object_type( 'category', 'attachment' );
  register_taxonomy_for_object_type( 'post_tag', 'attachment' );
}

function add_markdown_support() {
  if (function_exists('jetpack_require_lib')) {
    jetpack_require_lib( 'markdown' );
  }
}

function goto_api_docs(){
  wp_redirect( 'http://wp-api.org' );
  exit;
}

function redirect_to_posts($url) {
  return '/wp-admin/edit.php';
}

function customize_menu(){
  remove_menu_page('index.php');
  remove_menu_page('edit-comments.php');
  remove_menu_page('themes.php');
  remove_menu_page('tools.php');
  remove_menu_page('edit.php?post_type=feedback');
  add_menu_page( 'API', 'API', 'activate_plugins', 'api', 'goto_api_docs', 'dashicons-admin-links', '20.1' );
}

// Add custom fields created by Types plugin to public types_custom_meta key
function add_types_custom_meta($data, $post, $context) {
  $types_custom_meta = array();

  if (function_exists('types_get_fields')) {
    // Toolset Types plugin
    $post_custom_data = get_post_custom( $post['ID'] );

    // Get a list of custom fields added by Types plugin
    $all_types_fields = types_get_fields();

    // Create a new array of custom field names
    $post_custom_types_fields = array();
    foreach ( $all_types_fields as $key => $value ) {
      $post_custom_types_fields[] = $value['meta_key'];
    }

    // Check each post_meta value on post to see if its in the list of Types custom fields
    foreach ( $post_custom_data as $key => $value ) {
      if ( in_array($key, $post_custom_types_fields) ) {
        $types_custom_meta[$key] = $value;
      }
    }
  } else if (function_exists('get_fields')) {
    // Advanced Custom Fields plugin, replicate the Toolset Types output
    $fields = get_fields( $post['ID'] );
    if ( $fields ) {
      foreach ( $fields as $key => $value ) {
        if ( $key == 'wpcf-retailers' || $key == 'wpcf-tracks' ) {
          $values = trim($value);
          if ($values) $values = preg_split("/\r\n|\n|\r/", $values);
          if ($values) {
            $types_custom_meta[$key] = $values;
          }
        } else if ( $key == 'wpcf-release_date' ) {
          $date = DateTime::createFromFormat('d/m/Y H:i:s', $value . ' 00:00:00', new DateTimeZone('UTC'));
          if ($date) {
            $types_custom_meta[$key] = array();
            $types_custom_meta[$key][] = (string) $date->getTimestamp();
          }
        } else if ($value) {
          $types_custom_meta[$key] = array();
          $types_custom_meta[$key][] = $value;
        }
      }
    }
  }

  // If there were any Types custom fields on this post, add them to the API response
  if ( !empty($types_custom_meta) ) {
    $data['types_custom_meta'] = $types_custom_meta;
  }

  return $data;
}

function parse_excerpt_markdown( $excerpt ) {
  if (class_exists('WPCom_Markdown')) {
    $excerpt = WPCom_Markdown::get_instance()->transform( $excerpt );
    $excerpt = stripslashes($excerpt);
    $excerpt = wpautop($excerpt);
    $excerpt = str_replace("\n", "", $excerpt);
  }
  return $excerpt;
}

add_action( 'init', 'register_media_taxonomies' );
add_action( 'init', 'add_markdown_support' );
add_action( 'after_setup_theme', 'setup' );
add_filter( 'login_redirect', 'redirect_to_posts' );
add_action( 'admin_menu', 'customize_menu', 999 );
add_filter( 'json_prepare_post', 'add_types_custom_meta', 10, 3 );
remove_filter( 'the_excerpt', 'wpautop' ); // Remove this and apply in parse_excerpt_markdown
add_filter( 'get_the_excerpt', 'parse_excerpt_markdown' );
add_filter( 'json_url_prefix', function( $prefix ) { return WP_SOLIDUS_JSON_URL_PREFIX; } );

if( class_exists( 'WpeCommon' ) ){
  require 'wpengine.php';
}