<?php

function cs_disable_caching_for_app() {

  // Define constants shared throughout many caching and performance plugins.

  if ( ! defined( 'DONOTCACHEPAGE' ) ) {
    define( 'DONOTCACHEPAGE', true );
  }

  if ( ! defined( 'DONOTMINIFY' ) ) {
    define( 'DONOTMINIFY', true );
  }

  if ( ! defined( 'DONOTCDN' ) ) {
    define( 'DONOTCDN', true );
  }

  // Outliers who don't use the constants
  add_filter( 'bwp_minify_is_loadable', '__return_false' );

  // Optionally Disable CloudFlare Rocket Loader. This should in most cases
  // already be avoided by the no-cache headers.
  if ( apply_filters( 'cornerstone_compat_cloudflare', false ) ) {
    add_filter( 'script_loader_tag', function($tag, $handle, $src) {
      return str_replace( "type='text/javascript'", "type='text/javascript' data-cfasync=\"false\"", $tag );
    }, 10, 3 );
  }
}

add_action( 'cornerstone_before_boot_app', 'cs_disable_caching_for_app' );
add_action( 'cornerstone_before_custom_endpoint', 'cs_disable_caching_for_app' );
add_action( 'cs_preview_frame_load', 'cs_disable_caching_for_app' );


add_action( 'cs_purge_cache', function() {

  //
  // WP Engine
  //

  if ( class_exists( 'WpeCommon' ) ) {
    if ( method_exists( 'WpeCommon', 'purge_memcached' ) ) {
      WpeCommon::purge_memcached();
    }
    if ( method_exists( 'WpeCommon', 'clear_maxcdn_cache' ) ) {
      WpeCommon::clear_maxcdn_cache();
    }
    if ( method_exists( 'WpeCommon', 'purge_varnish_cache' ) ) {
      WpeCommon::purge_varnish_cache();
    }
  }

  //
  // WP Object Cache
  //

  wp_cache_flush();
});