Add an image for the AppPresser media player

appp-media-images.php

<?php

/*
Plugin Name: AppPresser Media Images
Plugin URI: https://apppresser.com
Description: Automatically add media images on when a post is saved for posts that have a media url.
Version: 1.0
Author: AppPresser Team
Author URI: http://apppresser.com
License: GPLv2
*/

add_action('save_post', 'apppresser_add_media_image', 10, 3 );

function apppresser_add_media_image( $post_id, $post, $update ) {
  
  if( !class_exists('AppPresser') ) return;
  
  // Only set for posts that use the media feature
  $arr = appp_get_setting( 'media_post_types' );
	if( false === array_search( $post->post_type, $arr ) ) {
		return;
	}
  
  // (optional) you could also check for only posts that have the media url set
  if( get_post_meta( $post_id, 'appp_media_url', 1 ) === '' ) {
    return;
  }
  
  $featured_url = wp_get_attachment_url( get_post_thumbnail_id( $post_id ) );
  update_post_meta( $post_id, 'appp_media_image', $featured_url );
}