Divi Dynamic Gallery - Custom Overlay Click Action

functions.php

function dpddg_image_overlay_action( $default_action, $props, $post_id ) {
	$click_action = get_post_meta($post_id, 'ddg_click_action', true);
	if(!empty($click_action)) {
		switch($click_action) {
			case 'none':
				return 'none';
			case 'custom_link':
				return 'link';
			case 'lightbox':
				return 'lightbox';
			case 'gallery':
				return 'gallery';
			case 'media_url':
				return 'url';
		}
	} else {
		return $default_action;
	}
}

add_filter( 'dpddg_image_overlay_action', 'dpddg_image_overlay_action', 10, 3 );