EE4 CSV Download additional functions

//* Add instructor name to EE4 CSV Download

add_filter( 'FHEE__EE_Export__report_registrations__reg_csv_array', 'espresso_add_author_to_report', 10, 2);
function espresso_add_author_to_report( $reg_csv_array, $reg_row ) {
	$event_id = $reg_row['Registration.EVT_ID'];
	$event = EEM_Event::instance()->get_one_by_ID( $event_id );
	if ( $event instanceof EE_Event ) {
		$post_author = get_post_field( 'post_author', $event_id );
		$author_info = get_userdata( $post_author );
		$reg_csv_array['Author'] = $author_info->last_name .  ", " . $author_info->first_name;
	}
	return $reg_csv_array;
}


// Add event categories to EE4 csv download

function ee_tw_event_categories_to_csv( $reg_csv_array, $reg_row ) {
	$EVT_ID = $reg_row[ 'Event_CPT.ID'];
 	$terms = array();
	$event_categories = get_the_terms( $EVT_ID, 'espresso_event_categories' );
	if ( $event_categories ) {
		foreach( $event_categories as $term ) {
			$terms[] = $term->name;
		}
		$terms = implode( ' ', $terms);
	}
	$reg_csv_array['Event Categories'] = !empty($terms) ? $terms : '';
	return $reg_csv_array;
	
}
add_filter( 'FHEE__EE_Export__report_registrations__reg_csv_array', 'ee_tw_event_categories_to_csv', 10, 2 );


//* Add language tags to the CSV Download

add_filter( 'FHEE__EE_Export__report_registrations__reg_csv_array', 'espresso_add_tag_to_report', 10, 2);
function espresso_add_tag_to_report( $reg_csv_array, $reg_row ) {
	$event_id = $reg_row['Registration.EVT_ID'];
	$event = EEM_Event::instance()->get_one_by_ID( $event_id );
	if ( $event instanceof EE_Event ) {
		$posttags = get_the_tags( $event_id );
		if ($posttags) {
			foreach($posttags as $tag) {
    			$reg_csv_array['Tag'] = $tag->name;
    			}
		}
	}		
	return $reg_csv_array;
}