Process Nested Entry Feed with Parent Entry Feed

<?php
/**
 * Gravity Perks // Nested Forms // Process Nested Entry Feed with Parent Entry Feed
 * https://gravitywiz.com/documentation/gravity-forms-nested-forms/
 *
 * Make Nested Entry feed processing process with Parent Entry feed processing.
 *
 * @todo
 *     - Make all parameters optional. Would allow this snippet to apply to any child feed for which a parent feed of the same type was present for any Gravity Flow step.
 */
class GPNF_GFlow_Delay_Child_Feed {
	public function __construct( $args = array() ) {

		$this->_args = wp_parse_args( $args, array(
			'form_id'         => false,
			'nested_field_id' => false,
			'step_id'         => false,
			'addon_slug'      => false,
		) );

		add_action( 'init', array( $this, 'init' ) );

	}
	public function init() {
		$hook = sprintf(
			'gpnf_should_process_%s_feed_%s_%s',
			str_replace( '_', '-', $this->_args['addon_slug'] ),
			$this->_args['form_id'],
			$this->_args['nested_field_id']
		);
		add_filter( $hook, array( $this, 'addon_should_process' ), 9, 6 );
		add_action( 'gravityflow_step_complete', array( $this, 'handle_gravityflow_step_completion' ), 10, 4 );
	}

	function addon_should_process( $should_process_feed, $feed, $context, $parent_form, $nested_form_field, $entry ) {
		// Disable immediate processing of add-on Feed for the nested entries.
		return false;
	}

	function handle_gravityflow_step_completion( $step_id, $entry_id, $form_id, $status ) {
		if ( $step_id == $this->_args['step_id'] && $status == 'complete' ) {
			// When add-on workflow step is complete on parent form.
			$entry       = GFAPI::get_entry( $entry_id );
			$parent_form = GFAPI::get_form( $form_id );

			// Get all nested entries.
			$nested_entries = array();
			foreach ( $parent_form['fields'] as $field ) {
				if ( $field instanceof GP_Field_Nested_Form ) {
					$_entries       = explode( ',', $entry[ $field->id ] );
					$nested_entries = array_merge( $nested_entries, $_entries );
				}
			}
			$nested_entries = array_unique( $nested_entries );

			// Process each nested entry.
			foreach ( $nested_entries as $nested_entry_id ) {
				$nested_entry = GFAPI::get_entry( $nested_entry_id );
				if ( empty( $nested_entry_id ) || empty( $nested_entry ) || is_wp_error( $nested_entry ) ) {
					continue;
				}
				$nested_form = GFAPI::get_form( $nested_entry['form_id'] );
				if ( ! function_exists( $this->_args['addon_slug'] ) ) {
					return;
				}
				$addon_instance = $this->_args['addon_slug']();
				$addon_instance->maybe_process_feed( $nested_entry, $nested_form );
				gf_feed_processor()->save()->dispatch();
			}
		}
	}
};


new GPNF_GFlow_Delay_Child_Feed( array(
	'form_id'         => 6, // Set this to the parent form ID
	'nested_field_id' => 4, // Set this to nested form field if (on parent form)
	'step_id'         => 6, // Set this to workflow step id on the feed (on parent form)
	'addon_slug'      => 'gp_google_sheets', // Set this to the slug of the addon we are working with (like, gp_google_sheets)
) );