<?php

namespace WPFormsUserJourney\Integrations;

use WPFormsUserJourney\View;
use WPFormsUserJourney\DB;

/**
 * Zapier integration.
 *
 * @since 1.5.0
 */
class Zapier {

	/**
	 * View instance.
	 *
	 * @since 1.5.0
	 *
	 * @var View
	 */
	private $view;

	/**
	 * DB instance.
	 *
	 * @since 1.5.0
	 *
	 * @var DB
	 */
	private $db;

	/**
	 * Initialize.
	 *
	 * @since 1.5.0
	 *
	 * @param View $view View instance.
	 * @param DB   $db   DB instance.
	 */
	public function init( View $view, DB $db ): void {

		$this->view = $view;
		$this->db   = $db;

		$this->hooks();
	}

	/**
	 * Hooks.
	 *
	 * @since 1.5.0
	 */
	private function hooks(): void {

		add_filter( 'wpforms_zapier_process_entry_data_for_callback', [ $this, 'process_entry_data' ], 10, 2 );
		add_filter( 'wpforms_zapier_process_entry_data', [ $this, 'process_entry_data' ], 10, 2 );
		add_filter( 'wpforms_zapier_entry_available_fields', [ $this, 'add_entry_user_journey_field' ] );
	}

	/**
	 * Process entry data for Zapier integration.
	 *
	 * @since 1.5.0
	 *
	 * @param array $entry_data Entry data.
	 * @param int   $entry_id   Entry ID.
	 *
	 * @return array
	 */
	public function process_entry_data( array $entry_data, int $entry_id ): array {

		$entry_data['entry_user_journey'] = $this->get_user_journey_data( $entry_id );

		return $entry_data;
	}

	/**
	 * Get user journey data for an entry for Zapier integration.
	 *
	 * @since 1.5.0
	 *
	 * @param int $entry_id Entry ID.
	 *
	 * @return string
	 */
	private function get_user_journey_data( int $entry_id ): string {

		// Check if user journey addon is available.
		if ( ! function_exists( 'wpforms_user_journey' ) ) {
			return '';
		}

		$entry_obj = wpforms()->obj( 'entry' );
		$entry     = $entry_obj ? $entry_obj->get( $entry_id ) : null;

		if ( empty( $entry ) ) {
			return '';
		}

		$journey = $this->db->get_rows( [ 'entry_id' => $entry_id ] );

		if ( empty( $journey ) ) {
			return '';
		}

		$entry->user_journey = $journey;

		return $this->view->get_entry_journey_plain_text_urls_decoded( $entry );
	}

	/**
	 * Add the entry user journey field to the available fields.
	 *
	 * @since 1.5.0
	 *
	 * @param array $fields Available fields.
	 *
	 * @return array
	 */
	public function add_entry_user_journey_field( array $fields ): array {

		$fields[] = [
			'key'   => 'entry_user_journey',
			'label' => 'Entry User Journey', // Label not translatable as it is fetched by Zapier api.
			'type'  => 'unicode',
		];

		return $fields;
	}
}