<?php

namespace ChargeForms\Includes\Integrations;

use ChargeForms\Includes\Field_Sanitizer;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Shared "which submitted value is the email / first / last name" lookup —
 * originally private to Mailchimp_Integration, extracted once a second CRM
 * integration (Hubspot_Integration) needed the identical logic, same
 * reasoning Field_Sanitizer itself was pulled out of SubmissionHandler for.
 * ChargeForms has no dedicated first-name/last-name field type (see
 * fields/builtins.js — "Name" is a single text-like field), so splitting on
 * the first space is a practical heuristic every CRM integration here
 * shares, not a placeholder.
 */
class Contact_Field_Mapper {

	/** First Email-type field with a valid value, or '' if none. */
	public static function find_email( array $form, array $values ) {
		foreach ( Field_Sanitizer::flatten_submittable_fields( $form['fields'] ) as $field ) {
			if ( 'email' === $field['type'] && ! empty( $values[ $field['id'] ] ) && is_email( $values[ $field['id'] ] ) ) {
				return $values[ $field['id'] ];
			}
		}
		return '';
	}

	/** @return array{first: string, last: string}|array{} First Name-type field's value split on the first space, or [] if the form has none / it's empty. */
	public static function split_name( array $form, array $values ) {
		foreach ( Field_Sanitizer::flatten_submittable_fields( $form['fields'] ) as $field ) {
			if ( 'name' === $field['type'] && ! empty( $values[ $field['id'] ] ) ) {
				$parts = preg_split( '/\s+/', trim( (string) $values[ $field['id'] ] ), 2 );
				$name  = [ 'first' => $parts[0] ];
				if ( ! empty( $parts[1] ) ) {
					$name['last'] = $parts[1];
				}
				return $name;
			}
		}
		return [];
	}
}