<?php

declare(strict_types=1);

namespace Agent001\Api\Order;

\defined( 'ABSPATH' ) || exit;

use WC_Order;

final class OrderResolver
{
    public function findByNumber( string $number ): ?WC_Order
    {
        if ( $number === '' ) {
            return null;
        }

        if ( ! \function_exists( 'wc_get_order' ) ) {
            return null;
        }

        if ( \ctype_digit( $number ) ) {
            $intId = (int) $number;
            if ( $intId > 0 ) {
                $byId = \wc_get_order( $intId );
                if ( $byId instanceof WC_Order && (int) $byId->get_id() === $intId ) {
                    return $byId;
                }
            }
        }

        if ( ! \function_exists( 'wc_get_orders' ) ) {
            return null;
        }

        $matches = \wc_get_orders(
            [
                'limit'      => 1,
                'return'     => 'objects',
                // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query -- single-row lookup with limit 1, indexed meta key.
                'meta_query' => [
                    [
                        'key'     => '_order_number',
                        'value'   => $number,
                        'compare' => '=',
                    ],
                ],
            ]
        );

        if ( ! is_array( $matches ) || ! isset( $matches[0] ) || ! ( $matches[0] instanceof WC_Order ) ) {
            return null;
        }

        $candidate = $matches[0];
        $actualMeta = (string) $candidate->get_meta( '_order_number', true );
        if ( $actualMeta === '' || $actualMeta !== $number ) {
            return null;
        }

        return $candidate;
    }

    public function emailMatches( WC_Order $order, string $email ): bool
    {
        $billing = (string) $order->get_billing_email();
        if ( $billing === '' ) {
            return false;
        }

        return strtolower( trim( $billing ) ) === strtolower( trim( $email ) );
    }
}