<?php

namespace App\Services;

use Illuminate\Contracts\Auth\Authenticatable;
use Lunar\Models\Order;

/**
 * Attaches placed guest orders to an account when their billing email matches
 * the account's email. Only ever called right after the shopper has proved
 * they own that email (a login code, or the code confirming an email change),
 * which is what makes matching on email safe.
 *
 * Orders already belonging to any customer or user are never touched.
 */
class GuestOrderClaimer
{
    public function claim(Authenticatable $user): int
    {
        $customer = $user->latestCustomer();

        if (! $customer || ! $user->email) {
            return 0;
        }

        return Order::query()
            ->whereNotNull('placed_at')
            ->whereNull('customer_id')
            ->whereNull('user_id')
            ->whereHas('billingAddress', fn ($query) => $query
                ->whereRaw('lower(contact_email) = ?', [strtolower($user->email)]))
            ->update([
                'customer_id' => $customer->id,
                'user_id' => $user->id,
            ]);
    }
}