<?php

declare(strict_types=1);

namespace Domain\Services;

use Domain\Models\Entities\Shop;
use Domain\Models\Entities\Shopper;
use Domain\Models\ValueObjects\Entities\ShopperId;
use Domain\Ports\Repositories\ShopperRepository;
use Domain\Ports\Repositories\ShopRepository;

class ShopperService
{
    public function __construct(
        private readonly ShopRepository $shopRepository,
        private readonly ShopperRepository $shopperRepository
    ) {
    }

    public function getShopperFor(ShopperId $shopperId): ?Shopper
    {
        return $this->shopperRepository->find($shopperId);
    }

    /**
     * Resolve the shop assigned to a customer through their employee record.
     *
     * Resolution order:
     *  1. Direct exception override (shop_employee_exception table)
     *  2. Site + service mapping   (shop_employees table, with service_code)
     *  3. Site-only mapping        (shop_employees table, service_code IS NULL)
     *  4. Default shop             (shops.default = true)
     */
    public function getShopFor(ShopperId $shopperId): ?Shop
    {
        $shopper = $this->getShopperFor($shopperId);

        return $shopper !== null ? $this->resolveShopForEmployee($shopper) : null;
    }

    public function resolveShopForEmployee(Shopper $shopper): Shop
    {
        // 1. Check for a direct exception override
        $exceptionShop = $this->shopRepository
            ->findExceptionShopFor($shopper->matricule);
        if ($exceptionShop !== null) {
            return $exceptionShop;
        }

        // 2. Try matching on site_code + service_code
        $serviceShop = $this->shopRepository
            ->findShopForSiteAndService($shopper->site, $shopper->service);
        if ($serviceShop !== null) {
            return $serviceShop;
        }

        // 3. Fall back to site_code only (service_code IS NULL)
        $siteShop = $this->shopRepository
            ->findShopForSiteAndService($shopper->site, null);
        if ($siteShop !== null) {
            return $siteShop;
        }

        // 4. Ultimate fallback: the default shop
        return $this->shopRepository->getDefaultShop();
    }

    public function canCustomerPassOrdersApp(ShopperId $shopperId): bool
    {
        return $this->getShopperFor($shopperId)?->isActive() ?? false;
    }
}