<?php
declare(strict_types=1);

namespace Esun\Catalog\Model\MixStepPricing;

use Magento\Framework\Exception\LocalizedException;
use Magento\Store\Model\StoreManagerInterface;

class WebsiteResolver
{
    private const WEBSITE_CODE_MAP = [
        'us' => 'us_site',
        'au' => 'au',
        'eu' => 'eu',
        'uk' => 'uk',
    ];

    private array $resolved = [];

    public function __construct(private readonly StoreManagerInterface $storeManager)
    {
    }

    /**
     * @throws LocalizedException
     */
    public function resolve(string $alias): array
    {
        if ($alias !== strtolower($alias) || !isset(self::WEBSITE_CODE_MAP[$alias])) {
            throw new LocalizedException(__('Website must be one of: us, au, eu, uk.'));
        }
        if (isset($this->resolved[$alias])) {
            return $this->resolved[$alias];
        }

        try {
            $website = $this->storeManager->getWebsite(self::WEBSITE_CODE_MAP[$alias]);
        } catch (\Throwable) {
            throw new LocalizedException(__('Magento website for "%1" is not configured.', $alias));
        }

        $storeIds = array_values(array_filter(
            array_map('intval', $website->getStoreIds()),
            static fn(int $storeId): bool => $storeId > 0
        ));
        if ($storeIds === []) {
            throw new LocalizedException(__('Website "%1" has no Store Views.', $alias));
        }

        return $this->resolved[$alias] = [
            'alias' => $alias,
            'code' => (string)$website->getCode(),
            'website_id' => (int)$website->getId(),
            'store_ids' => $storeIds,
        ];
    }
}