<?php
declare(strict_types=1);

namespace Esun\LingxingErp\Model\Store;

use Esun\LingxingErp\Model\Api\ApiException;
use Esun\LingxingErp\Model\Api\Client;
use Esun\LingxingErp\Model\Api\Endpoint;

class StoreFetcher
{
    private const PAGE_SIZE = 200;
    private const PLATFORM_CODE = 10009;

    public function __construct(private readonly Client $client)
    {
    }

    /** @return array<int, array<string, mixed>> */
    public function fetchAll(): array
    {
        $stores = [];
        $offset = 0;
        do {
            $response = $this->client->post(Endpoint::STORE_LIST, [
                'offset' => $offset,
                'length' => self::PAGE_SIZE,
                'platform_code' => [self::PLATFORM_CODE],
            ]);
            $list = is_array($response['data']['list'] ?? null) ? $response['data']['list'] : [];
            foreach ($list as $store) {
                if (!is_array($store)) {
                    continue;
                }
                $platformCode = (int)($store['platform_code'] ?? 0);
                $storeId = trim((string)($store['store_id'] ?? ''));
                if ($platformCode <= 0 || $storeId === '') {
                    throw new ApiException('StoreInfoV2 returned a store without platform_code or store_id.', 'invalid_store_data');
                }
                $stores[] = $store;
            }

            $received = count($list);
            $offset += $received;
            $total = max(0, (int)($response['data']['total'] ?? $offset));
        } while ($received > 0 && $offset < $total);

        return $stores;
    }
}