<?php

declare(strict_types=1);

namespace App\Repositories;

use App\Http\MerchantApiClient;

final readonly class OfflineOrderRepository
{
    private const PAGE_LIMIT = 100;

    public function __construct(private MerchantApiClient $apiClient)
    {
    }

    /**
     * @param array<string, mixed> $query
     * @return list<array<string, mixed>>
     */
    public function list(array $query): array
    {
        $page = 1;
        $orders = [];
        $totalCount = null;

        do {
            $data = $this->apiClient->getOfflineOrders($query + [
                'page' => $page,
                'limit' => self::PAGE_LIMIT,
            ]);
            $pageOrders = $data['data']['list'] ?? [];

            if (!is_array($pageOrders) || $pageOrders === []) {
                break;
            }

            if ($totalCount === null) {
                $totalCount = isset($data['data']['count']) ? (int) $data['data']['count'] : null;
            }

            $orders = array_merge($orders, array_values(array_filter($pageOrders, is_array(...))));
            $page++;
        } while ($this->shouldFetchNextPage($orders, $pageOrders, $totalCount));

        return $orders;
    }

    /**
     * @param list<array<string, mixed>> $orders
     * @param mixed $pageOrders
     */
    private function shouldFetchNextPage(array $orders, mixed $pageOrders, ?int $totalCount): bool
    {
        if ($totalCount !== null) {
            return count($orders) < $totalCount;
        }

        return is_array($pageOrders) && count($pageOrders) >= self::PAGE_LIMIT;
    }
}