<?php

namespace App\Http\Controllers\Api\V1\Admin\Integration;

use App\Models\AdminSite;
use App\Support\ApiMessage;
use App\Support\ApiResponse;
use App\Lottery\ErrorCode;
use Illuminate\Http\Request;
use Illuminate\Http\JsonResponse;
use App\Http\Controllers\Controller;
use App\Support\AdminIntegrationSiteAccess;
use App\Support\AdminIntegrationSitePresenter;
use Symfony\Component\HttpFoundation\StreamedResponse;

final class AdminIntegrationSiteExportController extends Controller
{
    public function __invoke(Request $request, AdminSite $admin_site): JsonResponse|StreamedResponse
    {
        $admin = $request->lotteryAdmin();
        abort_if($admin === null, 401);

        if (! AdminIntegrationSiteAccess::canAccess($admin, $admin_site)) {
            return ApiMessage::errorResponse($request, 'admin.site_access_denied', ErrorCode::AdminForbidden->value, null, 403);
        }

        $sheet = AdminIntegrationSitePresenter::parameterSheet($admin_site);
        $format = strtolower(trim((string) $request->query('format', 'json')));

        if ($format === 'csv') {
            $filename = 'integration-'.$admin_site->code.'-'.now()->format('Ymd-His').'.csv';

            return response()->streamDownload(function () use ($sheet): void {
                $out = fopen('php://output', 'w');
                fputcsv($out, ['field', 'value']);
                foreach ($sheet as $key => $value) {
                    if (is_array($value)) {
                        $value = json_encode($value, JSON_UNESCAPED_UNICODE);
                    }
                    fputcsv($out, [(string) $key, is_scalar($value) || $value === null ? (string) $value : json_encode($value)]);
                }
                fclose($out);
            }, $filename, ['Content-Type' => 'text/csv; charset=UTF-8']);
        }

        return ApiResponse::success($sheet);
    }
}
