<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Str;
use Symfony\Component\HttpFoundation\Response;

class CorrelationId
{
    /** @param Closure(Request): Response $next */
    public function handle(Request $request, Closure $next): Response
    {
        $provided = $request->header('X-Correlation-ID');
        $correlationId = is_string($provided) && Str::isUuid($provided)
            ? $provided
            : (string) Str::uuid();

        if ($provided !== null && ! Str::isUuid($provided)) {
            return response()->json([
                'message' => 'O identificador de correlação deve ser um UUID válido.',
                'code' => 'invalid_correlation_id',
                'correlation_id' => $correlationId,
            ], 422)->header('X-Correlation-ID', $correlationId);
        }

        $request->attributes->set('correlation_id', $correlationId);
        $response = $next($request);
        $response->headers->set('X-Correlation-ID', $correlationId);

        return $response;
    }
}