<?php

namespace App\Http\Middleware;

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

class HandleUploadErrors
{
    public function handle(Request $request, Closure $next): Response
    {
        // Check for PHP upload errors before processing
        if ($request->isMethod('POST') && $request->header('Content-Type', '') === 'application/json') {
            $content = $request->getContent();
            $data = json_decode($content, true);

            if (json_last_error() === JSON_ERROR_NONE) {
                // Check if any file uploads are present in the request
                $this->checkUploadLimits($data, $request);
            }
        }

        $response = $next($request);

        return $response;
    }

    protected function checkUploadLimits(array $data, Request $request): void
    {
        // Check PHP upload limits
        $uploadMax = $this->parseSize(ini_get('upload_max_filesize'));
        $postMax = $this->parseSize(ini_get('post_max_size'));

        // Log current limits for debugging
        Log::info('Upload limits', [
            'upload_max_filesize' => ini_get('upload_max_filesize'),
            'post_max_size' => ini_get('post_max_size'),
            'content_length' => $request->header('Content-Length'),
        ]);
    }

    protected function parseSize(string $size): int
    {
        $unit = strtolower(substr($size, -1));
        $value = (int) $size;

        return match ($unit) {
            'g' => $value * 1024 * 1024 * 1024,
            'm' => $value * 1024 * 1024,
            'k' => $value * 1024,
            default => $value,
        };
    }
}