<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Symfony\Component\HttpFoundation\Response;

class SecurityHeaders
{
    public function handle(Request $request, Closure $next): Response
    {
        /** @var Response $response */
        $response = $next($request);

        $response->headers->set('X-Frame-Options', 'DENY');
        $response->headers->set('X-Content-Type-Options', 'nosniff');
        $response->headers->set('Referrer-Policy', 'strict-origin-when-cross-origin');
        $response->headers->set('Permissions-Policy', 'camera=(), microphone=(), geolocation=(self), payment=(self)');
        // Explicit Feature-Policy alias for older browsers that still honor it for geolocation.
        $response->headers->set('Feature-Policy', "geolocation 'self'");
        $response->headers->set('X-XSS-Protection', '0');

        if ($request->isSecure() || config('app.env') === 'production') {
            $response->headers->set('Strict-Transport-Security', 'max-age=31536000; includeSubDomains');
        }

        // Assets are local under /vendor and /css. Razorpay checkout is the only external script.
        $csp = implode('; ', [
            "default-src 'self'",
            "base-uri 'self'",
            "form-action 'self'",
            "frame-ancestors 'none'",
            "object-src 'none'",
            "img-src 'self' data: blob: https://*.razorpay.com https://razorpay.com",
            "font-src 'self' data:",
            "style-src 'self' 'unsafe-inline'",
            // Alpine/Livewire evaluate x-data expressions via new Function(); require unsafe-eval.
            "script-src 'self' 'unsafe-inline' 'unsafe-eval' https://checkout.razorpay.com",
            "connect-src 'self' https://api.razorpay.com https://lumberjack.razorpay.com",
            "frame-src 'self' https://api.razorpay.com https://checkout.razorpay.com",
        ]);
        $response->headers->set('Content-Security-Policy', $csp);

        return $response;
    }
}