<?php

namespace App\Http\Middleware;

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

/**
 * Injects a branded boot splash (Ladill Mail style) into authenticated HTML
 * pages. The splash shows once per browser session while the app loads, then
 * fades out — masking the client-side boot so the app feels instant.
 */
class InjectBootSplash
{
    public function handle(Request $request, Closure $next): Response
    {
        $response = $next($request);

        if (! $request->isMethod('GET') || ! Auth::check()) {
            return $response;
        }

        if (! str_contains((string) $response->headers->get('Content-Type', ''), 'text/html')) {
            return $response;
        }

        $content = $response->getContent();
        if (! is_string($content)
            || stripos($content, '<body') === false
            || str_contains($content, 'id="ladill-boot"')) {
            return $response;
        }

        $splash = View::make('partials.boot-splash')->render();
        $content = preg_replace_callback('/<body\b[^>]*>/i', fn ($m) => $m[0].$splash, $content, 1);

        if (is_string($content)) {
            $response->setContent($content);
        }

        return $response;
    }
}