<?php

declare(strict_types=1);

namespace App\Http\Middleware;

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

class UseSystemSessionCookieForLivewireRequests
{
    /**
     * @param  \Closure(\Illuminate\Http\Request): (\Symfony\Component\HttpFoundation\Response)  $next
     */
    public function handle(Request $request, Closure $next): Response
    {
        if (! $this->shouldUseSystemCookie($request)) {
            return $next($request);
        }

        $originalCookieName = (string) config('session.cookie');

        config(['session.cookie' => $this->systemCookieName()]);

        try {
            return $next($request);
        } finally {
            config(['session.cookie' => $originalCookieName]);
        }
    }

    private function shouldUseSystemCookie(Request $request): bool
    {
        if (
            ! $request->is('livewire-*/update')
            && ! $request->is('livewire-*/upload-file')
            && ! $request->is('livewire-*/preview-file/*')
        ) {
            return false;
        }

        if ($this->snapshotIndicatesSystemPanel($request)) {
            return true;
        }

        $refererPath = parse_url((string) $request->headers->get('referer', ''), PHP_URL_PATH) ?? '';
        $refererPath = '/'.ltrim((string) $refererPath, '/');

        return $refererPath === '/system' || str_starts_with($refererPath, '/system/');
    }

    private function snapshotIndicatesSystemPanel(Request $request): bool
    {
        if (! $request->is('livewire-*/update')) {
            return false;
        }

        $components = $request->input('components');

        if (! is_array($components)) {
            return false;
        }

        foreach ($components as $componentPayload) {
            if (! is_array($componentPayload)) {
                continue;
            }

            $snapshot = $componentPayload['snapshot'] ?? null;

            if (! is_string($snapshot) || $snapshot === '') {
                continue;
            }

            $decodedSnapshot = json_decode($snapshot, associative: true);

            if (! is_array($decodedSnapshot)) {
                continue;
            }

            $path = $decodedSnapshot['memo']['path'] ?? null;

            if (! is_string($path) || $path === '') {
                continue;
            }

            $path = '/'.ltrim($path, '/');

            if ($path === '/system' || str_starts_with($path, '/system/')) {
                return true;
            }
        }

        return false;
    }

    private function systemCookieName(): string
    {
        return Str::slug((string) config('app.name', 'laravel')).'-system-session';
    }
}
