<?php

namespace App\Http\Middleware;

use Closure;
use cPad\Plugins\Forum\Services\Security\BotProtectionService;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Http;
use Symfony\Component\HttpFoundation\Response;

class CommentCaptchaMiddleware
{
    public function __construct(private readonly BotProtectionService $botProtection) {}

    public function handle(Request $request, Closure $next): Response
    {
        if (! (bool) config('comment_spam.captcha.enabled', false)) {
            return $next($request);
        }

        $assessment = $this->botProtection->assess($request, 'comment_create');
        if ((bool) ($assessment['blocked'] ?? false)) {
            return response()->json(['message' => 'Suspicious activity detected.', 'errors' => ['bot' => ['Suspicious activity detected.']]], 429);
        }
        $threshold = (int) config('comment_spam.captcha.threshold', 40);
        if ((int) ($assessment['risk_score'] ?? 0) < $threshold) {
            return $next($request);
        }

        $token = (string) ($request->input('comment-turnstile-response') ?: $request->header('X-Turnstile-Token', ''));
        $valid = false;
        if ($token !== '') {
            try {
                $valid = (bool) Http::asForm()->timeout(5)->post(
                    (string) config('comment_spam.captcha.verify_url'),
                    ['secret' => (string) config('comment_spam.captcha.secret_key'), 'response' => $token, 'remoteip' => $request->ip()],
                )->json('success', false);
            } catch (\Throwable) {
                $valid = (bool) config('comment_spam.captcha.fail_open', false);
            }
        }

        if ($valid) {
            return $next($request);
        }

        $payload = [
            'message' => 'Complete the captcha challenge to continue.',
            'errors' => ['captcha' => ['Complete the captcha challenge to continue.']],
            'requires_captcha' => true,
            'captcha' => [
                'provider' => 'turnstile',
                'siteKey' => (string) config('comment_spam.captcha.site_key'),
                'inputName' => 'comment-turnstile-response',
                'scriptUrl' => (string) config('comment_spam.captcha.script_url'),
            ],
            'captcha_provider' => 'turnstile',
            'captcha_site_key' => (string) config('comment_spam.captcha.site_key'),
            'captcha_input' => 'comment-turnstile-response',
            'captcha_script_url' => (string) config('comment_spam.captcha.script_url'),
        ];

        return response()->json($payload, 422);
    }
}