Integrando "Invisible reCAPTCHA" de Google de forma fácil en Laravel

 1<?php
 2namespace App\Helpers;
 3 
 4use GuzzleHttp\Client;
 5 
 6/**
 7 * ReCaptcha
 8 */
 9class ReCaptcha
10{
11    const CAPTCHA_URL = 'https://www.google.com/recaptcha/api/';
12    const TIMEOUT = 20.0;
13 
14    protected $client;
15 
16    public function __construct()
17    {
18        $this->client = new Client([
19            'base_uri' => self::CAPTCHA_URL,
20            'timeout'  => self::TIMEOUT,
21        ]);
22    }
23 
24    /**
25     * validateCaptcha
26     *
27     * @param [type] $recaptcha
28     * @return void
29     */
30    public function validateCaptcha($recaptcha)
31    {
32        $captchaData = [
33            'headers'   =>  [
34                'content-type'  => 'application/x-www-form-urlencoded',
35                'accept'        => 'application/json',
36                'cache-control' => 'no-cache'
37            ],
38            'form_params' => [
39                'secret'    => config('google.recaptcha_secret_key'),
40                'response'  => $recaptcha
41            ]
42        ];
43 
44        $request    = $this->client->request('POST', 'siteverify', $captchaData);
45        $body       = $request->getBody()->getContents();
46        $response   = json_decode($body, true);
47        // score over 0.5 human
48        return $response['score'] >= '0.5' ? true : false;
49    }
50}

1$this->app->bind(ReCaptcha::class, function () {
2    return new ReCaptcha;
3});

 1Blade::directive('rederRecaptchaJs', function ($key, $action = 'contact_form' ) {
 2    return '
 3    <script src="https://www.google.com/recaptcha/api.js?render='.$key.'"></script>
 4    <script>grecaptcha.ready(function() {grecaptcha.execute("'.$key.'", {action: "'.$action.'"}).then(function(token) {if (token) { document.getElementById("recaptcha").value = token }});});</script>';
 5});
 6 
 7Blade::directive('rederRecaptcha', function ($key) {
 8    return '<input type="hidden" name="recaptcha" id="recaptcha">
 9    <div class="recaptcha_text_render"> This site is protected by reCAPTCHA and the Google
10        <a class="recaptcha_text_link_render" href="https://policies.google.com/privacy" target="_blank">Privacy Policy</a> and
11        <a class="recaptcha_text_link_render" href="https://policies.google.com/terms" target="_blank">Terms of Service</a> apply.
12    </div>';
13});

1@rederRecaptchaJs()
2@rederRecaptcha

 1public $recaptcha;
 2 
 3public function __construct(ReCaptcha $recaptcha)
 4{
 5    $this->recaptcha = $recaptcha;
 6}
 7 
 8/**
 9 * Handle the incoming request.
10 *
11 * @param  \Illuminate\Http\Request  $request
12 * @return \Illuminate\Http\Response
13 */
14public function __invoke(ContactFormRequest $request)
15{
16    if ($this->recaptcha->validateCaptcha($request->recaptcha)) {
17        //
18    }
19    //
20}