On déplace la gestion du contrôle du Captcha dans un controller spécifique --> c'est plus propre (merci Franck :-)

local/modules/ReCaptcha/Config/config.xml

@@ -25,6 +25,11 @@
             <tag name="kernel.event_subscriber" />
             <argument type="service" id="request"/>
         </service>
+        <service id="thelia.form_validator" class="ReCaptcha\Form\MyTheliaFormValidator">
+            <argument type="service" id="thelia.translator" />
+            <argument>%kernel.environment%</argument>
+            <argument type="service" id="event_dispatcher" />
+        </service>
     </services>
 
     <hooks>

local/modules/ReCaptcha/Form/MyTheliaFormValidator.php

@@ -0,0 +1,39 @@
+<?php
+
+
+namespace ReCaptcha\Form;
+
+
+use ReCaptcha\Event\ReCaptchaCheckEvent;
+use ReCaptcha\Event\ReCaptchaEvents;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Component\Translation\TranslatorInterface;
+use Thelia\Form\BaseForm;
+use Thelia\Form\Exception\FormValidationException;
+
+class MyTheliaFormValidator extends \Thelia\Core\Form\TheliaFormValidator
+{
+    /** @var EventDispatcherInterface  */
+    protected $dispatcher;
+
+    public function __construct(TranslatorInterface $translator, $environment, EventDispatcherInterface $dispatcher)
+    {
+        $this->dispatcher = $dispatcher;
+
+        parent::__construct($translator, $environment);
+    }
+
+    public function validateForm(BaseForm $aBaseForm, $expectedMethod = null)
+    {
+        if ($aBaseForm->getRequest()->get('captcha')) {
+            $checkCaptchaEvent = new ReCaptchaCheckEvent();
+            $this->dispatcher->dispatch(ReCaptchaEvents::CHECK_CAPTCHA_EVENT, $checkCaptchaEvent);
+            if ($checkCaptchaEvent->isHuman() == false) {
+                throw new FormValidationException('Veuillez confirmer que vous n\'êtes pas un robot.');
+            }
+        }
+
+        return parent::validateForm($aBaseForm, $expectedMethod); // TODO: Change the autogenerated stub
+    }
+
+}

local/modules/ReCaptcha/Hook/FrontHook.php

@@ -22,6 +22,6 @@ class FrontHook extends BaseHook
             $captchaId = $captchaId.'-invisible';
         }
 
-        $event->add("<div id='$captchaId' class='g-recaptcha' data-sitekey='$siteKey' $captchaCallback data-size='$captchaStyle'></div>");
+        $event->add("<div id='$captchaId' class='g-recaptcha' data-sitekey='$siteKey' $captchaCallback data-size='$captchaStyle'></div><input type='hidden' name='captcha' value='1'>");
     }
 }