Add optional to control wether a welcome mail should be send after a registration by social network

docs/install/configuration-options.md

@@ -148,6 +148,10 @@ register by throwing a `NotFoundHttpException` if the `RegistrationController::a
 Setting this attribute allows the registration process via social networks. If you set it to `false`, the module won't allow users to
 register.
 
+#### sendWelcomeMailAfterSocialNetworkRegistration (type: `boolean`, default: `true`)
+
+Setting this attribute controls wether a confirmation mail should be send or not.
+
 #### enableEmailConfirmation (type: `boolean`, default: `true`)
 
 If `true`, the module will send an email with a confirmation link that user needs to click through to complete its

src/User/Controller/RegistrationController.php

@@ -17,6 +17,7 @@ use Da\User\Event\UserEvent;
 use Da\User\Factory\MailFactory;
 use Da\User\Form\RegistrationForm;
 use Da\User\Form\ResendForm;
+use Da\User\Helper\SecurityHelper;
 use Da\User\Model\SocialNetworkAccount;
 use Da\User\Model\User;
 use Da\User\Query\SocialNetworkAccountQuery;
@@ -175,7 +176,11 @@ class RegistrationController extends Controller
         if ($user->load(Yii::$app->request->post()) && $user->validate()) {
             $this->trigger(SocialNetworkConnectEvent::EVENT_BEFORE_CONNECT, $event);
 
-            $mailService = MailFactory::makeWelcomeMailerService($user);
+            if ($this->module->sendWelcomeMailAfterSocialNetworkRegistration) {
+                $mailService = MailFactory::makeWelcomeMailerService($user);
+            } else {
+                $mailService = null;
+            }
             if ($this->make(UserCreateService::class, [$user, $mailService])->run()) {
                 $account->connect($user);
                 $this->trigger(SocialNetworkConnectEvent::EVENT_AFTER_CONNECT, $event);

src/User/Module.php

@@ -121,6 +121,10 @@ class Module extends BaseModule
      * @var bool whether to allow registration process for social network or not
      */
     public $enableSocialNetworkRegistration = true;
+    /**
+     * @var bool whether to send a welcome mail after the registration process for social network
+     */
+    public $sendWelcomeMailAfterSocialNetworkRegistration = true;
     /**
      * @var bool whether to force email confirmation to
      */

src/User/Service/UserCreateService.php

@@ -31,7 +31,7 @@ class UserCreateService implements ServiceInterface
     protected $securityHelper;
     protected $mailService;
 
-    public function __construct(User $model, MailService $mailService, SecurityHelper $securityHelper)
+    public function __construct(User $model, ?MailService $mailService, SecurityHelper $securityHelper)
     {
         $this->model = $model;
         $this->mailService = $mailService;
@@ -70,7 +70,7 @@ class UserCreateService implements ServiceInterface
             }
 
             $model->trigger(UserEvent::EVENT_AFTER_CREATE, $event);
-            if (!$this->sendMail($model)) {
+            if ($this->mailService instanceof MailService && !$this->sendMail($model)) {
                 $error_msg = Yii::t(
                     'usuario',
                     'Error sending welcome message to "{email}". Please try again later.',