use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\ORM\Event\PreUpdateEventArgs;
 use Symfony\Component\Security\Core\User\UserInterface;
+use Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface;
 
 use Rapsys\UserBundle\Entity\Civility;
 use Rapsys\UserBundle\Entity\Group;
 /**
  * User
  */
-class User implements UserInterface, \Serializable {
+class User implements UserInterface, PasswordAuthenticatedUserInterface, \Serializable {
        /**
         * @var integer
         */
         * @param string $mail The user mail
         */
        public function __construct(string $mail) {
-               //Extract names from mail
-               $names = explode(' ', ucwords(trim(preg_replace('/[^a-zA-Z]+/', ' ', current(explode('@', $mail))))));
+               //With mail
+               if (!empty($this->mail = $mail)) {
+                       $this->password = $mail;
+               } else {
+                       $this->password = '';
+               }
 
                //Set defaults
-               $this->mail = $mail;
-               $this->forename = $names[0];
-               $this->surname = $names[1]??$names[0];
-               $this->password = $mail;
+               $this->forename = null;
+               $this->surname = null;
                $this->active = false;
                $this->disabled = false;
                $this->created = new \DateTime('now');
         * @return User
         */
        public function setMail(string $mail): User {
-               $this->mail = $mail;
+               //With mail
+               if (!empty($this->mail = $mail)) {
+                       //Without password
+                       if (empty($this->password)) {
+                               //Set mail as password
+                               $this->password = $mail;
+                       }
+               }
 
                return $this;
        }
        /**
         * Set forename
         *
-        * @param string $forename
+        * @param ?string $forename
         *
         * @return User
         */
-       public function setForename(string $forename): User {
+       public function setForename(?string $forename): User {
                $this->forename = $forename;
 
                return $this;
        /**
         * Get forename
         *
-        * @return string
+        * @return ?string
         */
-       public function getForename(): string {
+       public function getForename(): ?string {
                return $this->forename;
        }
 
        /**
         * Set surname
         *
-        * @param string $surname
+        * @param ?string $surname
         *
         * @return User
         */
-       public function setSurname(string $surname): User {
+       public function setSurname(?string $surname): User {
                $this->surname = $surname;
 
                return $this;
        /**
         * Get surname
         *
-        * @return string
+        * @return ?string
         */
-       public function getSurname(): string {
+       public function getSurname(): ?string {
                return $this->surname;
        }
 
                return $this->mail;
        }
 
+       /**
+        * {@inheritdoc}
+        */
+       public function getUserIdentifier(): string {
+               return $this->mail;
+       }
+
        /**
         * {@inheritdoc}
         */
                }
        }
 
+       /**
+        * Returns a recipient name of the user
+        *
+        * @return string
+        */
+       public function getRecipientName(): string {
+               //Without forename and surname
+               if (empty($this->forename) && empty($this->surname)) {
+                       //Return recipient name from mail
+                       return ucwords(trim(preg_replace('/[^a-zA-Z]+/', ' ', current(explode('@', $this->mail)))));
+               }
+
+               //Return recipient name from forename and surname
+               return implode(' ', [$this->forename, $this->surname]);
+       }
+
        /**
         * Returns a string representation of the user
         *