use Rapsys\UserBundle\Entity\Group;
 use Symfony\Component\Security\Core\User\UserInterface;
 use Doctrine\Common\Collections\ArrayCollection;
+use Rapsys\UserBundle\Entity\Title;
 
 class User implements UserInterface, \Serializable {
        /**
        protected $groups;
 
        /**
-        * User constructor.
+        * Constructor
         */
        public function __construct() {
                $this->active = false;
        /**
         * Get password
         *
+        * {@inheritdoc}
+        *
         * @return string
         */
        public function getPassword() {
        /**
         * Set title
         */
-       public function setTitle($title) {
+       public function setTitle(Title $title) {
                $this->title = $title;
 
                return $this;
        /**
         * Get title
         */
-       public function getTitle() {
+       public function getTitle(): Title {
                return $this->title;
        }
 
                return $this->groups;
        }
 
+       /**
+        * {@inheritdoc}
+        */
        public function getRoles() {
-               $roles = [ 'ROLE_USER' ];
-
-               foreach($this->groups->toArray() as $group) {
-                       $roles[] = $group->getRole();
-               }
+               //Get the unique roles list by id
+               return array_unique(array_reduce(
+                       //Cast groups as array
+                       $this->groups->toArray(),
+                       //Reduce to an array of id => group tuples
+                       function ($array, $group) {
+                               $array[$group->getId()] = $group->getRole();
+                               return $array;
+                       },
+                       //Init with ROLE_USER
+                       //XXX: we assume that ROLE_USER has id 1 in database
+                       [ 1 => 'ROLE_USER' ]
+               ));
+       }
 
-               return array_unique($roles);
+       public function getRole() {
+               //Retrieve roles
+               $roles = $this->getRoles();
+
+               //Return the role with max id
+               //XXX: should be rewriten if it change in your configuration
+               return $roles[array_reduce(
+                       array_keys($roles),
+                       function($cur, $id) {
+                               if ($id > $cur) {
+                                       return $id;
+                               }
+                               return $cur;
+                       },
+                       0
+               )];
        }
 
+       /**
+        * {@inheritdoc}
+        */
        public function getSalt() {
                //No salt required with bcrypt
                return null;
        }
 
+       /**
+        * {@inheritdoc}
+        */
        public function getUsername() {
                return $this->mail;
        }
 
-       public function eraseCredentials() {
-       }
+       /**
+        * {@inheritdoc}
+        */
+       public function eraseCredentials() {}
 
-       public function serialize() {
-               return serialize(array(
+       public function serialize(): string {
+               return serialize([
                        $this->id,
                        $this->mail,
                        $this->password,
                        $this->active,
                        $this->created,
                        $this->updated
-               ));
+               ]);
        }
 
        public function unserialize($serialized) {
        public function isEnabled() {
                return $this->active;
        }
+
+       /**
+        * Returns a string representation of the user
+        *
+        * @return string
+        */
+       public function __toString(): string {
+               return $this->title.' '.$this->forename.' '.$this->surname;
+       }
 }