Switch to new authentication system

src/Entity/User.php

@@ -7,6 +7,7 @@ use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
 use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
+use Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
 
 /**
@@ -14,7 +15,7 @@ use Symfony\Component\Security\Core\User\UserInterface;
  * @ORM\Table(name="`user`")
  * @UniqueEntity(fields={"email"}, message="There is already an account with this email")
  */
-class User implements UserInterface
+class User implements UserInterface, PasswordAuthenticatedUserInterface
 {
     /**
      * @ORM\Id
@@ -92,6 +93,14 @@ class User implements UserInterface
      *
      * @see UserInterface
      */
+    public function getUserIdentifier(): string
+    {
+        return (string) $this->email;
+    }
+
+    /**
+     * @deprecated since Symfony 5.3, use getUserIdentifier instead
+     */
     public function getUsername(): string
     {
         return (string) $this->username;
@@ -117,11 +126,11 @@ class User implements UserInterface
     }
 
     /**
-     * @see UserInterface
+     * @see PasswordAuthenticatedUserInterface
      */
     public function getPassword(): string
     {
-        return (string) $this->password;
+        return $this->password;
     }
 
     public function setPassword(string $password): self