/**
* Performs an authentication against e.g. database.
* and returns IIdentity on success or throws AuthenticationException
* @return IIdentity
* @throws AuthenticationException
*/
public function authenticate(array $credentials)
{
list($email, $password) = $credentials;
$row = $this->userService->getByEmail($email);
if (!$row) {
throw new AuthenticationException('The username is incorrect.', self::IDENTITY_NOT_FOUND);
} elseif (!Passwords::verify($password, $row->password)) {
throw new AuthenticationException('The password is incorrect.', self::INVALID_CREDENTIAL);
} elseif (Passwords::needsRehash($row->password)) {
$this->userService->edit(['password' => Passwords::hash($password)], ['email' => $email]);
}
$row->password = null;
$this->onSignIn($row->email);
return new Identity($row->idUser, null, []);
//TODO: přenášet informace o uživateli?
}