Simple User Management example

Authentication.php

<?php

class Authentication
{
    /**
     * @var UserProviderInterface
     */
    private $userprovider;
    
    /**
     * @var User
     */
    private $_user;

    /**
     * @param UserProviderInterface $userprovider
     */
    public function __construct($userprovider)
    {
        $this->setUserProvider($userprovider);
    }

    public function getUser()
    {
        if (null === $this->_user) {
            $this->_user = $this->createUser();
        }

        return $this->_user;
    }

    protected function createUser()
    {
        try {
            $user = $this->userprovider->getUser();
        } catch (\Exception $e) {
            // als er iets fout is gegaan (\Exception moet preciezer)
            $user = new User('anonymous');
        }

        return $user;
    }

    private function setUserProvider(UserProviderInterface $userprovider)
    {
        $this->userpovider = $userprovider;
    }
}

Authorization.php

<?php

class Authorization
{
    private $roleTree;

    /**
     * @var User
     */
    private $user;

    public function __construct($roleTree, User $user)
    {
        $this->setUser($user);
        $this->setRoleTree($roleTree);
    }

    public function isGranted($role)
    {
        if ($roleTree->hasRights($this->getUser($user)->getRole(), $role)) {
            return true;
        }

        return false;
    }

    private function setRoleTree($roleTree)
    {
        // ... the roletree is loaded from a configuration file
    }
}

Role.php

<?php

class Role implements RoleInterface
{
    private $role;

    public function __construct($role)
    {
        $this->setRole($role);
    }

    public function getRole()
    {
        return $this->role;
    }

    /**
     * @param string $role
     */
    private function setRole($role)
    {
        $this->role = $role;
    }
}

RoleInterface.php

<?php

interface RoleInterface
{
    /**
     * @return string
     */
    public function getRole();
}

User.php

<?php

class User
{
    private $name;

    /**
     * @var RoleInterface
     */
    private $role;

    /**
     * @param string $name
     */
    public function __construct($name)
    {
        $this->setName($name);
    }

    /**
     * @param string $name
     */
    public function setName($name)
    {
        $this->name = $name;
    }

    /**
     * @return string
     */
    public function getName()
    {
        return $this->name;
    }

    public function setRole(RoleInterface $role)
    {
        $this->role = $role;
    }

    /**
     * @return RoleInterface
     */
    public function getRole()
    {
        return $this->role;
    }
}