<?php

/*

 * This file is part of the FOSUserBundle package.

 *

 * (c) FriendsOfSymfony <http://friendsofsymfony.github.com/>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace FOS\UserBundle\Document;

use Doctrine\ODM\MongoDB\DocumentManager;

use Doctrine\ODM\MongoDB\Proxy\Proxy;

use FOS\UserBundle\Model\UserInterface;

use FOS\UserBundle\Model\UserManager as BaseUserManager;

use FOS\UserBundle\Util\CanonicalizerInterface;

use Symfony\Component\Security\Core\Encoder\EncoderFactoryInterface;

use Symfony\Component\Validator\Constraint;

class UserManager extends BaseUserManager

{

    protected $dm;

    protected $repository;

    protected $class;

    /**

     * Constructor.

     *

     * @param EncoderFactoryInterface $encoderFactory

     * @param string                  $algorithm

     * @param CanonicalizerInterface  $usernameCanonicalizer

     * @param CanonicalizerInterface  $emailCanonicalizer

     * @param DocumentManager         $dm

     * @param string                  $class

     */

    public function __construct(EncoderFactoryInterface $encoderFactory, $algorithm, CanonicalizerInterface $usernameCanonicalizer, CanonicalizerInterface $emailCanonicalizer, DocumentManager $dm, $class)

    {

        parent::__construct($encoderFactory, $algorithm, $usernameCanonicalizer, $emailCanonicalizer);

        $this->dm = $dm;

        $this->repository = $dm->getRepository($class);

        $metadata = $dm->getClassMetadata($class);

        $this->class = $metadata->name;

    }

    /**

     * {@inheritDoc}

     */

    public function deleteUser(UserInterface $user)

    {

        $this->dm->remove($user);

        $this->dm->flush();

    }

    /**

     * {@inheritDoc}

     */

    public function getClass()

    {

        return $this->class;

    }

    /**

     * {@inheritDoc}

     */

    public function findUserBy(array $criteria)

    {

        return $this->repository->findOneBy($criteria);

    }

    /**

     * {@inheritDoc}

     */

    public function findUsers()

    {

        return $this->repository->findAll();

    }

    /**

     * {@inheritDoc}

     */

    public function reloadUser(UserInterface $user)

    {

        $this->dm->refresh($user);

    }

    /**

     * Updates a user.

     *

     * @param UserInterface $user

     * @param Boolean $andFlush Whether to flush the changes (default true)

     */

    public function updateUser(UserInterface $user, $andFlush = true)

    {

        $this->updateCanonicalFields($user);

        $this->updatePassword($user);

        $this->dm->persist($user);

        if ($andFlush) {

            $this->dm->flush();

        }

    }

    /**

     * {@inheritDoc}

     */

    public function validateUnique(UserInterface $value, Constraint $constraint)

    {

        // Since we probably want to validate the canonical fields,

        // we'd better make sure we have them.

        $this->updateCanonicalFields($value);

        $classMetadata = $this->dm->getClassMetadata($this->class);

        // TODO: ODM seems to be missing handling for multiple properties

        // $fields = array_map('trim', explode(',', $constraint->property));

        $query = $this->getQueryArray($classMetadata, $value, $constraint->property);

        $document = $this->findUserBy($query);

        if (null === $document) {

            return true;

        }

        // check if document in mongodb is the same document as the checked one

        if ($document->isUser($value)) {

            return true;

        }

        // check if returned document is proxy and initialize the minimum identifier if needed

        if ($document instanceof Proxy) {

            $classMetadata->setIdentifierValue($document, $document->__identifier);

        }

        // check if document has the same identifier as the current one

        if ($classMetadata->getIdentifierValue($document) === $classMetadata->getIdentifierValue($value)) {

            return true;

        }

        return false;

    }

    protected function getQueryArray($classMetadata, $value, $fieldName)

    {

        $field = $this->getFieldNameFromPropertyPath($fieldName);

        if (!isset($classMetadata->fieldMappings[$field])) {

            throw new \LogicException("Mapping for '$fieldName' doesn't exist for " . $this->class);

        }

        $mapping = $classMetadata->fieldMappings[$field];

        if (isset($mapping['reference']) && $mapping['reference']) {

            throw new \LogicException('Cannot determine uniqueness of referenced document values');

        }

        $criteria[$field] = $value instanceOf UserInterface ? $classMetadata->getFieldValue($value, $field) : $value;

        return $criteria;

    }

    /**

     * Returns the actual document field value.

     *

     * E.g. document.someVal -> document

     *      user.emails      -> user

     *      username         -> username

     *

     * @param string $field

     * @return string

     */

    protected function getFieldNameFromPropertyPath($field)

    {

        $pieces = explode('.', $field);

        return $pieces[0];

    }

}