<?php

namespace Chamilo\UserBundle\Repository;

use Doctrine\ORM\EntityRepository;
use Doctrine\ORM\NoResultException;
use Symfony\Component\Security\Core\Exception\UsernameNotFoundException;
use Symfony\Component\Security\Core\Exception\UnsupportedUserException;
use Chamilo\UserBundle\Entity\User as User;

/**
 * Class UserRepository
 * @package Entity\Repository
 */
class UserRepository extends EntityRepository
{
    /**
    * @param string $keyword
    * @return mixed
    */
    public function searchUserByKeyword($keyword)
    {
        $qb = $this->createQueryBuilder('a');

        // Selecting user info
        $qb->select('DISTINCT b');

        $qb->from('Chamilo\UserBundle\Entity\User', 'b');

        // Selecting courses for users
        //$qb->innerJoin('u.courses', 'c');

        //@todo check app settings
        $qb->add('orderBy', 'b.firstname ASC');
        $qb->where('b.firstname LIKE :keyword OR b.lastname LIKE :keyword ');
        $qb->setParameter('keyword', "%$keyword%");
        $query = $qb->getQuery();

        return $query->execute();
    }

    /**
     * @param string $username
     * @return User
     * @throws UsernameNotFoundException
     */
    /*public function loadUserByUsername($username)
    {
        $query = $this
            ->createQueryBuilder('u')
            ->where('u.username = :username OR u.email = :email')
            ->leftJoin('u.roles', 'r')
            ->setParameter('username', $username)
            ->setParameter('email', $username)
            ->getQuery();

        try {
            $user = $query->getSingleResult();
        } catch (NoResultException $e) {
            throw new UsernameNotFoundException(
                sprintf('Unable to find an active admin User identified by "%s".', $username),
                0,
                $e
            );
        }
        return $user;
    }*/


    /**
     * @param string $class
     * @return bool
     */
    /*public function supportsClass($class)
    {
        return $this->getEntityName() === $class || is_subclass_of($class, $this->getEntityName());
    }*/

    /**
     * Get course user relationship based in the course_rel_user table.
     * @return array
     */
    public function getCourses(User $user)
    {
        $queryBuilder = $this->createQueryBuilder('user');

        // Selecting course info.
        $queryBuilder->select('c');

        // Loading User.
        //$qb->from('Chamilo\UserBundle\Entity\User', 'u');

        // Selecting course
        $queryBuilder->innerJoin('Chamilo\CoreBundle\Entity\Course', 'c');

        //@todo check app settings
        //$qb->add('orderBy', 'u.lastname ASC');

        $wherePart = $queryBuilder->expr()->andx();

        // Get only users subscribed to this course
        $wherePart->add($queryBuilder->expr()->eq('user.userId', $user->getUserId()));

        $queryBuilder->where($wherePart);
        $query = $queryBuilder->getQuery();

        return $query->execute();
    }

    public function getTeachers()
    {
        $queryBuilder = $this->createQueryBuilder('u');

        // Selecting course info.
        $queryBuilder
            ->select('u')
            ->where('u.groups.id = :groupId')
            ->setParameter('groupId', 1);

        $query = $queryBuilder->getQuery();

        return $query->execute();

        /*$studentGroup = $this->findOneBy(array('name' => 'students'));
        return $this->getUsers($studentGroup);*/
    }

    public function getUsers($group)
    {
        $queryBuilder = $this->createQueryBuilder('u');

        // Selecting course info.
        $queryBuilder
            ->select('u')
            ->where('u.groups = :groupId')
            ->setParameter('groupId', $group);

        $query = $queryBuilder->getQuery();

        return $query->execute();
    }
}