<?php

class Mapper_User extends Fiktiv_Model_Mapper_DbTableAbstract
{

    protected function _createUser($object)
    {
        
        $user = new User();

        if ($object instanceof Zend_Db_Table_Row) {

            $user->setEmail($object->email);
            $user->setFirstName($object->firstName);
            $user->setLastName($object->lastName);

        } else if (is_array($object)) {

            $user->setEmail($object['email']);
            $user->setFirstName($object['firstName']);
            $user->setLastName($object['lastName']);

        } else {
            $user = null;
        }


        return $user;
    }


    public function findById($id)
    {
        if (is_numeric($id)) {
            return $this->_createUser($this->_dbTable->find($id)->current());
        }
    }

    /**
     * Fetch user based on email
     *
     * @return User
     */
    public function findByEmail($email)
    {
        // Atleast 6 character long
        if (is_string($email) && isset($email[5])) {
            
            $user = $this->_createUser($this->_dbTable->fetchRow($this->_dbTable->getAdapter()->quoteInto('email = ?', $email)));

            return $user;
        }

        return null;
    }

    /**
     * Get random user
     *
     * @return User
     */
    public function findRandom()
    {
         return $this->_createUser($this->_dbTable->fetchAll(null, 'RAND()', 1)->current());
    }

    
    /**
     * Authenticate user
     *
     * @param string $email
     * @param string $password
     */
    public function login($email, $password)
    {
        $auth = Zend_Auth::getInstance();

        // Setup auth adapter
        $authAdapter = new Zend_Auth_Adapter_DbTable($this->_dbTable->getAdapter(), $this->_dbTable->_name, 'email', 'password');

        // Set credentials
        $authAdapter->setIdentity($email);
        $authAdapter->setCredential(hash('sha256',$password));

        // Authenticate
        $result = $auth->authenticate($authAdapter);

        // Check result
        if ($result->isValid()) {
            // Keep all but password and salt in session.
            $storage = $auth->getStorage();
            $storage->write($authAdapter->getResultRowObject(null, array('password', 'salt')));

            return true;
        }

        return false;
    }
}