<?php
/**
 * @copyright NetMonsters <team@netmonsters.ru>
 * @link http://netmonsters.ru
 * @package Majestic
 * @subpackage db
 * @since 2011-11-10
 */

/**
 * @property Mongo $connection
 */
class MongoDriver extends NoSqlDbDriver
{


    protected $last_inset_id = 0;

    protected $db_name = 'admin';

    protected function getCollection($name)
    {
        return $this->connection->selectCollection($this->db, $name);
    }

    public function find($collection, $condition = array(), $fields = array(), $cache_key = null)
    {
        return $this->getCollection($collection)->find($condition, $fields);
    }

    public function get($collection, $condition, $fields = array())
    {
        return $this->getCollection($collection)->findOne($condition, $fields);
    }

    public function insert($collection, $data, $safe = true)
    {
        $result = $this->getCollection($collection)->insert($data, array('safe' => $safe));
        if (isset($result['ok']) && $result['ok'] == 1) {
            $this->last_inset_id = (string) $data['_id'];
            return true;
        } else {
            return false;
        }
    }

    public function update($collection, $data, $condition = array(), $upsert = false, $safe = true)
    {
        $result = $this->getCollection($collection)->update($condition, $data, array('upsert' => $upsert, 'safe' => $safe));

        if (isset($result['ok']) && $result['ok'] == 1) {
            if(isset($result['updatedExisting']) && isset($result['upserted'])) {
                $this->last_inset_id = (string) $result['upserted'];
            }
            return $result['n'];
        } else {
            return false;
        }
    }

    public function delete($collection, $condition = array(), $safe = true)
    {
        $result = $this->getCollection($collection)->remove($condition, array('safe' => $safe));
        if (isset($result['ok']) && $result['ok'] == 1) {
            return $result['n'];
        } else {
            return false;
        }
    }


    public function getInsertId($table = null, $key = null)
    {
        return $this->last_inset_id;
    }

    public function isConnected()
    {
        if (!is_null($this->connection)) {
            return $this->connection->connected;
        } else {
            return false;
        }
    }

    public function disconnect()
    {
        if ($this->isConnected()) {
            $this->connection->close();
        }
        $this->connection = null;
    }

    protected function connect()
    {
        if ($this->connection) {
            return;
        }

        $host = $this->config['hostname'];
        $port = isset($this->config['port']) ? ':' . (string) $this->config['port'] : '';

        $this->config = array(
            'username' => $this->config['username'],
            'password' => $this->config['password'],
            'db' => $this->config['database']
        );

        $this->connection = new Mongo('mongodb://' . $host . $port, $this->config);
        $this->db = $this->connection->selectDB($this->config['db']);
    }
}