<?php namespace Apache\Usergrid\Native;

/**
 * Copyright 2010-2014 baas-platform.com, Pty Ltd. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */

use ArrayAccess;

/**
 * Class ConfigRepository
 *
 * @package    Apache/Usergrid
 * @version    1.0.0
 * @author     Jason Kristian <jasonkristian@gmail.com>
 * @license    Apache License, Version  2.0
 * @copyright  (c) 2008-2014, Baas Platform Pty. Ltd
 * @link       http://baas-platform.com
 */
class ConfigRepository implements ArrayAccess
{

    /**
     * The config file path.
     *
     * @var string
     */
    protected $file;

    /**
     * The config data.
     *
     * @var array
     */
    protected $config = [];

    /**
     * Constructor.
     *
     * @param  string $file
     * @return \Apache\Usergrid\Native\ConfigRepository
     */
    public function __construct($file)
    {
        $this->file = $file;

        $this->load();
    }

    /**
     * Load the configuration file.
     *
     * @return void
     */
    protected function load()
    {
        $this->config = require $this->file;
    }

    /**
     * {@inheritDoc}
     */
    public function offsetExists($key)
    {
        return isset($this->config[$key]);
    }

    /**
     * {@inheritDoc}
     */
    public function offsetGet($key)
    {
        return $this->config[$key];
    }

    /**
     * {@inheritDoc}
     */
    public function offsetSet($key, $value)
    {
        $this->config[$key] = $value;
    }

    /**
     * {@inheritDoc}
     */
    public function offsetUnset($key)
    {
        unset($this->config[$key]);
    }

}