<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Application
 * @subpackage Resource
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: ResourceAbstract.php 16200 2009-06-21 18:50:06Z thomas $
 */

/**
 * @see Zend_Application_Resource_Resource
 */
require_once 'Zend/Application/Resource/Resource.php';

/**
 * Abstract class for bootstrap resources
 *
 * @uses       Zend_Application_Resource_Resource
 * @category   Zend
 * @package    Zend_Application
 * @subpackage Resource
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
abstract class Zend_Application_Resource_ResourceAbstract implements Zend_Application_Resource_Resource
{
    /**
     * Parent bootstrap
     * 
     * @var Zend_Application_Bootstrap_Bootstrapper
     */
    protected $_bootstrap;

    /**
     * Options for the resource
     * 
     * @var array
     */
    protected $_options = array();

    /**
     * Option keys to skip when calling setOptions()
     *
     * @var array
     */
    protected $_skipOptions = array(
        'options',
        'config',
    );

    /**
     * Create a instance with options
     *
     * @param mixed $options
     */
    public function __construct($options = null)
    {
        if (is_array($options)) {
            $this->setOptions($options);
        } else if ($options instanceof Zend_Config) {
            $this->setOptions($options->toArray());
        }
    }

    /**
     * Set options from array
     *
     * @param  array $options Configuration for resource
     * @return Zend_Application_Resource_ResourceAbstract
     */
    public function setOptions(array $options)
    {
        foreach ($options as $key => $value) {
            if (in_array(strtolower($key), $this->_skipOptions)) {
                continue;
            }

            $method = 'set' . strtolower($key);
            if (method_exists($this, $method)) {
                $this->$method($value);
            }
            if ('bootstrap' == $key) {
                unset($options[$key]);
            }
        }
        
        $this->_options = $this->mergeOptions($this->_options, $options);

        return $this;
    }

    /**
     * Retrieve resource options
     * 
     * @return array
     */
    public function getOptions()
    {
        return $this->_options;
    }

    /**
     * Merge options recursively
     * 
     * @param  array $array1 
     * @param  mixed $array2 
     * @return array
     */
    public function mergeOptions(array $array1, $array2 = null)
    {
        if (is_array($array2)) {
            foreach ($array2 as $key => $val) {
                if (is_array($array2[$key])) {
                    $array1[$key] = (array_key_exists($key, $array1) && is_array($array1[$key]))
                                  ? $this->mergeOptions($array1[$key], $array2[$key]) 
                                  : $array2[$key];
                } else {
                    $array1[$key] = $val;
                }
            }
        }
        return $array1;
    }

    /**
     * Set the bootstrap to which the resource is attached
     * 
     * @param  Zend_Application_Bootstrap_Bootstrapper $bootstrap 
     * @return Zend_Application_Resource_Resource
     */
    public function setBootstrap(Zend_Application_Bootstrap_Bootstrapper $bootstrap)
    {
        $this->_bootstrap = $bootstrap;
        return $this;
    }

    /**
     * Retrieve the bootstrap to which the resource is attached
     * 
     * @return null|Zend_Application_Bootstrap_Bootstrapper
     */
    public function getBootstrap()
    {
        return $this->_bootstrap;
    }
}