<?php
/**
 * @package angifw
 * @copyright Copyright (C) 2009-2017 Nicholas K. Dionysopoulos. All rights reserved.
 * @author Nicholas K. Dionysopoulos - http://www.dionysopoulos.me
 * @license http://www.gnu.org/copyleft/gpl.html GNU/GPL v3 or later
 *
 * Akeeba Next Generation Installer Framework
 *
 * This file may contain code from the Joomla! Platform, Copyright (c) 2005 -
 * 2012 Open Source Matters, Inc. This file is NOT part of the Joomla! Platform.
 * It is derivative work and clearly marked as such as per the provisions of the
 * GNU General Public License.
 */

defined('_AKEEBA') or die();

class AObject
{
	/**
	 * Class constructor, overridden in descendant classes.
	 *
	 * @param   mixed  $properties  Either and associative array or another
	 *                              object to set the initial properties of the object.
	 *
	 */
	public function __construct($properties = null)
	{
		if ($properties !== null)
		{
			$this->setProperties($properties);
		}
	}

	/**
	 * Sets a default value if not alreay assigned
	 *
	 * @param   string  $property  The name of the property.
	 * @param   mixed   $default   The default value.
	 *
	 * @return  mixed
	 */
	public function def($property, $default = null)
	{
		$value = $this->get($property, $default);
		return $this->set($property, $value);
	}

	/**
	 * Returns a property of the object or the default value if the property is not set.
	 *
	 * @param   string  $property  The name of the property.
	 * @param   mixed   $default   The default value.
	 *
	 * @return  mixed    The value of the property.
	 *
	 * @see     getProperties()
	 */
	public function get($property, $default = null)
	{
		if (isset($this->$property))
		{
			return $this->$property;
		}
		return $default;
	}

	/**
	 * Returns an associative array of object properties.
	 *
	 * @param   boolean  $public  If true, returns only the public properties.
	 *
	 * @return  array
	 *
	 * @see     get()
	 */
	public function getProperties($public = true)
	{
		$vars = get_object_vars($this);
		if ($public)
		{
			foreach ($vars as $key => $value)
			{
				if ('_' == substr($key, 0, 1))
				{
					unset($vars[$key]);
				}
			}
		}

		return $vars;
	}

	/**
	 * Modifies a property of the object, creating it if it does not already exist.
	 *
	 * @param   string  $property  The name of the property.
	 * @param   mixed   $value     The value of the property to set.
	 *
	 * @return  mixed  Previous value of the property.
	 */
	public function set($property, $value = null)
	{
		$previous = isset($this->$property) ? $this->$property : null;
		$this->$property = $value;
		return $previous;
	}

	/**
	 * Set the object properties based on a named array/hash.
	 *
	 * @param   mixed  $properties  Either an associative array or another object.
	 *
	 * @return  boolean
	 *
	 * @see     set()
	 */
	public function setProperties($properties)
	{
		if (is_array($properties) || is_object($properties))
		{
			foreach ((array) $properties as $k => $v)
			{
				// Use the set function which might be overridden.
				$this->set($k, $v);
			}
			return true;
		}

		return false;
	}
}
