<?php
/**
 * Abstract wrapper for core class functionality.
 * 
 * @since 1.0.0
 * 
 * @package    ACF Stylizer
 * @subpackage Wrapper
 */

if (!defined('ABSPATH')) exit;

if (!class_exists('ACF_Stylizer_Wrapper'))
{
	/**
	 * Abstract class used to implement core class functionality.
	 *
	 * @since 1.0.0
	 */
	abstract class ACF_Stylizer_Wrapper
	{
		/**
		 * Base plugin object.
		 * 
		 * @since 1.0.0
		 * 
		 * @access public
		 * @var    ACF_Stylizer
		 */
		public $_base = null;

		/**
		 * The stored properties.
		 * 
		 * @since 1.0.0
		 * 
		 * @access protected
		 * @var    array
		 */
		protected $_properties = array();

		/**
		 * Constructor function.
		 * 
		 * @since 1.0.2 Made base object argument optional.
		 * @since 1.0.0
		 * 
		 * @access public
		 * @param  ACF_Stylizer $base Optional base plugin object. If empty, the global object is used.
		 * @return void
		 */
		public function __construct(ACF_Stylizer $base = null)
		{
			$this->_base = (empty($base)) ? $GLOBALS[ACFS_TOKEN] : $base;
		}

		/**
		 * Get a property based on the provided name.
		 * 
		 * @since 1.0.0
		 * 
		 * @access public
		 * @param  string $name Name of the property to return.
		 * @return string       Property if it is found, otherwise an empty string.
		 */
		public function __get($name)
		{
			if (!isset($this->_properties[$name]) || $this->_properties[$name] == '')
			{
				return $this->_properties[$name] = $this->_default($name);
			}

			return $this->_properties[$name];
		}

		/**
		 * Check to see if a property exists with the provided name.
		 * 
		 * @since 1.0.0
		 * 
		 * @access public
		 * @param  string  $name Name of the property to check.
		 * @return boolean       True if the property is set, otherwise false.
		 */
		public function __isset($name)
		{
			return isset($this->_properties[$name]);
		}

		/**
		 * Set the property with the provided name to the provided value.
		 * 
		 * @since 1.0.0
		 * 
		 * @access public
		 * @param  string $name  Name of the property to set.
		 * @param  string $value Value of the property to set.
		 * @return void
		 */
		public function __set($name, $value)
		{
			$this->_properties[$name] = $value;
		}

		/**
		 * Unset the property with the provided name.
		 * 
		 * @since 1.0.0
		 * 
		 * @access public
		 * @param  string $name Name of the property to unset.
		 * @return void
		 */
		public function __unset($name)
		{
			unset($this->_properties[$name]);
		}

		/**
		 * Get a default property based on the provided name.
		 * 
		 * @since 1.0.0
		 * 
		 * @access protected
		 * @param  string $name Name of the property to return.
		 * @return string       Empty string.
		 */
		protected function _default($name)
		{
			return '';
		}

		/**
		 * Push a value into a property array.
		 * 
		 * @since 1.0.0
		 * 
		 * @access public
		 * @param  string $name  Name of the property array to push the value into.
		 * @param  string $value Value to push into the property array.
		 * @return void
		 */
		public function _push($name, $value)
		{
			$property = $this->$name;

			if (is_array($property))
			{
				$property[] = $value;
			}

			$this->$name = $property;
		}
	}
}