<?php defined('SYSPATH') or die('No direct access allowed.');

/**
 * This class supports OSB listing products
 *
 * @package    OSB
 * @subpackage Product
 * @category   Models
 * @author     Deon George
 * @copyright  (c) 2010 Open Source Billing
 * @license    http://dev.osbill.net/license.html
 */
class Model_Product extends ORMOSB {
	// @todo this doesnt have our site_id when getting the translation
	protected $_has_many = array(
		'product_translate'=>array('far_key'=>'id'),
	);

	protected $_sorting = array(
		'position'=>'asc',
		'sku'=>'asc',
	);

	protected $_display_format = array(
		'price_type'=>array('StaticList_PriceType::display'=>array()),
	);

	/**
	 * The feature summary should be implemented in child objects.
	 * It is displayed on the product overview page, as a summary of the products features.
	 */
	protected function _feature_summary() {
		throw new Kohana_Exception(':method not defined in child class :class',array(':method'=>__METHOD__,':class'=>get_class($this)));
	}

	/**
	 * The summary should be implemented in child objects.
	 */
	protected function _summary() {
		return _('No Description');
	}

	/**
	 * Return the object of the product plugin
	 */
	private function plugin() {
		if (! $this->prod_plugin_file)
			return NULL;

		if (! is_numeric($this->prod_plugin_data))
			throw new Kohana_Exception('Missing plugin_id for :product (:type)',array(':product'=>$this->id,':type'=>$this->prod_plugin_file));

		$spn = sprintf('%s_%s',get_class($this),$this->prod_plugin_file);
		return new $spn($this->prod_plugin_data);
	}

	/**
	 * Get the product name, after translating
	 */
	public function name() {
		return $this->product_translate->find()->display('name');
	}

	/**
	 * This will render the product feature summary information
	 */
	public function feature_summary() {
		if (is_null($plugin = $this->plugin()))
			return HTML::nbsp('');
		else
			return $plugin->_feature_summary();
	}

	/**
	 * Get the summary description
	 *
	 * Generally this is used on the invoice summary page
	 */
	public function summary() {
		if (is_null($plugin = $this->plugin()))
			return _('Other');
		else
			return $plugin->_summary();
	}

	/**
	 * Return the products for a given category
	 * @todo This shouldnt be here.
	 */
	public function category($cat) {
		$results = array();
		foreach ($this->where('active','=',TRUE)->find_all() as $po) {
			if ($c = unserialize($po->avail_category_id) AND in_array($cat,$c))
				array_push($results,$po);
		}

		return $results;
	}

	/**
	 * Return the best price to the uesr based on the users group's memberships
	 * @todo This needs to be tested with more than one price group enabled
	 */
	public function get_price_array() {
		if (! $this->loaded())
			throw new Kohana_Exception('Call to :method where no object loaded?',array(':method'=>__METHOD__));

		// Figure out our eligable groups
		// @todo Need to work out our default groups elsewhere, not in product
		// All users are members of the all user group "0"
		$groups = array(0);
		$pg = unserialize($this->price_group);
		if (Auth::instance()->logged_in())
			foreach (Auth::instance()->get_user()->group->find_all() as $go)
				array_push($groups,$go->id);

		// Work out the best price for the user
		$price = array();
		foreach (unserialize($this->price_group) as $bill_freq => $pg) {
			if ($pg['show'])
				foreach ($groups as $gid) {
					if (! empty($pg[$gid])) {
						if (empty($price[$bill_freq]['price_base'])
							OR ($pg[$gid]['price_base'] AND $price[$bill_freq]['price_base'] > $pg[$gid]['price_base'])) {
							$price[$bill_freq]['price_setup'] = $pg[$gid]['price_setup'];
							$price[$bill_freq]['price_base'] = $pg[$gid]['price_base'];
						}
					}
				}
		}

		return $price;
	}

	/**
	 * Test if the product is a TRIAL product
	 * (price_type == 2)
	 *
	 * @return boolean
	 */
	public function is_trial() {
		if ($this->price_type == 2)
			return TRUE;
		else
			return FALSE;
	}

	public function show_thumb() {
		$mediapath = Route::get('default/media');

		$thumb = $mediapath->uri(array('file'=>'img/thumbnails/'.$this->thumbnail));

		// @todo Change the ALT to the product name.
		echo HTML::image($thumb,array('alt'=>_('Thumb Nail')));
	}
}
?>