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

/**
 * This class supports OSB exporting by rending the exportable items.
 *
 * @package    OSB
 * @subpackage Export
 * @category   Models
 * @author     Deon George
 * @copyright  (c) 2010 Open Source Billing
 * @license    http://dev.osbill.net/license.html
 */
class Model_Payment extends ORMOSB {
	// Relationships
	protected $_has_many = array(
		'payment_item'=>array('far_key'=>'id'),
		'invoice'=>array('through'=>'payment_item'),
	);
	protected $_belongs_to = array(
		'account'=>array(),
		'checkout'=>array('foreign_key'=>'checkout_plugin_id'),
	);

	protected $_sorting = array(
		'date_payment'=>'DESC'
	);

	protected $_display_filters = array(
		'date_payment'=>array(
			array('Config::date',array(':value')),
		),
		'total_amt'=>array(
			array('Currency::display',array(':value')),
		),
	);

	/**
	 * Find all items that are exportable.
	 *
	 * @param int $start List payments that were modified this many days ago
	 */
	public function export($start) {
		return ORM::factory('payment')
			->where('date_payment','>=',time()-$start*86400)
			->find_all();
	}

	/**
	 * Calculate the remaining balance available for this payment
	 */
	public function balance($format=FALSE) {
		$t = 0;

		foreach ($this->payment_item->find_all() as $pio)
			$t += $pio->alloc_amt;

		return $format ? Currency::display($this->total_amt-$t) : $this->total_amt-$t;
	}

	/**
	 * Return a list of invoices that this payment is applied to
	 */
	public function invoices() {
		$invoices = array();

		foreach ($this->payment_item->find_all() as $pio)
			array_push($invoices,$pio->invoice);

		return $invoices;
	}

	public function invoicelist() {
		return join(',',$this->invoices());
	}

	/** LIST FUNCTIONS **/

	public function list_unapplied() {
		$pi = array();

		// @todo database suffix needs to be dynamically calculated
		foreach (DB::Query(Database::SELECT,
			sprintf('SELECT A.id AS id,A.total_amt as total_amt FROM ab_%s A,ab_%s B WHERE A.site_id=B.site_id AND A.id=B.payment_id GROUP BY B.payment_id HAVING ROUND(SUM(B.alloc_amt),2)!=A.total_amt ORDER BY account_id,payment_id','payment','payment_item'))
			->execute() as $values) {

			array_push($pi,$values['id']);
		}

		return $this->where('id','IN',$pi)->order_by('account_id')->find_all();
	}
}
?>