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

/**
 * This class supports Services Traffic for ADSL
 *
 * @package    ADSL
 * @category   Models
 * @author     Deon George
 * @copyright  (c) 2009-2013 Open Source Billing
 * @license    http://dev.osbill.net/license.html
 */
class Model_Service_Plugin_Adsl_Traffic extends ORM_OSB {
	protected $_table_name = 'service__adsl_traffic';
	protected $_primary_key = 'service';
	protected $_disable_wild_select = TRUE;

	protected $_created_column = FALSE;
	protected $_updated_column = FALSE;

	protected $_has_one = array(
		'plan'=>array('model'=>'Service_Plugin_Adsl','foreign_key'=>'service_username','far_key'=>'service'),
	);

	private $metrics = array(
		'up_peak',
		'up_offpeak',
		'down_peak',
		'down_offpeak',
		'peer',
		'internal',
	);

	public function rules() {
		$result = parent::rules();

		// We don use the "ID" field.
		unset($result['id']);

		return $result;
	}

	public function save(Validation $validation = NULL) {
		// If all our values are zero/NULL, we'll ignore if our previous one was.
		if ($this->total() !== 0)
			return parent::save($validation);

		$l = ORM::factory($this->_object_name)->where('service','=',$this->service)->where('supplier_id','=',$this->supplier_id)->list_last();

		if ($l->total() !== 0)
			return parent::save($validation);

		// Fake our save, since the previous value is 0.
		$this->_loaded = $this->_saved = TRUE;
		$this->_changed = array();
		$this->_original_values = $this->_object;

		return $this;
	}

	public function total() {
		$result = 0;

		foreach ($this->metrics as $metric) {
			if (is_null($this->$metric))
				$this->$metric = 0;

			$result += $this->$metric;
		}

		return $result;
	}

	public function traffic(Model_Product_Plugin_Adsl $plan) {
		// Roll up the charges according to the product plan configuration
		return ADSL::allowance(array(
			'base_down_peak'=>is_null($plan->base_down_peak) ? NULL : $this->down_peak,
			'base_down_offpeak'=>is_null($plan->base_down_offpeak) ? NULL : $this->down_offpeak,
			'base_up_peak'=>is_null($plan->base_up_peak) ? NULL : $this->up_peak,
			'base_up_offpeak'=>is_null($plan->base_up_offpeak) ? NULL : $this->up_offpeak,
			'extra_down_peak'=>$plan->extra_down_peak,
			'extra_down_offpeak'=>$plan->extra_down_offpeak,
			'extra_up_peak'=>$plan->extra_up_peak,
			'extra_up_offpeak'=>$plan->extra_up_offpeak,
		));
	}

	public function list_last() {
		return $this->order_by('date','DESC')->order_by('time','DESC')->find();
	}
}
?>