<?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 {
	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'),
	);

	public static $metrics = array(
		'down_peak'=>'base_down_peak',
		'down_offpeak'=>'base_down_offpeak',
		'up_peak'=>'base_up_peak',
		'up_offpeak'=>'base_up_offpeak',
		'peer'=>'base_down_peak',
		'internal'=>'base_down_offpeak',
	);

	private $_friendly = array(
		'base_up_peak'=>'UP Peak',
		'base_up_offpeak'=>'UP Offpeak',
		'base_down_peak'=>'DOWN Peak',
		'base_down_offpeak'=>'DOWN Offpeak',
		'base_peer'=>'Peer',
		'base_internal'=>'Internal',
	);

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

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

		return $result;
	}

	public function date() {
		return strtotime($this->date);
	}

	public function friendly($name) {
		return isset($this->_friendly[$name]) ? $this->_friendly[$name] : $name;
	}

	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)->find_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;
	}

	/**
	 * Generate the select statements to SUM up the traffic metrics that we use
	 */
	public function selectsummetric() {
		foreach (Model_Service_Plugin_Adsl_Traffic::$metrics as $metric=>$v)
			$this->select(array("sum(".$metric.")",$metric));

		return $this;
	}

	/**
	 * Total up the traffic into the metrics we use
	 */
	public function total() {
		$result = 0;

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

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

		return $result;
	}

	/**
	 * Collapse our traffic data into an array as per $this->_metric
	 */
	public function traffic_data() {
		$result = array();

		foreach (Model_Service_Plugin_Adsl_Traffic::$metrics as $metric=>$v) {
			if (! isset($result[$v]))
				$result[$v] = 0;

			$result[$v] += $this->{$metric};
		}

		return $result;
	}

	/**
	 * Find the last traffic record
	 */
	public function find_last() {
		return $this->order_by('date','DESC')->order_by('time','DESC')->find();
	}
}
?>