<?php
/**
 * Nut class
 *
 * PHP version 5
 *
 * @category  PHP
 * @package   PSI_UPS
 * @author    Artem Volk <artvolk@mail.ru>
 * @author    Anders Häggström <hagge@users.sourceforge.net>
 * @copyright 2009 phpSysInfo
 * @license   http://opensource.org/licenses/gpl-2.0.php GNU General Public License
 * @version   SVN: $Id: class.nut.inc.php 661 2012-08-27 11:26:39Z namiltd $
 * @link      http://phpsysinfo.sourceforge.net
 */
 /**
 * getting ups information from upsc program
 *
 * @category  PHP
 * @package   PSI_UPS
 * @author    Artem Volk <artvolk@mail.ru>
 * @author    Anders Häggström <hagge@users.sourceforge.net>
 * @copyright 2009 phpSysInfo
 * @license   http://opensource.org/licenses/gpl-2.0.php GNU General Public License
 * @version   Release: 3.0
 * @link      http://phpsysinfo.sourceforge.net
 */
class Nut extends UPS
{
	/**
	 * internal storage for all gathered data
	 *
	 * @var array
	 */
	private $_output = array();

	/**
	 * get all information from all configured ups and store output in internal array
	 */
	public function __construct()
	{
		parent::__construct();
		if (defined('PSI_UPS_NUT_LIST') && is_string(PSI_UPS_NUT_LIST)) {
			if (preg_match(ARRAY_EXP, PSI_UPS_NUT_LIST)) {
				$upses = eval(PSI_UPS_NUT_LIST);
			} else {
				$upses = array(PSI_UPS_NUT_LIST);
			}
			foreach ($upses as $ups) {
				CommonFunctions::executeProgram('upsc', '-l '.trim($ups), $output);
				$ups_names = preg_split("/\n/", $output, -1, PREG_SPLIT_NO_EMPTY);
				foreach ($ups_names as $ups_name) {
					CommonFunctions::executeProgram('upsc', trim($ups_name).'@'.trim($ups), $temp);
					if (! empty($temp)) {
						$this->_output[trim($ups_name).'@'.trim($ups)] = $temp;
					}
				}
			}
		} else { //use default if address and port not defined
			CommonFunctions::executeProgram('upsc', '-l', $output);
			$ups_names = preg_split("/\n/", $output, -1, PREG_SPLIT_NO_EMPTY);
			foreach ($ups_names as $ups_name) {
				CommonFunctions::executeProgram('upsc', trim($ups_name), $temp);
				if (! empty($temp)) {
					$this->_output[trim($ups_name)] = $temp;
				}
			}
		}
	}

	/**
	 * parse the input and store data in resultset for xml generation
	 *
	 * @return array
	 */
	private function _info()
	{
		if (! empty($this->_output)) {
			foreach ($this->_output as $name=>$value) {
				$temp = preg_split("/\n/", $value, -1, PREG_SPLIT_NO_EMPTY);
				$ups_data = array();
				foreach ($temp as $value) {
					$line = preg_split('/: /', $value, 2);
					$ups_data[$line[0]] = isset($line[1]) ? trim($line[1]) : '';
				}
				$dev = new UPSDevice();
				//General
				$dev->setName($name);
				if (isset($ups_data['ups.model'])) {
					$dev->setModel($ups_data['ups.model']);
				}
				if (isset($ups_data['driver.name'])) {
					$dev->setMode($ups_data['driver.name']);
				}
				if (isset($ups_data['ups.status'])) {
					$dev->setStatus($ups_data['ups.status']);
				}

				//Line
				if (isset($ups_data['input.voltage'])) {
					$dev->setLineVoltage($ups_data['input.voltage']);
				}
				if (isset($ups_data['input.frequency'])) {
					$dev->setLineFrequency($ups_data['input.frequency']);
				}
				if (isset($ups_data['ups.load'])) {
					$dev->setLoad($ups_data['ups.load']);
				}

				//Battery
				if (isset($ups_data['battery.voltage'])) {
					$dev->setBatteryVoltage($ups_data['battery.voltage']);
				}
				if (isset($ups_data['battery.charge'])) {
					$dev->setBatterCharge($ups_data['battery.charge']);
				}
				if (isset($ups_data['battery.runtime'])) {
					$dev->setTimeLeft(round($ups_data['battery.runtime']/60, 2));
				}

				//Temperature
				if (isset($ups_data['ups.temperature'])) {
					$dev->setTemperatur($ups_data['ups.temperature']);
				}

				$this->upsinfo->setUpsDevices($dev);
			}
		}
	}

	/**
	 * get the information
	 *
	 * @see PSI_Interface_UPS::build()
	 *
	 * @return Void
	 */
	public function build()
	{
		$this->_info();
	}
}