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<?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 2, or (at your option) any later version
 * @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 2, or (at your option) any later version
 * @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, PSI_DEBUG);
                $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), $temp, PSI_DEBUG);
                    if (! empty($temp)) {
                        $this->_output[trim($ups_name).'@'.trim($ups)] = $temp;
                    }
                }
            }
        } else { //use default if address and port not defined
            if (!defined('PSI_EMU_HOSTNAME')) {
                CommonFunctions::executeProgram('upsc', '-l', $output, PSI_DEBUG);
            } else {
                CommonFunctions::executeProgram('upsc', '-l '.PSI_EMU_HOSTNAME, $output, PSI_DEBUG);
            }
            $ups_names = preg_split("/\n/", $output, -1, PREG_SPLIT_NO_EMPTY);
            foreach ($ups_names as $ups_name) {
                CommonFunctions::executeProgram('upsc', trim($ups_name), $temp, PSI_DEBUG);
                if (! empty($temp)) {
                    $this->_output[trim($ups_name)] = $temp;
                }
            }
        }
    }

    /**
     * parse the input and store data in resultset for xml generation
     *
     * @return void
     */
    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 $valueTemp) {
                    $line = preg_split('/: /', $valueTemp, 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();
    }
}