<?php
/**
 * Open Hardware Monitor sensor class
 *
 * PHP version 5
 *
 * @category  PHP
 * @package   PSI_Sensor
 * @author    Michael Cramer <BigMichi1@users.sourceforge.net>
 * @copyright 2009 phpSysInfo
 * @license   http://opensource.org/licenses/gpl-2.0.php GNU General Public License
 * @version   SVN: $Id: class.ohm.inc.php 661 2012-08-27 11:26:39Z namiltd $
 * @link      http://phpsysinfo.sourceforge.net
 */
 /**
 * getting information from Open Hardware Monitor
 *
 * @category  PHP
 * @package   PSI_Sensor
 * @author    Michael Cramer <BigMichi1@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 OHM extends Sensors
{
	/**
	 * holds the COM object that we pull all the WMI data from
	 *
	 * @var Object
	 */
	private $_buf = array();

	/**
	 * fill the private content var
	 */
	public function __construct()
	{
		parent::__construct();
		$_wmi = null;
		// don't set this params for local connection, it will not work
		$strHostname = '';
		$strUser = '';
		$strPassword = '';
		try {
			// initialize the wmi object
			$objLocator = new COM('WbemScripting.SWbemLocator');
			if ($strHostname == "") {
				$_wmi = $objLocator->ConnectServer($strHostname, 'root\OpenHardwareMonitor');
			} else {
				$_wmi = $objLocator->ConnectServer($strHostname, 'root\OpenHardwareMonitor', $strHostname.'\\'.$strUser, $strPassword);
			}
		} catch (Exception $e) {
			$this->error->addError("WMI connect error", "PhpSysInfo can not connect to the WMI interface for OpenHardwareMonitor data.");
		}
		if ($_wmi) {
			$this->_buf = CommonFunctions::getWMI($_wmi, 'Sensor', array('Parent', 'Name', 'SensorType', 'Value'));
		}
	}

	/**
	 * get temperature information
	 *
	 * @return void
	 */
	private function _temperature()
	{
		if ($this->_buf) foreach ($this->_buf as $buffer) {
			if ($buffer['SensorType'] == "Temperature") {
				$dev = new SensorDevice();
				$dev->setName($buffer['Parent'].' '.$buffer['Name']);
				$dev->setValue($buffer['Value']);
				$this->mbinfo->setMbTemp($dev);
			}
		}
	}

	/**
	 * get voltage information
	 *
	 * @return void
	 */
	private function _voltage()
	{
		if ($this->_buf) foreach ($this->_buf as $buffer) {
			if ($buffer['SensorType'] == "Voltage") {
				$dev = new SensorDevice();
				$dev->setName($buffer['Parent'].' '.$buffer['Name']);
				$dev->setValue($buffer['Value']);
				$this->mbinfo->setMbVolt($dev);
			}
		}
	}

	/**
	 * get fan information
	 *
	 * @return void
	 */
	private function _fans()
	{
		if ($this->_buf) foreach ($this->_buf as $buffer) {
			if ($buffer['SensorType'] == "Fan") {
				$dev = new SensorDevice();
				$dev->setName($buffer['Parent'].' '.$buffer['Name']);
				$dev->setValue($buffer['Value']);
				$this->mbinfo->setMbFan($dev);
			}
		}
	}

	/**
	 * get power information
	 *
	 * @return void
	 */
	private function _power()
	{
		if ($this->_buf) foreach ($this->_buf as $buffer) {
			if ($buffer['SensorType'] == "Power") {
				$dev = new SensorDevice();
				$dev->setName($buffer['Parent'].' '.$buffer['Name']);
				$dev->setValue($buffer['Value']);
				$this->mbinfo->setMbPower($dev);
			}
		}
	}

	/**
	 * get the information
	 *
	 * @see PSI_Interface_Sensor::build()
	 *
	 * @return Void
	 */
	public function build()
	{
		$this->_temperature();
		$this->_voltage();
		$this->_fans();
		$this->_power();
	}
}