<?php
logger(DEBUG, _("Including db.php"));

class db extends mysqli
{
	public $mysqlServer = "127.0.0.1";		// Your production server
	public $username = "moha";
	public $passwd = "MysqlMoha";
	public $database = "moha";
	public $result;

	function __construct()
	{
		global $testMode;
		$flagError = false;
		if ($testMode)
		{
			$this->mysqlServer = "192.168.1.253"; 	// Your test server
		}
		while ($this->connect($this->mysqlServer, $this->username, $this->passwd, $this->database) === false)
		{
			logger(ERROR,_("Connection to sql server error :") . $this->connect_error, __FILE__ . ":" . __LINE__);
			sleep(5);
			$flagError = true;
		}
		if ($flagError === true)
		{
			logger(ERROR, _("Connection to sql server ready"), __FILE__ . ":" . __LINE__);
		}
		$this->result = new mysqli_result($this);
	}

	function protect($string)
	{
		return $this->real_escape_string($string);
	}

	function logProperty($device, $property, $value, $oldValue = 0)
	{
		global $mohaDB, $properties2log, $testMode;
		$precision = 0;
		//echo "############## logProperty ################\nproperty => " . $propertyTree .EOL;
		if (array_key_exists($property, $properties2log))
		{
			//echo "logging in database";
			//var_dump($device);
			$ieeeAddress = $device->ieeeAddress;
			//print_r($ieeeAddress);
			$query = "INSERT INTO logs (device, property, value) VALUES('" . $this->protect($ieeeAddress) . "', '" . $this->protect($property) . "', '" . $this->protect(bool2string($value)) . "')";
			//echo $query . EOL;
			if (is_numeric($value) and !empty($properties2log[$property]))
			{
				// calculate a min/max value for storing data
				$minMax = $properties2log[$property];
				if (is_callable($minMax))
				{
					$minMax = $minMax($value);
				}
				var_dump($value) . EOL;
				var_dump($minMax) . EOL;
				var_dump($oldValue) . EOL;
				if ( !is_numeric($oldValue))	$oldValue = 0;
				//echo "minMax = " .$minMax . EOL;
				//echo "oldValue = " . $oldValue . EOL;
				//echo "Value = " . $value . EOL;
				if ($value >= $oldValue - $minMax and $value <= $oldValue + $minMax)
				{
					//echo "========>>>>>>>>>not changed" . EOL;
					return true;
				}
			}
			if ($testMode)
			{
				logger(INFO, _("Test mode on: not storing in DB "), __FILE__ . ":" . __LINE__);
			}else
			{
				if(!$this->result = $this->query($query))
				{
					logger(ERROR, _("mysql query errror: ") . $this->error, __FILE__ . ":" . __LINE__);
				}
			}
			logger(INFO, sprintf(_("New value (%s) of property: '%s' of device: %s stored in database"), bool2string($value), $property, $device->friendlyName), __FILE__ . ":" . __LINE__);
		}
	}

	function moyenne($deviceObject, $property, $time)
	{
		$query = "SELECT AVG(value) as value FROM logs WHERE device='" . $deviceObject->ieeeAddress . "' AND property='" . $property . "' AND TIMEDIFF(NOW(), date) < '00:" . $time . "'";
		if(!$this->result = $this->query($query))
		{
			logger(ERROR, _("mysql query errror: ") . $this->error, __FILE__ . ":" . __LINE__);
		}

		$value = $this->result->fetch_array(MYSQLI_NUM);
		//var_dump($value);
		return $value[0];
	}
}

$mohaDB = new db();

?>