<?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)
	{
		global $mohaDB, $properties2log, $testMode;
		$precision = 0;

		//echo "############## logProperty ################\nproperty => " . $propertyTree .EOL;
		//echo "logging in database";
		//var_dump($device);
		$ieeeAddress = $device->ieeeAddress;
		//print_r($ieeeAddress);
		//echo $query . EOL;
		if (is_numeric($value) and !empty($properties2log[$property]))
		{
			if (!array_key_exists("lastValueLogged", $device->properties[$property]))
			{
				$oldValue = -1;
			}else
			{
				$oldValue = $device->properties[$property]["lastValueLogged"];
			}
			// calculate a min/max value for storing data
			$r = $properties2log[$property];
			if (is_callable($r))
			{
				$minMax = $r($value);
			}else
			{
				$minMax = $r;
			}
			logger(DEBUG, _("minMax = " . $minMax), __FILE__ . ":" . __LINE__);
			//var_dump($value) . EOL;
			//var_dump($minMax) . EOL;
			//var_dump($oldValue) . EOL;
			//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
		{
			$query = "INSERT INTO logs (device, property, value) VALUES('" . $this->protect($ieeeAddress) . "', '" . $this->protect($property) . "', '" . $this->protect(bool2string($value)) . "')";
			if(!$this->result = $this->query($query))
			{
				logger(ERROR, _("mysql query errror: ") . $this->error, __FILE__ . ":" . __LINE__);
			}
			$device->properties[$property]["lastValueLogged"] = $value;
			logger(INFO, sprintf(_("New value (%s) of property: '%s' of device: %s stored in database"), bool2string($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='" . $property . "' AND TIMEDIFF(NOW(), date) < '00:" . str_pad($time, 2, "0", STR_PAD_LEFT ) . "'";
		logger(DEBUG, _("query is: ") . $query, __FILE__ . ":" . __LINE__);
		if(!$this->result = $this->query($query))
		{
			logger(ERROR, _("mysql query errror: ") . $this->error, __FILE__ . ":" . __LINE__);
			return 1;
		}else
		{
			$value = $this->result->fetch_array(MYSQLI_NUM);
			//var_dump($value);
			logger(DEBUG, _("result is: ") . print_r($value[0], true), __FILE__ . ":" . __LINE__);
			return $value[0];
		}
	}
}

$mohaDB = new db();

?>