<?php
logger(DEBUG, _("Including events.php"), __FILE__ . ":" . __LINE__);

/*	for all functions, datetime parameter format is 'dd/mm/yy hh:mm:ss'			*/


function checkEvents()
{
	global $logLevel, $events;
	$oldLevel = $logLevel;
	//$logLevel = DEBUG;
	$exception = false;
	if ($events === null)
	{
		$events = array();
	}
	foreach ($events as $key => &$event)
	{
		$now = now();
		if (!empty($event->startDatetime))
		{
			logger(DEBUG, _("StartDatetime is set"), __FILE__ . ":" . __LINE__);
			if($event->dateTimeEvent < $now)
			{
				logger(DEBUG, _("Event must be executed"), __FILE__ . ":" . __LINE__);
				if (!empty($event->exceptionInterval))
				{
					logger(DEBUG, _("Testing exceptions"), __FILE__ . ":" . __LINE__);
					foreach($event->exceptionInterval as $key => $value)
					{
						if($now > $value->start and $now < $value->end)
						{
							$exception = true;
						}elseif($now > $value->stop)
						{
							unset($event->exceptionInterval[$key]);
						}
					}
				}
				if ($exception === false)
				{
					if (is_callable($this->function))
					{
						$this->function($event);
					}else
					{
						logger(DEBUG, sprintf(_("sending command set %s => %s  for %s"), $event->param ,bool2string($event->value), $event->device->friendlyName), __FILE__ . ":" . __LINE__);
						publish(mktopic($event->device), array($event->param => $event->value), "set");
						if ($event->method !== null)	$event->device->properties[$event->param]["method"] = $event->method;
						if (($event->dateTimeEvent->add($event->recurrenceInterval)) === false)
						{
							logger(ERROR, _("Error in adding interval to event recurrence. event: ") . $key, __FILE__ . ":" . __LINE__);
						}
					}
				}
			}
		}elseif (!empty($event->dateTimeEvent) and $event->dateTimeEvent < now())
		{
				logger(DEBUG, sprintf(_("Sending command set %s => %s to %s"),$event->param,  bool2string($event->value), $event->device->friendlyName), __FILE__ . ":" . __LINE__);
				$mid = publish(mktopic($event->device), array($event->param => $event->value), "set");	//, $key);null
				$event->published = $now;
				if ($event->method !== null)
				{
					$event->device->properties[$event->param]["method"] = $event->method;
				}
				//echo "#################################\nUnsetting event $key \n###########################" . EOL;
				unset($events[$key]);
		}
	}
	//print_r($events);
	//$logLevel = $oldLevel;
}

// datetime format : "yyyy-mm-dd hh:mm:ss"

function setOneshotEvent(device &$deviceObject, string $datetime, $property, $value, $replace=false, $method=null)
{
	global $events;
	$events[] = new event;
	$key = key($events);
	$events[$key]->dateTimeEvent = new dateTime($datetime);
	$events[$key]->ieeeAddress = $deviceObject->ieeeAddress;
	$events[$key]->topic = $deviceObject->topic;
	$events[$key]->param = $property;
	$events[$key]->value = $value;
	$events[$key]->device = & $deviceObject;
	if ($method !==null) $events[$key]->method =$method;
}

// startDatetime and stopDatetime format : "yyyy-mm-dd hh:mm:ss"

function setRecurrentEvent(device &$deviceObject, string $property, $value, string $startDatetime, string $stopDatetime, int $hours, int $minutes, int $seconds, int $days, int $weeks, int $months, int $years, int $method = null)
{
	global $events;
	$string = "P";
	if (!empty($years))		$string .= $years . "Y";
	if (!empty($months))	$string .= $months . "M";
	if (!empty($week))		$string .= $week . "W";
	if (!empty($days))		$string .= $days . "D";
	$string .= "T";
	if (!empty($hours))  $string .= $hours . "H";
	if (!empty($months))  $string .= $months . "M";
	if (!empty($seconds))  $string .= $seconds . "S";

	$event = new event;

	$event->recurrenceInterval 	= new DateInterval($string);
	$event->startDatetime 		= new datetime($startDatetime);
	$event->stopDatetime		= new datetime($stopDatetime);
	$event->ieee_address		= $deviceObject->ieeeAddress;
	$event->topic				= $deviceObject->topic;
	$event->device				= & $deviceObject;
	$event->param				= $property;
	$event->value				= $value;
	$event->dateTimeEvent 		= $event->startDatetime;
	if (($event->dateTimeEvent->add($event->recurrenceInterval)) === false)
	{
		logger(ERROR, _("Error in event recurrence. event: ") . $key, __FILE__ . ":" . __LINE__);

	}
	if ($method !== null)	$event->method = $method;
}

function setDelay(device &$deviceObject, float $delay, string $unit, string $property, $value, bool $replace=false, int $method = null)
{
	global $events, $logLevel;
	$oldLevel = $logLevel;
	$logLevel = DEBUG;
	$datetime = new dateTime();
	strtolower($unit);
	switch($unit)
	{
		case "second":
			$s = "S";
			break;
		case "minute":
			$s = "M";
			break;
		case "hour":
			$s = "H";
			break;
		case "day":
			$s = "D";
			break;
		case "week":
			$s = "W";
			break;
		case "month":
			$s = "M";
			break;
		case "year":
			$s = "Y";
			break;
	}
	if (empty($s))
	{
		logger(ERROR, _("setDelay error: unit is empty"), __FILE__ . ":" . __LINE__);
	}
	if (($datetime->add(new DateInterval('PT'. $delay . $s))) === false)
	{
		logger(ERROR, _("setDelay error: datetime->add"), __FILE__ . ":" . __LINE__);
	}
	//print_r($datetime);
	if ($replace)
	{
		$eventKey = searchEvent($deviceObject, $property, $value);
		if ($eventKey !== false) deleteEvent($eventKey);
	}
	//$dt = $datetime->format("Y-m-d\TH:i:s\Z");
	$events[] = new event;
	$key = array_key_last($events);
	$events[$key]->dateTimeEvent = $datetime;
	$events[$key]->ieeeAddress = $deviceObject->ieeeAddress;
	$events[$key]->topic = $deviceObject->topic;
	$events[$key]->param = $property;
	$events[$key]->value = $value;
	$events[$key]->device = & $deviceObject;
	if ($method !== null) $events[$key]->method = $method;
	logger (DEBUG, _('Setting new delay in $events[]'), __FILE__ . ":" . __LINE__);
	//print_r($events[$key]);
	$logLevel = $oldLevel;
}

function removeEvent(device $deviceObject, string $property , $value, int $method = null)
{
	global $events;
	$eventKey = searchEvent($deviceObject, $property , $value);
	if ($eventKey !== false)
	{
		if ($method !== null)	$events[$eventKey]->device->method = $method;
		deleteEvent($eventKey);
	}
}

function searchEvent(device $deviceObject, string $property , $value)
{
	global $events;
	logger(DEBUG, sprintf(_("searching event for device %s, property %s and value %s"), $deviceObject->friendlyName, $property, bool2string($value)), __FILE__ . ":" . __LINE__);
	foreach($events as $key => $event)
	{
		//echo "Event : $event => $value" . EOL;
		//echo "===>";print_r($event); echo EOL;
		if($event->topic == $deviceObject->topic and $event->param == $property and $event->value == $value and $event->ieeeAddress == $deviceObject->ieeeAddress)
		{
			return $key;
		}
	}
	return false;
}

// warning delete event does not manage method of the device (IDLE, )
function deleteEvent(int $eventKey)
{
	global $events;
	if ($eventKey !== false)
	{
		logger(INFO, _("delete event key =") . $eventKey, __FILE__ . ":" . __LINE__);
		if (array_key_exists($eventKey, $events))
		{
			unset ($events[$eventKey]);
		}else
		{
			logger(ERROR, _("event key does not exists: ") . $eventKey, __FILE__ . ":" . __LINE__);
		}

	}
}


?>