# This script will monitor a list of sensors and record on/off timestamps.
# The file and sensors are passed from the caller, so this can be left as a
# static program and users should just copy the bottom part to pass the parameters.
#
# Author: Ken Cameron, copyright 2009
# Part of the JMRI distribution
#
# The next line is maintained by CVS, please don't change it
# $Revision: 1.1 $

import java
import jarray
import java.util.Calendar

# setup listeners for a list of sensors, record each change to a logfile
class LogSensors(java.beans.PropertyChangeListener) :
	# initialize variables
	sensorList = []
	logFileName = None
	
	def setFileName(self, fn) :
		print "log file: " + fn
		self.logFileName = fn
		return

	def addSensor(self, sName) :
		s = sensors.getSensor(sName)
		if (s == None) :
			print "Invalid sensor name: " + sName + "\n"
		else :
			self.sensorList.append(sName)
			s.addPropertyChangeListener(self)
			print("added " + sName + " to list.\n")
		return

	# it doesn't matter which changed, we record the state of each
	def propertyChange(self, event) :
		time = java.util.Calendar.getInstance()
		txt = '"' + self.formatDate(time) + '","' + self.formatTime(time) + '"'
		for s in self.sensorList :
			sPtr = sensors.getSensor(s)
			if sPtr == None :
				txt = txt + ',"Invalid"'
			else :
				txt = txt + ',"' + self.getKnownStateText(sPtr) + '"'
		f = open(self.logFileName, 'a')
		wasPt = f.tell()
		if (wasPt == 0) :
			hdr = '"Date","Time"'
			for i in self.sensorList :
				hdr = hdr + ',"' + i + '"'
			f.write(hdr + '\n')
		f.write(txt + "\n")
		isPt = f.tell()
		f.close()
		return
		
	# method for creating a TimeStamp.
	def formatTime(self, ts):
		ptHrs = str(ts.get(java.util.Calendar.HOUR_OF_DAY))
		if len(ptHrs) == 1 :
			ptHrs = "0" + ptHrs

		ptMins = str(ts.get(java.util.Calendar.MINUTE))
		if len(ptMins) == 1 :
			ptMins = "0" + ptMins

		ptSecs = str(ts.get(java.util.Calendar.SECOND))
		if len(ptSecs) == 1 :
			ptSecs = "0" + ptSecs
		ptMs = str(ts.get(java.util.Calendar.MILLISECOND))
		pTime = ptHrs + ":" + ptMins + ":" + ptSecs + "." + ptMs
		return pTime

	# method for creating a DateStamp.
	def formatDate(self, ts):
		ptDays = str(ts.get(java.util.Calendar.DATE))
		if len(ptDays) == 1 :
			ptDays = "0" + ptDays

		ptMonths = str(ts.get(java.util.Calendar.MONTH) + 1)
		if len(ptMonths) == 1 :
			ptMonths = "0" + ptMonths

		ptYears = str(ts.get(java.util.Calendar.YEAR))
		pDate = ptMonths + "/" + ptDays + "/" + ptYears
		return pDate

	# convert KnownState to a text
	def getKnownStateText(self, ptr) :
		state = ptr.getKnownState()
		x = '??'
		if (state == ACTIVE) :
			x = 'ACTIVE'
		elif (state == INACTIVE) :
			x = 'INACTIVE'
		else :
			x = 'UNKNOWN'
		return x

#
# USAGE: 
#	1. Add this script to your system startup.
#	2. Copy the below lines into a new script in your local resources space,
#		like the same directory as your Config xml files.
#	3. remove the double comments ## and edit to your own needs
#
# create one of these
##a = LogSensors()

# and start it running
##a.setFileName("/c:/Temp/CnyModSensorData.csv")
##a.addSensor("LS281")
##a.addSensor("LS282")
##a.addSensor("LS283")
##a.addSensor("LS284")