#!/usr/bin/python
import MFRC522
import signal
import ConfigParser
import os

# Read config file
Config = ConfigParser.ConfigParser()
Config.read("/home/pi/MFRC522-python/rfidconfig.txt")

# From https://wiki.python.org/moin/ConfigParserExamples
def ConfigSectionMap(section):
  dict1 = {}
  options = Config.options(section)
  for option in options:
	try:
		dict1[option] = Config.get(section, option)
		if dict1[option] == -1:
			DebugPrint("skip: %s" % option)
	except:
		print("exception on %s!" % option)
		dict1[option] = None
  return dict1

# Send action to mplayer
def TagToMplayer (strTag):
  try:
	# Read tag attributes from config 
	strActionType = ConfigSectionMap(strTag)['actiontype']
	strFileUrlFunction = ConfigSectionMap(strTag)['fileurlfunction']
	strDescription = ConfigSectionMap(strTag)['description']

  	if  strActionType == "URL" or strActionType == "File":
	  strAction = "loadfile " + strFileUrlFunction
	  # Show what will be played
	  print ("Audio " + strDescription + " from " + strFileUrlFunction)

	elif strActionType == "Playlist":
	  strAction = "loadlist " + strFileUrlFunction
	  # Show what will be played
	  print ("Audio " + strDescription + " from " + strFileUrlFunction)

	elif strActionType == "Function":
	  strAction = strFileUrlFunction
 	  # Show what action will be performed
	  print ("Function " + strFileUrlFunction)

	elif strActionType == "OS":
	  strAction = ""
	  # Execute on OS, be careful, running as ROOT
	  os.system (strFileUrlFunction)

	else:
	  strAction = ""

	# Write to cfile
	with open(cfile, "w") as myfile:
	  myfile.write(strAction+"\n")
 
  except:
	pass

continue_reading = True
MIFAREReader = MFRC522.MFRC522()

# Control file used by mplayer
cfile = "/tmp/mplayer-control"

def end_read(signal, frame):
  global continue_reading
  continue_reading = False
  print "Ctrl+C captured, ending read."
  MIFAREReader.GPIO_CLEEN()

signal.signal(signal.SIGINT, end_read)

# Never stop reading
while continue_reading:
  (status,TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)
  if status == MIFAREReader.MI_OK:
    print "Card detected"
  (status,backData) = MIFAREReader.MFRC522_Anticoll()
  if status == MIFAREReader.MI_OK:
    strbackData = str(backData[0])+","+str(backData[1])+","+str(backData[2])+","+str(backData[3])+","+str(backData[4])

    print "Card read UID: " + strbackData

    # Do something (based on card and config file)
    TagToMplayer(strbackData)