from Components.config import config, ConfigSubsection, ConfigSelection, ConfigPIN, ConfigText, ConfigYesNo, ConfigSubList, ConfigInteger
from Screens.InputBox import PinInput
from Screens.MessageBox import MessageBox
from Tools.BoundFunction import boundFunction
from ServiceReference import ServiceReference
from Tools import Notifications
from Tools.Directories import resolveFilename, SCOPE_CONFIG
import time

def InitParentalControl():
	config.ParentalControl = ConfigSubsection()
	config.ParentalControl.configured = ConfigYesNo(default = False)
	config.ParentalControl.mode = ConfigSelection(default = "simple", choices = [("simple", _("simple")), ("complex", _("complex"))])
	config.ParentalControl.storeservicepin = ConfigSelection(default = "never", choices = [("never", _("never")), ("5", _("5 minutes")), ("30", _("30 minutes")), ("60", _("60 minutes")), ("standby", _("until standby/restart"))])
	config.ParentalControl.servicepinactive = ConfigYesNo(default = False)
	config.ParentalControl.setuppinactive = ConfigYesNo(default = False)
	config.ParentalControl.type = ConfigSelection(default = "blacklist", choices = [("whitelist", _("whitelist")), ("blacklist", _("blacklist"))])
	config.ParentalControl.setuppin = ConfigPIN(default = -1)
	
	config.ParentalControl.retries = ConfigSubsection()
	config.ParentalControl.retries.setuppin = ConfigSubsection()
	config.ParentalControl.retries.setuppin.tries = ConfigInteger(default = 3)
	config.ParentalControl.retries.setuppin.time = ConfigInteger(default = 3)	
	config.ParentalControl.retries.servicepin = ConfigSubsection()
	config.ParentalControl.retries.servicepin.tries = ConfigInteger(default = 3)
	config.ParentalControl.retries.servicepin.time = ConfigInteger(default = 3)
#	config.ParentalControl.configured = configElement("config.ParentalControl.configured", configSelection, 1, (("yes", _("yes")), ("no", _("no"))))
	#config.ParentalControl.mode = configElement("config.ParentalControl.mode", configSelection, 0, (("simple", _("simple")), ("complex", _("complex"))))
	#config.ParentalControl.storeservicepin = configElement("config.ParentalControl.storeservicepin", configSelection, 0, (("never", _("never")), ("5_minutes", _("5 minutes")), ("30_minutes", _("30 minutes")), ("60_minutes", _("60 minutes")), ("restart", _("until restart"))))
	#config.ParentalControl.servicepinactive = configElement("config.ParentalControl.servicepinactive", configSelection, 1, (("yes", _("yes")), ("no", _("no"))))
	#config.ParentalControl.setuppinactive = configElement("config.ParentalControl.setuppinactive", configSelection, 1, (("yes", _("yes")), ("no", _("no"))))
	#config.ParentalControl.type = configElement("config.ParentalControl.type", configSelection, 0, (("whitelist", _("whitelist")), ("blacklist", _("blacklist"))))
	#config.ParentalControl.setuppin = configElement("config.ParentalControl.setuppin", configSequence, "0000", configSequenceArg().get("PINCODE", (4, "")))

	config.ParentalControl.servicepin = ConfigSubList()

	for i in (0, 1, 2):
		config.ParentalControl.servicepin.append(ConfigPIN(default = -1))
		#config.ParentalControl.servicepin.append(configElement("config.ParentalControl.servicepin.level" + str(i), configSequence, "0000", configSequenceArg().get("PINCODE", (4, ""))))

class ParentalControl:
	def __init__(self):
		self.open()
		self.serviceLevel = {}
		self.configInitialized = False
		
	def addWhitelistService(self, service):
		self.whitelist.append(service)
	
	def addBlacklistService(self, service):
		self.blacklist.append(service)

	def setServiceLevel(self, service, level):
		self.serviceLevel[service] = level

	def deleteWhitelistService(self, service):
		self.whitelist.remove(service)
		if self.serviceLevel.has_key(service):
			self.serviceLevel.remove(service)
	
	def deleteBlacklistService(self, service):
		self.blacklist.remove(service)
		if self.serviceLevel.has_key(service):
			self.serviceLevel.remove(service)

	def isServicePlayable(self, ref, callback):
		if not config.ParentalControl.configured.value or not config.ParentalControl.servicepinactive.value:
			return True
		#print "whitelist:", self.whitelist
		#print "blacklist:", self.blacklist
		#print "config.ParentalControl.type.value:", config.ParentalControl.type.value
		#print "not in whitelist:", (service not in self.whitelist)
		#print "checking parental control for service:", ref.toString()
		service = ref.toCompareString()
		if (config.ParentalControl.type.value == "whitelist" and service not in self.whitelist) or (config.ParentalControl.type.value == "blacklist" and service in self.blacklist):
			if self.configInitialized == False or self.storeServicePin != config.ParentalControl.storeservicepin.value:
				self.getConfigValues()
			if self.sessionPinEntered == True:
				return True
			elif self.checkPinInterval == True:
				if self.currentPinStoreTime >= (self.getCurrentTimeStamp() - self.pinIntervalSeconds ):
					return True 
			self.callback = callback
			#print "service:", ServiceReference(service).getServiceName()
			levelNeeded = 0
			if self.serviceLevel.has_key(service):
				levelNeeded = self.serviceLevel[service]
			pinList = self.getPinList()[:levelNeeded + 1]
			Notifications.AddNotificationWithCallback(boundFunction(self.servicePinEntered, ref), PinInput, triesEntry = config.ParentalControl.retries.servicepin, pinList = pinList, service = ServiceReference(ref).getServiceName(), title = _("this service is protected by a parental control pin"), windowTitle = _("Parental control"))
			return False
		else:
			return True
		
	def protectService(self, service):
		#print "protect"
		#print "config.ParentalControl.type.value:", config.ParentalControl.type.value
		if config.ParentalControl.type.value == "whitelist":
			if service in self.whitelist:
				self.deleteWhitelistService(service)
		else: # blacklist
			if service not in self.blacklist:
				self.addBlacklistService(service)
		#print "whitelist:", self.whitelist
		#print "blacklist:", self.blacklist

				
	def unProtectService(self, service):
		#print "unprotect"
		#print "config.ParentalControl.type.value:", config.ParentalControl.type.value
		if config.ParentalControl.type.value == "whitelist":
			if service not in self.whitelist:
				self.addWhitelistService(service)
		else: # blacklist
			if service in self.blacklist:
				self.deleteBlacklistService(service)
		#print "whitelist:", self.whitelist
		#print "blacklist:", self.blacklist

	def getProtectionLevel(self, service):
		if (config.ParentalControl.type.value == "whitelist" and service not in self.whitelist) or (config.ParentalControl.type.value == "blacklist" and service in self.blacklist):
			if self.serviceLevel.has_key(service):
				return self.serviceLevel[service]
			else:
				return 0
		else:
			return -1
	
	def getConfigValues(self):	
		self.checkPinInterval = False
		self.checkSessionPin = False

		self.sessionPinEntered = False
		self.currentPinStoreTime = 0
		self.pinIntervalSeconds = 0

		self.storeServicePin = config.ParentalControl.storeservicepin.value
		
		if self.storeServicePin == "never":
			pass
		elif self.storeServicePin == "standby":
			self.checkSessionPin = True
		else:
			self.checkPinInterval = True
			iMinutes = float(self.storeServicePin)
			iSeconds = iMinutes*60.0
			self.pinIntervalSeconds = iSeconds
		
		self.configInitialized = True
		config.misc.standbyCounter.addNotifier(self.resetSessionPin, initial_call = False)

	def resetSessionPin(self, configElement):
		self.sessionPinEntered = False

	def getCurrentSessionKey(self):
		iStartCounter = config.misc.startCounter.value
		iStandbyCounter = config.misc.standbyCounter.value		
		return( str(iStartCounter) + "." + str(iStandbyCounter) )

	def getCurrentTimeStamp(self):
		return time.time()

	def getPinList(self):
		return [ x.value for x in config.ParentalControl.servicepin ]
		
	def servicePinEntered(self, service, result):
#		levelNeeded = 0
		#if self.serviceLevel.has_key(service):
			#levelNeeded = self.serviceLevel[service]
#		
		#print "getPinList():", self.getPinList()
		#pinList = self.getPinList()[:levelNeeded + 1]
		#print "pinList:", pinList
#		
#		print "pin entered for service", service, "and pin was", pin
		#if pin is not None and int(pin) in pinList:
		if result is not None and result:
			#print "pin ok, playing service"
			#save last session and time of last entered pin...
			if self.checkSessionPin == True:
				self.sessionPinEntered = True
			if self.checkPinInterval == True:
				self.currentPinStoreTime = self.getCurrentTimeStamp()		
			self.callback(ref = service)
		else:
			if result is not None:
				Notifications.AddNotification(MessageBox,  _("The pin code you entered is wrong."), MessageBox.TYPE_ERROR)
			#print "wrong pin entered"
			
	def saveWhitelist(self):
		file = open(resolveFilename(SCOPE_CONFIG, "whitelist"), 'w')
		for x in self.whitelist:
			file.write(x + "\n")
		file.close
	
	def openWhitelist(self):
		self.whitelist = []
		try:
			file = open(resolveFilename(SCOPE_CONFIG, "whitelist"), 'r')
			lines = file.readlines()
			for x in lines:
				ref = ServiceReference(x.strip())
				self.whitelist.append(str(ref))
			file.close
		except:
			pass
		
	def saveBlacklist(self):
		file = open(resolveFilename(SCOPE_CONFIG, "blacklist"), 'w')
		for x in self.blacklist:
			file.write(x + "\n")
		file.close

	def openBlacklist(self):
		self.blacklist = []
		try:
			file = open(resolveFilename(SCOPE_CONFIG, "blacklist"), 'r')
			lines = file.readlines()
			for x in lines:
				ref = ServiceReference(x.strip())
				self.blacklist.append(str(ref))
			file.close
		except:
			pass
		
	def save(self):
		self.saveBlacklist()
		self.saveWhitelist()
		
	def open(self):
		self.openBlacklist()
		self.openWhitelist()

parentalControl = ParentalControl()