class Transmission:

	def __init__(self, trame):
		self._id = None
		self._temperature = None
		self._humidite = None
		self._trame = trame
		
		if len(trame) == 40 and all(c in "01" for c in trame):
			self.decoder()
		
	def __repr__(self):
		return f"ID : {self._id} / Temp. : {self._temperature}°C / Hum. : {self._humidite}%"
		
	def decoder(self):
		self.decoder_id()
		self.decoder_temperature()
		self.decoder_humidite()
		
	def decoder_id(self):
		self._id = int(self._trame[0:8], 2)
		
	def decoder_temperature(self):
		valeur = int(self._trame[16:28], 2)
		self._temperature = (valeur - 900) / 10
		
	def decoder_humidite(self):
		bloc = self._trame[28:36]
		if bloc == "10100000":
			self._humidite = 100
		else:
			dizaine = int(bloc[0:4], 2)
			unite = int(bloc[4:8], 2)
			self._humidite = 10 * dizaine + unite
		
	def get_id(self):
		return self._id
		
	def get_temperature(self):
		return self._temperature
		
	def get_humidite(self):
		return self._humidite
		
	def est_valide(self):
		if len(self._trame) != 40:
			return False
		blocs = [
			self._trame[0:8],
			self._trame[8:16],
			self._trame[16:28],
			self._trame[28:36]
		]
		controle = self._trame[36:40]
		for i in range(4):
			nb_uns = blocs[i].count("1")
			bit_attendu = str(nb_uns % 2)
			if controle[i] != bit_attendu:
				return False
		return True