from msg_montainer import MsgContainer
from msg_sink import MsgSink
from typing import Callable
import re

class NmeaReceiver(MsgSink):
	def __init__(self):
		MsgSink.__init__(self)
		self.filters = []

	def on_recv(self, msg: MsgContainer):
		data = msg.data.decode(encoding="utf-8")
		for filter in self.filters:
			if re.match(filter['re'], data):
				if filter['listener'] is not None:
					filter['listener'](msg)

	def register_msg(self, msg_type: str, listener: Callable):
		self.filters.append({'re': msg_type, 'listener': listener})


	def _filter_by_msg_type(self, msg_type: str):
		self.filters.append(msg_type)