from ..Thing import Thing
from ..Messages import LowLevelMessages

class TemperatureSensor(Thing):
    def __init__(self, network_id, thing_id):
        super().__init__(network_id, thing_id, type = Thing.Type.TemperatureSensor)
        self.temp = 0
        self._watchers = []
    
    def OnUpdate(self, handler):
        self._watchers.append(handler)
    def CancelOnUpdate(self, handler):
        self._watchers.remove(handler)

    def ProcessBinary(self, data):
        ix = 0
        self.temp = LowLevelMessages.ReceiveFloat16(data, [ix])
        for watcher in self._watchers:
            watcher(self.temp)