from threading import Event
from loguru import logger
from MqttBase import AbstractMqttPublisher
from queue import Empty


LOOP_SLICE = 0.1  # seconds

class MqttPublish(AbstractMqttPublisher):
    def __init__(self, config, queue):
        super().__init__(config)
        self.queue = queue
        self.topicPre = self.config["publishTopicPrefix"]

    def localLoop(self):
        while not self.killBill:
            try:
                dataObject = self.queue.get(timeout=LOOP_SLICE)
                if not dataObject.isValid():
                    logger.error("invalid dataObject received: drop it")
                else:
                    topic = self.topicPre + '/' + dataObject.getTopicPost()
                    payload = dataObject.getPayload()
                    self.client.publish(topic, payload)
                    logger.info("mqtt message sent: {} -> {}".format(topic, payload))
            except Empty:
                if self.killBill:
                    logger.error("killbill received")
                    break