import paho.mqtt.client as mqtt
import ssl
from threading import Thread
from daemonize import Daemonize
import redis
import time
import signal
import sys
import os
import logging



def sigint_handler(signal, frame):
    #logging.warning('Interrupted')
    sys.exit(0)
    os._exit(0)


def on_connect(client, userdata, flags, rc):
    #logging.info("Connected with result code "+str(rc))
    client.subscribe("$SYS/#")



def on_publish(client, userdata, mid):
    pass


def getRedis(i, client, logger):
    logger.info("Listening in redis events")
    r = redis.StrictRedis(host='localhost', port=6379, db=0)
    while 1:
        time.sleep(0)
        data = r.brpop("events", 10)
        if data:
            info = data[1].split('|')
            logger.info("Channel: " + info[0] + " message: " + info[1])
            client.publish(info[0], info[1])



def sigint_handler(signal, frame):
    sys.exit(0)

def get_logger():
    logger = logging.getLogger("mqtt_logger")
    logger.setLevel(logging.INFO)

    fh = logging.FileHandler("/tmp/mqtt_sender.log")
    fmt = '%(asctime)s - %(threadName)s - %(levelname)s - %(message)s'
    formatter = logging.Formatter(fmt)
    fh.setFormatter(formatter)
 
    logger.addHandler(fh)
    return logger

def main():
    logger = get_logger()
    logger.info("Starting mqtt_sender")
    logger.info("Connecting to MQTT server")

    client = mqtt.Client()
    client.on_connect = on_connect
    client.on_publish = on_publish

    client.tls_set(
        "/etc/letsencrypt/live/resqaws.jankstudio.com/fullchain.pem", cert_reqs=ssl.CERT_NONE,
        tls_version=ssl.PROTOCOL_TLSv1)

    client.connect("resqaws.jankstudio.com", 8883, 60)

    logger.info("Starting redis thread")
    t = Thread(target=getRedis, args=(1, client, logger))

    t.start()

    signal.signal(signal.SIGINT, sigint_handler)
    client.loop_forever()


#logging.basicConfig(filename='/tmp/mqtt_sender.log', level=logging.INFO)
#logging.info('Started mqtt_sender')

#pid = "/tmp/mqtt_sender.pid"
#daemon = Daemonize(app="mqtt_sender", pid=pid, action=main)
#daemon.start()
main()