#!/usr/bin/python
#Bosch Home Automation <> MQTT Gateway

import requests, json, time
import paho.mqtt.client as mqtt

class Mqtt2ThingBoard:
    
    #Mosquitto Settings
    client_name = "Mqtt2ThingBoardGateWay"
    host_name = "192.168.178.36"
    host_port = 1884

    mqtt_client = mqtt.Client(client_name)

    tb_gateway_user = "K9iW4T5E7tVeP4ZyapxB"
    tb_port = 1883
    tb_client = mqtt.Client(tb_gateway_user)
    tb_client.username_pw_set(tb_gateway_user,None)

    #Sent MQTT Debugging Message
    def publishDebugMsg(self,msg):
        self.mqtt_client.publish("Mqtt2ThingBoardGateWay/debug",msg,0,True)
        print(msg)

    #Sent message to MQTT ThingsBoard Gateway
    def publishTelemetryMsg(self,msg):
        if self.tb_client.is_connected == False:
            self.tb_client.connect(self.host_name,self.tb_port)
        self.tb_client.publish("v1/gateway/telemetry",msg,0,True)


    def handleMobileAlertsStatus(self,topics,msg):
        device = topics[1]+"_"+topics[2]
        msg = {
             device: [
                  {
                       topics[3]: msg
                  }
             ]
        }
        print(f"{device}: {json.dumps(msg)}")
        self.publishTelemetryMsg(json.dumps(msg))

    #react to MQTT incoming message
    def onMqttMessage(self, client, userdata, message):    
        msg = str(message.payload.decode("utf-8"))
        topics = message.topic.split("/")
        #print(f"{message.topic}:  {msg}")
        if (topics[0]=="stat" and topics[2]=="MA"):
            self.handleMobileAlertsStatus(topics,msg)


    #subscribe to message to trigger scenarios                
    def subscribeToMqttInputs(self):
        self.mqtt_client.subscribe('#')
        self.mqtt_client.on_message = self.onMqttMessage

            
    #set up the system: login to MQTT + get all needed data from the BSH
    def __init__(self):                
        self.publishDebugMsg("Connecting to MQTT Server")
        self.mqtt_client.connect(self.host_name,self.host_port)

        self.publishDebugMsg("Setting up the Environment...")        
        
        self.publishDebugMsg("Subscribe to MQTT Messages")
        self.subscribeToMqttInputs()
        

    def loop(self):
        #Restart Long Polling every second
        while True:
            self.mqtt_client.loop_start()                                
            time.sleep(1)
            self.mqtt_client.loop_stop()
        


Mqtt2ThingBoardGateWay = Mqtt2ThingBoard()
Mqtt2ThingBoardGateWay.loop()