text: """MQTT Client for Python"""
  
  __version__ = '0.0.2'
  
  import asyncio
  import inspect
  import json
  import os
  import time
  import random
  import re
  import urllib
  
  import paho.mqtt.client as mqtt
  from wheezy.routing import PathRouter
  
  from .mqtt_messages import MqttMessages
  
  _underscorer1 = re.compile(r'(.)([A-Z][a-z]+)')
  _underscorer2 = re.compile('([a-z0-9])([A-Z])')
  def camelToSnake(s):
      # https://gist.github.com/jaytaylor/3660565
      subbed = _underscorer1.sub(r'\1_\2', s)
      return _underscorer2.sub(r'\1_\2', subbed).lower()
  
  class MqttClient(MqttMessages):
      """
         Example MqttClient for Application Frameworks (such as Microdrop)
         Used with the following broker:
         https://github.com/sci-bots/microdrop-3/blob/master/MoscaServer.js
      """
  
      def __init__(self, host="localhost", port=1883, base="microdrop"):
          super().__init__()
          self.router = PathRouter()
          self.host = host
          self.port = port
          self.base = base
          self.subscriptions = []
          self.client_id = self.ClientID()
          self.client = self.Client()
          self.connected = False
  
      @property
      def filepath(self):
          try:
              return os.path.dirname(inspect.getfile(self.__class__))
          except:
              return 'unknown'
  
      @property
      def name(self):
          safe_chars = '~@#$&()*!+=:;,.?/\''
          return urllib.parse.quote(camelToSnake(self.__class__.__name__), safe=safe_chars)
  
      @property
      def version(self):
          return '0.0'
  
      def send_message(self, topic, msg={}, retain=False, qos=0, dup=False):
          message = json.dumps(msg)
          self.client.publish(topic, message, retain=retain, qos=qos)
  
      def on_connect(self, client, userdata, flags, rc):
          self.connected = True
          self.listen()
          self.trigger('start', 'null')
  
      def on_disconnect(self, client, userdata, rc):
          self.connected = False
  
      def listen(self):
          print(f'No listen method implemented for {self.name}')
  
      def on_message(self, client, userdata, msg):
          method, args = self.router.match(msg.topic)
  
          try:
              payload = json.loads(msg.payload)
          except ValueError:
              print("Message contains invalid json")
              print(f'topic: {msg.topic}')
              payload = None
  
          if method:
              method(payload, args)
  
      def wrap_data(self, key, val):
          msg = {}
          if isinstance(val, dict) and val != None:
              msg = val
          else:
              msg[key] = val
          msg['__head__'] = self.DefaultHeader()
          return msg
  
      def Client(self, keepalive=60):
          client = mqtt.Client(self.client_id)
          client.on_connect = self.on_connect
          client.on_message = self.on_message
          client.on_disconnect = self.on_disconnect
          client.connect(host=self.host, port=self.port)
          client.loop_start()
          return client
  
      def ClientID(self):
          timestamp = str(time.time()).replace(".","")
          randnum = random.randint(1,1000)
          return f'{self.name}>>{self.filepath}>>{timestamp}.{randnum}'
  
      def DefaultHeader(self):
          header = {}
          header['plugin_name'] = self.name
          header['plugin_version'] = self.version
          return header
  