# -*- coding: utf-8 -*-
#!/usr/bin/env python

import os, sys
from os.path import abspath, join

PROJECT_ROOT = abspath(os.path.split(os.path.realpath(__file__))[0] + "/..")
sys.path.insert(0, PROJECT_ROOT)
sys.path.insert(0, join(PROJECT_ROOT, "apps"))

import threading
import uuid
import simplejson as json

from apps.web.constant import Const
from apps.web.core.mqtt_client import MqttClient


class MqttTest(threading.Thread):
    def __init__(self, host, port, user = None, password = None):
        super(MqttTest, self).__init__()

        self.host = str(host)
        self.port = int(port)
        self.user = user
        self.password = password

    def __repr__(self):
        return 'MqttTest<host = %s, port = %s, user = %s, password = %s>' % (
            self.host, self.port, self.user, self.password)

    def run(self):
        def on_message(mqttc, obj, msg):
            print msg.topic, msg.payload

            received = json.loads(msg.payload)

            if 'sid' not in received:
                print 'ERROR: no sid'
                return

            if 'cmd' not in received:
                print "ERROR: no cmd"

            if 'IMEI' not in received:
                print "ERROR: no imei"

            mqttc.publish(msg.topic.replace(Const.DEVICE_TOPIC_PREFIX, Const.SERVER_TOPIC_PREFIX),
                          json.dumps({'rst': 0, 'IMEI': received['IMEI'], 'cmd': received['cmd'], 'sid': received['sid']}),
                          qos = Const.MQTT_QOS)

        def on_subscribe(mqttc, obj, mid, granted_qos):
            print 'on_subscribe'

        def on_unsubscribe(client, userdata, mid):
            print 'on_unsubscribe'

        mqttc = MqttClient(client_id = 'webapp_' + str(uuid.uuid4()))

        try:
            print 'start mqtt test process'

            mqttc.on_message = on_message
            mqttc.on_subscribe = on_subscribe
            mqttc.on_unsubscribe = on_unsubscribe

            if self.user and self.password:
                mqttc.username_pw_set(self.user, self.password)

            mqttc.connect(self.host, self.port)
            mqttc.subscribe(Const.DEVICE_TOPIC_PREFIX + '/#', qos = Const.MQTT_QOS)
            mqttc.loop_forever()
        except Exception, e:
            print str(e)
        finally:
            mqttc.unsubscribe(Const.DEVICE_TOPIC_PREFIX + '/#')
            mqttc.disconnect()
            mqttc.close()


tester = MqttTest(host = '127.0.0.1', port = 1883)
tester.start()
tester.join()