from flask import Flask, render_template
import paho.mqtt.publish as publish
import paho.mqtt.subscribe as subscribe

app = Flask(__name__)

MQTTSERVER = 'en1-pi.eecs.tufts.edu'
PLUG = 'ESPURNA-BF4AAA'

# Main page
@app.route('/')
def index():
    # Get the sensor value
    # This is blocking, so it relies on the MQTT 'retain' flag being set
    msg = subscribe.simple(PLUG + "/voltage", hostname=MQTTSERVER)
    print("%s %s" % (msg.topic, msg.payload))
    return render_template('main.html', sensorValue = msg.payload.decode())

@app.route('/on')
def turnOn():
    publish.single(PLUG + '/relay/0/set', '1', hostname=MQTTSERVER)
    return render_template('main.html')

@app.route('/off')
def turnOff():
    publish.single(PLUG + '/relay/0/set', '0', hostname=MQTTSERVER)
    return render_template('main.html')