# Import the microdot web server library
from microdot import Microdot, Response
from simpletemplate import render_template

# We also need network access so clients can connect to our web page...
import network

# The thermocouple sensor library
from machine import Pin
from max6675 import MAX6675

# And the MQTT library so we can control smartplugs
from umqttsimple import MQTTClient

# Make sure we're connected to the network
wlan = network.WLAN(network.STA_IF)
if not wlan.isconnected():
    # If we're not connected, try to connect to Tufts_Wireless:
    wlan.active(True)
    ssid = "Tufts_Wireless"
    print("Connecting to {}...".format(ssid))
    wlan.connect(ssid)
    while not wlan.isconnected():
        print('.', end='')
        sleep(1)

# Print out our IP address so we know where to point the web browser!
ip_address = wlan.ifconfig()[0]
print("Site will be accessible at http://{}".format(ip_address))

# Set up the thermocouple
therm = MAX6675(cs=Pin(12), sck=Pin(14), so=Pin(13))

# Set up our connection to the MQTT server
mqttclient = MQTTClient("esp32-UTLN", "en1-pi.eecs.tufts.edu")
mqttclient.connect()
SMARTPLUG_TOPIC = "ESPURNA-XXXXXX/relay/0/set"

# Set up the microdot server
app = Microdot()

# Main page
@app.route('/')
def index(request):
    return Response.send_file('popcorn.html')

# CSS style file
@app.route('/style.css')
def style(request):
    return Response.send_file('style.css')

# Monitoring page
@app.route('/monitor')
def monitor(request):
    # We can do wahtever we want here, like start the popcorn popper
    # However, we shouldn't sleep or do things that will take a long time,
    # because the user is waiting for us to return a web page
    mqttclient.publish(SMARTPLUG_TOPIC, '1')
    
    # We can use request.args to read the values sent from the HTML form, e.g.,
    n = request.args['quantity']

    # And then we can use that number (or anything else) as a template parameter
    # to customize what appears on the page.
    return Response(body=render_template('monitor.html', quantity=n),
                    headers={'Content-Type': 'text/html'})

# Data update which returns the current temperature
@app.route('/data')
def data(request):
    # Here we're just returning a Python dictionary, which gets automatically converted to JSON
    return {"temp":therm.read() * 9 / 5 + 32}

# Stop, which just turns off the popper and redirects back to the home page
@app.route('/stop')
def stop(request):
    mqttclient.publish(SMARTPLUG_TOPIC, '0')
    return Response.redirect('/')

# Start the server running
# port=80 will make it run on the default HTTP port like a normal web server
# debug=True will make it print out useful information to the REPL
app.run(port=80, debug=True)