import time
import board
import adafruit_dht
import psutil
import random

from paho.mqtt import client as mqtt_client

name = 'test'
broker = '192.168.0.196'
port = 1883
tempTopic = "home/office/climate/temp"
humidTopic = "home/office/climate/humid"
username = 'mqtt'
password = 'falrenforbreakfast'

client_id = f'python-mqtt-office-{random.randint(0, 1000)}'

# We first check if a libgpiod process is running. If yes, we kill it!
for proc in psutil.process_iter():
    if proc.name() == 'libgpiod_pulsein' or proc.name() == 'libgpiod_pulsei':
        proc.kill()

#D20 is the pin number, DHT11 is the sensor type
sensor = adafruit_dht.DHT11(board.D20)

while True:
    try:
        temp = sensor.temperature
        humidity = sensor.humidity
        
        #convert to Farenheit
        temp = (temp * 1.8) + 32
        print("Temperature: {}*F   Humidity: {}% ".format(temp, humidity))
    except RuntimeError as error:
        print(error.args[0])
        time.sleep(2.0)
        continue
    except Exception as error:
        sensor.exit()
        raise error

    #MQTT Portion
    def on_connect(client, userdata, flags, rc):
        if rc == 0:
            print("Connected to MQTT Broker!")
        else:
            print("Failed to connect, return code %d\n", rc)

    client = mqtt_client.Client(client_id)
    client.username_pw_set(username, password)
    client.on_connect = on_connect
    client.connect(broker, port)
    
    #Publish Temp Results
    #Convert to string so it can be sent to the broker.
    temp = str(temp)
    tempClean = f'{ "temperature": {temp} }'
    tempMsg = tempClean
    result = client.publish(tempTopic, tempMsg)
    # result: [0, 1]
    status = result[0]
    if status == 0:
        print(f"Send `{tempMsg}` to topic `{tempTopic}`")
    else:
        print(f"Failed to send message to topic {tempTopic}")

    #Publish Humid Results
    #Convert to string so it can be sent to the broker.
    humidity = str(humidity)
    humidClean = f'{ "humidity": {humidity} }'
    humidMsg = humidClean
    result = client.publish(humidTopic, humidMsg)
    # result: [0, 1]
    status = result[0]
    if status == 0:
        print(f"Send `{humidMsg}` to topic `{humidTopic}`")
    else:
        print(f"Failed to send message to topic {humidTopic}")

    client.loop_start()

    time.sleep(2.0)

#Now publish this via mqtt