import paho.mqtt.client as mqtt


# The callback for when the client receives a CONNACK response from the server.
def on_connect(client, userdata, flags, rc):
    print("Connected with result code {}".format(int(rc)))

    # Subscribing in on_connect() means that if we lose the connection and
    # reconnect then subscriptions will be renewed.
    client.subscribe("$SYS/#")

# The callback for when a PUBLISH message is received from the server.
def on_message(client, userdata, msg):
    print("[{}]: {}".format(msg.topic, str(msg.payload)))


print("System ready")
client = mqtt.Client()
# client.on_connect = on_connect
client.on_message = on_message

client.connect("192.168.0.154", 1883, 60)
print("connected")


client.subscribe('PI', qos=0)
name = input("Input username: ")

try:

    while True:
        client.loop_start()
        userinput = input("\nType: ")
        if userinput == "0":
            break
        else:
            client.publish('PI', "({}): {}".format(name, userinput))
finally:
    print("Gracefully ended")
    client.disconnect()