diff --git a/src/voucher/__init__.py b/src/voucher/__init__.py
new file mode 100644
index 0000000..e1054d5
--- /dev/null
+++ b/src/voucher/__init__.py
@@ -0,0 +1,5 @@
+import paho.mqtt.client as mqttc
+
+__version__ = "0.1.2"
+BUTTON_PIN_NUMBER = 3
+mqtt_client = mqttc.Client()
diff --git a/src/voucher/cli.py b/src/voucher/cli.py
new file mode 100644
index 0000000..bfc2e29
--- /dev/null
+++ b/src/voucher/cli.py
@@ -0,0 +1,241 @@
+import os
+import sys
+import time
+import signal
+import logging
+import RPi.GPIO as GPIO
+from argparse import ArgumentParser
+from distutils.util import strtobool
+from voucher import __version__ as version
+from voucher import mqtt, mqtt_client, unifi, BUTTON_PIN_NUMBER
+
+
+def signal_handler(sig, frame):
+    """Catch interuption signal and gracefully shut down"""
+    global mqtt_client
+    if mqtt_client:
+        logging.info("Shuttin down...")
+        mqtt_client.disconnect()
+        mqtt_client.loop_stop()
+    logging.info("... program exit")
+    sys.exit(0)
+
+
+def create_parser(args=sys.argv[1:]):
+    """Create a argparse.ArgumentParser
+    Creates a ArgumentParser based on command line
+    Parameters
+    ----------
+    args: list, optional
+        a list that represents how it was called from the command line
+        if not specified the list is build wid sys.argv[1:]
+    Returns
+    -------
+    argparse.ArgumentParser
+    """
+
+    parser = ArgumentParser()
+    parser.add_argument(
+        "--version", "-v", action="version", version=f"%(prog)s {version}"
+    )
+
+    parser.add_argument(
+        "--log-level",
+        "-l",
+        choices=["DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL"],
+        type=str.upper,
+        help="Log level for application",
+        default=os.getenv("LOG_LEVEL", "WARNING").upper(),
+    )
+
+    parser.add_argument(
+        "--mqtt-host",
+        help="mqtt host to connect to. Defaults to localhost.",
+        default=os.getenv("MQTT_HOST", "localhost"),
+    )
+
+    parser.add_argument(
+        "--mqtt-client-id",
+        help="id to use for this client. Defaults to wifi-voucher_ appended with the process id",
+        default=os.getenv("MQTT_CLIENT_ID", f"wifi-voucher_{os.getpid()}"),
+    )
+    parser.add_argument(
+        "--capath",
+        help="path to a directory containing trusted CA certificates to enable encrypted communication, defaults to /etc/ssl/certsc/ca-certificates.crt",
+        default=os.getenv("CAPATH", "/etc/ssl/certs/ca-certificates.crt"),
+    )
+    parser.add_argument(
+        "--mqtt-tls-version",
+        choices=["tlsv1.1", "tlsv1.2", "tlsv1.3"],
+        help="TLS protocol version, can be one of tlsv1.3 tlsv1.2 or tlsv1.1. Defaults to tlsv1.2 if available.",
+        default=os.getenv("MQTT_TLS_VERSION", "tlsv1.2"),
+    )
+    parser.add_argument(
+        "--mqtt-insecure",
+        help="do not check that the server certificate hostname matches the remote hostname.",
+        action="store_true",
+    )
+    parser.add_argument(
+        "--mqtt-user",
+        help="provide a username for mqtt broker connection",
+        default=os.getenv("MQTT_USER", None),
+    )
+    parser.add_argument(
+        "--mqtt-password",
+        help="provide a password for mqtt broker connection",
+        default=os.getenv("MQTT_PASSWORD", None),
+    )
+    parser.add_argument(
+        "--mqtt-topic",
+        help="mqtt topic to subscribe to. defautls to wifi-voucher",
+        default=os.getenv("MQTT_TOPIC", "wifi-voucher"),
+    )
+
+    parser.add_argument(
+        "--mqtt-protocol-version",
+        help="specify the version of the MQTT protocol to use when connecting. Defaults to mqttv311.",
+        choices=["mqttv31", "mqttv311", "mqttv5"],
+        default=os.getenv("MQTT_PROTOCOL_VERSION", "mqttv311"),
+    )
+    parser.add_argument(
+        "--mqtt-tls",
+        action="store_true",
+        help="Use TLS when connecting to mqtt broker",
+        default=bool(strtobool(os.getenv("MQTT_TLS", "False"))),
+    )
+    parser.add_argument(
+        "--mqtt-port",
+        type=int,
+        help="network port to connect to. Defaults to 1883 for plain MQTT and 8883 for MQTT over TLS",
+        default=os.getenv("MQTT_PORT", None),
+    )
+    parser.add_argument(
+        "--unifi-host",
+        help="host where Unifi Controller is located. Default is localhost",
+        default=os.getenv("UNIFI_HOST", "localhost"),
+    )
+    parser.add_argument(
+        "--unifi-port",
+        help="port that Unifi controller is listing on. Default 8443",
+        default=os.getenv("UNIFI_PORT", "8443"),
+        type=int,
+    )
+    parser.add_argument(
+        "--unifi-insecure",
+        help="don't validate tls certificates",
+        action="store_true",
+        default=bool(strtobool(os.getenv("UNIFI_INSECURE", "False"))),
+    )
+    parser.add_argument(
+        "--unifi-user",
+        help="User to login to Unifi controller",
+        default=os.getenv("UNIFI_USER", None),
+    )
+    parser.add_argument(
+        "--unifi-password",
+        help="Password for logging in to unifi controller",
+        default=os.getenv("UNIFI_PASSWORD", None),
+    )
+    parser.add_argument(
+        "--unifi-voucher-expire-unit",
+        choices=["minute", "hour", "day", "week", "year"],
+        help="Set the unit that --unifi-voucher-expire-number is using, default day",
+        default=os.getenv("UNIFI_VOUCHER_EXPIRE_UNIT", "day"),
+    )
+    parser.add_argument(
+        "--unifi-voucher-expire-number",
+        type=int,
+        help="Set the number on how long the voucher is valid, default 1",
+        default=os.getenv("UNIFI_VOUCHER_EXPIRE_NUMBER", "1"),
+    )
+    parser.add_argument(
+        "--unifi-voucher-number",
+        type=int,
+        help="Number of vouchers to create. Default 1",
+        default=os.getenv("UNIFI_VOUCHER_NUMBER", 1),
+    )
+    parser.add_argument(
+        "--unifi-voucher-quota",
+        type=int,
+        help="Number of times the voucher can be used. Default 1",
+        default=os.getenv("UNIFI_VOUCHER_QUOTA", 1),
+    )
+    parser.add_argument(
+        "--unifi-voucher-limit-up",
+        type=int,
+        help="Limit the bandwidth for uploads, in Kbps. Default unlimited",
+        default=os.getenv("UNIFI_VOUCHER_LIMIT_UP", None),
+    )
+
+    parser.add_argument(
+        "--unifi-voucher-limit-down",
+        type=int,
+        help="Limit the bandwidth for downloads, in Kbps. Default unlimited",
+        default=os.getenv("UNIFI_VOUCHER_LIMIT_DOWN", None),
+    )
+    parser.add_argument(
+        "--unifi-voucher-limit-byte",
+        type=int,
+        help="Limit the total MB transfer for the voucher, in MB. Default unlimited",
+        default=os.getenv("UNIFI_VOUCHER_LIMIT_BYTE", None),
+    )
+    parser.add_argument(
+        "--unifi-site",
+        help="Site in the Unifi controller to create vouchers for, default is 'default'",
+        default=os.getenv("UNIFI_SITE", "default"),
+    )
+    parser.add_argument(
+        "--printer", help="CUPS printer name", default=os.getenv("PRINTER", None)
+    )
+
+    return parser
+
+
+def main():
+    """The main program logic"""
+
+    global mqtt_client
+
+    signal.signal(signal.SIGINT, signal_handler)
+    signal.signal(signal.SIGTERM, signal_handler)
+
+    parser = create_parser()
+    args = parser.parse_args()
+
+    # set up the logging
+    logging.basicConfig(
+        level=args.log_level, format="%(asctime)s - %(levelname)s - %(message)s"
+    )
+    logging.info(f"starting version {version}")
+    logging.debug(args)
+
+    if bool(args.mqtt_user) != bool(args.mqtt_password):
+        logging.error(
+            "Both MQTT Username and Password needs to be set, or none of them"
+        )
+        sys.exit(1)
+
+    if args.unifi_user == None or args.unifi_password == None:
+        logging.error("Both Unifi user and Unifi password needs to be set")
+        sys.exit(1)
+
+    if args.printer == None:
+        logging.error("You need to specify a printer")
+        sys.exit(2)
+
+    mqtt_client = mqtt.create_client(args)
+
+    if mqtt_client:
+        mqtt_client.loop_start()
+
+    GPIO.setwarnings(False)
+    GPIO.setmode(GPIO.BCM)
+    GPIO.setup(BUTTON_PIN_NUMBER, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+    GPIO.add_event_detect(BUTTON_PIN_NUMBER, GPIO.FALLING, bouncetime=300)
+
+    while True:
+        if GPIO.event_detected(BUTTON_PIN_NUMBER):
+            logging.debug("Button was pressed")
+            for voucher in unifi.create_voucher(args):
+                unifi.print_voucher(args, voucher)
+        time.sleep(0.3)
diff --git a/src/voucher/gotify.py b/src/voucher/gotify.py
new file mode 100644
index 0000000..f7a68ef
--- /dev/null
+++ b/src/voucher/gotify.py
@@ -0,0 +1,34 @@
+import requests
+from logging import StreamHandler
+
+
+class Gotify:
+    def __init__(self, url, token):
+        self.url = url
+        self.token = token
+
+    def send(self, title, message, priority=5):
+        files = {
+            "title": (None, title),
+            "message": (None, message),
+            "priority": (None, priority),
+        }
+        response = requests.post(f"{self.url}/message?token={self.token}", files=files)
+
+
+class GotifyWebhookHandler(StreamHandler):
+    def __init__(self, url, token):
+        StreamHandler.__init__(self)
+        self.gotify = Gotify(url, token)
+
+    def emit(self, record):
+        msg = self.format(record)
+        self.gotify.send("wifi-voucher", msg)
+
+
+#        try:
+#
+#            response = requests.post(f"{self.url}/message?token={self.token}", files=files)
+#        except requests.exceptions.RequestException as err:
+#            print(f"Gotify logging: {err}")
+#
diff --git a/src/voucher/mqtt.py b/src/voucher/mqtt.py
new file mode 100644
index 0000000..2d57813
--- /dev/null
+++ b/src/voucher/mqtt.py
@@ -0,0 +1,99 @@
+import ssl
+import sys
+import json
+import logging
+from voucher import unifi
+from argparse import Namespace
+import paho.mqtt.client as mqtt
+
+
+def on_connect(client, userdata, flags, rc):
+    if rc == 0:
+        logging.info(f"Connected to MQTT with result code {rc}")
+        client.subscribe(client.args.mqtt_topic)
+    else:
+        logging.warning("Connection to MQTT failed, result code {rc}")
+        client.reconnect()
+
+
+def on_disconnect(client, userdata, rc):
+    if rc != 0:
+        logging.warning(
+            f"Unexpected disconnected from MQTT, result code {rc}. Reconnecting..."
+        )
+        client.reconnect()
+    else:
+        logging.info("Disconnected from MQTT successfully")
+
+
+def on_message(client, userdata, message):
+    logging.debug(
+        f"MQTT Message received ({message.topic}): {message.payload.decode('UTF-8')}"
+    )
+    args = vars(client.args)
+    try:
+        recived = json.loads(message.payload.decode("UTF-8"))
+    except json.decoder.JSONDecodeError as err:
+        logging.warning(f"Couldn't parse json response {err}")
+        return
+    try:
+        args.update(recived)
+    except ValueError as err:
+        logging.error(f"The message could be parsed as json, but was not a dict")
+        return
+
+    vouchers = unifi.create_voucher(Namespace(**args))
+    for voucher in vouchers:
+        unifi.print_voucher(Namespace(**args), voucher)
+
+
+def create_client(args):
+    if args.mqtt_tls_version == "tlsv1.1":
+        tls_version = ssl.PROTOCOL_TLSv1_1
+    elif args.mqtt_tls_version == "tlsv1.2":
+        tls_version = ssl.PROTOCOL_TLSv1_2
+    elif args.mqtt_tls_version == "tlsv1.3":
+        tls_version = ssl.PROTOCOL_TLSv1_3
+
+    if args.mqtt_port == None:
+        if args.mqtt_tls:
+            mqtt_port = 8883
+        else:
+            mqtt_port = 1883
+
+    client = mqtt.Client(args.mqtt_client_id)
+    client.args = args
+    client.enable_logger()
+    if args.mqtt_user:
+        client.username_pw_set(args.mqtt_user, password=args.mqtt_password)
+    client.on_connect = on_connect
+    client.on_message = on_message
+    client.on_disconnect = on_disconnect
+    if args.mqtt_tls:
+        if args.mqtt_insecure:
+            client.tls_set(
+                ca_certs=args.capath,
+                certfile=None,
+                keyfile=None,
+                cert_reqs=ssl.CERT_NONE,
+                tls_version=tls_version,
+                ciphers=None,
+            )
+        else:
+            client.tls_set(
+                ca_certs=args.capath,
+                certfile=None,
+                keyfile=None,
+                cert_reqs=ssl.CERT_REQUIRED,
+                tls_version=tls_version,
+                ciphers=None,
+            )
+
+    try:
+        client.connect(args.mqtt_host, port=int(mqtt_port))
+    except Exception as err:
+        logging.error(
+            f"Couln't connecto to broker on {args.mqtt_host}:{mqtt_port}: {err}"
+        )
+        return None
+    return client
diff --git a/src/voucher/unifi.py b/src/voucher/unifi.py
new file mode 100644
index 0000000..6bede87
--- /dev/null
+++ b/src/voucher/unifi.py
@@ -0,0 +1,137 @@
+import json
+import subprocess
+import requests
+import logging
+from voucher import __version__ as version
+
+headers = {
+    "Accept": "application/json, text/plain, */*",
+    "User-Agent": f"wifi-voucher/{version} https://git.rre.nu/jonas/wifi-voucher",
+}
+
+
+def print_voucher(args, voucher):
+    logging.debug(f"Printing voucher: {voucher[0:5]}-{voucher[5:]}")
+    validstr = (
+        f"Valid for {args.unifi_voucher_expire_number} {args.unifi_voucher_expire_unit}"
+    )
+    if args.unifi_voucher_expire_number != 1:
+        validstr = validstr + "s"
+    lpr = subprocess.Popen(
+        ["/usr/bin/lpr", "-P", args.printer],
+        stdin=subprocess.PIPE,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+    )
+    lpr.stdin.write(
+        f"GoHome Guest Wifi \n\n{voucher[0:5]}-{voucher[5:]}\n\n{validstr}\n".encode()
+    )
+    output, error = lpr.communicate()
+    if error:
+        logging.error(error.decode("utf-8").strip())
+
+
+def create_voucher(args):
+    """
+    Creates a wifi-voucher
+    """
+    logging.debug("Creating voucher")
+    session = requests.Session()
+    session.verify = not args.unifi_insecure
+
+    # Login
+    payload = {
+        "username": args.unifi_user,
+        "password": args.unifi_password,
+        "for_hotspot": True,
+        "remember": False,
+        "site_name": args.unifi_site,
+    }
+    try:
+        response = session.post(
+            f"https://{args.unifi_host}:{args.unifi_port}/api/login",
+            data=json.dumps(payload),
+            headers=headers,
+        )
+    except requests.exceptions.RequestException as err:
+        logging.error(err)
+        return []
+    if response.status_code != 200:
+        logging.error(
+            f"Got response code '{response.status_code}' from https://{args.unifi_host}:{args.unifi_port}"
+        )
+        return []
+    try:
+        if response.json()["meta"]["rc"] != "ok":
+            logging.error(f"Error in response from unifi API: {response.json()}")
+            return []
+    except KeyError:
+        logging.error("Got invalid json response from Unifi controller during login")
+        return []
+
+    # create voucher
+    payload = {}
+    payload["cmd"] = "create-voucher"
+    payload["note"] = f"wifi-voucher: {version}"
+    payload["quota"] = args.unifi_voucher_quota
+    payload["expire_unit"] = 1440
+    if args.unifi_voucher_expire_unit in ["minute", "hours"]:
+        payload["expire_number"] = 1
+        if args.unifi_voucher_expire_unit == "minute":
+            payload["expire"] = args.unifi_voucher_expire_number
+        else:
+            payload["expire"] = args.unifi_voucher_expire_number * 60
+    else:
+        payload["expire"] = "custom"
+        if args.unifi_voucher_expire_unit == "day":
+            payload["expire_number"] = args.unifi_voucher_expire_number
+        elif args.unifi_voucher_expire_unit == "week":
+            payload["expire_number"] = args.unifi_voucher_expire_number * 7
+        elif args.unifi_voucher_expire_unit == "year":
+            payload["expire_number"] = args.unifi_voucher_expire_number * 364
+
+    payload["n"] = args.unifi_voucher_number
+    if args.unifi_voucher_limit_byte:
+        payload["byte"] = args.unifi_voucher_limit_byte
+    if args.unifi_voucher_limit_up:
+        payload["up"] = args.unifi_voucher_limit_up
+    if args.unifi_voucher_limit_down:
+        payload["down"] = args.unifi_voucher_limit_down
+
+    try:
+        response = session.post(
+            f"https://{args.unifi_host}:{args.unifi_port}/api/s/{args.unifi_site}/cmd/hotspot",
+            data=json.dumps(payload),
+            headers=headers,
+        )
+    except requests.exceptions.RequestException as err:
+        logging.error(err)
+        return []
+    if response.status_code != 200:
+        logging.error(
+            f"Got response code '{response.status_code}' from https://{args.unifi_host}:{args.unifi_port}"
+        )
+        return []
+    try:
+        if response.json()["meta"]["rc"] != "ok":
+            logging.error(f"Error in response from unifi API: {response.json()}")
+            return []
+    except KeyError:
+        logging.error(
+            "Got invalid json response from Unifi controller during voucher creation"
+        )
+        return []
+    creation_time_list = response.json()["data"]
+
+    # Get created voucher.
+    response = session.get(
+        f"https://{args.unifi_host}:{args.unifi_port}/api/s/{args.unifi_site}/stat/voucher",
+        headers=headers,
+    )
+    voucher_codes = []
+    for voucher in response.json()["data"]:
+        for item in creation_time_list:
+            if voucher["create_time"] == item["create_time"]:
+                voucher_codes.append(voucher["code"])
+
+    return voucher_codes