import websocket
import json
import logging
import time
import urllib3

from threading import Thread
from odoo.addons.hw_drivers import main
from odoo.addons.hw_drivers.tools import helpers

_logger = logging.getLogger(__name__)

def send_to_controller(print_id, device_identifier):
    server = helpers.get_odoo_server_url()
    try:
        urllib3.disable_warnings()
        http = urllib3.PoolManager(cert_reqs='CERT_NONE')
        http.request(
            'POST',
            server + "/iot/printer/status",
            body=json.dumps(
                {'params': {
                    'print_id': print_id,
                    'device_identifier': device_identifier,
                    }}).encode('utf8'),
            headers={
                'Content-type': 'application/json',
                'Accept': 'text/plain',
            },
        )
    except Exception as e:
        _logger.error('Could not reach configured server')
        _logger.error('A error encountered : %s ', e)


def on_message(ws, messages):
    """
        When a message is receive, this function is triggered
        The message is load and if its type is 'print', is sent to the printer
    """
    messages = json.loads(messages)
    for document in messages:
        if (document['message']['type'] == 'print'):
            payload = document['message']['payload']
            if helpers.get_mac_address() in payload['iotDevice']['iotIdentifiers']:
                #send box confirmation
                for device in payload['iotDevice']['identifiers']:
                    if device['identifier'] in main.iot_devices:
                        main.iot_devices[device["identifier"]]._action_default(payload)
                        send_to_controller(payload['print_id'], device['identifier'])


def on_error(ws, error):
    _logger.error(error)

class WebsocketClient(Thread):
    iot_channel = ""

    def on_open(self, ws):
        """
            When the client is setup, this function send a message to subscribe to the iot websocket channel
        """
        ws.send(
            '{"event_name":"subscribe","data":{"channels":["' + self.iot_channel + '"],"last":0}}'
        )

    def __init__(self, url):
        if url:
            self.url = url.replace("http", "ws")
            Thread.__init__(self)

    def start_client(self):
        self.ws = websocket.WebSocketApp(self.url + "/websocket",
                                         on_open=self.on_open, on_message=on_message,
                                         on_error=on_error)
        while 1:
            self.ws.run_forever()
            time.sleep(10)

    def run(self):
        self.start_client()