import os.path
from tornado import gen, web, websocket, escape, options
from tornado.ioloop import IOLoop
from tornado.httpserver import HTTPServer
from tornado.options import parse_command_line

import psycopg2
import momoko
import json

settings = {
    'cookie_secret': '__TODO:_GENERATE_YOUR_OWN_RANDOM_VALUE_HERE__',
    'template_path': os.path.join(os.path.dirname(__file__), 'templates'),
    'static_path': os.path.join(os.path.dirname(__file__), 'static'),
    'login_url': '/login',
    'xsrf_cookies': True,
    'debug': True,
    'autoreload': True,
    'server_traceback': True,
}


class BaseHandler(web.RequestHandler):
    @property
    def db(self):
        return self.application.db


class ChatHandler(websocket.WebSocketHandler):
    @property
    def db(self):
        return self.application.db

    waiters = set()

    def open(self, *args, **kwargs):
        self.user_id = kwargs.get('user_id',1)
        self.waiters.add((self.user_id, self))

    # @gen.coroutine
    def on_message(self, message):
        parsed = escape.json_decode(message)
        if 'dummy' in parsed:
            return

        self.add_message(parsed)

    def on_close(self):
        self.waiters.remove((self.user_id, self))

# waiter.write_message({'msg': message, 'answer_type': 'add_contact'})
# waiter.write_message({'msg': message, 'answer_type': 'add_order'})

    @gen.coroutine
    def add_message(self, message_data):
        sender_id = message_data['data']['sender_id']
        recipent_id = message_data['data']['recipent_id']
        order_id = message_data['data'].get('order_id', None)
        team_id = message_data['data'].get('team_id', None)
        message = message_data['data'].get('chat_message', None)

        answer_type = message_data['format_type']
        private_type = 'true' if not order_id and not team_id else 'false'

        team_value = "NULL" if team_id is None else team_id
        order_value = "NULL" if order_id is None else order_id

        insert_sql = "INSERT INTO chat_message (id,text,created, sender_id,recipent_id, private_type,team_id, order_id) " \
                     "VALUES (DEFAULT,'{0}',NOW(),{1},{2},{3},{4},{5})".format(message,  sender_id, recipent_id, private_type, team_value,order_value)

        yield self.db.execute(insert_sql)
        waiters = tuple(w for c, w in self.waiters if c == recipent_id or c == sender_id)

        for waiter in waiters:
            waiter.write_message({'msg': message, 'answer_type': answer_type})

    def check_origin(self, origin):
        return True


class Application(web.Application):
    def __init__(self):
        handlers = [
            (r"/chat/(?P<user_id>\d+)/", ChatHandler),
        ]
        super().__init__(handlers=handlers, **settings)


if __name__ == '__main__':
    parse_command_line()
    application = Application()
    ioloop = IOLoop.instance()

    application.db = momoko.Pool(
        dsn='dbname=archilance user=postgres password=postgres host=localhost',
        size=1,
        ioloop=ioloop,
    )
    future = application.db.connect()
    ioloop.add_future(future, lambda f: ioloop.stop())
    ioloop.start()
    future.result()

    http_server = HTTPServer(application)
    http_server.listen(8888, 'localhost')
    ioloop.start()