#!/usr/bin/env python

# Set this variable to "threading", "eventlet" or "gevent" to test the
# different async modes, or leave it set to None for the application to choose
# the best option based on available packages.
async_mode = None

if async_mode is None:
    try:
        import eventlet
        async_mode = 'eventlet'
    except ImportError:
        pass

    if async_mode is None:
        try:
            from gevent import monkey
            async_mode = 'gevent'
        except ImportError:
            pass

    if async_mode is None:
        async_mode = 'threading'

    print('async_mode is ' + async_mode)

# monkey patching is necessary because this application uses a background
# thread
if async_mode == 'eventlet':
    import eventlet
    eventlet.monkey_patch()
elif async_mode == 'gevent':
    from gevent import monkey
    monkey.patch_all()

import json
import time
from threading import Thread
from flask import Flask, render_template
from flask_socketio import SocketIO

from numpy import exp, cos, linspace
import os, re

app = Flask(__name__, static_url_path='/static')
app.config['SECRET_KEY'] = 'secret!'
socketio = SocketIO(app, async_mode=async_mode)
thread = None


@socketio.on('dataPacket', namespace='/')
def handle_message(message):
    if app.debug:
        print('Obtained packet from station: ')
        print message
    # print message['data']
    socketio.emit('dataPacket',
        {'data': 'Server generated event', 'packet': message},
        namespace='/web')

@app.route('/')
def index():
    return render_template('index.html')

if __name__ == '__main__':
    socketio.run(app, host='0.0.0.0', port=5000, debug=False)