flask websocket

websocket.py

from flask import Flask
from flask_cors import CORS
from flask_socketio import SocketIO, emit
import os

app = Flask(__name__)
CORS(app)
socketio = SocketIO(app, cors_allowed_origins="*")

@socketio.on('connect', namespace="/items")
def socket_connect(auth):
    print('Client connected.')
    emit('initial_data', items)

@socketio.on('disconnect', namespace="/items")
def socket_disconnect():
    print('Client disconnected.')

@socketio.on('activate', namespace="/items")
def socket_shelve(id):
    print('Activate: ' + id)
    for i, item in enumerate(items):
        if item["id"] == int(id):
            items[i]["activated"] = "true"
            emit("activate", items[i])

@socketio.on('disable', namespace="/items")
def socket_shelve(id):
    print('Disable: ' + id)
    for i, item in enumerate(items):
        if item["id"] == int(id):
            items[i]["activated"] = "false"
            emit("disable", items[i])

if __name__ == '__main__':
    os.environ["FLASK_ENV"] = "production"
    socketio.run(app=app, host='0.0.0.0', port=5000, debug=True)