# import json

# import redis

# import os
# from dotenv import load_dotenv

# load_dotenv()

# r = redis.Redis(
#   host=os.getenv('REDIS_HOST'),
#   port=os.getenv('REDIS_PORT'),
#   password=os.getenv('REDIS_PASSWORD'),
#   db=0
# )

# def handle_connect():
#     # increase number of connected users
#     r.set('n_connected_lc_users', max(1, int(r.get('n_connected_lc_users')) + 1))
#     print('There are now {} connected users.'.format(r.get('n_connected_lc_users')))

# def handle_disconnect():
#     # decrease number of connected users
#     r.set('n_connected_lc_users', max(0, int(r.get('n_connected_lc_users')) - 1))
#     print('There are now {} connected users.'.format(r.get('n_connected_lc_users')))

# def handle_alone_user():
#     if int(r.get('n_connected_lc_users')) == 1:
#         return True
#     else:
#         return False

# def save_user_messages(user_identifier, message):
#     # get user_messages from redis
#     user_messages = r.get(user_identifier)
#     if user_messages:
#         user_messages = json.loads(user_messages)
#     else:
#         user_messages = []
#     # append new message
#     user_messages.append(message)
#     # save user_messages to redis
#     r.set(user_identifier, json.dumps(user_messages))

# def get_user_messages(user_identifier):
#     # get user_messages from redis
#     user_messages = r.get(user_identifier)
#     if user_messages:
#         return json.loads(user_messages)
#     else:
#         return []

# def discard_user_messages(user_identifier):
#     r.delete(user_identifier)