import os
from IPython.lib import passwd
from jinja2 import Environment, FileSystemLoader
from random import shuffle

username = input("Username: ")
port = input("Port: ")
servername = input("Servername: ")

templates_folder = "templates"
passwords_file = "passwords.txt"

template_env = Environment(loader=FileSystemLoader(templates_folder))
nbconfig = template_env.get_template("jupyter_notebook_config.py")

passwords = open(passwords_file).read().strip().splitlines()
passwords = [w.lower() for w in passwords]
shuffle(passwords)
password = "".join(passwords[:3])

userdata = {}
userdata['username'] = username
userdata['password'] = password
userdata['password_sha1'] = passwd(password)
userdata['port'] = port
userdata['servername'] = servername

with open("jupyter_notebook_config.temp.py", "w") as f:
    print(nbconfig.render(**userdata), file=f)
    os.system(f"sudo mv jupyter_notebook_config.temp.py /home/{username}/.jupyter/jupyter_notebook_config.py")
    os.system(f"sudo chown -R {username}:{username} /home/{username}/.jupyter")

os.system(f"sudo service jupyterlab@{username} restart")

print(f"New password: {password}")