"""Module that provides all database columns"""

from pymongo import MongoClient
from ujson import loads

with open("config.json", "r", encoding="utf-8") as f:
    db_config = loads(f.read())["database"]
    f.close()

if db_config["user"] is not None and db_config["password"] is not None:
    con_string = "mongodb://{0}:{1}@{2}:{3}/{4}".format(
        db_config["user"],
        db_config["password"],
        db_config["host"],
        db_config["port"],
        db_config["name"],
    )
else:
    con_string = "mongodb://{0}:{1}/{2}".format(
        db_config["host"], db_config["port"], db_config["name"]
    )

db_client = MongoClient(con_string)
db = db_client.get_database(name=db_config["name"])

collections = db.list_collection_names()

for collection in ["users"]:
    if collection not in collections:
        db.create_collection(collection)

col_users = db.get_collection("users")