import bcrypt

def create_user(db, login_info, user_info):

    """
    Creates a new user in the database
    
    Args:
        db (psycopg2.connection): connection to postgres database
        login_info (dict of str:int): username and password info
        user_info (dict of str:int): name and dob info

    Returns:
        bool, str: status, message
    """

    username, password = login_info["username"], login_info["password"]
    password_hash = bcrypt.hashpw(password.encode(), bcrypt.gensalt()).decode()
    name, dob = user_info["name"], user_info["dob"]
    with db:
        with db.cursor() as curs:
            curs.execute("SELECT * FROM Users WHERE username = %s", (username,))
            conflicts = curs.fetchall()
            if conflicts:
                return False, "Duplicate username"
            curs.execute("INSERT INTO Users (username, password_hash, name, dob) VALUES (%s, %s, %s, %s)", (username, password_hash, name, dob))
        db.commit()
    return True, "Success"

def get_user_details(db, user_id):

    """
    Gets the details of a user based on their id
    
    Args:
        db (psycopg2.connection): connection to postgres database
        id (int): user id
    
    Returns:
        bool, dict of str to str, dict of str to str: user existance, login info (username, password), user info (name, dob)
    """

    with db:
        with db.cursor() as curs:
            curs.execute("SELECT * FROM Users WHERE id = %s", (user_id,))
            user = curs.fetchall()
    if not user:
        return False, {}, {}
    user = user[0]
    return True, {"username": user[1], "password_hash": user[2]}, {"name": user[3], "dob": user[4]}

def create_event(db):
    pass

def finish_event(db, event):
    pass

def create_tournament(db, events):
    pass