import dataclasses

import flask
import flask_login

import mgU
import database


user = flask.Blueprint(
    name='user_api',
    import_name=__name__,
    url_prefix='/user/'
)


@user.route('/get_forums')
@flask_login.login_required
def get_user_forums() -> tuple[flask.Response, int]:
    user_id: str = flask_login.current_user.get_id()

    forums: list[mgU.Forum] = database.get_user_forums(int(user_id))
    forums_dict = {"forums" : [dataclasses.asdict(forum) for forum in forums]}

    return flask.jsonify(forums_dict), 200


@user.route('/create', methods=['POST'])
def create_user() -> tuple[flask.Response, int]:
    """
    Create a new user account.
    Expects JSON with 'username' and 'password' fields.
    """
    data = flask.request.get_json()

    if not data:
        return flask.jsonify({"error": "No JSON data provided"}), 400

    username = data.get('username')
    password = data.get('password')

    if not username or not password:
        return flask.jsonify({"error": "Username and password are required"}), 400

    # Validate username length and characters
    if len(username.strip()) == 0:
        return flask.jsonify({"error": "Username cannot be empty"}), 400

    if len(password) < 6:
        return flask.jsonify({"error": "Password must be at least 6 characters long"}), 400

    # Attempt to create the user
    new_user = database.create_user(username.strip(), password)

    if new_user is None:
        return flask.jsonify({"error": "Username already exists or creation failed"}), 409

    # Return the created user (without sensitive data)
    user_dict = {
        "id": new_user.id,
        "name": new_user.name,
        "message": "User created successfully"
    }

    return flask.jsonify(user_dict), 201