/*
    Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
    Copyright (C) 2023 Spacebar and Spacebar Contributors
    
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published
    by the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.
    
    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

import { Config } from "./Config";
import { FieldErrors } from "./FieldError";
import { HTTPError } from "lambert-server";

export function ValidateName(name: string) {
	const check_username = name.replace(/\s/g, "");
	if (!check_username) {
		throw FieldErrors({
			username: {
				code: "BASE_TYPE_REQUIRED",
				message: "common:field.BASE_TYPE_REQUIRED",
			},
		});
	}
	const general = Config.get();
	const { maxUsername } = general.limits.user;
	if (check_username.length > maxUsername || check_username.length < 2) {
		throw FieldErrors({
			username: {
				code: "BASE_TYPE_BAD_LENGTH",
				message: `Must be between 2 and ${maxUsername} in length.`,
			},
		});
	}

	const { blockedContains, blockedEquals } = general.user;
	for (const word of blockedContains) {
		if (name.toLowerCase().includes(word)) {
			throw new HTTPError(`Username cannot contain "${word}"`, 400);
		}
	}

	for (const word of blockedEquals) {
		if (name.toLowerCase() === word) {
			throw new HTTPError(`Username cannot be "${word}"`, 400);
		}
	}
	return name;
}
