79 lines
1.8 KiB
TypeScript
79 lines
1.8 KiB
TypeScript
// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import * as RemoteConfig from '../RemoteConfig';
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import { parseIntWithFallback } from './parseIntWithFallback';
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export function getMaxNickname(): number {
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return parseIntWithFallback(
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RemoteConfig.getValue('global.nicknames.max'),
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32
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);
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}
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export function getMinNickname(): number {
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return parseIntWithFallback(RemoteConfig.getValue('global.nicknames.min'), 3);
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}
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export function isValidNickname(nickname: string): boolean {
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if (!/^[a-z_][0-9a-z_]*$/.test(nickname)) {
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return false;
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}
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if (nickname.length < getMinNickname()) {
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return false;
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}
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if (nickname.length > getMaxNickname()) {
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return false;
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}
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return true;
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}
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export function isValidUsername(username: string): boolean {
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const match = username.match(/^([a-z_][0-9a-z_]*)(\.\d+)?$/);
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if (!match) {
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return false;
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}
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const [, nickname] = match;
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return isValidNickname(nickname);
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}
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export function getUsernameFromSearch(searchTerm: string): string | undefined {
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// Search term contains username if it:
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// - Is a valid username with or without a discriminator
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// - Starts with @
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// - Ends with @
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const match = searchTerm.match(
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/^(?:(?<valid>[a-z_][0-9a-z_]*(?:\.\d*)?)|@(?<start>.*?)@?|@?(?<end>.*?)?@)$/
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);
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if (!match) {
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return undefined;
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}
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const { groups } = match;
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if (!groups) {
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return undefined;
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}
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return (groups.valid || groups.start || groups.end) ?? undefined;
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}
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export function getNickname(username: string): string | undefined {
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const match = username.match(/^(.*?)(?:\.|$)/);
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if (!match) {
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return undefined;
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}
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return match[1];
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}
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export function getDiscriminator(username: string): string {
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const match = username.match(/(\..*)$/);
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if (!match) {
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return '';
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}
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return match[1];
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}
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