chore: refactor domain parsing to be more general (#3448)

* change the api of domain parsing to just parseDomain and getCookieDomain
* adds getBaseDomain as the method to get the domain after any official subdomains

server/utils/authentication.ts

@@ -2,10 +2,10 @@ import querystring from "querystring";
 import { addMonths } from "date-fns";
 import { Context } from "koa";
 import { pick } from "lodash";
+import { getCookieDomain } from "@shared/utils/domains";
 import env from "@server/env";
 import Logger from "@server/logging/Logger";
 import { User, Event, Team, Collection, View } from "@server/models";
-import { getCookieDomain } from "@server/utils/domains";
 
 export async function signIn(
   ctx: Context,

server/utils/domains.ts

@@ -1,15 +0,0 @@
-import { parseDomain, stripSubdomain } from "@shared/utils/domains";
-import env from "@server/env";
-
-export function getCookieDomain(domain: string) {
-  return env.SUBDOMAINS_ENABLED ? stripSubdomain(domain) : domain;
-}
-
-export function isCustomDomain(hostname: string) {
-  const parsed = parseDomain(hostname);
-  const main = parseDomain(env.URL);
-
-  return (
-    parsed && main && (main.domain !== parsed.domain || main.tld !== parsed.tld)
-  );
-}

server/utils/passport.ts

@@ -6,8 +6,8 @@ import {
   StateStoreStoreCallback,
   StateStoreVerifyCallback,
 } from "passport-oauth2";
+import { getCookieDomain } from "@shared/utils/domains";
 import { OAuthStateMismatchError } from "../errors";
-import { getCookieDomain } from "./domains";
 
 export class StateStore {
   key = "state";