Add user aliases concept and weave LDAP into it

backend/src/services/user/user-dal.ts

@@ -20,12 +20,11 @@ export const userDALFactory = (db: TDbClient) => {
 
   // USER ENCRYPTION FUNCTIONS
   // -------------------------
-  const findUserEncKeyByUsername = async ({ username, orgId }: { username: string; orgId?: string }) => {
+  const findUserEncKeyByUsername = async ({ username }: { username: string }) => {
     try {
       return await db(TableName.Users)
         .where({
           username,
-          ...(orgId ? { orgId } : { orgId: null }),
           isGhost: false
         })
         .join(TableName.UserEncryptionKey, `${TableName.Users}.id`, `${TableName.UserEncryptionKey}.userId`)

backend/src/services/user/user-fns.ts

@@ -0,0 +1,21 @@
+import slugify from "@sindresorhus/slugify";
+
+import { alphaNumericNanoId } from "@app/lib/nanoid";
+import { TUserDALFactory } from "@app/services/user/user-dal";
+
+export const normalizeUsername = async (username: string, userDAL: Pick<TUserDALFactory, "findOne">) => {
+  let attempt = slugify(username);
+
+  let user = await userDAL.findOne({ username: attempt });
+  if (!user) return attempt;
+
+  while (true) {
+    attempt = slugify(`${username}-${alphaNumericNanoId(4)}`);
+    // eslint-disable-next-line no-await-in-loop
+    user = await userDAL.findOne({ username: attempt });
+
+    if (!user) {
+      return attempt;
+    }
+  }
+};