Enable all auth clients for secrets v3, remove serviceTokenData .populate in middleware, make secret versions and rollbacks compatible with blind indexing

backend/src/utils/auth.ts

@@ -2,9 +2,17 @@ import { AuthData } from '../interfaces/middleware';
 import {
     User,
     ServiceAccount,
-    ServiceTokenData
+    ServiceTokenData,
+    ServiceToken
 } from '../models';
 
+// TODO: find a more optimal folder structure to store these types of functions
+
+/**
+ * Returns an object containing the id of the authentication data payload
+ * @param {AuthData} authData - authentication data object
+ * @returns 
+ */
 const getAuthDataPayloadIdObj = (authData: AuthData) => {
     if (authData.authPayload instanceof User) {
         return { userId: authData.authPayload._id };
@@ -17,10 +25,30 @@ const getAuthDataPayloadIdObj = (authData: AuthData) => {
     if (authData.authPayload instanceof ServiceTokenData) {
         return { serviceTokenDataId: authData.authPayload._id };
     }
-
-    return {};
 };
 
+
+/**
+ * Returns an object containing the user associated with the authentication data payload
+ * @param {AuthData} authData - authentication data object
+ * @returns 
+ */
+const getAuthDataPayloadUserObj = (authData: AuthData) => {
+
+    if (authData.authPayload instanceof User) {
+        return { user: authData.authPayload._id };
+    }
+
+    if (authData.authPayload instanceof ServiceAccount) {
+        return { user: authData.authPayload.user };
+    }
+
+    if (authData.authPayload instanceof ServiceTokenData) {
+        return { user: authData.authPayload.user };
+    }
+}
+
 export {
-    getAuthDataPayloadIdObj
+    getAuthDataPayloadIdObj,
+    getAuthDataPayloadUserObj
 }