fix: error in toArrayConfig

If an empty string or undefined is provided the method should not return [], but undefined instead. This way defaults defined in Joi function as expected.

Signed-off-by: Philip Molares <philip.molares@udo.edu>

src/config/auth.config.ts

@@ -66,7 +66,7 @@ export interface AuthConfig {
     searchAttributes: string[];
     usernameField: string;
     useridField: string;
-    tlsCa: string[];
+    tlsCa?: string[];
   }[];
   saml: {
     identifier: string;
@@ -78,8 +78,8 @@ export interface AuthConfig {
     identifierFormat: string;
     disableRequestedAuthnContext: string;
     groupAttribute: string;
-    requiredGroups: string[];
-    externalGroups: string;
+    requiredGroups?: string[];
+    externalGroups?: string[];
     attribute: {
       id: string;
       username: string;
@@ -241,18 +241,18 @@ const authSchema = Joi.object({
 
 export default registerAs('authConfig', () => {
   // ToDo: Validate these with Joi to prevent duplicate entries?
-  const gitlabNames = toArrayConfig(process.env.HD_AUTH_GITLABS, ',').map(
+  const gitlabNames = (
+    toArrayConfig(process.env.HD_AUTH_GITLABS, ',') ?? []
+  ).map((name) => name.toUpperCase());
+  const ldapNames = (toArrayConfig(process.env.HD_AUTH_LDAPS, ',') ?? []).map(
     (name) => name.toUpperCase(),
   );
-  const ldapNames = toArrayConfig(process.env.HD_AUTH_LDAPS, ',').map((name) =>
-    name.toUpperCase(),
-  );
-  const samlNames = toArrayConfig(process.env.HD_AUTH_SAMLS, ',').map((name) =>
-    name.toUpperCase(),
-  );
-  const oauth2Names = toArrayConfig(process.env.HD_AUTH_OAUTH2S, ',').map(
+  const samlNames = (toArrayConfig(process.env.HD_AUTH_SAMLS, ',') ?? []).map(
     (name) => name.toUpperCase(),
   );
+  const oauth2Names = (
+    toArrayConfig(process.env.HD_AUTH_OAUTH2S, ',') ?? []
+  ).map((name) => name.toUpperCase());
 
   const gitlabs = gitlabNames.map((gitlabName) => {
     return {

src/config/utils.spec.ts

@@ -14,7 +14,8 @@ import {
 describe('config utils', () => {
   describe('toArrayConfig', () => {
     it('empty', () => {
-      expect(toArrayConfig('')).toEqual([]);
+      expect(toArrayConfig('')).toEqual(undefined);
+      expect(toArrayConfig(undefined)).toEqual(undefined);
     });
     it('one element', () => {
       expect(toArrayConfig('one')).toEqual(['one']);

src/config/utils.ts

@@ -5,9 +5,12 @@
  */
 import { Loglevel } from './loglevel.enum';
 
-export function toArrayConfig(configValue?: string, separator = ','): string[] {
+export function toArrayConfig(
+  configValue?: string,
+  separator = ',',
+): string[] | undefined {
   if (!configValue) {
-    return [];
+    return undefined;
   }
   if (!configValue.includes(separator)) {
     return [configValue.trim()];

src/frontend-config/frontend-config.service.spec.ts

@@ -121,7 +121,7 @@ describe('FrontendConfigService', () => {
       disableRequestedAuthnContext: 'samlTestUrl',
       groupAttribute: 'samlTestUrl',
       requiredGroups: ['samlTestUrl'],
-      externalGroups: 'samlTestUrl',
+      externalGroups: ['samlTestUrl'],
       attribute: {
         id: 'samlTestUrl',
         username: 'samlTestUrl',