AppConfig: Move default for rendererOrigin to config file

As we only use rendererOrigin in the frontend config service, where domain will be used if it is not defined, it makes more sense to move this default behavior to the app config directly. That makes it easier to understand what this variable contains and that it defaults to domain.

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

src/config/app.config.ts

@@ -20,7 +20,10 @@ export interface AppConfig {
 
 const schema = Joi.object({
   domain: Joi.string().label('HD_DOMAIN'),
-  rendererOrigin: Joi.string().optional().label('HD_RENDERER_ORIGIN'),
+  rendererOrigin: Joi.string()
+    .default(Joi.ref('domain'))
+    .optional()
+    .label('HD_RENDERER_ORIGIN'),
   port: Joi.number().default(3000).optional().label('PORT'),
   loglevel: Joi.string()
     .valid(...Object.values(Loglevel))

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

@@ -133,9 +133,7 @@ export class FrontendConfigService {
   private getIframeCommunication(): IframeCommunicationDto {
     return {
       editorOrigin: new URL(this.appConfig.domain),
-      rendererOrigin: this.appConfig.rendererOrigin
-        ? new URL(this.appConfig.rendererOrigin)
-        : new URL(this.appConfig.domain),
+      rendererOrigin: new URL(this.appConfig.rendererOrigin),
     };
   }