add versioning support to the API

src-ui/src/app/interceptors/api-version.interceptor.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { ApiVersionInterceptor } from './api-version.interceptor';
+
+describe('ApiVersionInterceptor', () => {
+  beforeEach(() => TestBed.configureTestingModule({
+    providers: [
+      ApiVersionInterceptor
+      ]
+  }));
+
+  it('should be created', () => {
+    const interceptor: ApiVersionInterceptor = TestBed.inject(ApiVersionInterceptor);
+    expect(interceptor).toBeTruthy();
+  });
+});

src-ui/src/app/interceptors/api-version.interceptor.ts

@@ -0,0 +1,25 @@
+import { Injectable } from '@angular/core';
+import {
+  HttpRequest,
+  HttpHandler,
+  HttpEvent,
+  HttpInterceptor
+} from '@angular/common/http';
+import { Observable } from 'rxjs';
+import { environment } from 'src/environments/environment';
+
+@Injectable()
+export class ApiVersionInterceptor implements HttpInterceptor {
+
+  constructor() {}
+
+  intercept(request: HttpRequest<unknown>, next: HttpHandler): Observable<HttpEvent<unknown>> {
+    request = request.clone({
+        setHeaders: {
+          'Accept': `application/json; version=${environment.apiVersion}`
+        }
+      })
+ 
+    return next.handle(request);
+  }
+}