set-token.interceptor.ts

set-token.interceptor.ts

@Injectable({ providedIn: 'root' })
export class SetTokenInterceptor implements HttpInterceptor {
  constructor(private userService: UserService) {}

  intercept(
    req: HttpRequest<any>,
    next: HttpHandler
  ): Observable<HttpEvent<any>> {
    if (!this.userService.currentUser$.value) {
      return next.handle(req);
    }

    return this.userService.currentUser$.pipe(
      first(),
      switchMap(user => {
        return from(user?.getIdToken() || '');
      }),
      exhaustMap(token => {
        const tenantId = auth().tenantId;
        let headers = tenantId
          ? req.headers.append('Schoolid', tenantId)
          : req.headers;

        headers = headers.append('Authorization', token);
        const authReq = req.clone({ headers });
        return next.handle(authReq);
      })
    );
  }
}