I have 4 API calls first is to authenticate and than to upload a file and check file status. Once file status is return true than call API 4.
Issue is with the fileStatus, I need to check file status till it is returned true and than only move, however, it just checks once and move to the next switchMap.
Below is the code –

  this.homeService.auth().pipe(
  switchMap(authToken => {
    return this.homeService.uploadFile(this.masterFile);
  }),
  // Check file status
  switchMap(fileId => {
    return this.homeService.fileStatus(fileId).pipe(
      expand(status => {
        if (status === true || retries >= 50) {
          return of(status);
        } else {
          retries++;
          return of(status).pipe(delay(2000), switchMap(() => this.homeService.fileStatus(fileId)));
        }
      }),
      takeWhile(status => status === false && retries < 50, true),
      catchError(error => throwError('Failed to confirm upload status after 50 retries'))
    );
  }),
  switchMap((status: boolean) => {
    if (status === true) {
      return this.processFurther();
    }
  })
).subscribe(response => {
  console.lot('All done');
}, error => {
  console.log('Error processing ', error);
});