public static IObservable <PageQR> GetPagesQR(PageRequest request, int maxPages = 100)
{
PageQR startPage = new PageQR(request, null);
IObservable <PageQR> pages = Observable.Range(1, maxPages)
.Scan(startPage, (acc, num) => GetPageQR(acc, num))
.TakeWhile(page => page.Response.MaxModif != null);
return(pages);
}
private static PageQR GetPageQR(PageQR prevPage, int num)
{
PageRequest prevRequest = prevPage.Request;
DateTime? lastModif = prevPage.Response?.MaxModif ?? prevRequest.ModifAfter;
PageRequest request = prevRequest.CloneWith(lastModif);
PageResponse response = WebClient.GetPageResponse(request, num);
PageQR page = new PageQR(request, response);
return(page);
}
private static PageRequest WriteToFile(PageQR page)
{
//TODO
return(page.Request);
}