public IActionResult Create(ShortenedUrlEntry urlEntry)
{
_dbContext.UrlEntries.Add(urlEntry);
_dbContext.SaveChanges();
urlEntry.Key = _urlShorteningService.Encode(urlEntry.Id);
Uri uri = new Uri(urlEntry.Url);
Uri baseUri = new Uri(uri.GetLeftPart(UriPartial.Authority));
urlEntry.ShortUrl = new Uri(baseUri, urlEntry.Key).AbsoluteUri;
_dbContext.SaveChanges();
return(RedirectToAction(nameof(Index)));
}
public Task Invoke(HttpContext httpContext)
{
var dbContext = httpContext.RequestServices.GetService(typeof(UrlShortenerDbContext)) as UrlShortenerDbContext;
string currentUrl = httpContext.Request.GetDisplayUrl();
ShortenedUrlEntry urlToRedirect = dbContext.UrlEntries.FirstOrDefault(entry => entry.ShortUrl == currentUrl);
if (urlToRedirect != null)
{
httpContext.Response.Redirect(urlToRedirect.Url);
return(Task.CompletedTask);
}
return(_next.Invoke(httpContext));
}