public async Task <TruncatedUrl> Update(TruncatedUrl url)
{
this.tuRepository.Update(url);
await this.SaveAsync();
return(url);
}
public Task <TruncatedUrl> TruncateUrl(string baseUrl, string originalUrl)
{
return(Task.Run(
() =>
{
TruncatedUrl truncatedUrl = this.Get(t => t.WithSameOriginal(originalUrl));
if (truncatedUrl != null)
{
return Task.FromResult(truncatedUrl);
}
else
{
//a quick randomize of url
string randomSeed = RandomizeExtensions.GenerateRandomString(shortUrlSize);
Uri shorUri = new Uri(new Uri(baseUrl), randomSeed);
truncatedUrl = new TruncatedUrl
{
CreationTime = DateTime.Now,
OriginalUrl = originalUrl,
Jumps = 0,
ShortUrl = shorUri.ToString()
};
return this.Add(truncatedUrl);
}
}));
}
public Task <TruncatedUrl> Jump(string shortUrl)
{
return(Task.Run(
() =>
{
TruncatedUrl truncatedUrl = this.Get(t => t.WithSameShortUrl(shortUrl));
if (truncatedUrl == null)
{
throw new Exception("Requested url is not found");
}
truncatedUrl.Jumps++;
return this.Update(truncatedUrl);
}));
}
public async Task <IHttpActionResult> Post([FromBody] string url)
{
if (string.IsNullOrEmpty(url))
{
throw new ArgumentException("URL cannot be empty");
}
Uri uriResult;
bool created = Uri.TryCreate(url, UriKind.Absolute, out uriResult);
if (!created)
{
throw new ArgumentException("Invalid URL format");
}
string baseUrl = $"{HttpContext.Current.Request.Url.Scheme}://{HttpContext.Current.Request.Url.Authority}";
TruncatedUrl resultUrl = await this.truncatedUrlServiceProvider.TruncatedUrlService.TruncateUrl(baseUrl, url);
return(this.Ok(resultUrl.ShortUrl));
}
public async Task <ActionResult> Redirect(string truncatedUrl)
{
TruncatedUrl url = await this.truncatedUrlServiceProvider.TruncatedUrlService.Jump(truncatedUrl);
return(this.RedirectPermanent(url.OriginalUrl));
}
