private IHttpActionResult Parse(QueryParam query)
{
//make sure url query param is supplied
if (query == null || string.IsNullOrEmpty(query.Url))
{
return BadRequest("Url parameter is required");
}
//default to 10 words
int count = 10;
if (query.Count > 0)
{
count = query.Count;
}
var url = query.Url;
//append http in case url missing protocol
if (!url.StartsWith("http") && !url.StartsWith("https"))
{
url = "http://" + url;
}
//process and validate url
Uri uri = null;
bool validUrl = Uri.TryCreate(url, UriKind.Absolute, out uri) && (uri.Scheme == Uri.UriSchemeHttp || uri.Scheme == Uri.UriSchemeHttps);
if (!validUrl)
{
return BadUrl(url);
}
//initilize HtmlParser
var parser = new HtmlParser<Words, Word, Image>(uri);
try
{
parser.Parse();
return Ok(new Parser()
{
Images = parser.GetImages(),
Words = parser.GetWords(count)
});
}
catch (UriFormatException)
{
return BadUrl(url);
}
catch (UnsupportedContentTypeException ex)
{
return BadRequest(String.Format("HtmlParser does not support content type {0}", ex.ContentType));
}
catch (WebException ex)
{
//handle 404
if (ex.Status == WebExceptionStatus.ProtocolError && ex.Response != null && ((HttpWebResponse)ex.Response).StatusCode == HttpStatusCode.NotFound)
{
return NotFound(url);
}
return Unkonwn(url);
}
catch (Exception)
{
return Unkonwn(url);
}
}
public IHttpActionResult Post(QueryParam query)
{
return Parse(query);
}