public string GetSearchURL(ImageRequest request)
{
var searchTerm = string.Join(" ", request.SearchTerms);
var bingRequest = new BingRequest();
bingRequest.SearchTerm = searchTerm;
HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(bingRequest.Url);
httpRequest.MaximumAutomaticRedirections = 4;
httpRequest.MaximumResponseHeadersLength = 4;
httpRequest.Credentials = new NetworkCredential(ConfigurationManager.AppSettings["BingSearchAPIKey"], ConfigurationManager.AppSettings["BingSearchAPIKey"]);
HttpWebResponse response = (HttpWebResponse)httpRequest.GetResponse();
// Get the stream associated with the response.
Stream receiveStream = response.GetResponseStream();
string content;
using (StreamReader reader = new StreamReader(receiveStream, Encoding.UTF8))
{
content = reader.ReadToEnd();
}
string uriOfImage = null;
try
{
var images = bingRequest.Parse(content);
if (images.Count() > 0)
uriOfImage = images.ElementAt(request.Index).Url;
}
catch (IndexOutOfRangeException)
{
// No results were found so return a 404
uriOfImage = new Uri(HttpContext.Current.Request.Url, "404.jpeg").AbsoluteUri;
}
return uriOfImage;
}
private string StoreImageInBlob(ImageRequest imageRequest, MemoryStream downloadedFile)
{
downloadedFile.Seek(0, SeekOrigin.Begin);
return m_blobStorage.Save("image/" + imageRequest.Extension, downloadedFile).AbsoluteUri;
}
private void StoreBlobInfoInDB(ImageRequest imageRequest, string newBlobUri)
{
using (var db = new PictureContext())
{
db.Pictures.Add(new ImageStore
{
BlobURL = newBlobUri,
Extension = imageRequest.Extension,
SearchTermString = imageRequest.GetSearchTermsDisplay,
Index = imageRequest.Index
});
db.SaveChanges();
}
}
private void ReturnDownloadedImage(Stream downloadedFile, HttpContext context, ImageRequest request)
{
using (var image = Image.FromStream(downloadedFile))
using (var bmp = new Bitmap(image.Width, image.Height))
using (var gr = Graphics.FromImage(bmp))
{
gr.DrawImage(image, new Rectangle(0, 0, image.Width, image.Height));
context.Response.ContentType = "image/png";
bmp.Save(context.Response.OutputStream, ImageFormat.Png);
}
}
/// <summary>
/// Parses out context request to see what the user was looking for.
///
/// TODO: Add image resolution and other stuff as allowed params.
/// </summary>
/// <param name="context"></param>
/// <returns></returns>image
private ImageRequest GetImageRequest(HttpContext context)
{
var appPath = context.Request.ApplicationPath;
if (appPath.Length > 1)
appPath += "/";
var fileNameWithoutAppPath = context.Request.CurrentExecutionFilePath.TrimStart(appPath);
var fileNameWithoutExtension = fileNameWithoutAppPath.TrimEnd(context.Request.CurrentExecutionFilePathExtension);
fileNameWithoutExtension = fileNameWithoutExtension.Replace("/", "_"); // if someone types a / replace it with a _
fileNameWithoutExtension = fileNameWithoutExtension.Replace("\\", "_"); // if someone types a \ replace it with a _
var searchQueries = fileNameWithoutExtension.Split('_'); // <-- HAHA a '_' face! *cute*
int index = 0;
if (context.Request.QueryString.AllKeys.Count() > 0)
int.TryParse(context.Request.QueryString[null], out index);
ImageRequest image = new ImageRequest()
{
Extension = context.Request.CurrentExecutionFilePathExtension.TrimStart('.'), // remove leading period
SearchTerms = searchQueries,
Index = index % 50, // if it's larger than 49, then just take the remainder
};
return image;
}
private string CheckIfInBlob(ImageRequest imageRequest)
{
using (var db = new PictureContext())
{
ImageStore image = db.Pictures.Where(i =>
i.Extension == imageRequest.Extension
&& i.SearchTermString == imageRequest.GetSearchTermsDisplay
&& i.Index == imageRequest.Index
).FirstOrDefault();
if (image != null)
return image.BlobURL;
}
return null;
}
