internal static IAsyncOperationWithProgress <FileSearchResult, HttpProgress> SearchAsync(string keyword, Category category, StorageFile file, bool searchSimilar, bool onlyCovers, bool searchExpunged)
{
if (file is null)
{
throw new ArgumentNullException(nameof(file));
}
if (searchSimilar)
{
return(AsyncInfo.Run <FileSearchResult, HttpProgress>(async(token, progress) =>
{
var read = FileIO.ReadBufferAsync(file);
HttpStringContent contentOf(bool v) => new HttpStringContent(v ? "1" : "0");
var data = new HttpMultipartFormDataContent
{
{ contentOf(true), "fs_similar" },
{ contentOf(onlyCovers), "fs_covers" },
{ contentOf(searchExpunged), "fs_exp" }
};
var buf = await read;
data.Add(new HttpBufferContent(buf), "sfile", file.Name);
await data.BufferAllAsync();
var post = Client.Current.HttpClient.PostAsync(Client.Current.Uris.FileSearchUri, data);
post.Progress = (s, p) => progress.Report(p);
var r = await post;
var uri = r.RequestMessage.RequestUri;
var query = uri.Query.Split("?&".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
var hashstr = query.Single(s => s.StartsWith("f_shash=")).Substring(8).Split(';');
var info = hashstr.FirstOrDefault(value => value.Length != 40);
switch (info)
{
case "monotone":
throw new InvalidOperationException(LocalizedStrings.Resources.UnsupportedMonotone);
case "corrupt":
throw new InvalidOperationException(LocalizedStrings.Resources.UnsupportedFile);
case null:
break;
default:
throw new InvalidOperationException(info);
}
return new FileSearchResult(keyword, category, hashstr.Select(SHA1Value.Parse), file.Name, true, onlyCovers, searchExpunged);
}));
}
else
{
return(AsyncInfo.Run <FileSearchResult, HttpProgress>(async(token, progress) =>
{
var hash = await SHA1Value.ComputeAsync(file);
return new FileSearchResult(keyword, category, Enumerable.Repeat(hash, 1), file.Name, false, onlyCovers, searchExpunged);
}));
}
}