public async void SearchPhrase(string phrase)
{
PageLoader pageLoader = PageLoader.GetPageLoader();
List <Func <string, Task <ImageSearchResult> > > imageSearchResultsFunc = null;
for (int i = 0; i < 5; i++)
{
var page = await pageLoader.LoadPageAsync($@"https://www.google.com/search?q={phrase}&source=lnms&tbm=isch");
var imageUrlGenerator = GoogleImageDOMParser.GetUrls(page);
imageSearchResultsFunc = imageUrlGenerator.ToList();
if (imageSearchResultsFunc.Count > 0)
{
break;
}
}
if (imageSearchResultsFunc == null)
{
throw new InvalidDataException($"After {5} attempts no search results was found!");
}
var imageSearchResultTasks = imageSearchResultsFunc
.AsParallel()
.Select(o => o(CacheDirectory))
.ToList();
//imageSearchResultTasks.ForEach((imageResultTask) =>
await Task.Factory.StartNew(() =>
{
Parallel.ForEach(imageSearchResultTasks, (imageResultTask) =>
{
Stopwatch watch = new Stopwatch();
watch.Start();
//Debug.WriteLine($"Started downloading {imageResultTask.Name} from [{imageResultTask.ImageWebUrl}]");
try
{
imageResultTask.Start();
//imageResultTask.Start();
imageResultTask.Wait(10000);
//var filePath = Path.Combine(CacheDirector, $"{imageResultTask.Name}.{imageResultTask.FileExtension}");
//webClient.DownloadFile(imageResultTask.ImageWebUrl, filePath);
if (imageResultTask.IsCompleted && imageResultTask.Result != null)
{
lock (searchResultsLock)
{
var added = imageResultTask.Result;
SearchResults.Add(added);
//CollectionChanged.BeginInvoke(SearchResults, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, added), (o) => { }, SearchResults);
}
}
Debug.WriteLine($"Finished downloading {imageResultTask.Result.Name} in {watch.ElapsedMilliseconds}ms", "INFO");
}
catch
{
Debug.WriteLine("Exception occured");
}
watch.Stop();
});
});
Debug.WriteLine("All images were downloaded succesfully", "INFO");
}