private async void OnElementClicked(object sender, RoutedEventArgs e)
{
var b = sender as Button;
switch (b.Name)
{
case "SaveButton":
bool isComplete = await BOkCrawler.DownloadBookAsync(book);
ShowDownloadToastAsync(isComplete);
break;
case "ShareButton":
;
break;
default:
break;
}
}
public static async Task <bool> DownloadBookAsync(Book book)
{
if (book.detailPageLink == null)
{
MessageDialog m = new MessageDialog("Couldn't fetch the book info about its detail page!");
await m.ShowAsync();
return(false);
}
if (book.downloadLink == null)
{
book = await BOkCrawler.GetBookInfoFromDetailPage(book.detailPageLink);
}
try
{
HttpWebRequest req = WebRequest.Create(book.downloadLink) as HttpWebRequest;
//Headers definition
req.Headers.Add(HttpRequestHeader.Referer, book.detailPageLink.ToString());
req.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36";
req.Method = "GET";
req.Accept = "accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3";
HttpWebResponse response = req.GetResponse() as HttpWebResponse;
//When the response was ok
var m = new MessageDialog("You have reached the limit of 5 downloads in 24 hours.");
// Set the command that will be invoked by default
m.DefaultCommandIndex = 0;
// Set the command to be invoked when escape is pressed
m.CancelCommandIndex = 1;
// Show the message dialog
await m.ShowAsync();
}
//When the response was 410
catch (WebException e)
{
try
{
Uri d = new Uri(e.Response.Headers.Get("Location").Replace("http", "https"));
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(d);
//Headers definition
req.AllowAutoRedirect = true;
req.Method = "GET";
req.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36";
req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3";
req.Host = "dl123.zlibcdn.com";
WebResponse response = await req.GetResponseAsync();
string contentDisposition = response.Headers.Get("Content-Disposition");
string pattern = "filename=\"(.+?)\"$";
string fileName = Regex.Matches(contentDisposition, pattern).First().Groups[1].ToString();
StorageFile destinationFile;
if (BookView.DownloadPath == null)
{
destinationFile = await DownloadsFolder.CreateFileAsync(GetSafeFilename(fileName), CreationCollisionOption.GenerateUniqueName);
BookView.DownloadPathString = Path.GetDirectoryName(destinationFile.Path);
}
else
{
destinationFile = await BookView.DownloadPath.CreateFileAsync(GetSafeFilename(fileName), CreationCollisionOption.GenerateUniqueName);
}
Stream s = response.GetResponseStream();
await Task.Run(() => FileIO.WriteBytesAsync(destinationFile, ReadStream(s)));
return(true);
}
catch (WebException)
{
MessageDialog m = new MessageDialog("Couldn't download the file!");
await m.ShowAsync();
}
}
return(false);
}
