private async Task NavigateAndCheck(CancellationToken stop)
{
_navigationStart = DateTime.UtcNow;
var headers = new List <KeyValuePair <string, string> >()
{
new KeyValuePair <string, string>("User-Agent", "NHM/" + System.Windows.Forms.Application.ProductVersion),
new KeyValuePair <string, string>("Cache-Control", "no-store, no-cache, must-revalidate, max-age=0"),
};
WebViewBrowser.NavigationCompleted += Browser_NavigationCompleted;
WebViewBrowser.Navigate(new Uri(Links.LoginNHM), HttpMethod.Get, null, headers);
Func <bool> isActive = () => !stop.IsCancellationRequested;
while (isActive())
{
await TaskHelpers.TryDelay(TimeSpan.FromSeconds(1), stop);
var ok = await CheckForBtc();
if (!ok.HasValue)
{
continue;
}
LoginSuccess = ok;
Hide();
return;
}
}
private void Navigation_Forward_Button_Click(object sender, RoutedEventArgs e)
{
if (WebViewBrowser.CanGoForward)
{
WebViewBrowser.GoForward();
}
}
private void Navigation_Back_Button_Click(object sender, RoutedEventArgs e)
{
if (WebViewBrowser.CanGoBack)
{
WebViewBrowser.GoBack();
}
}
public void ForceCleanup()
{
WebViewBrowser.Dispose();
try
{
Process.GetProcessById((int)WebViewBrowser.Process.ProcessId)?.Kill();
}
catch
{ }
}
private void NavigateTo(string url)
{
var headers = new List <KeyValuePair <string, string> >()
{
new KeyValuePair <string, string>("User-Agent", _userAgent),
new KeyValuePair <string, string>("Cache-Control", "no-store, no-cache, must-revalidate, max-age=0"),
};
WebViewBrowser.Navigate(new Uri(url), HttpMethod.Get, null, headers);
}
private void LoginBrowser_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
{
var oldIsVisible = e.OldValue as bool?;
var wasVisible = oldIsVisible.HasValue && oldIsVisible.Value;
var wasInvisible = oldIsVisible.HasValue && !oldIsVisible.Value;
if (wasVisible)
{
CancelNavigateAndCheck();
LoadingPanel.Visibility = Visibility.Visible;
WebViewGrid.Visibility = Visibility.Collapsed;
WebViewBrowser.Navigate("about:blank");
}
else if (wasInvisible)
{
Logger.Info("LoginBrowser", $"LoginBrowser_IsVisibleChanged e.OldValue={e.OldValue}; e.NewValue={e.NewValue}");
_ = StartNavigateAndCheck();
}
else
{
Logger.Error("LoginBrowser", "Unexpected case");
}
}
private async Task <bool?> CheckForBtc()
{
var showRetry = (DateTime.UtcNow - _navigationStart).TotalSeconds > 5;
string htmlEvalValue = null;
try
{
htmlEvalValue = await WebViewBrowser.InvokeScriptAsync("eval", _jsEvalCode);
Logger.InfoDelayed("Login", $"JS eval returned htmlEvalValue='{htmlEvalValue}'", TimeSpan.FromSeconds(15));
var noNhmResponse = htmlEvalValue == null || htmlEvalValue == "NO_RESPONSE" || htmlEvalValue.Contains("INJ_ERROR");
if (showRetry)
{
LabelStatus.Content = Translations.Tr("Something went wrong");
TryAgainButton.Visibility = Visibility.Visible;
ReturnButton.Visibility = Visibility.Visible;
}
if (noNhmResponse)
{
return(null);
}
if (LoadingPanel.Visibility != Visibility.Collapsed)
{
LoadingPanel.Visibility = Visibility.Collapsed;
WebViewGrid.Visibility = Visibility.Visible;
}
var webResponse = JsonConvert.DeserializeObject <Response>(htmlEvalValue);
if (webResponse == null)
{
return(null);
}
if (webResponse.btcAddress != null)
{
var result = await ApplicationStateManager.SetBTCIfValidOrDifferent(webResponse.btcAddress);
if (result == ApplicationStateManager.SetResult.CHANGED)
{
Logger.Info("Login", $"Navigation and processing successfull.");
return(true);
}
else
{
Logger.Error("Login", $"Btc address: {webResponse.btcAddress} was not saved. Result: {result}.");
}
}
else if (webResponse.error != null)
{
var error = webResponse.error;
Logger.Error("Login", "Received error: " + error);
}
else
{
Logger.Info("Login", $"Navigation and processing successfull. BTC wasn't retreived.");
}
return(false);
}
catch (Exception e)
{
if (showRetry)
{
LabelStatus.Content = Translations.Tr("Something went wrong");
TryAgainButton.Visibility = Visibility.Visible;
ReturnButton.Visibility = Visibility.Visible;
}
Logger.ErrorDelayed("Login", $"CheckForBtc error: {e}. htmlEvalValue='{htmlEvalValue}'", TimeSpan.FromSeconds(15));
return(null);
}
}
private void Refresh_Page_Button_Click(object sender, RoutedEventArgs e)
{
WebViewBrowser.Refresh();
}
