private async Task <string> RetrieveHtmlContent()
{
string content = String.Empty;
#if LOCAL_TEST
content = await Task.Run(() => File.ReadAllText(@"..\..\..\IHK.ResultsNotifier.Tests\html_content_sample\IHK_Results_Page.html"));
return(content);
#endif
try
{
content = await networkClient.GetExamResultsDocument();
}
catch (HttpRequestException ex)
{
RequestDataFallback("Lost connection or could not reach the server. Please check your connection.",
ex, "INFO", MessageBoxIcon.Exclamation);
}
catch (AuthenticationException ex)
{
// Probably User's session expired. Running another attemp to authenticate the user and retrieve results.
try {
await networkClient.AuthenticateUser(user);
if (networkClient.IsAuthenticated)
{
return(await networkClient.GetExamResultsDocument());
}
} catch { /*ignored*/ }
RequestDataFallback("User authentication lost. Please try to relog.", ex, "INFO",
MessageBoxIcon.Exclamation);
}
catch (Exception ex)
{
RequestDataFallback("Unknown error has occurred (4).", ex, "ERROR", MessageBoxIcon.Error);
}
return(content);
}
private async Task AuthenticateUserValidation(User user)
{
try
{
if (networkClient == null || networkClient.IsDisposed)
{
networkClient = new NetworkClient();
await networkClient.AuthenticateUser(user);
}
else
{
await networkClient.ValidateAuthentication();
}
}
catch (HttpRequestException ex)
{
AuthenticationFallback(ex);
}
catch (Exception ex)
{
AuthenticationFallback(ex);
}
}