public ConfigurationForm(ScrobblerConfig existingConfig)
{
InitializeComponent();
BtnSave.Enabled = false;
ScrobblerConfig = existingConfig;
string alreadyLoggedUserText = "";
if (!string.IsNullOrWhiteSpace(existingConfig?.UserName))
{
alreadyLoggedUserText = $"Last authenticated user: {existingConfig.UserName}\n";
}
TxtStatus.Text = $"{alreadyLoggedUserText}Click the '{BtnReAuth.Text}' button\nto start a new authentication process...";
}
public ScrobblerConfig AskUserForNewAuthorizedSessionKey(IntPtr ownerWindowHandle)
{
using (var configurationForm = new ConfigurationForm(ScrobblerConfig))
{
if (configurationForm.ShowDialog(new Win32Window(ownerWindowHandle)) == DialogResult.OK)
{
// refresh with the new session key
ScrobblerConfig = configurationForm.ScrobblerConfig;
return(ScrobblerConfig);
}
else
{
return(null);
}
}
}
private async void BtnReAuth_Click(object sender, EventArgs e)
{
BtnReAuth.Enabled = false;
try
{
const string getTokenErrorMessage = "An error occured while trying to get an authentication token from Last.fm!";
const string getSessionKeyErrorMessage = "An error occured while trying to get an authenticated session key from Last.fm!";
void ShowFatalError(string message)
{
MessageBox.Show(message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
TxtStatus.Text = "Authentication aborted.";
}
// First we have to get a token to authorize...
ApiResponse <string> tokenResponse;
try
{
TxtStatus.Text = "Requesting a token from Last.fm...";
tokenResponse = await Auth.GetToken();
}
catch (Exception ex)
{
ShowFatalError($"{getTokenErrorMessage}\n\nDetails: {ex}");
return;
}
if (!tokenResponse.Success)
{
ShowFatalError($"{getTokenErrorMessage}\n\nDetails: {tokenResponse.Error.Code}: {tokenResponse.Error.Message}");
return;
}
// Then the user has to authorize the token in their browser,
// and then we can complete the process by getting a session key...
var url = Auth.GetAuthorizeTokenUrl(tokenResponse.Result);
Process.Start(url);
TxtStatus.Text = "Please click the 'Complete authentication' button\nonce you have authorized the plugin in your browser...";
// Enable the 'Complete authentication' button and wait until the user clicks it.
TaskCompletionSource <bool> waitForUserClick = new TaskCompletionSource <bool>();
void CompleteButtonClicked(object s, EventArgs e2) => waitForUserClick.TrySetResult(true);
BtnGetSessionKey.Click += CompleteButtonClicked;
BtnGetSessionKey.Enabled = true;
BtnGetSessionKey.Focus();
await waitForUserClick.Task;
BtnGetSessionKey.Enabled = false;
BtnGetSessionKey.Click -= CompleteButtonClicked;
ApiResponse <Session> sessionKeyResponse;
try
{
TxtStatus.Text = "Completing authentication...";
sessionKeyResponse = await Auth.GetSession(tokenResponse.Result);
}
catch (Exception ex)
{
ShowFatalError($"{getSessionKeyErrorMessage}\n\nDetails: {ex}");
return;
}
if (!sessionKeyResponse.Success)
{
ShowFatalError($"{getSessionKeyErrorMessage}\n\nDetails: {sessionKeyResponse.Error.Code}: {sessionKeyResponse.Error.Message}");
return;
}
// We have a new valid session key!
ScrobblerConfig = new ScrobblerConfig {
SessionKey = sessionKeyResponse.Result.Key, UserName = sessionKeyResponse.Result.UserName
};
BtnSave.Enabled = true;
TxtStatus.Text = $"{sessionKeyResponse.Result.UserName} is now successfully authenticated.";
}
finally
{
BtnReAuth.Enabled = true;
}
}
public void SetSessionKey(ScrobblerConfig scrobblerConfig)
{
ScrobblerConfig = scrobblerConfig ?? new ScrobblerConfig();
}
