/// <summary>
/// when the login button is clicked, attempt to login
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void ButtonLogin_Clicked(object sender, EventArgs e)
{
this.LabelMessage.Text = "";
this.ButtonLogin.IsEnabled = false;
this.ButtonToCreateAccountPage.IsEnabled = false;
string username = this.EntryUsername.Text.Trim();
string password = this.EntryPassword.Text;
this.ActivityIndicator.IsVisible = true;
this.ActivityIndicator.IsRunning = true;
OperationReturnMessage response = await Task.Run(() => ServerOperations.LoginAccount(username, password));
if (response != OperationReturnMessage.FalseFailedConnection)
{
if (response == OperationReturnMessage.True)
{
await CredentialManager.SaveCredentialAsync(username, password, true);
this.OnLoggedIn();
}
else if (response == OperationReturnMessage.TrueConfirmEmail)
{
var confirmationPage = new EmailConfirmationPage(username, password);
confirmationPage.EmailConfirmed += this.OnEmailConfirmed;
await this.Navigation.PushModalAsync(confirmationPage);
await CredentialManager.SaveCredentialAsync(username, password, false);
this.OnLoggedIn();
}
else if (response == OperationReturnMessage.FalseInvalidCredentials)
{
this.LabelMessage.Text = "Login Failed - Username and/or Password are Incorrect.";
}
else
{
this.LabelMessage.Text = "Login Failed.";
}
}
else
{
this.LabelMessage.Text = "Connection failed: Please try again.";
}
this.ButtonToCreateAccountPage.IsEnabled = true;
this.ActivityIndicator.IsRunning = false;
this.ActivityIndicator.IsVisible = false;
this.EntryPassword.Text = "";
this.ButtonLogin.IsEnabled = true;
}
/// <summary>
/// Check if the current user credentials are valid with the server or not
/// in a background task.
/// </summary>
/// <returns>The OperationReturnMessage from the server.</returns>
public static async Task <OperationReturnMessage> CheckLoginStatusAsync()
{
string username = await SecureStorage.GetAsync("username");
Username = username;
if (CrossConnectivity.Current.IsConnected)
{
if ((username != null) && (username != ""))
{
OperationReturnMessage message = ServerOperations.LoginAccount(username, await SecureStorage.GetAsync("password"));
if (message != OperationReturnMessage.FalseFailedConnection)
{
if (message == OperationReturnMessage.True)
{
IsLoggedIn = true;
EmailConfirmed = true;
}
else if (message == OperationReturnMessage.TrueConfirmEmail)
{
IsLoggedIn = true;
EmailConfirmed = false;
}
else
{
IsLoggedIn = false;
EmailConfirmed = false;
Username = "******";
await SecureStorage.SetAsync("password", "");
}
return(message);
}
else
{
return(CannotConnectToServer(username));
}
}
else
{
Username = "******";
IsLoggedIn = false;
EmailConfirmed = false;
Username = "******";
return(OperationReturnMessage.False);
}
}
else // If the user is offline
{
return(CannotConnectToServer(username));
}
}
