/// <summary>
/// Sets the current user of the app.
/// </summary>
/// <param name="response"></param>
internal void SetUser(UserResponse response)
{
if (response == null)
throw new ArgumentNullException(nameof(response));
if (string.IsNullOrEmpty(response.AccessToken))
throw new ArgumentException("Access token cannot be blank");
if (string.IsNullOrEmpty(response.RefreshToken))
throw new ArgumentException("Refresh token cannot be blank");
// Store user data
Platform.Current.Storage.SaveSetting(CREDENTIAL_USER_KEYNAME, response, ApplicationData.Current.RoamingSettings, SerializerTypes.Json);
Platform.Current.Storage.SaveCredential(CREDENTIAL_USER_KEYNAME, CREDENTIAL_ACCESSTOKEN_KEYNAME, response.AccessToken);
Platform.Current.Storage.SaveCredential(CREDENTIAL_USER_KEYNAME, CREDENTIAL_REFRESHTOKEN_KEYNAME, response.RefreshToken);
// Set properties
this.User = response;
this.AccessToken = response.AccessToken;
this.RefreshToken = response.RefreshToken;
// Notify any subscribers that authentication status has changed
this.NotifyUserAuthenticated();
}
/// <summary>
/// Signs the user out of the application and removes and credential data from storage / credential locker.
/// </summary>
/// <returns>Awaitable task is returned.</returns>
public Task SignoutAsync()
{
Platform.Current.Storage.SaveSetting(CREDENTIAL_USER_KEYNAME, null, ApplicationData.Current.RoamingSettings, SerializerTypes.Json);
Platform.Current.Storage.SaveCredential(CREDENTIAL_USER_KEYNAME, null, null);
this.User = null;
this.AccessToken = null;
this.RefreshToken = null;
this.NotifyUserAuthenticated();
return Task.CompletedTask;
}
/// <summary>
/// Initialization logic which is called on launch of this application.
/// </summary>
protected internal override void Initialize()
{
// Retrieve the access token from the credential locker
string access_token_value = null;
if (Platform.Current.Storage.LoadCredential(CREDENTIAL_USER_KEYNAME, CREDENTIAL_ACCESSTOKEN_KEYNAME, ref access_token_value))
this.AccessToken = access_token_value;
// Retrieve the refresh token from the credential locker
string refresh_token_value = null;
if (Platform.Current.Storage.LoadCredential(CREDENTIAL_USER_KEYNAME, CREDENTIAL_REFRESHTOKEN_KEYNAME, ref refresh_token_value))
this.RefreshToken = refresh_token_value;
// Retrieve the user profile data from settings
this.User = Platform.Current.Storage.LoadSetting<UserResponse>(CREDENTIAL_USER_KEYNAME, ApplicationData.Current.RoamingSettings, SerializerTypes.Json);
if (this.User != null)
{
this.User.AccessToken = this.AccessToken;
this.User.RefreshToken = this.RefreshToken;
}
// Notify any subscribers that authentication status has changed
this.NotifyUserAuthenticated();
base.Initialize();
}
