/// <summary>
/// Refreshes the list of available tips.
/// </summary>
/// <returns>A <see cref="Task"/> representing the asynchronous operation. </returns>
private async Task RefreshTipsAsync()
{
try
{
// TODO: allow selecting the language and level classification
Tips tipsEndpoint = new Tips(App.OAuth2Account, SupportedLanguage.English, LanguageLevelClassification.B1);
this._tipsTask = Task.Run(async() => await tipsEndpoint.CallEndpointAsObjectAsync());
await this._tipsTask;
}
catch
{
}
this.OnPropertyChanged("IsNotCompleted");
if (this._tipsTask.IsFaulted)
{
this.OnPropertyChanged("IsFaulted");
this.OnPropertyChanged("ErrorMessage");
}
if (this._tipsTask.IsCanceled || this._tipsTask.IsFaulted)
{
this.ApplicationTips = new ReadOnlyObservableCollection <Tip>(new ObservableCollection <Tip>(new List <Tip>()));
}
else
{
this.ApplicationTips = new ReadOnlyObservableCollection <Tip>(new ObservableCollection <Tip>(this._tipsTask.Result));
this.OnPropertyChanged("IsSuccessfullyCompleted");
}
this.OnPropertyChanged("SingleRandomTip");
}
public static async Task <Tip> GetSingleTipAsync()
{
if (TipsDataModel.tipsCache.Count == 0)
{
// FIXME: allow choosing the correct language and language level
Tips tipsEndpoint = new Tips(App.OAuth2Account, SupportedLanguage.English, LanguageLevelClassification.B1);
TipsDataModel.tipsCache = await Task.Run(async() => await tipsEndpoint.CallEndpointAsObjectAsync());
}
int choosen = new Random().Next(TipsDataModel.tipsCache.Count - 1);
if (TipsDataModel.tipsCache.Count == 0)
{
Tools.Logger.Log("TipsController", "Empty list, something went wrong.");
return(new Tip()
{
Id = -1,
Text = "An error occurred. Please report this message to the dev team.",
});
}
else
{
return(TipsDataModel.tipsCache[choosen]);
}
}
