/// <summary>
/// Maps the user's preferences onto the specified view model as an asynchronous operation.
/// </summary>
/// <param name="model">The view model to map.</param>
/// <param name="cancellationToken">The cancellation token to use.</param>
/// <returns>
/// A <see cref="Task"/> representing the asynchronous operation to map the view model.
/// </returns>
private async Task MapPreferencesAsync(LinePreferencesViewModel model, CancellationToken cancellationToken)
{
var user = await _userManager.GetUserAsync(User);
if (user == null)
{
_logger?.LogError($"Failed to get user to render preferences.");
return;
}
model.ETag = user.ETag;
model.IsAuthenticated = true;
model.IsLinkedToAlexa = !string.IsNullOrWhiteSpace(user.AlexaToken);
ITflService service = _tflFactory.CreateService();
ICollection <LineInfo> lines = await service.GetLinesAsync(cancellationToken);
MapFavoriteLines(model, lines, user.FavoriteLines);
string updateResult = HttpContext.Request.Query["UpdateSuccess"].FirstOrDefault();
if (!string.IsNullOrEmpty(updateResult))
{
model.UpdateResult = string.Equals(updateResult, bool.TrueString, StringComparison.OrdinalIgnoreCase);
}
}
private async Task <bool> AreLinesValidAsync(UpdateLinePreferencesViewModel model, CancellationToken cancellationToken)
{
if (model.FavoriteLines != null)
{
ITflService service = _tflServiceFactory.CreateService();
ICollection <LineInfo> lines = await service.GetLinesAsync(cancellationToken);
IList <string> validLines = lines.Select((p) => p.Id).ToList();
return(model.FavoriteLines.All((p) => validLines.Contains(p)));
}
return(true);
}