public WeatherForecast(OWMForeCast owm)
{
if (owm.List == null)
{
throw new ArgumentException(owm.ToString());
}
this.CityName = owm.City?.Name;
this.Days = owm.List
.GroupBy(DateSelector)
.Select(grp => new WeatherForecastDay(grp.Key, grp.ToArray()))
.ToArray();
}
public async Task <WeatherForecast> GetForecastAsync()
{
try
{
OWMForeCast fc = await this.GetOpenWeatherMapForecastAsync();
var result = new WeatherForecast(fc);
this._cachedResult = result;
return(result);
}
catch (Exception e)
{
this._logger.LogError(e, "Failed to query OpenWeatherMap forecast");
return(this._cachedResult); // might be null or outdated but our best guess.
}
}