public async Task UpdateCurrentWeatherAsync()
{
var newWeathers = await _apiClient.GetWeatherAsync();
var oldWeathers = _context.Weathers.ToList();
foreach (var newWeather in newWeathers)
{
var oldWeather = oldWeathers.SingleOrDefault(w => w.CityId == newWeather.CityId);
if (oldWeather != null)
{
oldWeather.Humidity = newWeather.Humidity;
oldWeather.Temperature = newWeather.Temperature;
oldWeather.Name = newWeather.Name;
}
else
{
_context.Weathers.Add(newWeather);
}
}
_context.SaveChanges(); // save changes has its own transaction
}
public async Task <WeatherRootObject> GetForecast(string id)
{
return(await _client.GetWeatherAsync(id));
}