public override IEnumerable <Forecast> RefreshForecast(string cityId, string lat, string lon)
{
IEnumerable <Forecast> forcasts;
try
{
// Try to find forcast if geonameid exists!
// READ in qrud. KRAV!
forcasts = _weatherRepository.FindForecastsByGeonameID(cityId);
//No hit in db. Exception is thrown and Get forcst from openweather api instead.
forcasts.First();
}
catch
{
//No existing forecasts in db for geonamId.
//Instead we request from OpenWeatherMap.
//We save this into db.
forcasts = new OpenWeatherMapWebservice().Get5DaysForecastByCityId(int.Parse(cityId), lat, lon);
foreach (var forcast in forcasts)
{
try
{
_weatherRepository.AddForecast(forcast);
_weatherRepository.Save();
}
catch (DbEntityValidationException)
{
//Ignore adding...
//Forecast data not valid.
_weatherRepository.RemoveForecast(forcast);
}
}
}
try
{
_weatherRepository.FindForecastsByGeonameID(cityId).First();
return(_weatherRepository.FindForecastsByGeonameID(cityId));
}
catch
{
//No hit!
//For user we presents response from openweathermap directly.
//But Forcasts is not saved into db!
return(forcasts);
}
}