public override IEnumerable <Forecast> GetForecast(City city)
{
var forecast = _repository.FindForecast(city.CityID);
if (forecast.Count() == 0)
{
forecast = _yrWebservice.GetForecast(city);
_repository.AddForecast(forecast);
_repository.Save();
}
else
{
foreach (Forecast item in forecast)
{
if (item.NextUpdate < DateTime.Now)
{
_repository.DeleteForecast(forecast);
_repository.Save();
forecast = _yrWebservice.GetForecast(city);
_repository.AddForecast(forecast);
_repository.Save();
break;
}
}
}
return(forecast);
}
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);
}
}
public override void RefreshForecast(Location location)
{
// If there are no weather data for location, or if it is time to update data.
if (!location.Forecasts.Any() || location.NextUpdate < DateTime.Now)
{
// ... delete old data (if there is any)
foreach (var forecast in location.Forecasts.ToList())
{
_repository.RemoveForecast(forecast.ForecastID);
}
// then get forecasts from web service and insert them.
foreach (var forecast in _webservice.GetLocationForecasts(location))
{
_repository.AddForecast(forecast);
}
// Cache data for 10 minutes according to yr api guidelines.
location.NextUpdate = DateTime.Now.AddMinutes(10);
_repository.Save();
}
}
public async Task <IActionResult> AddForecast(WeatherForecast newforecast)
{
await _repo.AddForecast(newforecast);
return(Ok());
}