public async Task <WeatherForecastModel> GetForecast(string cityId, string zipCode)
{
_logger.LogDebug($"Getting forecasts for city ID = {cityId} and zipcode = {zipCode}");
//OpenWeatherMap: We recommend making calls to the API no more than one time every 10 minutes for one location
//let's cache the response for 10 minutes
WeatherForecastModel weatherForecast;
if (!_cache.TryGetValue(String.Format(WeatherCache, cityId, zipCode), out weatherForecast))
{
_logger.LogDebug($"Missing cache for city ID = {cityId} and zipcode = {zipCode}");
WeatherForecastModel sixDayForecast = await GetSixDayForecast(cityId, zipCode);
//sometimes (after 23.00) the openweathermap api returns five next days but not today
//in that case we fill the today's value from another endpoint
if (sixDayForecast?.Forecasts.Count() < 6)
{
AveragedDayForecastModel currentForecast = await GetCurrentForecast(cityId, zipCode);
sixDayForecast.Forecasts.Insert(0, currentForecast);
}
weatherForecast = sixDayForecast;
_cache.Set(string.Format(WeatherCache, cityId, zipCode), sixDayForecast, TimeSpan.FromMinutes(10));
}
return(weatherForecast);
}
private List <AveragedDayForecastModel> GetAveragedSixDayForecast(SixDayForecast fiveDayForecast)
{
var retval = new List <AveragedDayForecastModel>();
var daysOfForecast = fiveDayForecast.DailyForecastList.Select(x => DateTime.Parse(x.DateTimeText).Date).Distinct();
foreach (var day in daysOfForecast)
{
var dayForecasts = fiveDayForecast.DailyForecastList.Where(x => DateTime.Parse(x.DateTimeText).Date == day);
var averagedDayForecast = new AveragedDayForecastModel()
{
Date = day,
AveragedHumidity = dayForecasts.Average(x => x.WeatherConditions.Humidity),
AveragedTemperature = dayForecasts.Average(x => x.WeatherConditions.Temperature),
AveragedWind = dayForecasts.Average(x => x.WindStats.Speed)
};
retval.Add(averagedDayForecast);
}
return(retval);
}
