public static ForecastState Reduce(ForecastState state, IAction action)
{
return(action switch
{
FetchWeatherForcastDataAction _ => state with {
Status = "Loading...", WeatherForecasts = Array.Empty <WeatherForecast>()
},
private void loadWeather()
{
string apiKey = Properties.Settings.Default.ApiKey;
if (string.IsNullOrEmpty(apiKey))
{
State = ForecastState.ApiKeyError;
}
else if (State == ForecastState.ApiKeyError)
{
State = ForecastState.Loading;
}
Thread weatherThread = new Thread(() =>
{
if (LocationState == LocationApiState.Ok && State != ForecastState.ApiKeyError)
{
using (WebClient webClient = new WebClient())
{
try
{
// set units
string units = "metric";
if (!RegionInfo.CurrentRegion.IsMetric)
{
units = "imperial";
}
// fetch weather
string url = string.Format(RequestUrl, latitude, longitude, units, apiKey);
parseWeather(webClient.DownloadString(url));
}
catch (Exception e)
{
ShellLogger.Debug("Error fetching weather: " + e.Message);
if (State == ForecastState.Loading)
{
State = ForecastState.FetchError;
OnWeatherChanged();
}
}
}
}
else
{
OnWeatherChanged();
}
});
weatherThread.Start();
}
private void parseWeather(string payload)
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(payload);
// parse xml
XmlNode tempNode = xmlDoc.SelectSingleNode("current/temperature");
XmlNode feelsLikeNode = xmlDoc.SelectSingleNode("current/feels_like");
XmlNode humidityNode = xmlDoc.SelectSingleNode("current/humidity");
XmlNode pressureNode = xmlDoc.SelectSingleNode("current/pressure");
XmlNode windSpeedNode = xmlDoc.SelectSingleNode("current/wind/speed");
XmlNode windDirectionNode = xmlDoc.SelectSingleNode("current/wind/direction");
XmlNode weatherNode = xmlDoc.SelectSingleNode("current/weather");
// temperature
double.TryParse(tempNode?.Attributes?["value"]?.Value, out Temperature);
// feels like
double.TryParse(feelsLikeNode?.Attributes?["value"]?.Value, out FeelsLike);
// humidity
double.TryParse(humidityNode?.Attributes?["value"]?.Value, out Humidity);
HumidityUnit = humidityNode?.Attributes?["unit"]?.Value;
// pressure
double.TryParse(pressureNode?.Attributes?["value"]?.Value, out Pressure);
PressureUnit = pressureNode?.Attributes?["unit"]?.Value;
// wind speed
double.TryParse(windSpeedNode?.Attributes?["value"]?.Value, out WindSpeed);
WindSpeedUnit = windSpeedNode?.Attributes?["unit"]?.Value;
// wind direction
WindDirection = windDirectionNode?.Attributes?["code"]?.Value;
// current conditions
CurrentConditions = weatherNode?.Attributes?["value"]?.Value;
if (!string.IsNullOrEmpty(CurrentConditions))
{
CurrentConditions = CultureInfo.CurrentCulture.TextInfo.ToTitleCase(CurrentConditions);
}
State = ForecastState.Ok;
OnWeatherChanged();
}
