// -------- Functions --------
/// <summary>
/// Queries the weather service in the background and returns
/// what should be send over IRC.
/// </summary>
/// <param name="zip">Zip code.</param>
/// <returns>
/// The string that should go out over IRC.
/// Can be report or an error message.
/// </returns>
public async Task <string> QueryWeather(string zip)
{
string returnString = string.Empty;
try
{
if (reportCache.ContainsKey(zip))
{
// If our cache reports a null, its an invalid zip code. Print error message.
if (reportCache[zip] == null)
{
returnString = "Error with one or more zip codes: Error: Zip code \"" + zip + "\" is not a valid US zip code";
}
// Otherwise, if the value in our cache is old, get updated info.
else if ((DateTime.UtcNow - reportCache[zip].ConstructionTime).TotalSeconds >= this.weatherQuery.Cooldown)
{
// Get the weather report in the background.
WeatherReport report = await this.weatherQuery.QueryForWeather(zip);
returnString = report.ToString();
reportCache[zip] = report;
}
// Otherwise, our cache is still new, do not query NOAA, just return our cache.
else
{
returnString = reportCache[zip].ToString();
}
}
else
{
// Get the weather report in the background.
WeatherReport report = await this.weatherQuery.QueryForWeather(zip);
returnString = report.ToString();
reportCache[zip] = report;
}
}
catch (QueryException err)
{
// Only fill our cache if an invalid zip. Its possible we timed out
// or the service is just having a tough time at the moment. We don't
// want to fill the cache with a zip code that may be okay in the future,
// just not now.
if (err.ErrorCode == QueryErrors.InvalidZip)
{
reportCache[zip] = null; // Invalid zip, no sense wasting our time querying the SOAP service next time around.
}
returnString = err.Message;
}
catch (Exception err)
{
returnString = err.Message;
}
return(returnString);
}
// -------- Functions --------
/// <summary>
/// Queries NOAA in the backgroud.
/// </summary>
/// <param name="zip">The ZIP code to get weather information from.</param>
/// <returns>The weather report from NOAA.</returns>
public Task <WeatherReport> QueryForWeather(string zip)
{
return(Task.Run(
delegate()
{
// First, get the Lat/Long of the zip code.
Tuple <string, string> latLon;
using (WebClient client = new WebClient())
{
client.QueryString.Add("whichClient", "LatLonListZipCode");
client.QueryString.Add("listZipCodeList", zip);
client.QueryString.Add("Submit", "Submit");
// Per http://stackoverflow.com/questions/32641072/current-observation-feed-from-weather-gov-forbidden-403,
// Weather.gov now requires a user agent when querying their API.
client.Headers.Add("user-agent", userAgent);
string response = client.DownloadString("https://graphical.weather.gov/xml/SOAP_server/ndfdXMLclient.php");
latLon = XmlLoader.ParseLatitudeLongitude(response, zip);
}
// Next, get the weather report.
WeatherReport report = null;
using (WebClient client = new WebClient())
{
client.QueryString.Add("whichClient", "GmlLatLonList");
client.QueryString.Add("gmlListLatLon", Uri.EscapeDataString(latLon.Item1 + "," + latLon.Item2));
client.QueryString.Add("featureType", "Forecast_Gml2Point");
client.QueryString.Add("product", "glance");
client.QueryString.Add("Unit", "e");
client.QueryString.Add("maxt", "maxt"); // High Temp
client.QueryString.Add("mint", "mint"); // Low Temp
client.QueryString.Add("pop12", "pop12"); // Precipitation chance
client.QueryString.Add("wx", "wx"); // Current Conditations
client.QueryString.Add("appt", "appt"); // Apparent Temp
client.QueryString.Add("temp", "temp"); // Current Temp
client.QueryString.Add("Submit", "Submit");
client.Headers.Add("user-agent", userAgent);
string response = client.DownloadString("https://graphical.weather.gov/xml/SOAP_server/ndfdXMLclient.php");
report = XmlLoader.ParseWeatherReport(response, zip);
}
return report;
}
));
}
// -------- Functions --------
/// <summary>
/// Queries NOAA in the backgroud.
/// </summary>
/// <param name="zip">The ZIP code to get weather information from.</param>
/// <returns>The weather report from NOAA.</returns>
public Task <WeatherReport> QueryForWeather(string zip)
{
return(Task.Run(
delegate()
{
// First, get the Lat/Long of the zip code.
Tuple <string, string> latLon;
using (WebClient client = new WebClient())
{
client.QueryString.Add("whichClient", "LatLonListZipCode");
client.QueryString.Add("listZipCodeList", zip);
client.QueryString.Add("Submit", "Submit");
string response = client.DownloadString("http://graphical.weather.gov/xml/SOAP_server/ndfdXMLclient.php");
latLon = XmlLoader.ParseLatitudeLongitude(response, zip);
}
// Next, get the weather report.
WeatherReport report = null;
using (WebClient client = new WebClient())
{
client.QueryString.Add("whichClient", "GmlLatLonList");
client.QueryString.Add("gmlListLatLon", Uri.EscapeDataString(latLon.Item1 + "," + latLon.Item2));
client.QueryString.Add("featureType", "Forecast_Gml2Point");
client.QueryString.Add("product", "glance");
client.QueryString.Add("Unit", "e");
client.QueryString.Add("maxt", "maxt"); // High Temp
client.QueryString.Add("mint", "mint"); // Low Temp
client.QueryString.Add("pop12", "pop12"); // Precipitation chance
client.QueryString.Add("wx", "wx"); // Current Conditations
client.QueryString.Add("appt", "appt"); // Apparent Temp
client.QueryString.Add("temp", "temp"); // Current Temp
client.QueryString.Add("Submit", "Submit");
string response = client.DownloadString("http://graphical.weather.gov/xml/SOAP_server/ndfdXMLclient.php");
report = XmlLoader.ParseWeatherReport(response, zip);
}
return report;
}
));
}
/// <summary>
/// Parses the given XML from NOAA to a WeatherReport our plugin can use.
/// </summary>
/// <exception cref="ApplicationException">XML from NOAA is invalid.</exception>
/// <param name="noaaXml">The XML from NOAA's SOAP service.</param>
/// <param name="zipCode">The zip code we are getting the information from.</param>
/// <returns>A Weather Report object.</returns>
public static WeatherReport ParseWeatherReport(string noaaXml, string zipCode)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(noaaXml);
XmlNodeList forecastNodes = doc.GetElementsByTagName("app:Forecast_Gml2Point");
if (forecastNodes.Count == 0)
{
CheckForErrorResponse(noaaXml);
throw new QueryException(
QueryErrors.MissingForecast,
"Got invalid XML from NOAA. Could not get weather report from zip code " + zipCode
);
}
WeatherReport report = new WeatherReport();
report.ZipCode = zipCode;
XmlNode forecastNode = forecastNodes[0];
foreach (XmlNode childNode in forecastNode.ChildNodes)
{
switch (childNode.Name)
{
// High Temperature:
case "app:maximumTemperature":
report.HighTemp = childNode.InnerText;
break;
// Low Temperature:
case "app:minimumTemperature":
report.LowTemp = childNode.InnerText;
break;
// Current Temperature:
case "app:temperature":
report.CurrentTemp = childNode.InnerText;
break;
// Apparent Temperature:
case "app:apparentTemperature":
report.ApparentTemp = childNode.InnerText;
break;
// Chance of Precipitation:
case "app:probOfPrecip12hourly":
report.ChanceOfPrecipitation = childNode.InnerText;
break;
// Current Conditions:
case "app:weatherPhrase":
report.CurrentConditions = childNode.InnerText;
break;
}
}
return(report);
}
