/// <summary>
/// The class constructor.
/// </summary>
public WeatherData(Location loc, Time time, Temperature temp, string clouds)
{
this.Loc = loc;
this.Time = time;
this.Temperature = temp;
this.Clouds = clouds;
}
/// <summary>
/// Return comparing results
/// </summary>
public bool Equals(Location loc)
{
// If parameter is null return false:
if ((object)loc == null)
{
return false;
}
// Return true if the fields match:
return ((this.Country == loc.Country) && (this.City.Equals(loc.City, StringComparison.Ordinal)));
}
/// <summary>
/// Returns WeatherData object by location
/// </summary>
public WeatherData GetWeatherData(Location location)
{
string city = location.City;
string country = location.Country;
string url = "http://api.openweathermap.org/data/2.5/forecast?q=" + city + "," + country + "&mode=xml";
WeatherData wd = null;
try
{
wd = ParseWeatherDataXml(url);
}
catch(WeatherDataServiceException e)
{
Console.WriteLine(e.ToString());
}
return wd;
}
/// <summary>
/// Parsing of weather data service XML - returns WeatherData object with all weather details
/// </summary>
private WeatherData ParseWeatherDataXml(string url)
{
XDocument xdoc = null;
WeatherData wd = null;
try
{
//getting xml document from url
string xml = new WebClient().DownloadString(url);
xdoc = XDocument.Parse(xml);
var locNode = xdoc.Element("weatherdata").Element("location");
var timeNode = xdoc.Element("weatherdata").Element("forecast").Element("time");
//getting location values from xml
Location location = new Location(locNode.Element("name").Value, locNode.Element("country").Value);
//getting time values from xml
Time time = new Time(timeNode.Attribute("from").Value, timeNode.Attribute("to").Value);
//getting clouds description from xml
string clouds = timeNode.Element("clouds").Attribute("value").Value;
//getting temperature description from xml
Temperature temp = new Temperature(timeNode.Element("temperature").Attribute("unit").Value,
Convert.ToDouble(timeNode.Element("temperature").Attribute("value").Value),
Convert.ToDouble(timeNode.Element("temperature").Attribute("min").Value),
Convert.ToDouble(timeNode.Element("temperature").Attribute("max").Value));
//construct WeatherData object with all data
wd = new WeatherData(location, time, temp, clouds);
}
catch (System.Net.WebException e)
{
throw new WeatherDataServiceException("Problem with downloading xml", e);
}
catch (System.Xml.XmlException e)
{
throw new WeatherDataServiceException("Problem with parsing xml", e);
}
catch (System.NullReferenceException e)
{
throw new WeatherDataServiceException("Element/Attribute name is incorrect", e);
}
return wd;
}
private WeatherData GetWeatherDataForTest(string url)
{
string xml = new WebClient().DownloadString(url);
XDocument xdoc = XDocument.Parse(xml);
//getting values from xml
var path = xdoc.Element("weatherdata").Element("location");
Location location = new Location(path.Element("name").Value, path.Element("country").Value);
path = xdoc.Element("weatherdata").Element("forecast").Element("time");
Time time = new Time(path.Attribute("from").Value, path.Attribute("to").Value);
string clouds = path.Element("clouds").Attribute("value").Value;
Temperature temp = new Temperature(path.Element("temperature").Attribute("unit").Value,
Convert.ToDouble(path.Element("temperature").Attribute("value").Value),
Convert.ToDouble(path.Element("temperature").Attribute("min").Value),
Convert.ToDouble(path.Element("temperature").Attribute("max").Value));
return new WeatherData(location, time, temp, clouds);
}