/// <summary>
/// This method is responsible to send http request to the provided URL and get the reponse to XML,
/// The XML will provide all the detalis we need to build Weather Data instance and return it.
/// </summary>
public WeatherData GetWeatherData(Location location)
{
//wData is the instance that holds the weather info.
var wData = new WeatherData();
//xdoc is var that holds the xml elements and parse them
XDocument xdoc;
//api var holds the http response.
var api = string.Format("http://api.worldweatheronline.com/free/v2/weather.ashx?key=dbc688a2aa9e77e11005ceb43ab37&q={0}&format=xml", location.Name);
//Parse the XML
try
{
xdoc = XDocument.Load(api);
var list = from item in xdoc.Descendants("data")
select new
{
Name = item.Element("request").Element("query").Value,
LastTime = item.Element("current_condition").Element("observation_time").Value,
TempValue = item.Element("current_condition").Element("temp_C").Value,
LastDate = item.Element("weather").Element("date").Value,
SunRise = item.Element("weather").Element("astronomy").Element("sunrise").Value,
SunSet = item.Element("weather").Element("astronomy").Element("sunset").Value,
WindSpeedValue = item.Element("weather").Element("hourly").Element("windspeedMiles").Value,
IconName = item.Element("weather").Element("hourly").Element("weatherIconUrl").Value,
IconText = item.Element("weather").Element("hourly").Element("weatherDesc").Value
};
//Insert the relevant parameters to wData instance.
foreach (var data in list)
{
wData.City = new City();
var tokens = data.Name.Split(',');
wData.City.Name = tokens[0];
wData.City.Country = tokens[1];
wData.City.Sun.Rise = DateTime.Parse(data.SunRise);
wData.City.Sun.Set = DateTime.Parse(data.SunSet);
wData.Temp = new Temperature();
wData.Temp.Value = double.Parse(data.TempValue);
wData.Wind = new Wind();
wData.Wind.Speed = new Speed();
wData.Wind.Speed.Value = double.Parse(data.WindSpeedValue);
wData.Weather = new Weather();
wData.Weather.Icon = data.IconName;
wData.Weather.Value = data.IconText;
wData.LastUpdateTime = DateTime.Parse(data.LastDate + " " + data.LastTime);
}
}
//Exceptions
catch (WebException)
{
throw new WeatherDataServiceException("Web connectivity Exception");
}
catch (Exception)
{
throw new WeatherDataServiceException("Parsing Exception");
}
//return the wData instance which now is updated .
return wData;
}
public void GetWeatherDataTest()
{
//location is a city that I choose : "bay yam" to compare the data .
Location location = new Location("bat yam");
///wDataTest holds the Weather Data info for Bat yam city in IL, it's the object that return from the method.
WeatherData wDataTest = OpenMapDataService.Instance.GetWeatherData(location);
//request the data from web service.
XDocument xdoc;
//api var holds the http response.
var api = string.Format("http://api.openweathermap.org/data/2.5/weather?q={0}&mode=xml", location.Name);
//Parse the xdoc and get the relevant info.
try
{
xdoc = XDocument.Load(api);
var list = from item in xdoc.Descendants("current")
select new
{
Name = item.Element("city").Attribute("name").Value,
CoordLat = item.Element("city").Element("coord").Attribute("lat").Value,
CoordLon = item.Element("city").Element("coord").Attribute("lon").Value,
Country = item.Element("city").Element("country").Value,
SunRise = item.Element("city").Element("sun").Attribute("rise").Value,
SunSet = item.Element("city").Element("sun").Attribute("set").Value,
TempValue = item.Element("temperature").Attribute("value").Value,
WindSpeedValue = item.Element("wind").Element("speed").Attribute("value").Value,
WindSpeedText = item.Element("wind").Element("speed").Attribute("name").Value,
IconName = item.Element("weather").Attribute("icon").Value,
IconText = item.Element("weather").Attribute("value").Value,
LastUpdate = item.Element("lastupdate").Attribute("value").Value
};
//Check if the Data is Equal
foreach (var data in list)
{
//Check City parameters
Assert.AreEqual(wDataTest.City.Name, data.Name);
Assert.AreEqual(wDataTest.City.Country, data.Country);
Assert.AreEqual(wDataTest.City.Coords.Lat,double.Parse(data.CoordLat));
Assert.AreEqual(wDataTest.City.Coords.Lon,double.Parse(data.CoordLon));
Assert.AreEqual(wDataTest.City.Sun.Rise,DateTime.Parse(data.SunRise));
Assert.AreEqual(wDataTest.City.Sun.Set,DateTime.Parse(data.SunSet));
//Check Temp parameters
Console.WriteLine(double.Parse(data.TempValue)- 272.15);
Console.WriteLine(wDataTest.Temp.Value);
Assert.AreEqual(wDataTest.Temp.Value, double.Parse(data.TempValue) - 272.15);
//Check Wind parameters
Assert.AreEqual(wDataTest.Wind.Speed.Value,double.Parse(data.WindSpeedValue));
Assert.AreEqual(wDataTest.Wind.Speed.Name,data.WindSpeedText);
//Check the Time
Assert.AreEqual(wDataTest.LastUpdateTime,DateTime.Parse(data.LastUpdate));
Assert.Inconclusive("Verify the correctness of this test method.");
}
}
//Exceptions
catch (AssertFailedException)
{
throw new WeatherDataServiceException("The Comparsion between the objects is failed");
}
catch (WebException)
{
throw new WeatherDataServiceException("Web connectivity Exception");
}
catch (Exception)
{
throw new WeatherDataServiceException("Parsing Exception");
}
}
/// <summary>
/// This method is responsible to send http request to the web service and get the reponse to XML,
/// The XML will provide all the info we need to build wData instance and return it.
/// </summary>
public WeatherData GetWeatherData(Location location)
{
//xdoc is var that holds the xml elements and parse them
XDocument xdoc;
//wData is the instance that holds the weather info.
var wData = new WeatherData();
//api var holds the http response.
var api = string.Format("http://api.openweathermap.org/data/2.5/weather?q={0}&mode=xml", location.Name);
try
{
//Parse the xdoc and get the relevant info.
xdoc = XDocument.Load(api);
var list = from item in xdoc.Descendants("current")
select new
{
Name = item.Element("city").Attribute("name").Value,
CoordLat = item.Element("city").Element("coord").Attribute("lat").Value,
CoordLon = item.Element("city").Element("coord").Attribute("lon").Value,
Country = item.Element("city").Element("country").Value,
SunRise = item.Element("city").Element("sun").Attribute("rise").Value,
SunSet = item.Element("city").Element("sun").Attribute("set").Value,
TempValue = item.Element("temperature").Attribute("value").Value,
WindSpeedValue = item.Element("wind").Element("speed").Attribute("value").Value,
WindSpeedText = item.Element("wind").Element("speed").Attribute("name").Value,
IconName = item.Element("weather").Attribute("icon").Value,
IconText = item.Element("weather").Attribute("value").Value,
LastUpdate = item.Element("lastupdate").Attribute("value").Value
};
//Insert the relevant parameters to wData instance.
foreach (var data in list)
{
//Insert the city parameters
wData.City = new City();
wData.City.Name = data.Name;
wData.City.Country = data.Country;
wData.City.Coords.Lat = double.Parse(data.CoordLat);
wData.City.Coords.Lon = double.Parse(data.CoordLon);
wData.City.Sun.Rise = DateTime.Parse(data.SunRise);
wData.City.Sun.Set = DateTime.Parse(data.SunSet);
//Insert the temperature parameters
wData.Temp = new Temperature();
wData.Temp.Value = double.Parse(data.TempValue);
//Kelvin unit becomes C
wData.Temp.Value -= 272.15;
//Insert the wind parameters
wData.Wind = new Wind();
wData.Wind.Speed = new Speed();
wData.Wind.Speed.Value = double.Parse(data.WindSpeedValue);
wData.Wind.Speed.Name = data.WindSpeedText;
//Insert the weather conclusion with the suitable icon.
wData.Weather = new Weather();
wData.Weather.Icon = "http://openweathermap.org/img/w/" + data.IconName + ".png";
wData.Weather.Value = data.IconText;
//Insert the last update time
wData.LastUpdateTime = DateTime.Parse(data.LastUpdate);
}
}
//Exceptions
catch (WebException)
{
throw new WeatherDataServiceException("Web connectivity Exception");
}
catch (Exception)
{
throw new WeatherDataServiceException("Parsing Exception");
}
//return the wData instance.
return wData;
}
