public GelocationCacheItem PerformLocationLookup(double latitude, double longitude, List <Country> ocmCountryList)
{
//http://api.geonames.org/countryCodeJSON?formatted=true&lat=41.55111&lng=10.2&username<userid>&style=full
//http://api.geonames.org/findNearbyPlaceNameJSON?formatted=true&lat=47.3&lng=9&username=<userid>&style=full
try
{
//round position to 3 decimal places, or 111 meters accuracy
latitude = Math.Round(latitude, 3);
longitude = Math.Round(longitude, 3);
//lookup item in existing cache, if not present create new item
var cacheHit = GeolocationCache.FirstOrDefault(g => g.Latitude == latitude && g.Longitude == longitude);
if (cacheHit != null)
{
return(cacheHit);
}
else
{
GelocationCacheItem cacheItem = new GelocationCacheItem();
string serviceURL = CountryCodeLookupServiceURL.Replace("{latitude}", latitude.ToString()).Replace("{longitude}", longitude.ToString()).Replace("{userid}", GeonamesAPIUserName);
WebRequest request = WebRequest.Create(serviceURL);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (StreamReader streamReader = new StreamReader(response.GetResponseStream()))
{
string responseText = streamReader.ReadToEnd();
if (responseText.Contains("countryName"))
{
//example response
/*{
* "languages": "de-AT,hr,hu,sl",
* "distance": 0,
* "countryName": "Austria",
* "countryCode": "AT"
* }*/
JObject responseObject = JObject.Parse(responseText);
cacheItem.CountryName = responseObject["countryName"].ToString();
cacheItem.CountryCode = responseObject["countryCode"].ToString();
cacheItem.LanguageCodes = responseObject["languages"].ToString();
cacheItem.Longitude = longitude;
cacheItem.Latitude = latitude;
var countryInfo = ocmCountryList.FirstOrDefault(o => o.ISOCode == cacheItem.CountryCode || o.Title == cacheItem.CountryName);
if (countryInfo != null)
{
cacheItem.CountryID = countryInfo.ID;
}
else
{
LogHelper.Log("Country not found in OCM list:" + cacheItem.CountryName);
}
LogHelper.Log("Geocache item created:" + cacheItem.CountryName);
GeolocationCache.Add(cacheItem);
SaveCache();
}
}
return(cacheItem);
}
}
catch (Exception)
{
//failed
return(null);
}
}
public GelocationCacheItem PerformLocationLookup(double latitude, double longitude, List<Country> ocmCountryList)
{
//http://api.geonames.org/countryCodeJSON?formatted=true&lat=41.55111&lng=10.2&username<userid>&style=full
//http://api.geonames.org/findNearbyPlaceNameJSON?formatted=true&lat=47.3&lng=9&username=<userid>&style=full
try
{
//round position to 3 decimal places, or 111 meters accuracy
latitude = Math.Round(latitude, 3);
longitude = Math.Round(longitude, 3);
//lookup item in existing cache, if not present create new item
var cacheHit = GeolocationCache.FirstOrDefault(g => g.Latitude == latitude && g.Longitude == longitude);
if (cacheHit != null)
{
return cacheHit;
}
else
{
GelocationCacheItem cacheItem = new GelocationCacheItem();
string serviceURL = CountryCodeLookupServiceURL.Replace("{latitude}", latitude.ToString()).Replace("{longitude}", longitude.ToString()).Replace("{userid}", GeonamesAPIUserName);
WebRequest request = WebRequest.Create(serviceURL);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (StreamReader streamReader = new StreamReader(response.GetResponseStream()))
{
string responseText = streamReader.ReadToEnd();
if (responseText.Contains("countryName"))
{
//example response
/*{
"languages": "de-AT,hr,hu,sl",
"distance": 0,
"countryName": "Austria",
"countryCode": "AT"
}*/
JObject responseObject = JObject.Parse(responseText);
cacheItem.CountryName = responseObject["countryName"].ToString();
cacheItem.CountryCode = responseObject["countryCode"].ToString();
cacheItem.LanguageCodes = responseObject["languages"].ToString();
cacheItem.Longitude = longitude;
cacheItem.Latitude = latitude;
var countryInfo = ocmCountryList.FirstOrDefault(o => o.ISOCode == cacheItem.CountryCode || o.Title == cacheItem.CountryName);
if (countryInfo != null)
{
cacheItem.CountryID = countryInfo.ID;
}
else
{
LogHelper.Log("Country not found in OCM list:" + cacheItem.CountryName);
}
LogHelper.Log("Geocache item created:" + cacheItem.CountryName);
GeolocationCache.Add(cacheItem);
SaveCache();
}
}
return cacheItem;
}
}
catch (Exception)
{
//failed
return null;
}
}
