static void PrintResultsToDisk(GeoLocationResult result)
{
string json = JsonConvert.SerializeObject(result);
//Defaults to: ..\repos\RailtownBE5Assignment\RailtownBE5Assignment\RailtownBE5Assignment\bin\Debug
File.AppendAllText($"{Directory.GetCurrentDirectory()}/output.json", json);
}
public GeoLocationResult GetGeoLocation(IPAddress address, NameValueCollection config)
{
string text = config["databaseFileName"];
if (!string.IsNullOrEmpty(text))
{
maxMindDatabaseFileName = VirtualPathUtilityEx.RebasePhysicalPath(text);
config.Remove("databaseFileName");
}
if (string.IsNullOrWhiteSpace(maxMindDatabaseFileName))
{
throw new ArgumentException("db name is not provided");
}
if (!System.IO.File.Exists(maxMindDatabaseFileName))
{
throw new ArgumentException(string.Format("db does not exist at location {0}", maxMindDatabaseFileName));
}
if (address.AddressFamily != AddressFamily.InterNetwork &&
address.AddressFamily != AddressFamily.InterNetworkV6)
{
return(null);
}
try
{
using (var reader = new DatabaseReader(maxMindDatabaseFileName))
{
var dbResult = reader.City(address);
if (dbResult == null)
{
return(null);
}
GeoLocationResult result = new GeoLocationResult();
result.CountryCode = dbResult.Country.IsoCode;
result.CountryName = dbResult.Country.Name;
result.Latitude = dbResult.Location.Latitude ?? 0;
result.Longitude = dbResult.Location.Longitude ?? 0;
result.MetroCode = dbResult.Location.MetroCode ?? 0;
result.City = dbResult.City.Name;
result.PostalCode = dbResult.Postal.Code;
result.CountinentCode = dbResult.Continent.Code;
result.Region = dbResult?.MostSpecificSubdivision?.IsoCode;
result.RegionName = dbResult.MostSpecificSubdivision?.Name;
return(result);
}
}
catch (Exception ex)
{
throw;
}
}
public async Task GetFarthestDistance()
{
IGeoLocationService service = new GeoLocationService();
GeoLocationResult result = service.GetFarthestUsers(CreateMockUsers());
Assert.Equal("Vancouver", result.UserOne.Name);
Assert.Equal("Toronto", result.UserTwo.Name);
//Google says 3364 km
//Searched "distance from vancouver to toronto by flight"
//https://www.movable-type.co.uk/scripts/latlong.html says 3362 km with
//Toronto : 43 39 3.8 N, 79 20 49.2 W
//Vancouver : 49 14 46.6 N, 123 6 58.4 W
Assert.Equal(3362, Math.Round(result.Distance));
}
static async Task CalculateResults()
{
ServiceProvider provider = ConfigureServices();
ILocationServiceAdapter locationAdapter = provider.GetService <ILocationServiceAdapter>();
IGeoLocationService geoService = provider.GetService <IGeoLocationService>();
IUser[] users = await locationAdapter.GetUsers("https://jsonplaceholder.typicode.com/users");
GeoLocationResult result = geoService.GetFarthestUsers(users);
Console.WriteLine($"Farthest distance is: {result.Distance} km");
Console.WriteLine();
result.UserOne.PrintUser();
Console.WriteLine();
result.UserTwo.PrintUser();
PrintResultsToDisk(result);
}
