1 files changed, 86 insertions, 0 deletions
diff --git a/Xamarin.Forms.Maps.UWP/GeocoderBackend.cs b/Xamarin.Forms.Maps.UWP/GeocoderBackend.cs
new file mode 100644
index 00000000..10f624a6
--- /dev/null
+++ b/Xamarin.Forms.Maps.UWP/GeocoderBackend.cs
@@ -0,0 +1,86 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Windows.Devices.Geolocation;
+using Windows.Services.Maps;
+
+#if WINDOWS_UWP
+
+namespace Xamarin.Forms.Maps.UWP
+#else
+
+namespace Xamarin.Forms.Maps.WinRT
+#endif
+{
+	internal class GeocoderBackend
+	{
+		public static void Register()
+		{
+			Geocoder.GetPositionsForAddressAsyncFunc = GetPositionsForAddress;
+			Geocoder.GetAddressesForPositionFuncAsync = GetAddressesForPositionAsync;
+		}
+
+		static string AddressToString(MapAddress address)
+		{
+			string building = "", house = "", city = "", country = "";
+
+			var bldg = new List<string>();
+			if (!"".Equals(address.BuildingRoom))
+				bldg.Add(address.BuildingRoom);
+			if (!"".Equals(address.BuildingFloor))
+				bldg.Add(address.BuildingFloor);
+			if (!"".Equals(address.BuildingName))
+				bldg.Add(address.BuildingName);
+			if (!"".Equals(address.BuildingWing))
+				bldg.Add(address.BuildingWing);
+			if (bldg.Count > 0)
+				building = string.Join(" ", bldg) + Environment.NewLine;
+
+			var hs = new List<string>();
+			if (!"".Equals(address.StreetNumber))
+				hs.Add(address.StreetNumber);
+			if (!"".Equals(address.Street))
+				hs.Add(address.Street);
+			if (hs.Count > 0)
+				house = string.Join(" ", hs) + Environment.NewLine;
+
+			var cs = new List<string>();
+			if (!"".Equals(address.Town))
+				cs.Add(address.Town);
+			if (!"".Equals(address.Neighborhood))
+				cs.Add(address.Neighborhood);
+			else if (!"".Equals(address.Region))
+				cs.Add(address.Region);
+			if (!"".Equals(address.PostCode))
+				cs.Add(address.PostCode);
+			if (cs.Count > 0)
+				city = string.Join(" ", cs) + Environment.NewLine;
+
+			if (!"".Equals(address.Country))
+				country = address.Country;
+			return building + house + city + country;
+		}
+
+		static async Task<IEnumerable<string>> GetAddressesForPositionAsync(Position position)
+		{
+			var queryResults =
+				await
+					MapLocationFinder.FindLocationsAtAsync(
+						new Geopoint(new BasicGeoposition { Latitude = position.Latitude, Longitude = position.Longitude }));
+			var addresses = new List<string>();
+			foreach (var result in queryResults?.Locations)
+				addresses.Add(AddressToString(result.Address));
+
+			return addresses;
+		}
+
+		static async Task<IEnumerable<Position>> GetPositionsForAddress(string address)
+		{
+			var queryResults = await MapLocationFinder.FindLocationsAsync(address, null, 10);
+			var positions = new List<Position>();
+			foreach (var result in queryResults?.Locations)
+				positions.Add(new Position(result.Point.Position.Latitude, result.Point.Position.Longitude));
+			return positions;
+		}
+	}
+}
+\ No newline at end of file