using System;



namespace Microsoft.Research.DynamicDataDisplay.Charts.Maps.Network

{

	/// <summary>

	/// Sample network tile server, which downloads tile images from OpenStreetMap server.

	/// <remarks>

	/// OpenStreetMap - http://www.openstreetmap.org/

	/// Used here by permission of OpenStreetMap.

	/// To use this sample server in your applications, you should read, agree and follow to

	/// OpenStreetMap license.

	/// Do not use this server too much - do not create high load on OpenStreetMap servers.

	/// OpenStreetMap tile isage policy - http://wiki.openstreetmap.org/wiki/Tile_usage_policy

	/// </remarks>

	/// </summary>

	public sealed class OpenStreetMapServer : NetworkTileServer

	{

		/// <summary>

		/// Initializes a new instance of the <see cref="OpenStreetMapServer"/> class.

		/// </summary>

		public OpenStreetMapServer()

		{

			UriFormat = "http://{3}.{4}/{0}/{1}/{2}.png";

			ServerName = "Open Street Maps";



			XCycling = true;

			MaxLatitude = 85.2878;

			MinLevel = 0;

			MaxLevel = 17;

			MaxConcurrentDownloads = 3;

			ServersNum = 3;

			//todo determine max level

		}



		private OpenStreetMapRenderer renderer = OpenStreetMapRenderer.Mapnik;

		public OpenStreetMapRenderer Renderer

		{

			get { return renderer; }

			set

			{

				renderer = value;

				RaiseChangedEvent();

			}

		}

		

		protected override string CreateRequestUriCore(TileIndex index)

		{

			int z = (int)index.Level;

			int shift = MapTileProvider.GetSideTilesCount(z) / 2;

			int x = index.X + shift;

			int y = MapTileProvider.GetSideTilesCount(z) - 1 - index.Y - shift;



			char serverIdx = (char)('a' + CurrentServer);

			string uri = "";

			switch (renderer)

			{

				case OpenStreetMapRenderer.Mapnik:

					uri = "tile.openstreetmap.org";

					break;

				case OpenStreetMapRenderer.Osmarenderer:

					uri = "tah.openstreetmap.org/Tiles/tile";

					break;

				case OpenStreetMapRenderer.CycleMap:

					uri = "andy.sandbox.cloudmade.com/tiles/cycle";

					break;

				case OpenStreetMapRenderer.NoName:

					uri = "tile.cloudmade.com/fd093e52f0965d46bb1c6c6281022199/3/256";

					break;

				default:

					break;

			}



			return String.Format(UriFormat, z.ToString(), x.ToString(), y.ToString(), serverIdx.ToString(), uri);

		}

	}

}