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namespace GMap.NET.MapProviders
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{
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   using System;
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   using GMap.NET.Projections;
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   using System.Globalization;
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   /// <summary>
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   /// MapBender provider, WMS demo http://www.mapbender.org/
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   /// </summary>
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   public class MapBenderWMSProvider : GMapProvider
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   {
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      public static readonly MapBenderWMSProvider Instance;
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      MapBenderWMSProvider()
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      {
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      }
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      static MapBenderWMSProvider()
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      {
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         Instance = new MapBenderWMSProvider();
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      }
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      #region GMapProvider Members
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      readonly Guid id = new Guid("45742F8D-B552-4CAF-89AE-F20951BBDB2B");
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      public override Guid Id
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      {
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         get
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         {
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            return id;
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         }
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      }
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      readonly string name = "MapBender, WMS demo";
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      public override string Name
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      {
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         get
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         {
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            return name;
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         }
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      }
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      GMapProvider[] overlays;
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      public override GMapProvider[] Overlays
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      {
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         get
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         {
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            if(overlays == null)
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            {
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               overlays = new GMapProvider[] { this };
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            }
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            return overlays;
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         }
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      }
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      public override PureProjection Projection
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      {
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         get
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         {
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            return MercatorProjection.Instance;
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         }
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      }
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      public override PureImage GetTileImage(GPoint pos, int zoom)
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      {
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         string url = MakeTileImageUrl(pos, zoom, LanguageStr);
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         return GetTileImageUsingHttp(url);
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      }
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      #endregion
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      string MakeTileImageUrl(GPoint pos, int zoom, string language)
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      {
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         var px1 = Projection.FromTileXYToPixel(pos);
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         var px2 = px1;
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         px1.Offset(0, Projection.TileSize.Height);
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         PointLatLng p1 = Projection.FromPixelToLatLng(px1, zoom);
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         px2.Offset(Projection.TileSize.Width, 0);
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         PointLatLng p2 = Projection.FromPixelToLatLng(px2, zoom);
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         var ret = string.Format(CultureInfo.InvariantCulture, UrlFormat, p1.Lng, p1.Lat, p2.Lng, p2.Lat, Projection.TileSize.Width, Projection.TileSize.Height);
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         return ret;
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      }
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      static readonly string UrlFormat = "http://mapbender.wheregroup.com/cgi-bin/mapserv?map=/data/umn/osm/osm_basic.map&VERSION=1.1.1&REQUEST=GetMap&SERVICE=WMS&LAYERS=OSM_Basic&styles=&bbox={0},{1},{2},{3}&width={4}&height={5}&srs=EPSG:4326&format=image/png";
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   }
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}