using System;
using System.Collections;
using System.Text;
using System.IO;
using com.drew.metadata;
using com.drew.lang;
using com.utils;
using System.Globalization;

/// <summary>
/// This class was first written by Drew Noakes in Java.
///
/// This is public domain software - that is, you can do whatever you want
/// with it, and include it software that is licensed under the GNU or the
/// BSD license, or whatever other licence you choose, including proprietary
/// closed source licenses.  I do ask that you leave this header in tact.
///
/// If you make modifications to this code that you think would benefit the
/// wider community, please send me a copy and I'll post it on my site.
///
/// If you make use of this code, Drew Noakes will appreciate hearing 
/// about it: <a href="mailto:drew@drewnoakes.com">drew@drewnoakes.com</a>
///
/// Latest Java version of this software kept at 
/// <a href="http://drewnoakes.com">http://drewnoakes.com/</a>
///
/// The C# class was made by Ferret Renaud: 
/// <a href="mailto:renaud91@free.fr">renaud91@free.fr</a>
/// If you find a bug in the C# code, feel free to mail me.
/// </summary>
namespace com.drew.metadata.exif
{
	/// <summary>
	/// The GPS Directory class
	/// </summary>
	public class GpsDirectory : Directory 
	{
		/// <summary>
		/// GPS tag version GPSVersionID 0 0 BYTE 4
		/// </summary>
		public const int TAG_GPS_VERSION_ID = 0x0000;
		/// <summary>
		/// North or South Latitude GPSLatitudeRef 1 1 ASCII 2
		/// </summary>
		public const int TAG_GPS_LATITUDE_REF = 0x0001;
		/// <summary>
		/// Latitude GPSLatitude 2 2 RATIONAL 3
		/// </summary>
		public const int TAG_GPS_LATITUDE = 0x0002;
		/// <summary>
		/// East or West Longitude GPSLongitudeRef 3 3 ASCII 2
		/// </summary>
		public const int TAG_GPS_LONGITUDE_REF = 0x0003;
		/// <summary>
		/// Longitude GPSLongitude 4 4 RATIONAL 3
		/// </summary>
		public const int TAG_GPS_LONGITUDE = 0x0004;
		/// <summary>
		/// Altitude reference GPSAltitudeRef 5 5 BYTE 1
		/// </summary>
		public const int TAG_GPS_ALTITUDE_REF = 0x0005;
		/// <summary>
		/// Altitude GPSAltitude 6 6 RATIONAL 1
		/// </summary>
		public const int TAG_GPS_ALTITUDE = 0x0006;
		/// <summary>
		/// GPS time (atomic clock) GPSTimeStamp 7 7 RATIONAL 3
		/// </summary>
		public const int TAG_GPS_TIME_STAMP = 0x0007;
		/// <summary>
		/// GPS satellites used for measurement GPSSatellites 8 8 ASCII Any
		/// </summary>
		public const int TAG_GPS_SATELLITES = 0x0008;
		/// <summary>
		/// GPS receiver status GPSStatus 9 9 ASCII 2
		/// </summary>
		public const int TAG_GPS_STATUS = 0x0009;
		/// <summary>
		/// GPS measurement mode GPSMeasureMode 10 A ASCII 2
		/// </summary>
		public const int TAG_GPS_MEASURE_MODE = 0x000A;
		/// <summary>
		/// Measurement precision GPSDOP 11 B RATIONAL 1
		/// </summary>
		public const int TAG_GPS_DOP = 0x000B;
		/// <summary>
		/// Speed unit GPSSpeedRef 12 C ASCII 2
		/// </summary>
		public const int TAG_GPS_SPEED_REF = 0x000C;
		/// <summary>
		/// Speed of GPS receiver GPSSpeed 13 D RATIONAL 1
		/// </summary>
		public const int TAG_GPS_SPEED = 0x000D;
		/// <summary>
		/// Reference for direction of movement GPSTrackRef 14 E ASCII 2
		/// </summary>
		public const int TAG_GPS_TRACK_REF = 0x000E;
		/// <summary>
		/// Direction of movement GPSTrack 15 F RATIONAL 1
		/// </summary>
		public const int TAG_GPS_TRACK = 0x000F;
		/// <summary>
		/// Reference for direction of image GPSImgDirectionRef 16 10 ASCII 2
		/// </summary>
		public const int TAG_GPS_IMG_DIRECTION_REF = 0x0010;
		/// <summary>
		/// Direction of image GPSImgDirection 17 11 RATIONAL 1
		/// </summary>
		public const int TAG_GPS_IMG_DIRECTION = 0x0011;
		/// <summary>
		/// Geodetic survey data used GPSMapDatum 18 12 ASCII Any
		/// </summary>
		public const int TAG_GPS_MAP_DATUM = 0x0012;
		/// <summary>
		/// Reference for latitude of destination GPSDestLatitudeRef 19 13 ASCII 2
		/// </summary>
		public const int TAG_GPS_DEST_LATITUDE_REF = 0x0013;
		/// <summary>
		/// Latitude of destination GPSDestLatitude 20 14 RATIONAL 3
		/// </summary>
		public const int TAG_GPS_DEST_LATITUDE = 0x0014;
		/// <summary>
		/// Reference for longitude of destination GPSDestLongitudeRef 21 15 ASCII 2
		/// </summary>
		public const int TAG_GPS_DEST_LONGITUDE_REF = 0x0015;
		/// <summary>
		/// Longitude of destination GPSDestLongitude 22 16 RATIONAL 3
		/// </summary>
		public const int TAG_GPS_DEST_LONGITUDE = 0x0016;
		/// <summary>
		/// Reference for bearing of destination GPSDestBearingRef 23 17 ASCII 2
		/// </summary>
		public const int TAG_GPS_DEST_BEARING_REF = 0x0017;
		/// <summary>
		/// Bearing of destination GPSDestBearing 24 18 RATIONAL 1
		/// </summary>
		public const int TAG_GPS_DEST_BEARING = 0x0018;
		/// <summary>
		/// Reference for distance to destination GPSDestDistanceRef 25 19 ASCII 2
		/// </summary>
		public const int TAG_GPS_DEST_DISTANCE_REF = 0x0019;
		/// <summary>
		/// Distance to destination GPSDestDistance 26 1A RATIONAL 1
		/// </summary>
		public const int TAG_GPS_DEST_DISTANCE = 0x001A;

		protected static readonly ResourceBundle BUNDLE = new ResourceBundle("GpsMarkernote");
		protected static readonly IDictionary tagNameMap = GpsDirectory.InitTagMap();

		/// <summary>
		/// Initialize the tag map.
		/// </summary>
		/// <returns>the tag map</returns>
		private static IDictionary InitTagMap() 
		{
			// Create a Hashtable using a case-insensitive code provider and a case-insensitive comparer,
			// based on the Spanish culture (es-AR), where "I" is not the uppercase version of "i".
			CultureInfo myCul = new CultureInfo( "es-AR" );
			IDictionary resu = new Hashtable( new CaseInsensitiveHashCodeProvider( myCul ), new CaseInsensitiveComparer( myCul ));
			
			//IDictionary resu = new Hashtable();
			resu.Add(TAG_GPS_VERSION_ID, BUNDLE["TAG_GPS_VERSION_ID"]);
			resu.Add(TAG_GPS_LATITUDE_REF, BUNDLE["TAG_GPS_LATITUDE_REF"]);
			resu.Add(TAG_GPS_LATITUDE, BUNDLE["TAG_GPS_LATITUDE"]);
			resu.Add(TAG_GPS_LONGITUDE_REF, BUNDLE["TAG_GPS_LONGITUDE_REF"]);
			resu.Add(TAG_GPS_LONGITUDE, BUNDLE["TAG_GPS_LONGITUDE"]);
			resu.Add(TAG_GPS_ALTITUDE_REF, BUNDLE["TAG_GPS_ALTITUDE_REF"]);
			resu.Add(TAG_GPS_ALTITUDE, BUNDLE["TAG_GPS_ALTITUDE"]);
			resu.Add(TAG_GPS_TIME_STAMP, BUNDLE["TAG_GPS_TIME_STAMP"]);
			resu.Add(TAG_GPS_SATELLITES, BUNDLE["TAG_GPS_SATELLITES"]);
			resu.Add(TAG_GPS_STATUS, BUNDLE["TAG_GPS_STATUS"]);
			resu.Add(TAG_GPS_MEASURE_MODE, BUNDLE["TAG_GPS_MEASURE_MODE"]);
			resu.Add(TAG_GPS_DOP, BUNDLE["TAG_GPS_DOP"]);
			resu.Add(TAG_GPS_SPEED_REF, BUNDLE["TAG_GPS_SPEED_REF"]);
			resu.Add(TAG_GPS_SPEED, BUNDLE["TAG_GPS_SPEED"]);
			resu.Add(TAG_GPS_TRACK_REF, BUNDLE["TAG_GPS_TRACK_REF"]);
			resu.Add(TAG_GPS_TRACK, BUNDLE["TAG_GPS_TRACK"]);
			resu.Add(TAG_GPS_IMG_DIRECTION_REF, BUNDLE["TAG_GPS_IMG_DIRECTION_REF"]);
			resu.Add(TAG_GPS_IMG_DIRECTION, BUNDLE["TAG_GPS_IMG_DIRECTION"]);
			resu.Add(TAG_GPS_MAP_DATUM, BUNDLE["TAG_GPS_MAP_DATUM"]);
			resu.Add(TAG_GPS_DEST_LATITUDE_REF, BUNDLE["TAG_GPS_DEST_LATITUDE_REF"]);
			resu.Add(TAG_GPS_DEST_LATITUDE, BUNDLE["TAG_GPS_DEST_LATITUDE"]);
			resu.Add(TAG_GPS_DEST_LONGITUDE_REF, BUNDLE["TAG_GPS_DEST_LONGITUDE_REF"]);
			resu.Add(TAG_GPS_DEST_LONGITUDE, BUNDLE["TAG_GPS_DEST_LONGITUDE"]);
			resu.Add(TAG_GPS_DEST_BEARING_REF, BUNDLE["TAG_GPS_DEST_BEARING_REF"]);
			resu.Add(TAG_GPS_DEST_BEARING, BUNDLE["TAG_GPS_DEST_BEARING"]);
			resu.Add(TAG_GPS_DEST_DISTANCE_REF, BUNDLE["TAG_GPS_DEST_DISTANCE_REF"]);
			resu.Add(TAG_GPS_DEST_DISTANCE, BUNDLE["TAG_GPS_DEST_DISTANCE"]);
			return resu;
		}

		/// <summary>
		/// Constructor of the object.
		/// </summary>
		public GpsDirectory() : base()
		{
			this.SetDescriptor(new GpsDescriptor(this));
		}

		/// <summary>
		/// Provides the name of the directory, for display purposes.  E.g. Exif 
		/// </summary>
		/// <returns>the name of the directory</returns>
		public override string GetName() 
		{
			return BUNDLE["MARKER_NOTE_NAME"];
		}

		/// <summary>
		/// Provides the map of tag names, hashed by tag type identifier. 
		/// </summary>
		/// <returns>the map of tag names</returns>
		protected override IDictionary GetTagNameMap() 
		{
			return tagNameMap;
		}
	} 
}