#region ================== Copyright (c) 2007 Pascal vd Heiden

/*
 * Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com
 * This program is released under GNU General Public License
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 */

#endregion

#region ================== Namespaces

using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Text;
using System.IO;
using CodeImp.DoomBuilder.Map;
using CodeImp.DoomBuilder.Geometry;
using System.Windows.Forms;
using CodeImp.DoomBuilder.Config;
using CodeImp.DoomBuilder.Types;

#endregion

namespace CodeImp.DoomBuilder.IO
{
	internal class UniversalMapSetIO : MapSetIO
	{
		#region ================== Constants

		// Name of the UDMF configuration file
		private const string UDMF_CONFIG_NAME = "UDMF.cfg";
		
		#endregion

		#region ================== Variables

		private Configuration config;
		
		#endregion
		
		#region ================== Constructor / Disposer

		// Constructor
		public UniversalMapSetIO(WAD wad, MapManager manager) : base(wad, manager)
		{
			// Make configuration
			config = new Configuration();

			// Find a resource named UDMF.cfg
			string[] resnames = General.ThisAssembly.GetManifestResourceNames();
			foreach(string rn in resnames)
			{
				// Found it?
				if(rn.EndsWith(UDMF_CONFIG_NAME, StringComparison.InvariantCultureIgnoreCase))
				{
					// Get a stream from the resource
					Stream udmfcfg = General.ThisAssembly.GetManifestResourceStream(rn);
					StreamReader udmfcfgreader = new StreamReader(udmfcfg, Encoding.ASCII);
					
					// Load configuration from stream
					config.InputConfiguration(udmfcfgreader.ReadToEnd());

					// Now we add the linedef flags, activations and thing flags
					// to this list, so that these don't show up in the custom
					// fields list either. We use true as dummy value (it has no meaning)

					// Add linedef flags
					foreach(KeyValuePair<string, string> flag in General.Map.Config.LinedefFlags)
						config.WriteSetting("managedfields.linedef." + flag.Key, true);

					// Add linedef activations
					foreach(LinedefActivateInfo activate in General.Map.Config.LinedefActivates)
						config.WriteSetting("managedfields.linedef." + activate.Key, true);

					// Add thing flags
					foreach(KeyValuePair<string, string> flag in General.Map.Config.ThingFlags)
						config.WriteSetting("managedfields.thing." + flag.Key, true);
					
					// Done
					udmfcfgreader.Dispose();
					udmfcfg.Dispose();
					break;
				}
			}
		}

		#endregion

		#region ================== Properties

		public override int MaxSidedefs { get { return int.MaxValue; } }
		public override int MaxVertices { get { return int.MaxValue; } }
		public override int MaxLinedefs { get { return int.MaxValue; } }
		public override int MaxSectors { get { return int.MaxValue; } }
		public override int MaxThings { get { return int.MaxValue; } }
		public override int MinTextureOffset { get { return int.MinValue; } }
		public override int MaxTextureOffset { get { return int.MaxValue; } }
		public override int VertexDecimals { get { return 3; } }
		public override string DecimalsFormat { get { return "0.000"; } }
		public override bool HasLinedefTag { get { return true; } }
		public override bool HasThingTag { get { return true; } }
		public override bool HasThingAction { get { return true; } }
		public override bool HasCustomFields { get { return true; } }
		public override bool HasThingHeight { get { return true; } }
		public override bool HasActionArgs { get { return true; } }
		public override bool HasMixedActivations { get { return true; } }
		public override bool HasPresetActivations { get { return false; } }
		public override bool HasBuiltInActivations { get { return false; } }
		public override int MaxTag { get { return int.MaxValue; } }
		public override int MinTag { get { return int.MinValue; } }
		public override int MaxAction { get { return int.MaxValue; } }
		public override int MinAction { get { return int.MinValue; } }
		public override int MaxEffect { get { return int.MaxValue; } }
		public override int MinEffect { get { return int.MinValue; } }
		public override int MaxBrightness { get { return int.MaxValue; } }
		public override int MinBrightness { get { return int.MinValue; } }
		public override int MaxThingType { get { return int.MaxValue; } }
		public override int MinThingType { get { return int.MinValue; } }
		public override double MaxCoordinate { get { return (double)float.MaxValue; } }
		public override double MinCoordinate { get { return (double)float.MinValue; } }
		
		#endregion

		#region ================== Reading
		
		// This reads a map from the file and returns a MapSet
		public override MapSet Read(MapSet map, string mapname)
		{
			UniversalStreamReader udmfreader = new UniversalStreamReader();
			
			// Find the index where first map lump begins
			int firstindex = wad.FindLumpIndex(mapname) + 1;
			
			// Get the TEXTMAP lump from wad file
			Lump lump = wad.FindLump("TEXTMAP", firstindex);
			if(lump == null) throw new Exception("Could not find required lump TEXTMAP!");

			// Read the UDMF data
			lump.Stream.Seek(0, SeekOrigin.Begin);
			udmfreader.SetKnownCustomTypes = true;
			udmfreader.Read(map, lump.Stream);
			
			// Return result
			return map;
		}
		
		#endregion

		#region ================== Writing

		// This writes a MapSet to the file
		public override void Write(MapSet map, string mapname, int position)
		{
			UniversalStreamWriter udmfwriter = new UniversalStreamWriter();
			
			// Write map to memory stream
			MemoryStream memstream = new MemoryStream();
			memstream.Seek(0, SeekOrigin.Begin);
			udmfwriter.RememberCustomTypes = true;
			udmfwriter.Write(map, memstream, manager.Config.EngineName);

			// Find insert position and remove old lump
			int insertpos = MapManager.RemoveSpecificLump(wad, "TEXTMAP", position, MapManager.TEMP_MAP_HEADER, manager.Config.MapLumpNames);
			if(insertpos == -1) insertpos = position + 1;
			if(insertpos > wad.Lumps.Count) insertpos = wad.Lumps.Count;

			// Create the lump from memory
			Lump lump = wad.Insert("TEXTMAP", insertpos, (int)memstream.Length);
			lump.Stream.Seek(0, SeekOrigin.Begin);
			memstream.WriteTo(lump.Stream);

			// Done
			memstream.Dispose();
		}
		
		#endregion
	}
}