// This file (AbstractNonNativeFileExtensionWarFoundryFactory.cs) is a part of the IBBoard.WarFoundry.API project and is copyright 2009 IBBoard.
//
// The file and the library/program it is in are licensed under the GNU LGPL license, either version 3 of the License or (at your option) any later version. Please see COPYING.LGPL for more information and the full license.

using System;
using System.Collections.Generic;
using System.IO;
using IBBoard.WarFoundry.API.Objects;

namespace IBBoard.WarFoundry.API.Factories
{	
	public abstract class AbstractNonNativeFileExtensionWarFoundryFactory : AbstractNonNativeWarFoundryFactory<FileInfo>
	{
		protected abstract string ArmyFileExtension { get; }
		protected abstract string RaceFileExtension { get; }
		protected abstract string GameSystemFileExtension { get; }
		
		protected override bool CheckCanHandleFileFormat (FileInfo file)
		{
			return CheckCanHandleFileAsArmy(file) || CheckCanHandleFileAsRace(file) || CheckCanHandleFileAsGameSystem(file);
		}
		
		protected override bool CheckCanHandleFileAsArmy(FileInfo file)
		{
			return ArmyFileExtension!=null && file.Name.ToLower().EndsWith(ArmyFileExtension);
		}
		
		protected override bool CheckCanHandleFileAsRace(FileInfo file)
		{
			return RaceFileExtension!=null && file.Name.ToLower().EndsWith(RaceFileExtension);
		}
		
		protected override bool CheckCanHandleFileAsGameSystem(FileInfo file)
		{
			return GameSystemFileExtension!=null && file.Name.ToLower().EndsWith(GameSystemFileExtension);
		}
		
		protected override FileInfo GetFileAsSupportedType (FileInfo file)
		{
			return file;
		}		
		
		protected abstract Army CreateArmyFromFile(FileInfo file);
		protected abstract Race CreateRaceFromFile(FileInfo file);
		protected abstract GameSystem CreateGameSystemFromFile(FileInfo file);
		
		protected override ICollection<IWarFoundryObject> DoCreateObjectsFromFile (FileInfo file)
		{
			ICollection<IWarFoundryObject> objects = new List<IWarFoundryObject>();
			
			if (CheckCanHandleFileAsRace(file))
			{
				objects.Add(CreateRaceFromFile(file));
			}
			else if (CheckCanHandleFileAsGameSystem(file))
			{
				objects.Add(CreateGameSystemFromFile(file));
			}
			else if (CheckCanHandleFileAsArmy(file))
			{
				objects.Add(CreateArmyFromFile(file));
			}
			
			return objects;
		}
	}
}