// This file (WarFoundryLoader.cs) is a part of the IBBoard.WarFoundry.API project and is copyright 2007, 2008, 2009 IBBoard.
//
// The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.
using System;
using System.IO;
using ICSharpCode.SharpZipLib.Zip;
using System.Collections.Generic;
using IBBoard.WarFoundry.API.Factories.Requirement;
using IBBoard.WarFoundry.API.Objects.Requirement;

namespace IBBoard.WarFoundry.API
{
	public class WarFoundryLoader
	{
		public static readonly string DEFAULT_USER_DATA_DIR = Path.Combine(Constants.UserDataPath, "data");
		private static AbstractWarFoundryLoader loader;
		private static Dictionary<string, IRequirementFactory> requirementFactories = new Dictionary<string, IRequirementFactory>();

		/// <summary>
		/// Gets the default <see cref="WarFoundryLoader"/> used to load WarFoundry data files.
		/// </summary>
		/// <returns>
		/// The default <see cref="WarFoundryLoader"/>
		/// </returns>
		public static AbstractWarFoundryLoader GetDefault()
		{
			if (loader == null)
			{
				loader = new DefaultWarFoundryLoader();
			}
			
			return loader;
		}
		
		public static void SetDefault(AbstractWarFoundryLoader newLoader)
		{
			loader = newLoader;
		}

		private WarFoundryLoader()
		{
			//Hide constructor
		}

		public static void RegisterRequirementFactory(IRequirementFactory factory)
		{
			requirementFactories[factory.AppliesToID] = factory;
		}

		public static IRequirementFactory GetRequirementFactory(string requirementID)
		{
			return DictionaryUtils.GetValue(requirementFactories, requirementID);
		}

		/// <summary>
		/// Adds the new data file to the default data directory. Once added, the loader will need to be refreshed to
		/// force it to load the new file.
		/// </summary>
		/// <param name='filePath'>
		/// The path of the file to copy to the default data directory
		/// </param>
		public static void AddNewDataFile(string filePath)
		{
			string newFilePath = System.IO.Path.Combine(WarFoundryLoader.DEFAULT_USER_DATA_DIR, System.IO.Path.GetFileName(filePath));

			if (!Directory.Exists(WarFoundryLoader.DEFAULT_USER_DATA_DIR))
			{
				Directory.CreateDirectory(WarFoundryLoader.DEFAULT_USER_DATA_DIR);
			}

			File.Copy(filePath, newFilePath);
		}
	}
}