using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using OpenRa.FileFormats;

namespace OpenRa.FileFormats
{
	public class Folder : IFolder
	{
		readonly string path;

		public Folder(string path) { this.path = path; }

		public Stream GetContent(string filename)
		{
			try { return File.OpenRead(path + filename); }
			catch { throw new FileNotFoundException("File not found", filename); }
		}
	}

	public static class FileSystem
	{
		static List<IFolder> mountedFolders = new List<IFolder>();

		public static void Mount(IFolder folder)
		{
			mountedFolders.Add(folder);
		}

		public static Stream Open(string filename)
		{
			foreach (IFolder folder in mountedFolders)
				try { return folder.GetContent(filename); }
				catch { }

			throw new FileNotFoundException("File not found", filename);
		}
	}
}