#region Copyright & License Information
/*
 * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version. For more
 * information, see COPYING.
 */
#endregion

using System.Collections.Generic;
using System.IO;

namespace OpenRA.FileSystem
{
	public sealed class Folder : IReadWritePackage
	{
		readonly string path;

		public Folder(string path)
		{
			this.path = path;
			if (!Directory.Exists(path))
				Directory.CreateDirectory(path);
		}

		public string Name { get { return path; } }

		public IEnumerable<string> Contents
		{
			get
			{
				foreach (var filename in Directory.GetFiles(path, "*", SearchOption.TopDirectoryOnly))
					yield return Path.GetFileName(filename);
			}
		}

		public Stream GetStream(string filename)
		{
			try { return File.OpenRead(Path.Combine(path, filename)); }
			catch { return null; }
		}

		public bool Contains(string filename)
		{
			var combined = Path.Combine(path, filename);
			return combined.StartsWith(path) && File.Exists(combined);
		}

		public void Update(string filename, byte[] contents)
		{
			if (!Directory.Exists(path))
				Directory.CreateDirectory(path);

			using (var s = File.Create(Path.Combine(path, filename)))
				s.Write(contents, 0, contents.Length);
		}

		public void Delete(string filename)
		{
			var filePath = Path.Combine(path, filename);
			if (Directory.Exists(filePath))
				Directory.Delete(filePath, true);
			else if (File.Exists(filePath))
				File.Delete(filePath);
		}

		public void Dispose() { }
	}
}