using System;
using System.IO;
using System.Linq;
using Ionic.Zip;

namespace CPF.ReoGrid.Utility
{
	internal class MZipArchive : IZipArchive
	{
		private MZipArchive()
		{
		}

		internal static MZipArchive OpenOnStream(Stream stream)
		{
			return new MZipArchive
			{
				zip = ZipFile.Read(stream),
				stream = stream
			};
		}

		internal static MZipArchive CreateOnStream(Stream stream)
		{
			return new MZipArchive
			{
				zip = new ZipFile(),
				stream = stream
			};
		}

		public IZipEntry GetFile(string path)
		{
			ZipEntry zipEntry = this.zip.SingleOrDefault((ZipEntry e) => e.FileName == path);
			bool flag = zipEntry == null;
			IZipEntry result;
			if (flag)
			{
				result = null;
			}
			else
			{
				result = new MZipEntry(zipEntry);
			}
			return result;
		}

		public IZipEntry AddFile(string path, Stream stream)
		{
			return new MZipEntry(this.zip.AddEntry(path, stream));
		}

		public bool IsFileExist(string path)
		{
			return this.zip.Any((ZipEntry entry) => entry.FileName == path);
		}

		public void Flush()
		{
			this.zip.Save(this.stream);
		}

		public void Close()
		{
			this.zip.Dispose();
		}

		private ZipFile zip;

		private Stream stream;
	}
}