// -----------------------------------------------------------------------

//  <copyright file="IndexCommitPointDirectory.cs" company="Hibernating Rhinos LTD">

//      Copyright (c) Hibernating Rhinos LTD. All rights reserved.

//  </copyright>

// -----------------------------------------------------------------------

using System.Globalization;

using System.IO;

using System.Linq;

using System.Text.RegularExpressions;

using Raven.Database.Extensions;



namespace Raven.Database.Indexing

{

	public class IndexCommitPointDirectory

	{

		private const string DirectoryName = "CommitPoints";

		private const string File = "index.commitPoint";

		private const string KeysToDeleteFile = "to-delete.commitPoint";



		public IndexCommitPointDirectory(string indexStoragePath, string directoryName, string name)

		{

			IndexFullPath = Path.Combine(indexStoragePath, directoryName);

			AllCommitPointsFullPath = GetAllCommitPointsFullPath(IndexFullPath);

			Name = name;

			FullPath = Path.Combine(AllCommitPointsFullPath, Name);

			FileFullPath = Path.Combine(FullPath, File);

			DeletedKeysFile = Path.Combine(FullPath, KeysToDeleteFile);

		}



		public string IndexFullPath { get; private set; }



		public string AllCommitPointsFullPath { get; private set; }



		public string Name { get; private set; }



		public string FullPath { get; private set; }



		public string FileFullPath { get; private set; }



		public string DeletedKeysFile { get; private set; }



		public static string GetAllCommitPointsFullPath(string indexFullPath)

		{

			return Path.Combine(indexFullPath, DirectoryName);

		}



		public static string[] ScanAllCommitPointsDirectory(string indexFullPath)

		{

			return

				Directory.GetDirectories(Path.Combine(indexFullPath, DirectoryName))

				         .Where(x => Regex.IsMatch(Path.GetFileName(x), "^[0-9]{19,19}$"))

				         .ToArray();

		}

	}

}