/Raven.Database/Server/RavenFS/Synchronization/Conflictuality/ConflictDetector.cs

using System.Collections.Generic;

using System.Collections.Specialized;

using Raven.Client.RavenFS;

using Raven.Database.Server.RavenFS.Infrastructure;

using Raven.Json.Linq;



namespace Raven.Database.Server.RavenFS.Synchronization.Conflictuality

{

	public class ConflictDetector

	{

        public ConflictItem Check(string fileName, RavenJObject localMetadata, RavenJObject remoteMetadata, string remoteServerUrl)

		{

			if (Historian.IsDirectChildOfCurrent(localMetadata, remoteMetadata))

				return null;



			return

				new ConflictItem

				{

					CurrentHistory = TransformToFullConflictHistory(localMetadata),

					RemoteHistory = TransformToFullConflictHistory(remoteMetadata),

					FileName = fileName,

					RemoteServerUrl = remoteServerUrl

				};

		}



        public ConflictItem CheckOnSource(string fileName, RavenJObject localMetadata, RavenJObject remoteMetadata, string localServerUrl)

		{

			return Check(fileName, remoteMetadata, localMetadata, localServerUrl);

		}



		private static List<HistoryItem> TransformToFullConflictHistory(RavenJObject metadata)

		{

            var version = metadata.Value<long>(SynchronizationConstants.RavenSynchronizationVersion);

			var serverId = metadata.Value<string>(SynchronizationConstants.RavenSynchronizationSource);

			var fullHistory = Historian.DeserializeHistory(metadata);

			fullHistory.Add(new HistoryItem { ServerId = serverId, Version = version });



			return fullHistory;

		}

	}

}