// 
// PackageInstalledCondition.cs
//  
// Author:
//       Lluis Sanchez Gual <lluis@novell.com>
// 
// Copyright (c) 2009 Novell, Inc (http://www.novell.com)
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

using System;
using Mono.Addins;
using MonoDevelop.Core.Assemblies;

namespace MonoDevelop.Core.AddIns
{
	public class PackageInstalledCondition: ConditionType
	{
		public override bool Evaluate (Mono.Addins.NodeElement conditionNode)
		{
			string pname = conditionNode.GetAttribute ("name");
			SystemPackage pkg = Runtime.SystemAssemblyService.CurrentRuntime.RuntimeAssemblyContext.GetPackageInternal (pname);
			if (pkg == null)
				return false;
			string ver = conditionNode.GetAttribute ("version");
			if (ver.Length > 0)
				return ver == pkg.Version;
			ver = conditionNode.GetAttribute ("minVersion");
			if (ver.Length > 0)
				return Addin.CompareVersions (ver, pkg.Version) >= 0;
			ver = conditionNode.GetAttribute ("maxVersion");
			if (ver.Length > 0)
				return Addin.CompareVersions (ver, pkg.Version) <= 0;
			return true;
		}
	}
	
	public class PackageNotInstalledCondition: PackageInstalledCondition
	{
		public override bool Evaluate (Mono.Addins.NodeElement conditionNode)
		{
			return !base.Evaluate (conditionNode);
		}
	}
}
