// 
// CreateProperty.cs
//  
// Author:
//       Mike Krüger <mkrueger@novell.com>
// 
// Copyright (c) 2011 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 ICSharpCode.NRefactory.PatternMatching;
using System.Linq;

namespace ICSharpCode.NRefactory.CSharp.Refactoring
{
	public class CreateProperty : IContextAction
	{
		public bool IsValid (RefactoringContext context)
		{
			var identifier = CreateField.GetIdentifier (context);
			if (identifier == null)
				return false;
			return context.Resolve (identifier) == null && CreateField.GuessType (context, identifier) != null;
		}
		
		public void Run (RefactoringContext context)
		{
			var identifier = GetIdentifier (context);
			using (var script = context.StartScript ()) {
				script.InsertWithCursor ("Create property", GeneratePropertyDeclaration (context, identifier), Script.InsertPosition.Before);
			}
		}
		
		AstNode GeneratePropertyDeclaration (RefactoringContext context, IdentifierExpression identifier)
		{
			return new PropertyDeclaration () {
				ReturnType = CreateField.GuessType (context, identifier),
				Name = identifier.Identifier,
				Getter = new Accessor (),
				Setter = new Accessor ()
			};
		}
		
		IdentifierExpression GetIdentifier (RefactoringContext context)
		{
			return context.GetNode<IdentifierExpression> ();
		}
	}
}