// 
// ResolveNamespaceTests.cs
//  
// Author:
//       Mike Krüger <mkrueger@xamarin.com>
// 
// Copyright (c) 2012 Xamarin Inc. (http://xamarin.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 NUnit.Framework;
using MonoDevelop.CSharpBinding.Tests;
using System.Collections.Generic;
using MonoDevelop.CSharpBinding;
using MonoDevelop.Ide.Gui;
using Mono.TextEditor;
using ICSharpCode.NRefactory.Semantics;
using ICSharpCode.NRefactory.CSharp;
using MonoDevelop.CSharp;
using MonoDevelop.CSharp.Completion;
using MonoDevelop.Refactoring;
using System.Linq;
using MonoDevelop.Projects;
using MonoDevelop.Ide.TypeSystem;

namespace MonoDevelop.CSharpBinding.Refactoring
{
	[TestFixture]
	public class ResolveNamespaceTests : UnitTests.TestBase
	{
		static Document Setup (string input)
		{
			var tww = new TestWorkbenchWindow ();
			var content = new TestViewContent ();

			var project = Services.ProjectService.CreateDotNetProject ("C#");
			project.Name = "test";
			project.References.Add (new ProjectReference (ReferenceType.Package, "System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"));
			project.References.Add (new ProjectReference (ReferenceType.Package, "System.Core"));

			project.FileName = "test.csproj";

			var wrapper = TypeSystemService.LoadProject (project);
			wrapper.EnsureReferencesAreLoaded ();
			wrapper.ReconnectAssemblyReferences (); 
			content.Project = project;

			tww.ViewContent = content;
			content.ContentName = "a.cs";
			content.GetTextEditorData ().Document.MimeType = "text/x-csharp";
			var doc = new Document (tww);

			var text = input;
			int endPos = text.IndexOf ('$');
			if (endPos >= 0)
				text = text.Substring (0, endPos) + text.Substring (endPos + 1);

			content.Text = text;
			content.CursorPosition = Math.Max (0, endPos);

			var compExt = new CSharpCompletionTextEditorExtension ();
			compExt.Initialize (doc);
			content.Contents.Add (compExt);
			doc.UpdateParseDocument ();
			return doc;
		}

		List<MonoDevelop.Refactoring.ResolveCommandHandler.PossibleNamespace> GetResult (string input)
		{
			var doc = Setup (input);
			var location = doc.Editor.Caret.Location;
			ResolveResult resolveResult;
			AstNode node;
			doc.TryResolveAt (location, out resolveResult, out node);
			return ResolveCommandHandler.GetPossibleNamespaces (doc, node, ref resolveResult);
		}

		[Test]
		public void TestObjectCreationType ()
		{
			var result = GetResult (@"class Test {
	void MyMethod ()
	{
		var list = new $List<string> ();
	}
}");
			Assert.IsTrue (result.Any (t => t.Namespace == "System.Collections.Generic"));
		}

		[Test]
		public void TestLocalVariableType ()
		{
			var result = GetResult (@"class Test {
	void MyMethod ()
	{
		$List<string> list;
	}
}");
			Assert.IsTrue (result.Any (t => t.Namespace == "System.Collections.Generic"));
		}

		[Test]
		public void TestParameterType ()
		{
			var result = GetResult (@"class Test {
	void MyMethod ($List<string> list)
	{
	}
}");
			Assert.IsTrue (result.Any (t => t.Namespace == "System.Collections.Generic"));
		}
		
		[Test]
		public void TestFieldType ()
		{
			var result = GetResult (@"class Test {
	$List<string> list;
}");
			Assert.IsTrue (result.Any (t => t.Namespace == "System.Collections.Generic"));
		}
		
		
		[Test]
		public void TestBaseType ()
		{
			var result = GetResult (@"class Test : $List<string> {}");
			Assert.IsTrue (result.Any (t => t.Namespace == "System.Collections.Generic"));
		}
		

		[Test]
		public void TestLocalVariableValid ()
		{
			var result = GetResult (@"using System.Collections.Generic;
class Test {
	void MyMethod ()
	{
		$List<string> list;
	}
}");
			Assert.AreEqual (0, result.Count);
		}

		[Test]
		public void TestAttributeCase1 ()
		{
			var result = GetResult (@"
[$Obsolete]
class Test {
}");
			Assert.IsTrue (result.Any (t => t.Namespace == "System"));
		}
		
		[Test]
		public void TestAttributeCase2 ()
		{

			var result = GetResult (@"
[$SerializableAttribute]
class Test {
}");
			Assert.IsTrue (result.Any (t => t.Namespace == "System"));
		}

		[Test]
		public void TestAmbigiousResolveResult ()
		{

			var result = GetResult (@"namespace Foo { class Bar {} }
namespace Foo2 { class Bar {} }

namespace My
{
	using Foo;
	using Foo2;

	class Program
	{
		public static void Main ()
		{
			$Bar bar;
		}
	}
}");
			foreach (var a in result)
				Console.WriteLine (a);
			Assert.IsTrue (result.Any (t => t.Namespace == "Foo"));
			Assert.IsTrue (result.Any (t => t.Namespace == "Foo2"));
		}

		[Test]
		public void TestExtensionMethod ()
		{
			var result = GetResult (@"class Program
{
	public static void Main (string[] args)
	{
		args.$First ();
	}
}");
			foreach (var a in result)
				Console.WriteLine (a);
			Assert.IsTrue (result.Any (t => t.Namespace == "System.Linq"));
		}


		#region Bug 3453 - [New Resolver] "Resolve" doesn't show up from time
		[Test]
		public void TestBug3453Case1 ()
		{
			var result = GetResult (@"class Test {
	string GetName ()
	{
		var encoding = $Encoding
		return encoding.EncodingName;
	}
}");
			Assert.IsTrue (result.Any (t => t.Namespace == "System.Text"));
		}

		[Test]
		public void TestBug3453Case2 ()
		{
			var result = GetResult (@"class Test {
	string GetName ()
	{
		$Encoding
		return encoding.EncodingName;
	}
}");
			Assert.IsTrue (result.Any (t => t.Namespace == "System.Text"));
		}

		[Test]
		public void TestBug3453Case3 ()
		{
			var result = GetResult (@"class Test {
	string GetName ()
	{
		$Encoding.
	}
}");
			Assert.IsTrue (result.Any (t => t.Namespace == "System.Text"));
		}

		[Test]
		public void TestBug3453Case3WithGeneris ()
		{
			var result = GetResult (@"class Test {
	string GetName ()
	{
		$List<string>.
	}
}");
			Assert.IsTrue (result.Any (t => t.Namespace == "System.Collections.Generic"));
		}
		#endregion

		/// <summary>
		/// Bug 4361 - Cannot 'resolve' an unknown type
		/// </summary>
		[Test]
		public void TestBug4361 ()
		{
			var result = GetResult (@"using System;

namespace sadfhgjhkfj
{
    class MainClass
    {
        public static void Main (string[] args)
        {
            while (true) {
                var t = new Thre$ad
            }
        }
    }
}");
			foreach (var a in result)
				Console.WriteLine (a);
			Assert.IsTrue (result.Any (t => t.Namespace == "System.Threading"));
		}

		[Test]
		public void TestBug4361Case2 ()
		{
			var result = GetResult (@"using System;

namespace sadfhgjhkfj
{
    class MainClass
    {
        public static void Main (string[] args)
        {
            while (true) {
                var t = new Thre$ad[0];
            }
        }
    }
}");
			Assert.IsTrue (result.Any (t => t.Namespace == "System.Threading"));
		}

		/// <summary>
		/// Bug 4493 - 'Resolve' context action offers incorrect options
		/// </summary>
		[Test]
		public void TestBug4493 ()
		{
			var result = GetResult (@"using System;

namespace sadfhgjhkfj
{
    class MainClass
    {
        public static void Main (string[] args)
        {
            S$tack<int> a;
        }
    }
}"
			);

			Assert.IsFalse (result.Any (t => t.Namespace == "System.Collections"));
			Assert.IsTrue (result.Any (t => t.Namespace == "System.Collections.Generic"));
		}


		/// <summary>
		/// Bug 5206 - Resolve -> Add Using statement does not work after "|" 
		/// </summary>
		[Test]
		public void TestBug5206 ()
		{
			var result = GetResult (@"using System;

namespace TestConsole
{
	class MainClass
	{
		public static void Main (string[] args)
		{
			var f = typeof (int).GetFields (System.Reflection.BindingFlags.Static | Binding$Flags
		}
 	}
}"
			);

			Assert.IsTrue (result.Any (t => t.Namespace == "System.Reflection"));
		}

		/// <summary>
		/// Bug 4749 - Resolve is incorrect for inner classes
		/// </summary>
		[Test]
		public void TestBug4749 ()
		{

			var result = GetResult (@"namespace Test { public class Foo { public class Bar {} } }

class Program
{
	public static void Main ()
	{
		$Bar bar;
	}
}
");
			foreach (var a in result)
				Console.WriteLine (a);
			Assert.IsTrue (result.Any (t => t.Namespace == "Test.Foo" && !t.IsAccessibleWithGlobalUsing));
		}


		/// <summary>
		/// Bug 10059 - Resolve type fails for nested static types
		/// </summary>
		[Test]
		public void TestBug10059 ()
		{
			var result = GetResult (@"namespace ConsoleTest
{
    class MainClass
    {
        $Environment.SpecialFolder F { get; }
    }
}
"
			                        );
			
			Assert.IsTrue (result.Any (t => t.Namespace == "System"));
		}


	}
}