// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System.Reflection;
using Microsoft.AspNet.Mvc.ApplicationModels.DefaultControllerModelBuilderTestControllers;
using Xunit;

namespace Microsoft.AspNet.Mvc.ApplicationModels
{
    public class DefaultControllerModelBuilderTest
    {
        [Fact]
        public void IsController_UserDefinedClass()
        {
            // Arrange
            var builder = new AccessibleControllerModelBuilder();
            var typeInfo = typeof(StoreController).GetTypeInfo();

            // Act
            var isController = builder.IsController(typeInfo);

            // Assert
            Assert.True(isController);
        }

        [Fact]
        public void IsController_FrameworkControllerClass()
        {
            // Arrange
            var builder = new AccessibleControllerModelBuilder();
            var typeInfo = typeof(Controller).GetTypeInfo();

            // Act
            var isController = builder.IsController(typeInfo);

            // Assert
            Assert.False(isController);
        }

        [Fact]
        public void IsController_UserDefinedControllerClass()
        {
            // Arrange
            var builder = new AccessibleControllerModelBuilder();
            var typeInfo = typeof(DefaultControllerModelBuilderTestControllers.Controller).GetTypeInfo();

            // Act
            var isController = builder.IsController(typeInfo);

            // Assert
            Assert.False(isController);
        }

        [Fact]
        public void IsController_Interface()
        {
            // Arrange
            var builder = new AccessibleControllerModelBuilder();
            var typeInfo = typeof(IController).GetTypeInfo();

            // Act
            var isController = builder.IsController(typeInfo);

            // Assert
            Assert.False(isController);
        }

        [Fact]
        public void IsController_AbstractClass()
        {
            // Arrange
            var builder = new AccessibleControllerModelBuilder();
            var typeInfo = typeof(AbstractController).GetTypeInfo();

            // Act
            var isController = builder.IsController(typeInfo);

            // Assert
            Assert.False(isController);
        }

        [Fact]
        public void IsController_DerivedAbstractClass()
        {
            // Arrange
            var builder = new AccessibleControllerModelBuilder();
            var typeInfo = typeof(DerivedAbstractController).GetTypeInfo();

            // Act
            var isController = builder.IsController(typeInfo);

            // Assert
            Assert.True(isController);
        }

        [Fact]
        public void IsController_OpenGenericClass()
        {
            // Arrange
            var builder = new AccessibleControllerModelBuilder();
            var typeInfo = typeof(OpenGenericController<>).GetTypeInfo();

            // Act
            var isController = builder.IsController(typeInfo);

            // Assert
            Assert.False(isController);
        }

        [Fact]
        public void IsController_ClosedGenericClass()
        {
            // Arrange
            var builder = new AccessibleControllerModelBuilder();
            var typeInfo = typeof(OpenGenericController<string>).GetTypeInfo();

            // Act
            var isController = builder.IsController(typeInfo);

            // Assert
            Assert.True(isController);
        }

        [Fact]
        public void IsController_DerivedGenericClass()
        {
            // Arrange
            var builder = new AccessibleControllerModelBuilder();
            var typeInfo = typeof(DerivedGenericController).GetTypeInfo();

            // Act
            var isController = builder.IsController(typeInfo);

            // Assert
            Assert.True(isController);
        }

        [Fact]
        public void IsController_Poco_WithNamingConvention()
        {
            // Arrange
            var builder = new AccessibleControllerModelBuilder();
            var typeInfo = typeof(PocoController).GetTypeInfo();

            // Act
            var isController = builder.IsController(typeInfo);

            // Assert
            Assert.True(isController);
        }

        [Fact]
        public void IsController_NoControllerSuffix()
        {
            // Arrange
            var builder = new AccessibleControllerModelBuilder();
            var typeInfo = typeof(NoSuffix).GetTypeInfo();

            // Act
            var isController = builder.IsController(typeInfo);

            // Assert
            Assert.True(isController);
        }

        private class AccessibleControllerModelBuilder : DefaultControllerModelBuilder
        {
            public AccessibleControllerModelBuilder()
                : base(new DefaultActionModelBuilder())
            {
            }

            public new bool IsController([NotNull]TypeInfo typeInfo)
            {
                return base.IsController(typeInfo);
            }
        }
    }
}

// These controllers are used to test the DefaultActionDiscoveryConventions implementation
// which REQUIRES that they be public top-level classes. To avoid having to stub out the
// implementation of this class to test it, they are just top level classes. Don't reuse
// these outside this test - find a better way or use nested classes to keep the tests
// independent.
namespace Microsoft.AspNet.Mvc.ApplicationModels.DefaultControllerModelBuilderTestControllers
{
    public abstract class AbstractController : Mvc.Controller
    {
    }

    public class DerivedAbstractController : AbstractController
    {
    }

    public class StoreController : Mvc.Controller
    {
    }

    public class Controller
    {
    }

    public class OpenGenericController<T> : Mvc.Controller
    {
    }

    public class DerivedGenericController : OpenGenericController<string>
    {
    }

    public interface IController
    {
    }

    public class NoSuffix : Mvc.Controller
    {
    }

    public class PocoController
    {
    }
}