using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Reflection;
using System.Web.Mvc;
using Web.Mvc.Navigation;

namespace Admin.UnitTests.Controllers.FileImport.FileImport
{
    [TestClass]
    [ExcludeFromCodeCoverage]
    public class Get : TestBase
    {
        public Get()
        {
            SetupController();
        }

        private MethodInfo GetMethod()
        {
            return GetMethod(typeof(HttpGetAttribute), nameof(Controller.Import));
        }

        private ActionResult GetResult()
        {
            return Controller.Import();
        }

        [TestMethod]
        public void HasCorrectNumberOfCustomAttributes()
        {
            Assert.AreEqual(2, GetMethod().CustomAttributes.Count());
        }

        [TestMethod]
        public void HasASingleNavigatablePageActionFilterAttribute()
        {
            Assert.AreEqual(1, GetMethod().CustomAttributes.Where(ca => ca.AttributeType == typeof(NavigatablePageActionFilterAttribute)).Count());
        }

        [TestMethod]
        public void NavigatablePageActionFilterAttributeHasCorrectDisplayText()
        {
            var attribute = GetMethod().CustomAttributes.Single(ca => ca.AttributeType == typeof(NavigatablePageActionFilterAttribute));

            var namedArgument = attribute.NamedArguments.Where(x => x.MemberName == "DisplayText").First();

            Assert.AreEqual("File Import", namedArgument.TypedValue.Value);
        }

        [TestMethod]
        public void HasASingleHttpGetAttribute()
        {
            Assert.AreEqual(1, GetMethod().CustomAttributes.Where(ca => ca.AttributeType == typeof(HttpGetAttribute)).Count());
        }

        [TestMethod]
        public void ReturnsAView()
        {
            var result = GetResult();

            Assert.IsNotNull(result);
            Assert.IsInstanceOfType(result, typeof(ViewResult));
        }

        [TestMethod]
        public void ReturnsCorrectViewName()
        {
            var result = GetResult() as ViewResult;

            Assert.IsNotNull(result);
            Assert.IsTrue(string.IsNullOrEmpty(result.ViewName) || result.ViewName == "Import");
        }
    }
}