using System.Linq;
using Luticate2.Auth.Business;
using Xunit;

namespace Luticate2.Auth.Tests.Business
{
    public class TestDbo1
    {
        public string MyString { get; set; }

        public TestDbo2 TestDbo2 { get; set; }
    }

    public class TestDbo2
    {
        public string MyOtherString { get; set; }
        
        public int MyInt { get; set; }

        public TestDbo2 RecursiveObject { get; set; }
    }

    public class LuExpressionUtilsTests
    {
        [Fact]
        public void GetSingleMemberFromExpression1()
        {
            var memberInfo = LuExpressionUtils.GetSingleMemberFromExpression<TestDbo1, string>(x => x.MyString);
            Assert.NotNull(memberInfo);
            Assert.Equal("MyString", memberInfo.Name);
        }
        
        [Fact]
        public void GetSingleMemberFromExpression2()
        {
            var memberInfo = LuExpressionUtils.GetSingleMemberFromExpression<TestDbo1, TestDbo2>(x => x.TestDbo2);
            Assert.NotNull(memberInfo);
            Assert.Equal("TestDbo2", memberInfo.Name);
        }
        
        [Fact]
        public void GetSingleMemberFromExpression3()
        {
            var memberInfo = LuExpressionUtils.GetSingleMemberFromExpression<TestDbo1, TestDbo1>(x => x);
            Assert.Null(memberInfo);
        }
        
        [Fact]
        public void GetSingleMemberFromExpression4()
        {
            var memberInfo = LuExpressionUtils.GetSingleMemberFromExpression<TestDbo1, int>(x => 42);
            Assert.Null(memberInfo);
        }
        
        [Fact]
        public void GetSingleMemberFromExpression5()
        {
            var memberInfo = LuExpressionUtils.GetSingleMemberFromExpression<TestDbo1, int>(x => x.TestDbo2.MyInt);
            Assert.Null(memberInfo);
        }
        
        [Fact]
        public void GetSingleMemberFromExpression6()
        {
            var memberInfo = LuExpressionUtils.GetSingleMemberFromExpression<TestDbo1, int>(x => x.TestDbo2.RecursiveObject.MyInt);
            Assert.Null(memberInfo);
        }

        [Fact]
        public void GetMembersFromExpression1()
        {
            var memberInfo = LuExpressionUtils.GetMembersFromExpression<TestDbo1, string>(x => x.MyString);
            Assert.NotNull(memberInfo);
            var memberInfosString = string.Join(".", memberInfo.Select(x => x.Name));
            Assert.Equal("MyString", memberInfosString);
        }

        [Fact]
        public void GetMembersFromExpression2()
        {
            var memberInfo = LuExpressionUtils.GetMembersFromExpression<TestDbo1, TestDbo2>(x => x.TestDbo2);
            Assert.NotNull(memberInfo);
            var memberInfosString = string.Join(".", memberInfo.Select(x => x.Name));
            Assert.Equal("TestDbo2", memberInfosString);
        }

        [Fact]
        public void GetMembersFromExpression3()
        {
            var memberInfo = LuExpressionUtils.GetMembersFromExpression<TestDbo1, TestDbo1>(x => x);
            Assert.Null(memberInfo);
        }

        [Fact]
        public void GetMembersFromExpression4()
        {
            var memberInfo = LuExpressionUtils.GetMembersFromExpression<TestDbo1, int>(x => 42);
            Assert.Null(memberInfo);
        }

        [Fact]
        public void GetMembersFromExpression5()
        {
            var memberInfo = LuExpressionUtils.GetMembersFromExpression<TestDbo1, int>(x => x.TestDbo2.MyInt);
            Assert.NotNull(memberInfo);
            var memberInfosString = string.Join(".", memberInfo.Select(x => x.Name));
            Assert.Equal("TestDbo2.MyInt", memberInfosString);
        }

        [Fact]
        public void GetMembersFromExpression6()
        {
            var memberInfo = LuExpressionUtils.GetMembersFromExpression<TestDbo1, int>(x => x.TestDbo2.RecursiveObject.MyInt);
            Assert.NotNull(memberInfo);
            var memberInfosString = string.Join(".", memberInfo.Select(x => x.Name));
            Assert.Equal("TestDbo2.RecursiveObject.MyInt", memberInfosString);
        }
    }
}