using AutoMapper;

using Newtonsoft.Json;

using System;

public class Program

{

    public static void Main()

    {

        IMapper mapper = new MapperConfiguration(cfg => cfg.AddProfile<MappingProfile>())

            .CreateMapper();

        mapper.ConfigurationProvider.AssertConfigurationIsValid();

        Console.WriteLine("mapper.ConfigurationProvider.AssertConfigurationIsValid();");

        Console.WriteLine();

        Console.WriteLine("-- Create a domain model --");

        var child = new Child(1, new Parent(2, 100), Attempt.SecondRetry);

        Console.WriteLine(child);

        Console.WriteLine();

        Console.WriteLine("-- Mapping from domain model to dbo --");

        var childDbo = mapper.Map<ChildDbo>(child);

        Console.WriteLine(childDbo);

        Console.WriteLine();

        Console.WriteLine("-- Mapping from dbo back to domain model --");

        var child2 = mapper.Map<Child>(childDbo);

        Console.WriteLine(child2);

    }

    // Domain models

    public class Parent

    {

        public int Id { get; private set; }

        public int TypeId { get; private set; }

        public Parent(int parentId, int typeId)

        {

            // Validations

            this.Id = parentId;

            this.TypeId = typeId;

        }

        public override string ToString()

        {

            return JsonConvert.SerializeObject(this, Formatting.Indented);

        }

    }

    public class Child

    {

        public int Id { get; private set; }

        public Parent Parent { get; private set; }

        public Attempt Attempt { get; private set; }

        public Child(int childId, Parent parent, Attempt retryNumber)

        {

            // Validations

            this.Id = childId;

            this.Parent = parent;

            this.Attempt = retryNumber;

        }

        public override string ToString()

        {

            return JsonConvert.SerializeObject(this, Formatting.Indented);

        }

    }

    public enum Attempt

    {

        Original = 1,

        FirstRetry = 2,

        SecondRetry = 3,

        LastRetry = 4

    }

    // Database objects, aka dbo

    public class ParentDbo

    {

        public int ParentId { get; set; }

        public int TypeId { get; set; }

    }

    public class ChildDbo

    {

        public int ChildId { get; set; }

        public ParentDbo Parent { get; set; }

        public int RetryNumber { get; set; }

        public override string ToString()

        {

            return JsonConvert.SerializeObject(this, Formatting.Indented);

        }

    }

    public class MappingProfile : Profile

    {

        public MappingProfile()

        {

            CreateMap<Child, ChildDbo>()

                .ForMember(dest => dest.ChildId, opts => opts.MapFrom(src => src.Id))

                .ForMember(dest => dest.RetryNumber, opts => opts.MapFrom(src => (int)src.Attempt))

                .ReverseMap()

            //  .ConstructUsing((dbo, ctx) => new Child(dbo.ChildId, ctx.Mapper.Map<Parent>(dbo.Parent), (Attempt)dbo.RetryNumber))

                ;

            CreateMap<Parent, ParentDbo>()

                .ForMember(dest => dest.ParentId, opts => opts.MapFrom(src => src.Id))

                .ReverseMap();

        }

    }

}