AutoMapperExtensions.cs

using System;
using System.Collections.Generic;
using System.Linq;
using AutoMapper;

namespace DovetailCRM.Core.Web.Mapping
{
    public static class AutoMapperExtensions
    {
        public static void CreateMapsForSourceTypes(this IConfiguration configuration, Func<Type, bool> filter, Func<Type, Type> destinationType, Action<IMappingExpression, Type, Type> mappingConfiguration)
        {
            var typesInThisAssembly = typeof(AutoMapperExtensions).Assembly.GetExportedTypes();
            CreateMapsForSourceTypes(configuration, typesInThisAssembly.Where(filter), destinationType, mappingConfiguration);
        }

        public static void CreateMapsForSourceTypes(this IConfiguration configuration, IEnumerable<Type> typeSource, Func<Type, Type> destinationType, Action<IMappingExpression, Type, Type> mappingConfiguration)
        {
            foreach (var type in typeSource)
            {
                var destType = destinationType(type);
                if (destType == null) continue;
                var mappingExpression = configuration.CreateMap(type, destType);
                mappingConfiguration(mappingExpression, type, destType);
            }
        }

        public static IMappingExpression MapViewUrls(this IMappingExpression expression, Type sourceType, Type destinationType)
        {
            if (destinationType.GetProperty(DovetailViewExtensions.URL_SUFFIX) != null)
            {
                expression.ForMember(DovetailViewExtensions.URL_SUFFIX, map => map.ResolveUsing<UrlValueResolver>());
            }
            var entityProperties = destinationType.GetProperties().Where(p => p.PropertyType == typeof(string) && p.Name.EndsWith(DovetailViewExtensions.URL_SUFFIX) && p.Name != DovetailViewExtensions.URL_SUFFIX);
            foreach (var prop in entityProperties)
            {
                var sourcePropertyName = prop.Name.Replace(DovetailViewExtensions.URL_SUFFIX, string.Empty);
                var destPropertyName = prop.Name;
                expression.ForMember(destPropertyName, map => map.ResolveUsing<UrlValueResolver>().FromMember(sourcePropertyName));
            }

            return expression;
        }

        public static IMappingExpression MapDisplayValues(this IMappingExpression expression, Type sourceType, Type destinationType)
        {
            const string DISPLAY_SUFFIX = "Display";
            var entityProperties = destinationType.GetProperties().Where(p => p.PropertyType == typeof(string) && p.Name.EndsWith(DISPLAY_SUFFIX));
            foreach (var prop in entityProperties)
            {
                var sourcePropertyName = prop.Name.Replace(DISPLAY_SUFFIX, string.Empty);
                var destPropertyName = prop.Name;
                expression.ForMember(destPropertyName, map => map.ResolveUsing<ListValueResolver>().FromMember(sourcePropertyName));
            }

            return expression;
        }
   }
}