var email = "email@example.com";
var isValid = ValidateEmail(email, out string message);
if (isValid)
{
    //do something
}

        public OperationResult ValidateEmail(string email)
        {
            var result = new OperationResult();

            if (string.IsNullOrWhiteSpace(email))
            {
                result.Success = false;
                result.AddMessage("email is null.");
            }

            if (result.Success)
            {
                var isValidFormat = true;//todo: using RegularExpression
                if (!isValidFormat)
                {
                    result.Success = false;
                    result.AddMessage("email is not in a correct format");
                }
            }

            if (result.Success)
            {
                var isRealDoamin = true;//todo: Code here that confirms whether domain exists.
                if (!isRealDoamin)
                {
                    result.Success = false;
                    result.AddMessage("email does not include a valid domain.");
                }
            }

            return result;
        }

این بار خروجی متد مذکور از نوع OperationResult ای می‌باشد که هم موفقیت آمیز بودن یا عدم آن را مشخص می‌کند و همچنین امکان دسترسی به لیست پیغام‌های مرتبط با اعتبارسنجی‌های انجام شده، وجود دارد.

    [Serializable]
    public class MvcAjaxResponse : MvcAjaxResponse<object>
    {
        public MvcAjaxResponse()
        {
        }

        public MvcAjaxResponse(bool success)
            : base(success)
        {
        }

        public MvcAjaxResponse(object result)
            : base(result)
        {
        }

        public MvcAjaxResponse(ErrorInfo error, bool unAuthorizedRequest = false)
            : base(error, unAuthorizedRequest)
        {
        }
    }
   

    [Serializable]
    public class MvcAjaxResponse<TResult> : MvcAjaxResponseBase
    {
        public MvcAjaxResponse(TResult result)
        {
            Result = result;
            Success = true;
        }

        public MvcAjaxResponse()
        {
            Success = true;
        }

        public MvcAjaxResponse(bool success)
        {
            Success = success;
        }

        public MvcAjaxResponse(ErrorInfo error, bool unAuthorizedRequest = false)
        {
            Error = error;
            UnAuthorizedRequest = unAuthorizedRequest;
            Success = false;
        }

        /// <summary>
        ///     The actual result object of AJAX request.
        ///     It is set if <see cref="MvcAjaxResponseBase.Success" /> is true.
        /// </summary>
        public TResult Result { get; set; }
    }

    public class MvcAjaxResponseBase
    {
        public string TargetUrl { get; set; }

        public bool Success { get; set; }

        public ErrorInfo Error { get; set; }

        public bool UnAuthorizedRequest { get; set; }

        public bool __mvc { get; } = true;
    }

    [Serializable]
    public class EntityNotFoundException : Exception
    {
        public Type EntityType { get; set; }
        public object Id { get; set; }
        public EntityNotFoundException()
        {
        }

        public EntityNotFoundException(string message)
            : base(message)
        {

        }

        public EntityNotFoundException(string message, Exception innerException)
            : base(message, innerException)
        {
        }

        public EntityNotFoundException(SerializationInfo serializationInfo, StreamingContext context)
            : base(serializationInfo, context)
        {

        }
        public EntityNotFoundException(Type entityType, object id)
            : this(entityType, id, null)
        {

        }
        public EntityNotFoundException(Type entityType, object id, Exception innerException)
            : base($"There is no such an entity. Entity type: {entityType.FullName}, id: {id}", innerException)
        {
            EntityType = entityType;
            Id = id;
        }

    }

        public async Task<UserOrganizationalUnitInfo> GetCurrentOrganizationalUnitInfoOrNullAsync(long userId)
        {
            return (await _setting.GetSettingValueForUserAsync(
                    UserSettingNames.CurrentOrganizationalUnitInfo, userId).ConfigureAwait(false))
                .FromJsonString<UserOrganizationalUnitInfo>();
        }

namespace MvcFramework.Framework.Dependency
{
    public class LifeCyclePolicy : IInstancePolicy
    {
        public void Apply(Type pluginType, Instance instance)
        {
            if (typeof(ISingletonDependency).IsAssignableFrom(instance.ReturnedType))
                instance.SetLifecycleTo<SingletonLifecycle>();
            else if (typeof(ITransientDependency).IsAssignableFrom(instance.ReturnedType))
                instance.SetLifecycleTo<TransientLifecycle>();
        }
    }
}

namespace MvcFramework.Framework.Application.Services
{
    public abstract class ApplicationService : IApplicationService
    {
    }
}

namespace MvcFramework.Framework.Application.Services
{
    public interface ICrudApplicationService<TModel, TCreateModel, TEditModel, TDeleteModel> :
        ICrudApplicationService<TModel, TCreateModel, TEditModel, TDeleteModel, PagedListRequest,
            PagedListResponse<TModel, PagedListRequest>, DynamicListRequest>
        where TEditModel : class, IEditModel
        where TModel : class, IModel
        where TDeleteModel : class, IDeleteModel
    {
    }

    public interface ICrudApplicationService<TModel, TCreateModel, TEditModel, TDeleteModel, in TDynamicListRequest> :
        ICrudApplicationService<TModel, TCreateModel, TEditModel, TDeleteModel, PagedListRequest,
            PagedListResponse<TModel, PagedListRequest>, TDynamicListRequest>
        where TEditModel : class, IEditModel
        where TModel : class, IModel
        where TDeleteModel : class, IDeleteModel
        where TDynamicListRequest : DynamicListRequest
    {
    }

    public interface ICrudApplicationService<TModel, TCreateModel, TEditModel, TDeleteModel, in TPagedListRequest,
        TPagedListResponse> :
        ICrudApplicationService<TModel, TCreateModel, TEditModel, TDeleteModel, TPagedListRequest, TPagedListResponse,
            DynamicListRequest>
        where TEditModel : class, IEditModel
        where TModel : class, IModel
        where TDeleteModel : class, IDeleteModel
        where TPagedListRequest : PagedListRequest, new()
        where TPagedListResponse : PagedListResponse<TModel, TPagedListRequest>
    {
    }

    public interface ICrudApplicationService<TModel, TCreateModel, TEditModel, TDeleteModel, in TPagedListRequest,
        TPagedListResponse,
        in TDynamicListRequest> : IApplicationService
        where TEditModel : class, IEditModel
        where TModel : class, IModel
        where TDeleteModel : class, IDeleteModel
        where TPagedListRequest : PagedListRequest, new()
        where TPagedListResponse : PagedListResponse<TModel, TPagedListRequest>
        where TDynamicListRequest : DynamicListRequest
    {
        void Create(TCreateModel model);
        void Create(IList<TCreateModel> models);
        Task CreateAsync(TCreateModel model);
        Task CreateAsync(IList<TCreateModel> models);

        IList<TModel> GetList();
        DynamicListResponse GetDynamicList(TDynamicListRequest request);
        TPagedListResponse GetPagedList(TPagedListRequest request);
        IList<LookupItem> GetLookup();
        TModel GetById(long id);
        TEditModel GetForEdit(long id);
        bool Exists(long id);
        Task<IList<TModel>> GetListAsync();
        Task<DynamicListResponse> GetDynamicListAsync(TDynamicListRequest request);
        Task<TPagedListResponse> GetPagedListAsync(TPagedListRequest request);
        Task<IList<LookupItem>> GetLookupAsync();
        Task<TModel> GetByIdAsync(long id);
        Task<TEditModel> GetForEditAsync(long id);
        Task<bool> ExistsAsync(long id);

        void Edit(TEditModel model);
        void Edit(IList<TEditModel> models);
        Task EditAsync(TEditModel model);
        Task EditAsync(IList<TEditModel> models);
        
        void Delete(TDeleteModel model);
        void Delete(IList<TDeleteModel> models);
        Task DeleteAsync(TDeleteModel model);
        Task DeleteAsync(IList<TDeleteModel> models);
    }
}

namespace MvcFramework.Framework.Application.Models
{
    public interface IModel
    {
        long Id { get; set; }
    }
}

namespace MvcFramework.Framework.Application.Models
{
    public interface IEditModel : IModel
    {
        byte[] RowVersion { get; set; }
    }
}

namespace MvcFramework.Framework.Application.Models
{
    public interface IDeleteModel : IModel
    {
        byte[] RowVersion { get; set; }
    }
}

namespace MvcFramework.Framework.Application.Models
{
    public class LookupItem
    {
        public string Value { get; set; }
        public string Text { get; set; }
        public bool Selected { get; set; }
    }
}

namespace MvcFramework.Framework.Application.Models
{
    public class PagedListRequest : IShouldNormalize
    {
        public long TotalCount { get; set; }
        public int PageNumber { get; set; }
        public int PageSize { get; set; }

        /// <summary>
        ///     Sorting information.
        ///     Should include sorting field and optionally a direction (ASC or DESC)
        ///     Can contain more than one field separated by comma (,).
        /// </summary>
        /// <example>
        ///     Examples:
        ///     "Name"
        ///     "Name DESC"
        ///     "Name ASC, Age DESC"
        /// </example>
        public string SortBy { get; set; }

        public void Normalize()
        {
            if (PageNumber < 1)
                PageNumber = 1;

            if (PageSize < 0)
                PageSize = 10;

            if (SortBy.IsEmpty())
                SortBy = "Id DESC";
        }
    }
}

namespace MvcFramework.Framework.Application.Models
{
    public class PagedListResponse<TModel, TPagedListRequest>
        where TPagedListRequest : PagedListRequest, new()
        where TModel : IModel
    {
        public PagedListResponse()
        {
            Result = new List<TModel>();
            Request = new TPagedListRequest();
        }
        public IList<TModel> Result { get; set; }
        public TPagedListRequest Request { get; set; }
    }
}

namespace MvcFramework.Framework.Domain.Entities
{
    public abstract class Entity
    {
        #region Properties

        public long Id { get; set; }
        public byte[] RowVersion { get; set; }
        public EntityChangeState State { get; set; }

        #endregion

        #region Public Methods

        [SuppressMessage("ReSharper", "BaseObjectGetHashCodeCallInGetHashCode")]
        [SuppressMessage("ReSharper", "NonReadonlyMemberInGetHashCode")]
        public override int GetHashCode()
        {
            if (IsTransient())
                return base.GetHashCode();

            unchecked
            {
                var hash = this.GetRealType().GetHashCode();
                return (hash * 31) ^ Id.GetHashCode();
            }
        }

        public virtual bool IsTransient()
        {
            return Id == 0;
        }

        public override bool Equals(object obj)
        {
            var other = obj as Entity;
            if (ReferenceEquals(other, null)) return false;

            if (ReferenceEquals(this, other)) return true;

            var typeOfThis = this.GetRealType();
            var typeOfOther = other.GetRealType();

            if (typeOfThis != typeOfOther) return false;

            if (IsTransient() || other.IsTransient()) return false;

            return Id.Equals(other.Id);
        }

        public override string ToString()
        {
            return $"[{this.GetRealType().Name} : {Id}]";
        }

        #endregion

        #region Operators

        public static bool operator ==(Entity left, Entity right)
        {
            return Equals(left, right);
        }

        public static bool operator !=(Entity left, Entity right)
        {
            return !(left == right);
        }

        #endregion
    }
}

namespace MvcFramework.Framework.Application.Services
{
    public abstract class CrudApplicationService<TEntity, TModel, TCreateModel, TEditModel, TDeleteModel> :
        CrudApplicationService<TEntity, TModel, TCreateModel, TEditModel, TDeleteModel, PagedListRequest,
            PagedListResponse<TModel, PagedListRequest>, DynamicListRequest>
        where TEntity : Entity
        where TCreateModel : class
        where TEditModel : class, IEditModel
        where TModel : class, IModel
        where TDeleteModel : class, IDeleteModel
    {
        protected CrudApplicationService(IUnitOfWork unitOfWork, IMapper mapper) : base(unitOfWork, mapper)
        {
        }
    }

    public abstract class CrudApplicationService<TEntity, TModel, TCreateModel, TEditModel, TDeleteModel,
        TDynamicListRequest> :
        CrudApplicationService<TEntity, TModel, TCreateModel, TEditModel, TDeleteModel, PagedListRequest,
            PagedListResponse<TModel, PagedListRequest>, TDynamicListRequest>
        where TEntity : Entity
        where TCreateModel : class
        where TEditModel : class, IEditModel
        where TModel : class, IModel
        where TDeleteModel : class, IDeleteModel
        where TDynamicListRequest : DynamicListRequest
    {
        protected CrudApplicationService(IUnitOfWork unitOfWork, IMapper mapper) : base(unitOfWork, mapper)
        {
        }
    }

    public abstract class CrudApplicationService<TEntity, TModel, TCreateModel, TEditModel, TDeleteModel,
        TPagedListRequest,
        TPagedListResponse> :
        CrudApplicationService<TEntity, TModel, TCreateModel, TEditModel, TDeleteModel, TPagedListRequest,
            TPagedListResponse,
            DynamicListRequest>
        where TEntity : Entity
        where TCreateModel : class
        where TEditModel : class, IEditModel
        where TModel : class, IModel
        where TDeleteModel : class, IDeleteModel
        where TPagedListRequest : PagedListRequest, new()
        where TPagedListResponse : PagedListResponse<TModel, TPagedListRequest>, new()
    {
        protected CrudApplicationService(IUnitOfWork unitOfWork, IMapper mapper) : base(unitOfWork, mapper)
        {
        }
    }

    public abstract class CrudApplicationService<TEntity, TModel, TCreateModel, TEditModel, TDeleteModel,
        TPagedListRequest,
        TPagedListResponse, TDynamicListRequest> : ApplicationService,
        ICrudApplicationService<TModel, TCreateModel, TEditModel, TDeleteModel, TPagedListRequest, TPagedListResponse,
            TDynamicListRequest>
        where TEntity : Entity
        where TCreateModel : class
        where TEditModel : class, IEditModel
        where TModel : class, IModel
        where TDeleteModel : class, IDeleteModel
        where TPagedListRequest : PagedListRequest, new()
        where TPagedListResponse : PagedListResponse<TModel, TPagedListRequest>, new()
        where TDynamicListRequest : DynamicListRequest

    {
        #region Constructor

        protected CrudApplicationService(IUnitOfWork unitOfWork, IMapper mapper)
        {
            Guard.ArgumentNotNull(unitOfWork, nameof(unitOfWork));
            Guard.ArgumentNotNull(mapper, nameof(mapper));

            UnitOfWork = unitOfWork;
            Mapper = mapper;
            EntitySet = UnitOfWork.Set<TEntity>();
        }

        #endregion

        #region Properties

        protected IQueryable<TEntity> UnTrackedEntitySet => EntitySet.AsNoTracking();
        protected IUnitOfWork UnitOfWork { get; }
        protected IMapper Mapper { get; }
        protected IDbSet<TEntity> EntitySet { get; }

        #endregion

        #region ICrudApplicationService Members

        #region Methods

        [Transactional]
        public virtual void Create(TCreateModel model)
        {
            Guard.ArgumentNotNull(model, nameof(model));

            var entity = Mapper.Map<TEntity>(model);

            EntitySet.Add(entity);
            UnitOfWork.SaveChanges();
        }

        [Transactional]
        public virtual void Create(IList<TCreateModel> models)
        {
            Guard.ArgumentNotEmpty(models, nameof(models));

            var entities = Mapper.Map<IList<TEntity>>(models);

            UnitOfWork.AddRange(entities);
            UnitOfWork.SaveChanges();
        }

        [Transactional]
        public virtual Task CreateAsync(TCreateModel model)
        {
            Guard.ArgumentNotNull(model, nameof(model));

            var entity = Mapper.Map<TEntity>(model);

            EntitySet.Add(entity);
            return UnitOfWork.SaveChangesAsync();
        }

        [Transactional]
        public virtual Task CreateAsync(IList<TCreateModel> models)
        {
            Guard.ArgumentNotEmpty(models, nameof(models));

            var entities = Mapper.Map<IList<TEntity>>(models);

            UnitOfWork.AddRange(entities);
            return UnitOfWork.SaveChangesAsync();
        }


        [Transactional]
        public virtual void Edit(TEditModel model)
        {
            Guard.ArgumentNotNull(model, nameof(model));

            var entity = Mapper.Map<TEntity>(model);

            UnitOfWork.MarkAsChanged(entity);
            UnitOfWork.SaveChanges();
        }

        [Transactional]
        public virtual void Edit(IList<TEditModel> models)
        {
            Guard.ArgumentNotNull(models, nameof(models));
            Guard.ArgumentNotEmpty(models, nameof(models));

            var entities = Mapper.Map<IList<TEntity>>(models);

            UnitOfWork.UpdateRange(entities);
            UnitOfWork.SaveChanges();
        }

        [Transactional]
        public virtual Task EditAsync(TEditModel model)
        {
            Guard.ArgumentNotNull(model, nameof(model));

            var entity = Mapper.Map<TEntity>(model);

            UnitOfWork.MarkAsChanged(entity);
            return UnitOfWork.SaveChangesAsync();
        }

        [Transactional]
        public virtual Task EditAsync(IList<TEditModel> models)
        {
            Guard.ArgumentNotNull(models, nameof(models));
            Guard.ArgumentNotEmpty(models, nameof(models));

            var entities = Mapper.Map<IList<TEntity>>(models);

            UnitOfWork.UpdateRange(entities);
            return UnitOfWork.SaveChangesAsync();
        }


        public virtual IList<TModel> GetList()
        {
            return EntitySet.ProjectToList<TModel>(Mapper.ConfigurationProvider);
        }

        public virtual DynamicListResponse GetDynamicList(TDynamicListRequest request)
        {
            Guard.ArgumentNotNull(request, nameof(request));

            var query = ApplyFiltering(request);

            return query.ProjectTo<TModel>().ToListResponse(request);
        }

        public virtual TPagedListResponse GetPagedList(TPagedListRequest request)
        {
            Guard.ArgumentNotNull(request, nameof(request));

            var query = ApplyFiltering(request);

            request.TotalCount = query.LongCount();

            query = ApplySorting(query, request);
            query = ApplyPaging(query, request);

            var result = query.ProjectToList<TModel>(Mapper.ConfigurationProvider);

            return new TPagedListResponse
            {
                Result = result,
                Request = request
            };
        }

        public virtual IList<LookupItem> GetLookup()
        {
            return EntitySet.ProjectToList<LookupItem>(Mapper.ConfigurationProvider);
        }

        public virtual TModel GetById(long id)
        {
            Guard.ArgumentInRange(id, 1, long.MaxValue, nameof(id));

            var entity =
                EntitySet.Where(a => a.Id == id).ProjectToFirstOrDefault<TModel>(Mapper.ConfigurationProvider);

            if (entity == null)
                throw new EntityNotFoundException($"Couldn't Find Entity {id} When GetById");

            return entity;
        }

        public virtual TEditModel GetForEdit(long id)
        {
            Guard.ArgumentInRange(id, 1, long.MaxValue, nameof(id));

            var entity =
                EntitySet.Where(a => a.Id == id).ProjectToFirstOrDefault<TEditModel>(Mapper.ConfigurationProvider);

            if (entity == null)
                throw new EntityNotFoundException($"Couldn't Find Entity {id} When GetForEdit");

            return entity;
        }

        public virtual bool Exists(long id)
        {
            Guard.ArgumentInRange(id, 1, long.MaxValue, nameof(id));

            return EntitySet.Any(a => a.Id == id);
        }

        public virtual async Task<IList<TModel>> GetListAsync()
        {
            return await EntitySet.ProjectToListAsync<TModel>(Mapper.ConfigurationProvider);
        }

        public virtual Task<DynamicListResponse> GetDynamicListAsync(TDynamicListRequest request)
        {
            Guard.ArgumentNotNull(request, nameof(request));

            var query = ApplyFiltering(request);

            return query.ProjectTo<TModel>().ToListResponseAsync(request);
        }

        public virtual async Task<TPagedListResponse> GetPagedListAsync(TPagedListRequest request)
        {
            Guard.ArgumentNotNull(request, nameof(request));

            var query = ApplyFiltering(request);

            request.TotalCount = await query.LongCountAsync().ConfigureAwait(false);

            query = ApplySorting(query, request);
            query = ApplyPaging(query, request);

            var result = await query.ProjectToListAsync<TModel>(Mapper.ConfigurationProvider).ConfigureAwait(false);

            return new TPagedListResponse
            {
                Result = result,
                Request = request
            };
        }

        public virtual async Task<IList<LookupItem>> GetLookupAsync()
        {
            return await EntitySet.ProjectToListAsync<LookupItem>(Mapper.ConfigurationProvider);
        }

        public virtual async Task<TModel> GetByIdAsync(long id)
        {
            Guard.ArgumentInRange(id, 1, long.MaxValue, nameof(id));

            var entity = await UnTrackedEntitySet.Where(a => a.Id == id)
                .ProjectToFirstOrDefaultAsync<TModel>(Mapper.ConfigurationProvider);

            if (entity == null)
                throw new EntityNotFoundException($"Couldn't Find Entity {id} When GetByIdAsync");

            return entity;
        }

        public virtual async Task<TEditModel> GetForEditAsync(long id)
        {
            Guard.ArgumentInRange(id, 1, long.MaxValue, nameof(id));

            var entity = await UnTrackedEntitySet.Where(a => a.Id == id)
                .ProjectToFirstOrDefaultAsync<TEditModel>(Mapper.ConfigurationProvider);

            if (entity == null)
                throw new EntityNotFoundException($"Couldn't Find Entity {id} When GetForEditAsync");

            return entity;
        }

        public virtual Task<bool> ExistsAsync(long id)
        {
            Guard.ArgumentInRange(id, 1, long.MaxValue, nameof(id));

            return EntitySet.AnyAsync(a => a.Id == id);
        }


        [Transactional]
        public virtual void Delete(TDeleteModel model)
        {
            Guard.ArgumentNotNull(model, nameof(model));

            var entity = Mapper.Map<TEntity>(model);

            UnitOfWork.MarkAsDeleted(entity);
            UnitOfWork.SaveChanges();
        }

        [Transactional]
        public virtual void Delete(IList<TDeleteModel> models)
        {
            Guard.ArgumentNotEmpty(models, nameof(models));
            Guard.ArgumentNotEmpty(models, nameof(models));

            var entities = Mapper.Map<IList<TEntity>>(models);

            UnitOfWork.RemoveRange(entities);
            UnitOfWork.SaveChanges();
        }

        [Transactional]
        public virtual Task DeleteAsync(TDeleteModel model)
        {
            Guard.ArgumentNotNull(model, nameof(model));

            var entity = Mapper.Map<TEntity>(model);

            UnitOfWork.MarkAsDeleted(entity);
            return UnitOfWork.SaveChangesAsync();
        }

        [Transactional]
        public virtual Task DeleteAsync(IList<TDeleteModel> models)
        {
            Guard.ArgumentNotEmpty(models, nameof(models));
            Guard.ArgumentNotEmpty(models, nameof(models));

            var entities = Mapper.Map<IList<TEntity>>(models);

            UnitOfWork.RemoveRange(entities);
            return UnitOfWork.SaveChangesAsync();
        }

        #endregion

        #endregion

        #region Protected Methods

        /// <summary>
        ///     Apply Filtering To GetDynamicList
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        protected virtual IQueryable<TEntity> ApplyFiltering(TDynamicListRequest request)
        {
            Guard.ArgumentNotNull(request, nameof(request));

            return UnTrackedEntitySet;
        }

        /// <summary>
        ///     Apply Filtering To GetPagedList and GetPagedListAsync
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        protected virtual IQueryable<TEntity> ApplyFiltering(TPagedListRequest request)
        {
            Guard.ArgumentNotNull(request, nameof(request));

            return UnTrackedEntitySet;
        }

        /// <summary>
        ///     Apply Sorting To GetPagedList and GetPagedListAsync
        /// </summary>
        /// <param name="query">query</param>
        /// <param name="request">PagedListRequest</param>
        /// <returns></returns>
        protected virtual IQueryable<TEntity> ApplySorting(IQueryable<TEntity> query, TPagedListRequest request)
        {
            Guard.ArgumentNotNull(request, nameof(request));
            Guard.ArgumentNotNull(query, nameof(query));

            return !request.SortBy.IsEmpty() ? query.OrderBy(request.SortBy) : query.OrderByDescending(e => e.Id);
        }

        /// <summary>
        ///     Apply Paging To GetPagedList and GetPagedListAsync
        /// </summary>
        /// <param name="request">PagedListRequest</param>
        /// <param name="query">query</param>
        /// <returns></returns>
        protected virtual IQueryable<TEntity> ApplyPaging(IQueryable<TEntity> query, TPagedListRequest request)
        {
            Guard.ArgumentNotNull(request, nameof(request));
            Guard.ArgumentNotNull(query, nameof(query));

            return request != null
                ? query.Page((request.PageNumber - 1) * request.PageSize, request.PageSize)
                : query;
        }

        #endregion
    }
}

namespace MvcFramework.Framework.Aspects.Validation
{
    public class ValidatorInterceptor : ISyncInterceptionBehavior
    {
        private readonly IValidatorFactory _validatorFactory;

        public ValidatorInterceptor(IValidatorFactory validatorFactory)
        {
            _validatorFactory = validatorFactory;
        }

        public IMethodInvocationResult Intercept(ISyncMethodInvocation methodInvocation)
        {
            var argumentValues = methodInvocation.Arguments.Select(a => a.Value).ToArray();

            var validator = new MethodInvocationValidator(_validatorFactory, methodInvocation.MethodInfo,
                argumentValues);

            validator.Validate();

            return methodInvocation.InvokeNext();
        }
    }
}

namespace MvcFramework.Framework.Aspects.Validation
{
    internal class MethodInvocationValidator
    {
        #region Constructor

        public MethodInvocationValidator(IValidatorFactory validatorFactory, MethodInfo method,
            object[] parameterValues)
        {
            Guard.ArgumentNotNull(method, nameof(method));
            Guard.ArgumentNotNull(parameterValues, nameof(parameterValues));
            Guard.ArgumentNotNull(validatorFactory, nameof(validatorFactory));

            _method = method;
            _parameterValues = parameterValues;
            _validatorFactory = validatorFactory;
            _parameters = method.GetParameters();

            _parametersToBeNormalized = new List<IShouldNormalize>();
        }

        #endregion

        #region Public Methods

        public void Validate()
        {
            if (!CheckShouldBeValidate()) return;

            foreach (var parameterValue in _parameterValues)
                ValidateMethodParameter(parameterValue);

            foreach (var parameterToBeNormalized in _parametersToBeNormalized)
                parameterToBeNormalized.Normalize();
        }

        #endregion

        #region Fields

        private readonly MethodInfo _method;
        private readonly object[] _parameterValues;
        private readonly ParameterInfo[] _parameters;
        private readonly IValidatorFactory _validatorFactory;
        private readonly List<IShouldNormalize> _parametersToBeNormalized;

        #endregion

        #region Private Methods

        private bool CheckShouldBeValidate()
        {
            if (!_method.IsPublic)
                return false;

            if (IsValidationDisabled())
                return false;

            if (_parameters.IsNullOrEmpty())
                return false;

            if (_parameters.Length != _parameterValues.Length)
                throw new Exception("Method parameter count does not match with argument count!");

            return true;
        }

        private bool IsValidationDisabled()
        {
            if (_method.IsDefined(typeof(EnableValidationAttribute), true))
                return false;

            return ReflectionHelper
                       .GetSingleAttributeOfMemberOrDeclaringTypeOrDefault<DisableValidationAttribute>(_method) != null;
        }

        private void ValidateMethodParameter(object parameterValue)
        {
            if (parameterValue == null) return;

            var parameterValueList = parameterValue as IEnumerable<object>;
            if (parameterValueList != null)
            {
                var valueList = parameterValueList.ToList();

                ValidateMethodParameterValues(valueList);
            }
            else
            {
                ValidateMethodParameterValues(new List<object> { parameterValue });
            }

            if (parameterValue is IShouldNormalize)
                _parametersToBeNormalized.Add(parameterValue as IShouldNormalize);
        }

        private void ValidateMethodParameterValues(List<object> valueList)
        {
            var ruleSet = GetRuleSet(_method);

            var validator = _validatorFactory.GetValidator(valueList.First().GetType());
            if (validator == null) return;

            foreach (var item in valueList)
                ValidateWithReflection(validator, item, ruleSet);
        }

        private static string GetRuleSet(MemberInfo method)
        {
            const string @default = "default";

            var attribute = method.GetCustomAttribute<ValidateWithRuleAttribute>();

            if (attribute == null)
                return @default;

            var rules = new List<string> { @default };

            rules.AddRange(attribute.RuleSetNames);

            return string.Join(",", rules).TrimEnd(',');
        }

        private static void ValidateAndThrow<T>(IValidator<T> validator, T argument, string ruleSet)
        {
            validator.ValidateAndThrow(argument, ruleSet);
        }

        private void ValidateWithReflection(IValidator validator, object argument, string ruleSet)
        {
            GetType().GetMethod(nameof(ValidateAndThrow), BindingFlags.Static | BindingFlags.NonPublic)
                .MakeGenericMethod(argument.GetType())
                .Invoke(null, new[] { validator, argument, ruleSet });
        }

        #endregion
    }
}

namespace MvcFramework.Framework
{
    public class FrameworkRegistry : Registry
    {
        public FrameworkRegistry()
        {
            For<IValidatorFactory>().Singleton().Use<StructureMapValidatorFactory>();

            Scan(scan =>
            {
                scan.TheCallingAssembly();
                scan.WithDefaultConventions();
                scan.LookForRegistries();
            });

            Policies.Interceptors(new DynamicProxyInterceptorPolicy(f => typeof(IApplicationService).IsAssignableFrom(f), typeof(ValidatorInterceptor),typeof(TransactionInterceptor)));
        }
    }
}

namespace MyApp.ServiceLayer.Roles
{
    public interface IRoleApplicationService :
        ICrudApplicationService<RoleViewModel, RoleCreateViewModel, RoleEditViewModel, RoleDeleteViewModel, RolePagedListRequest, RoleListViewModel>
    {
    }
}

namespace MyApp.ServiceLayer.Roles
{
    public class RoleApplicationService :
        CrudApplicationService<Role, RoleViewModel, RoleCreateViewModel, RoleEditViewModel, RoleDeleteViewModel, RolePagedListRequest, RoleListViewModel>,
        IRoleApplicationService
    {
        #region Constructor

        public RoleApplicationService(IUnitOfWork unitOfWork, IMapper mapper) : base(unitOfWork, mapper)
        {
        }

        #endregion
    }
}

namespace MyApp.Framework
{
    public class FrameworkRegistry : Registry
    {
        public FrameworkRegistry()
        {
            For<IValidatorFactory>().Singleton().Use<StructureMapValidatorFactory>();

            Scan(scan =>
            {
                scan.TheCallingAssembly();
                scan.WithDefaultConventions();
                scan.AssembliesFromApplicationBaseDirectory();
                scan.AddAllTypesOf<IRunOnEndTask>();
                scan.AddAllTypesOf<IRunOnOwinStartupTask>();
                scan.AddAllTypesOf<IRunOnStartTask>();
                scan.AddAllTypesOf<IRunOnBeginRequestTask>();
                scan.AddAllTypesOf<IRunOnErrorTask>();
                scan.AddAllTypesOf<IRunOnEndRequestTask>();

                scan.LookForRegistries();
            });

            Policies.Interceptors(new DynamicProxyInterceptorPolicy(f => typeof(IApplicationService).IsAssignableFrom(f), typeof(ValidatorInterceptor)/*, typeof(TransactionInterceptor)*/));
        }
    }
}

namespace MyApp.DataLayer
{
    public class DataLayerRegistry : Registry
    {
        public DataLayerRegistry()
        {
            Scan(scan =>
            {
                scan.TheCallingAssembly();
                scan.WithDefaultConventions();
                scan.AssembliesFromApplicationBaseDirectory();
                scan.AddAllTypesOf<IRunOnStartTask>();
            });

            //todo:use container per request (Nested Containers) instead of HttpContextLifeCycle
            For<IUnitOfWork>().Use<ApplicationDbContext>();
        }
    }
}

namespace MyApp.ServiceLayer
{
    public class ServiceLayerRegistry : Registry
    {
        #region Constructor

        public ServiceLayerRegistry()
        {
            Scan(scan =>
            {
                scan.TheCallingAssembly();
                scan.WithDefaultConventions();
                scan.AssembliesFromApplicationBaseDirectory();
                scan.AddAllTypesOf<IRunOnEndTask>();
                scan.AddAllTypesOf<IRunOnOwinStartupTask>();
                scan.AddAllTypesOf<IRunOnStartTask>();
                scan.AddAllTypesOf<IRunOnBeginRequestTask>();
                scan.AddAllTypesOf<IRunOnErrorTask>();
                scan.AddAllTypesOf<IRunOnEndRequestTask>();

                scan.Assembly(typeof(DataLayerRegistry).Assembly);
                scan.LookForRegistries();

                scan.AddAllTypesOf<Profile>().NameBy(item => item.FullName);
                scan.AddAllTypesOf<IHaveCustomMappings>().NameBy(item => item.FullName);
            });

            FluentValidationConfig();
            AutoMapperConfig();
        }

        #endregion

        #region Private Methods

        private void AutoMapperConfig()
        {
            For<MapperConfiguration>().Singleton().Use("MapperConfig", ctx =>
            {
                var config = new MapperConfiguration(cfg =>
                {
                    cfg.CreateMissingTypeMaps = true;
                    AddProfiles(ctx, cfg);
                    AddIHaveCustomMappings(ctx, cfg);
                    AddMapFrom(cfg);
                });

                config.AssertConfigurationIsValid();

                return config;
            });

            For<IMapper>().Singleton().Use(ctx => ctx.GetInstance<MapperConfiguration>().CreateMapper(ctx.GetInstance));
        }

        private void FluentValidationConfig()
        {
            AssemblyScanner.FindValidatorsInAssembly(Assembly.GetExecutingAssembly())
                .ForEach(result =>
                {
                    For(result.InterfaceType)
                        .Singleton()
                        .Use(result.ValidatorType);
                });
        }

        private static void AddMapFrom(IProfileExpression cfg)
        {
            var types = typeof(RoleViewModel).Assembly.GetExportedTypes();
            var maps = (from t in types
                        from i in t.GetInterfaces()
                        where i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IMapFrom<>) && !t.IsAbstract &&
                              !t.IsInterface
                        select new
                        {
                            Source = i.GetGenericArguments()[0],
                            Destination = t
                        }).ToArray();

            foreach (var map in maps)
                cfg.CreateMap(map.Source, map.Destination);
        }

        private static void AddProfiles(IContext ctx, IMapperConfigurationExpression cfg)
        {
            var profiles = ctx.GetAllInstances<Profile>().ToList();
            foreach (var profile in profiles)
                cfg.AddProfile(profile);
        }

        private static void AddIHaveCustomMappings(IContext ctx, IMapperConfigurationExpression cfg)
        {
            var mappings = ctx.GetAllInstances<IHaveCustomMappings>().ToList();
            foreach (var mapping in mappings)
                mapping.CreateMappings(cfg);
        }

        #endregion
    }
}

namespace MyApp.Web
{
    public class WebRegistry : Registry
    {
        public WebRegistry()
        {
            Scan(scan =>
            {
                scan.TheCallingAssembly();
                scan.WithDefaultConventions();
                scan.AssembliesFromApplicationBaseDirectory();
                
                scan.AddAllTypesOf<IRunOnEndTask>();
                scan.AddAllTypesOf<IRunOnOwinStartupTask>();
                scan.AddAllTypesOf<IRunOnStartTask>();
                scan.AddAllTypesOf<IRunOnBeginRequestTask>();
                scan.AddAllTypesOf<IRunOnErrorTask>();
                scan.AddAllTypesOf<IRunOnEndRequestTask>();

                scan.Assembly(typeof(ServiceLayerRegistry).Assembly);
                scan.LookForRegistries();
            });
        }
    }
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)

using Microsoft.Extensions.Hosting;