public async Task <UpdateResult> Handle(ActorUpdateCommand command,
                                                CancellationToken cancellationToken)
        {
            try
            {
                Logger.LogInformation(AppLogEvent.HandleRequest,
                                      "Handle Actor Update {Command}", command.ToDictionary());

                if (command is null || string.IsNullOrWhiteSpace(command.Id))
                {
                    Logger.LogWarning(AppLogEvent.HandleArgumentError,
                                      "Actor Update Command is empty");
                    return(ErrorResult("Actor Update Command is empty"));
                }

                var validator        = new ActorUpdateCommandValidator();
                var validationResult = await validator.ValidateAsync(command)
                                       .ConfigureAwait(false);

                if (!validationResult.IsValid)
                {
                    var validationErrors = validationResult.Errors
                                           .Select(x => x.ErrorMessage)
                                           .ToList();
                    Logger.LogWarning(AppLogEvent.HandleArgumentError,
                                      "Actor Update Command validation error. " +
                                      "Command={Command}. Error={Error}.",
                                      command.ToDictionary(), validationErrors);
                    return(ErrorResult(validationErrors));
                }

                var oldActorResponse = await Mediator
                                       .Send(new DbGetEntityByIdRequest <Actor>(command.Id))
                                       .ConfigureAwait(false);

                if (!oldActorResponse.Success)
                {
                    Logger.LogWarning(AppLogEvent.HandleErrorResponse,
                                      "Get actor for update error. Id={Id}. Error={Error}",
                                      command.Id, oldActorResponse.Errors);
                    return(ErrorResult(oldActorResponse.Errors));
                }
                var oldActor = oldActorResponse.Entity;

                var currentActorRequest =
                    new DbGetActorByNameRequest
                        (command.CurrentPrincipal?.Identity?.Name);
                var currentActorResponse = await Mediator
                                           .Send(currentActorRequest)
                                           .ConfigureAwait(false);

                var currentActor = currentActorResponse.Success
                    ? currentActorResponse.Entity
                    : null;

                Actor newActor = command.ToActor(oldActor);

                // Check duplicates for new login
                if (newActor.Login != oldActor.Login)
                {
                    var duplicateRequest = new DbGetActorByNameRequest
                                               (newActor.Login);
                    var duplicateResponse = await Mediator
                                            .Send(duplicateRequest)
                                            .ConfigureAwait(false);

                    if (duplicateResponse.Success &&
                        duplicateResponse.Entity != null)
                    {
                        Logger.LogWarning(AppLogEvent.RequestValidationError,
                                          "Validation command error. Command={command}. " +
                                          "Error={Error}.",
                                          command.ToDictionary(), "Duplicated actor login");
                        return(ErrorResult("Duplicated actor login"));
                    }
                }

                var validatorBeforeSave        = new ActorBeforeSaveValidator();
                var validationBeforeSaveResult = await validatorBeforeSave
                                                 .ValidateAsync(newActor)
                                                 .ConfigureAwait(false);

                if (!validationBeforeSaveResult.IsValid)
                {
                    Logger.LogWarning(AppLogEvent.RequestValidationError,
                                      "Update Actor validation error. Entity={Entity}. " +
                                      "Error={Error}.", newActor.ToDictionary(),
                                      validationBeforeSaveResult.Errors);
                    return(ErrorResult(validationBeforeSaveResult.Errors
                                       .Select(x => x.ErrorMessage)));
                }

                var permissionValidateResult = await CheckPermissionAsync
                                                   (oldActor, newActor, currentActor)
                                               .ConfigureAwait(false);

                if (!permissionValidateResult.IsValid)
                {
                    Logger.LogWarning(AppLogEvent.SecurityNotPassed,
                                      "Current actor has no rights to update Actor. " +
                                      "Actor={Actor}. Entity before update={OldEntity}. " +
                                      "Entity after update={NewEntity}. Error={Error}.",
                                      currentActor.ToDictionary(), oldActor.ToDictionary(),
                                      newActor.ToDictionary(),
                                      permissionValidateResult.Errors
                                      .Select(x => x.ErrorMessage));
                    return(ErrorResult(permissionValidateResult.Errors
                                       .Select(x => x.ErrorMessage)));
                }

                var updateCommand = new DbUpdateCommand <Actor>(newActor);
                var updateResult  = await Mediator.Send(updateCommand)
                                    .ConfigureAwait(false);

                return(updateResult);
            }

            catch (Exception e)
            {
                Logger.LogError(AppLogEvent.HandleErrorResponse, e,
                                "Actor update exception");
                return(ErrorResult("Actor update exception"));
            }
        }
        public async Task <CreateResult> Handle(ActorCreateCommand command,
                                                CancellationToken cancellationToken)
        {
            Logger.LogInformation(AppLogEvent.HandleRequest,
                                  "Handle Actor Create Command. Command={Command}",
                                  command.ToDictionary());

            if (command is null)
            {
                Logger.LogWarning(AppLogEvent.HandleArgumentError,
                                  "Handle Create Actor Command got empty command");
                return(ErrorResult("Empty Actor Create command"));
            }

            try
            {
                var validator        = new ActorCreateCommandValidator();
                var validationResult = await validator.ValidateAsync(command)
                                       .ConfigureAwait(false);

                if (!validationResult.IsValid)
                {
                    Logger.LogWarning(AppLogEvent.RequestValidationError,
                                      "Validation command error. Command = {command}. " +
                                      "Error = {Error}",
                                      command.ToDictionary(), validationResult.Errors);
                    return(ErrorResult(validationResult.Errors
                                       .Select(x => x.ErrorMessage)));
                }

                // Check duplicates
                var dbActorRequest    = new DbGetActorByNameRequest(command.Login);
                var duplicateResponse = await Mediator.Send(dbActorRequest)
                                        .ConfigureAwait(false);

                if (duplicateResponse.Success &&
                    duplicateResponse.Entity != null)
                {
                    Logger.LogWarning(AppLogEvent.RequestValidationError,
                                      "Validation command error. Command={command}. " +
                                      "Error={Error}.",
                                      command.ToDictionary(), "Duplicated actor login");
                    return(ErrorResult("Duplicated actor login"));
                }

                // Get Actor for current user by user name
                Actor createdBy = null;
                if (!command.DataSeedMode)
                {
                    var currentUserName = command.CurrentPrincipal?
                                          .Identity?
                                          .Name;
                    var creatorRequest = new DbGetActorByNameRequest
                                             (currentUserName);
                    var creatorResponse = await Mediator.Send(creatorRequest)
                                          .ConfigureAwait(false);

                    if (creatorResponse.Success)
                    {
                        createdBy = creatorResponse.Entity;
                    }
                }

                var actor = command.ToActor(createdBy?.Id);

                var validatorBeforeSave        = new ActorBeforeSaveValidator();
                var validationBeforeSaveResult = await validatorBeforeSave
                                                 .ValidateAsync(actor)
                                                 .ConfigureAwait(false);

                if (!validationBeforeSaveResult.IsValid)
                {
                    Logger.LogWarning(AppLogEvent.RequestNotValid,
                                      "Actor validation error. Entity={Entity}. " +
                                      "Error={Error}",
                                      actor.ToDictionary(),
                                      validationBeforeSaveResult.Errors);
                    return(ErrorResult(validationBeforeSaveResult.Errors
                                       .Select(x => x.ErrorMessage)));
                }

                if (!command.DataSeedMode)
                {
                    var checkPermissionResult =
                        await CheckPermission(actor, createdBy)
                        .ConfigureAwait(false);

                    if (!checkPermissionResult.Success)
                    {
                        Logger.LogWarning(AppLogEvent.SecurityNotPassed,
                                          "Actor check create permission error. " +
                                          "Entity={Entity}. CurrentActor={CurrentActor}." +
                                          " Error={Error}",
                                          actor.ToDictionary(), createdBy?.ToDictionary(),
                                          checkPermissionResult.Errors);
                        return(checkPermissionResult);
                    }
                }

                var createCommand = new DbCreateCommand <Actor>(actor);
                var createResult  = await Mediator.Send(createCommand)
                                    .ConfigureAwait(false);

                return(createResult);
            }
            catch (Exception e)
            {
                Logger.LogError(AppLogEvent.HandleErrorResponse, e,
                                "Call repository exception");
                return(ErrorResult("Not found"));
            }
        }