COP3PLUSSagirov/BuisnessLogic/TypeLogic.cs

using Contracts.BindingModels;
using Contracts.BuisnessLogicsContracts;
using Contracts.SearchModels;
using Contracts.StorageContracts;
using Contracts.ViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BuisnessLogic
{
    public class TypeLogic : ITypeLogic
    {
        ITypeStorage _typeStorage;

        public TypeLogic(ITypeStorage typeStorage)
        {
            _typeStorage = typeStorage;
        }

        public bool Create(TypeBindingModel model)
        {
            CheckModel(model);
            if (_typeStorage.Insert(model) == null)
            {
                return false;
            }
            return true;
        }

        public bool Delete(TypeBindingModel model)
        {
            CheckModel(model, false);
            if (_typeStorage.Delete(model) == null)
            {
                return false;
            }
            return true;
        }

        public TypeViewModel? ReadElement(TypeSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            var element = _typeStorage.GetElement(model);
            if (element == null)
            {
                return null;
            }
            return element;
        }

        public List<TypeViewModel>? ReadList(TypeSearchModel? model)
        {
            var list = model == null ? _typeStorage.GetFullList() : _typeStorage.GetFilteredList(model);
            if (list == null)
            {
                return null;
            }
            return list;
        }

        public bool Update(TypeBindingModel model)
        {
            CheckModel(model);
            if (_typeStorage.Update(model) == null)
            {
                return false;
            }
            return true;
        }
        private void CheckModel(TypeBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.PostType))
            {
                throw new ArgumentNullException("Тип не указан", nameof(model.PostType));
            }
        }
    }
}