SUBD_SportCompetitions/SportCompetitionsBusinessLogic/BusinessLogics/RecordLogic.cs

using SportCompetitionsContracts.BindingModels;
using SportCompetitionsContracts.BusinessLogicsContracts;
using SportCompetitionsContracts.SearchModels;
using SportCompetitionsContracts.StoragesContracts;
using SportCompetitionsContracts.ViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SportCompetitionsBusinessLogic.BusinessLogics
{
	public class RecordLogic : IRecordLogic
	{
		private readonly IRecordStorage _RecordStorage;

		public RecordLogic(IRecordStorage RecordStorage)
		{
			_RecordStorage = RecordStorage;
		}
		public RecordViewModel? ReadElement(RecordSearchModel model)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}

			var element = _RecordStorage.GetElement(model);
			if (element == null)
			{
				return null;
			}
			return element;
		}

		public List<RecordViewModel>? ReadList(RecordSearchModel? model)
		{
			var list = model == null ? _RecordStorage.GetFullList() : _RecordStorage.GetFilteredList(model);
			if (list == null)
			{
				return null;
			}
			return list;
		}

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

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

		public bool Update(RecordBindingModel model)
		{
			CheckModel(model);
			if (_RecordStorage.Update(model) == null)
			{
				return false;
			}
			return true;
		}

		private void CheckModel(RecordBindingModel model, bool withParams = true)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}
			if (!withParams)
			{
				return;
			}
			if (string.IsNullOrEmpty(model.RecordName))
			{
				throw new ArgumentNullException("Нет названия", nameof(model.RecordName));
			}
		}
	}
}