98 lines
2.9 KiB
C#
98 lines
2.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using UniversityContracts.BindingModels;
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using UniversityContracts.BusinessLogicContracts;
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using UniversityContracts.SearchModels;
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using UniversityContracts.StoragesContracts;
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using UniversityContracts.ViewModels;
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namespace UniversityBusinessLogic.BusinessLogics
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{
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public class DisciplineLogic : IDisciplineLogic
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{
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private readonly IDisciplineStorage _disciplineStorage;
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public DisciplineLogic(IDisciplineStorage disciplineStorage)
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{
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_disciplineStorage = disciplineStorage;
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}
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public bool Create(DisciplineBindingModel model)
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{
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CheckModel(model);
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if (_disciplineStorage.Insert(model) == null)
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{
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return false;
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}
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return true;
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}
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public bool Delete(DisciplineBindingModel model)
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{
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CheckModel(model, false);
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if (_disciplineStorage.Delete(model) == null)
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{
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return false;
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}
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return true;
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}
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public DisciplineViewModel? ReadElement(DisciplineSearchModel model)
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{
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if (model == null)
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{
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throw new ArgumentNullException(nameof(model));
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}
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var discipline = _disciplineStorage.GetElement(model);
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if (discipline == null)
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{
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return null;
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}
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return discipline;
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}
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public List<DisciplineViewModel>? ReadList(DisciplineSearchModel? model)
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{
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var list = model == null ? _disciplineStorage.GetFullList() : _disciplineStorage.GetFilteredList(model);
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if (list == null)
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{
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return null;
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}
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return list;
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}
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public bool Update(DisciplineBindingModel model)
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{
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CheckModel(model, false);
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if (_disciplineStorage.Update(model) == null)
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{
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return false;
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}
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return true;
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}
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private void CheckModel(DisciplineBindingModel model, bool withParams = true)
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{
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if (model == null)
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{
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throw new ArgumentNullException(nameof(model));
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}
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if (!withParams)
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{
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return;
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}
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if (string.IsNullOrEmpty(model.Name))
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{
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throw new ArgumentNullException("Нет Имени", nameof(model.Name));
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}
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var discipline = _disciplineStorage.GetElement(new DisciplineSearchModel { Name = model.Name });
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if (discipline != null)
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{
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throw new InvalidOperationException("Дисциплина с таким названием уже есть");
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}
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}
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}
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}
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