104 lines
3.1 KiB
C#
104 lines
3.1 KiB
C#
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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 StudentLogic : IStudentLogic
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{
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private readonly IStudentStorage _studentStorage;
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public StudentLogic(IStudentStorage studentStorage)
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{
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_studentStorage = studentStorage;
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}
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public bool Create(StudentBindingModel model)
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{
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CheckModel(model);
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if (_studentStorage.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 Update(StudentBindingModel model)
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{
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CheckModel(model, false);
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if (_studentStorage.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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public bool Delete(StudentBindingModel model)
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{
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CheckModel(model, false);
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if (_studentStorage.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 StudentViewModel? ReadElement(StudentSearchModel 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 student = _studentStorage.GetElement(model);
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if (student == null)
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{
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return null;
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}
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return student;
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}
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public List<StudentViewModel>? ReadList(StudentSearchModel? model)
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{
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var list = model == null ? _studentStorage.GetFullList() : _studentStorage.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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private void CheckModel(StudentBindingModel 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 названия документа", nameof(model.Name));
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}
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if (model.StudentCard <= 0)
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{
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throw new ArgumentNullException("Неверно указан номер студенческого билета", nameof(model.Name));
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}
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var student = _studentStorage.GetElement(new StudentSearchModel
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{
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StudentCard = model.StudentCard,
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});
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if (student != null && student.Id != model.Id)
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{
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throw new InvalidOperationException("Приказ 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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