113 lines
2.6 KiB
C#
113 lines
2.6 KiB
C#
using SchoolScheduleContracts.BindingModels;
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using SchoolScheduleContracts.BusinessLogicsContracts;
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using SchoolScheduleContracts.SearchModels;
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using SchoolScheduleContracts.StoragesContracts;
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using SchoolScheduleContracts.ViewModels;
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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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namespace SchoolScheduleBusinessLogic
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{
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public class GradeLogic : IGradeLogic
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{
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private readonly IGradeStorage _gradeStorage;
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private readonly IStudentStorage _studentStorage;
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public GradeLogic(IGradeStorage gradeStorage, IStudentStorage studentStorage)
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{
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_gradeStorage = gradeStorage;
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_studentStorage = studentStorage;
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}
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public List<GradeViewModel> ReadList(GradeSearchModel? model)
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{
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var list = model == null ? _gradeStorage.GetFullList() :
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_gradeStorage.GetFilteredList(model);
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return list;
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}
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public GradeViewModel? ReadElement(GradeSearchModel 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 element = _gradeStorage.GetElement(model);
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return element;
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}
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public List<StudentViewModel> GetStudents(GradeSearchModel model)
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{
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var list = _studentStorage.GetFilteredList(new StudentSearchModel { GradeId = model.Id });
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return list;
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}
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public bool Create(GradeBindingModel model)
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{
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CheckModel(model);
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if (_gradeStorage.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(GradeBindingModel model)
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{
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CheckModel(model);
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if (_gradeStorage.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(GradeBindingModel model)
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{
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CheckModel(model, false);
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if (_gradeStorage.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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private void CheckModel(GradeBindingModel model, bool withParams =
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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 (!(model.Letter >= 'A' && model.Letter <= 'Z'))
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{
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throw new ArgumentNullException("Буква класса не является заглавной буквой",
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nameof(model.Letter));
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}
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if (!(model.Year >= 1 && model.Year <= 11))
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{
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throw new ArgumentNullException("Год класса не является числом от 1 до 11",
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nameof(model.Letter));
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}
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var element = _gradeStorage.GetElement(new GradeSearchModel
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{
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Letter = model.Letter,
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Year = model.Year
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});
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if (element != null && element.Id != model.Id)
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{
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throw new InvalidOperationException("Такой класс уже есть");
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}
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}
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}
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}
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