84 lines
2.8 KiB
C#
84 lines
2.8 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.SearchModels;
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using UniversityContracts.StorageContracts;
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using UniversityContracts.ViewModels;
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using UniversityDatabaseImplement.Models;
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// TODO
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namespace UniversityDatabaseImplement.Implements
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{
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public class TeacherStorage: ITeacherStorage
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{
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public List<TeacherViewModel> GetFullList()
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{
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using var context = new UniversityDatabase();
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return context.Teachers
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.Select(x => x.GetViewModel)
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.ToList();
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}
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public List<TeacherViewModel> GetFilteredList(TeacherSearchModel model)
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{
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if (string.IsNullOrEmpty(model.Name))
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{
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return new();
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}
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using var context = new UniversityDatabase();
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return context.Teachers
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.Where(x => x.Name.Contains(model.Name))
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.Select(x => x.GetViewModel)
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.ToList();
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}
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public TeacherViewModel? GetElement(TeacherSearchModel model)
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{
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if (string.IsNullOrEmpty(model.Name) && !model.Id.HasValue)
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{
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return null;
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}
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using var context = new UniversityDatabase();
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return context.Teachers
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.FirstOrDefault(x =>
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(!string.IsNullOrEmpty(model.Name) && x.Name == model.Name) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
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}
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public TeacherViewModel? Insert(TeacherBindingModel model)
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{
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var newTeacher = Teacher.Create(model);
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if (newTeacher == null)
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{
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return null;
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}
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using var context = new UniversityDatabase();
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context.Teachers.Add(newTeacher);
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context.SaveChanges();
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return newTeacher.GetViewModel;
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}
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public TeacherViewModel? Update(TeacherBindingModel model)
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{
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using var context = new UniversityDatabase();
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var component = context.Teachers.FirstOrDefault(x => x.Id == model.Id);
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if (component == null)
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{
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return null;
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}
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component.Update(model);
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context.SaveChanges();
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return component.GetViewModel;
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}
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public TeacherViewModel? Delete(TeacherBindingModel model)
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{
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using var context = new UniversityDatabase();
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var element = context.Teachers.FirstOrDefault(rec => rec.Id == model.Id);
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if (element != null)
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{
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context.Teachers.Remove(element);
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context.SaveChanges();
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return element.GetViewModel;
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}
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return null;
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}
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}
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}
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