128 lines
4.6 KiB
C#
128 lines
4.6 KiB
C#
using Microsoft.Extensions.Logging;
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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.BusinessLogicsContracts;
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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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namespace UniversityBusinessLogic.BusinessLogics
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{
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public class TeacherLogic : ITeacherLogic
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{
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private readonly ILogger _logger;
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private readonly ITeacherStorage _teacherStorage;
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public TeacherLogic(ILogger<StudentLogic> logger, ITeacherStorage
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teacherStorage)
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{
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_logger = logger;
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_teacherStorage = teacherStorage;
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}
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public List<TeacherViewModel>? ReadList(TeacherSearchModel? model)
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{
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_logger.LogInformation("ReadList. Name: {Name}.Id:{Id} ",
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model?.Name, model?.Id);
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var list = model == null ? _teacherStorage.GetFullList() :
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_teacherStorage.GetFilteredList(model);
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if (list == null)
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{
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_logger.LogWarning("ReadList return null list");
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return null;
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}
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_logger.LogInformation("ReadList. Count:{Count}", list.Count);
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return list;
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}
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public TeacherViewModel? ReadElement(TeacherSearchModel 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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_logger.LogInformation("ReadElement. Name:{Name}.Id:{Id}",
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model.Name, model.Id);
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var element = _teacherStorage.GetElement(model);
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if (element == null)
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{
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_logger.LogWarning("ReadElement element not found");
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return null;
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}
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_logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
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return element;
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}
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public bool Create(TeacherBindingModel model)
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{
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CheckModel(model);
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if (_teacherStorage.Insert(model) == null)
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{
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_logger.LogWarning("Insert operation failed");
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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(TeacherBindingModel model)
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{
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CheckModel(model);
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if (_teacherStorage.Update(model) == null)
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{
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_logger.LogWarning("Update operation failed");
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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(TeacherBindingModel model)
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{
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CheckModel(model, false);
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_logger.LogInformation("Delete. Id:{Id}", model.Id);
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if (_teacherStorage.Delete(model) == null)
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{
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_logger.LogWarning("Delete operation failed");
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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(TeacherBindingModel 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",
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nameof(model.Name));
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}
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if (string.IsNullOrEmpty(model.AcademicDegree))
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{
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throw new ArgumentNullException("Не указана учёная степень", nameof(model.AcademicDegree));
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}
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if (string.IsNullOrEmpty(model.Position))
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{
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throw new ArgumentNullException("Нет должности",
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nameof(model.Position));
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}
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if (model.UserId < 0)
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{
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throw new ArgumentNullException("Некорректный идентификатор пользователя", nameof(model.UserId));
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}
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_logger.LogInformation("Teacher. Name:{Name}.AcademicDegree:{AcademicDegree}. Position:{Position}. UserId: {UserId}. Id: {Id}",
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model.Name, model.AcademicDegree, model.Position, model.UserId, model.Id);
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var element = _teacherStorage.GetElement(new TeacherSearchModel
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{
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Name = model.Name
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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("Данный преподаватель уже существует");
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}
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}
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}
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}
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