118 lines
4.2 KiB
C#
118 lines
4.2 KiB
C#
using Microsoft.Extensions.Logging;
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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 StudentLogic : IStudentLogic
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{
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private readonly ILogger _logger;
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private readonly IStudentStorage _studentStorage;
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public StudentLogic(ILogger<StudentLogic> logger, IStudentStorage studentStorage)
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{
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_logger = logger;
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_studentStorage = studentStorage;
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}
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public List<StudentViewModel>? ReadList(StudentSearchModel? 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 ? _studentStorage.GetFullList() :
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_studentStorage.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 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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_logger.LogInformation("ReadElement. Name:{Name}.Id:{Id}",
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model.Name, model.Id);
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var element = _studentStorage.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(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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_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(StudentBindingModel model)
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{
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CheckModel(model);
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if (_studentStorage.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(StudentBindingModel 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 (_studentStorage.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(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 имени студента",
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nameof(model.Name));
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}
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if (string.IsNullOrEmpty(model.PhoneNumber))
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{
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throw new ArgumentNullException("Должен быть номер телефона", nameof(model.PhoneNumber));
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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("Student. Name:{Name}.PhoneNumber:{PhoneNumber}. UserId: {UserId}. Id: {Id}",
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model.Name, model.PhoneNumber, model.UserId, model.Id);
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var element = _studentStorage.GetElement(new StudentSearchModel
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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 студент уже существует");
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}
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}
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}
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}
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