forked from DavidMakarov/StudentEnrollment
107 lines
3.0 KiB
C#
107 lines
3.0 KiB
C#
using Microsoft.Extensions.Logging;
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using StudentEnrollmentContracts.BindingModels;
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using StudentEnrollmentContracts.BusinessLogicContracts;
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using StudentEnrollmentContracts.SearchModels;
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using StudentEnrollmentContracts.StorageContracts;
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using StudentEnrollmentContracts.ViewModels;
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namespace StudentEnrollmentBusinessLogic
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{
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public class CourseLogic : ICourseLogic
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{
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private readonly ILogger _logger;
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private readonly ICourseStorage _courseStorage;
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public CourseLogic(ILogger<CourseLogic> logger, ICourseStorage
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courseStorage)
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{
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_logger = logger;
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_courseStorage = courseStorage;
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}
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public List<CourseViewModel>? ReadList(CourseSearchModel? model)
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{
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_logger.LogInformation("ReadList. CourseName:{CourseName}.Id:{ Id}", model?.CourseName, model?.Id);
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var list = model == null ? _courseStorage.GetFullList() :
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_courseStorage.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 CourseViewModel? ReadElement(CourseSearchModel 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. CourseName:{CourseName}.Id:{ Id}", model.CourseName, model.Id);
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var element = _courseStorage.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(CourseBindingModel model)
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{
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CheckModel(model);
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if (_courseStorage.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(CourseBindingModel model)
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{
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CheckModel(model);
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if (_courseStorage.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(CourseBindingModel 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 (_courseStorage.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(CourseBindingModel 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.CourseName))
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{
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throw new ArgumentNullException("Нет названия направления!",
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nameof(model.CourseName));
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}
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_logger.LogInformation("Course. CourseName:{CourseName}. Id: { Id}", model.CourseName, model.Id);
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var element = _courseStorage.GetElement(new CourseSearchModel
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{
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CourseName = model.CourseName
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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("Направление 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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