using CarServiceContracts.BindingModels; using CarServiceContracts.BusinessLogicsContracts; using CarServiceContracts.SearchModels; using CarServiceContracts.StorageContracts; using CarServiceContracts.ViewModels; using Microsoft.Extensions.Logging; namespace CarServiceBusinessLogic.BusinessLogics { public class ItemLogic : IItemLogic { private readonly ILogger _logger; private readonly IItemStorage _itemStorage; public ItemLogic(ILogger<ItemLogic> logger, IItemStorage itemStorage) { _logger = logger; _itemStorage = itemStorage; } public List<ItemViewModel>? ReadList(ItemSearchModel? model) { _logger.LogInformation("ReadList. Id: {Id}", model?.Id); var list = model == null ? _itemStorage.GetFullList() : _itemStorage.GetFilteredList(model); if (list == null) { _logger.LogWarning("ReadList return null list"); return null; } _logger.LogInformation("ReadList. Count: {Count}", list.Count); return list; } public ItemViewModel? ReadElement(ItemSearchModel model) { if (model == null) { throw new ArgumentNullException(nameof(model)); } _logger.LogInformation("ReadElement. Id: {Id}", model.Id); var element = _itemStorage.GetElement(model); if (element == null) { _logger.LogWarning("ReadElement element not found"); return null; } _logger.LogInformation("ReadElement found. Id: {Id}", element.Id); return element; } public bool Create(ItemBindingModel model) { CheckModel(model); if (_itemStorage.Insert(model) == null) { _logger.LogWarning("Insert operation failed"); return false; } return true; } public bool Update(ItemBindingModel model) { CheckModel(model); if (_itemStorage.Update(model) == null) { _logger.LogWarning("Update operation failed"); return false; } return true; } public bool Delete(ItemBindingModel model) { CheckModel(model, false); _logger.LogInformation("Delete. Id:{Id}", model.Id); if (_itemStorage.Delete(model) == null) { _logger.LogWarning("Delete operation failed"); return false; } return true; } private void CheckModel(ItemBindingModel model, bool withParams = true) { if (model == null) { throw new ArgumentNullException(nameof(model)); } if (!withParams) { return; } //Заполнено ли название? if (string.IsNullOrEmpty(model.Name)) { _logger.LogWarning("Item name is empty"); throw new ArgumentException("Не введено название"); } //Название уникально? var existingItem = _itemStorage.GetElement(new() { Name = model.Name }); if (existingItem != null) { _logger.LogWarning("Item name is not unique"); throw new ArgumentException("Работа с таким названием уже есть"); } //Цена больше 0? if (model.Price <= 0) { _logger.LogWarning("Work Price is <= 0"); throw new ArgumentException("Цена должна быть больше 0"); } _logger.LogInformation("Item. Id: {Id}", model.Id); } } }