using IceCreamShopContracts.BindingModels; using IceCreamShopContracts.BusinessLogicsContracts; using IceCreamShopContracts.SearchModels; using IceCreamShopContracts.StoragesContracts; using IceCreamShopContracts.ViewModels; using IceCreamShopDataModels; using IceCreamShopDataModels.Enums; using IceCreamShopDataModels.Models; using Microsoft.Extensions.Logging; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace IceCreamShopBusinessLogic.BusinessLogic { public class OrderLogic : IOrderLogic { private readonly ILogger _logger; private readonly IOrderStorage _orderStorage; private readonly IShopStorage _shopStorage; private readonly IShopLogic _shopLogic; private readonly IIceCreamStorage _iceCreamStorage; static readonly object locker = new object(); public OrderLogic(IOrderStorage orderStorage, IShopStorage shopStorage, IShopLogic shopLogic, IIceCreamStorage iceCreamStorage, ILogger logger) { _orderStorage = orderStorage; _shopStorage = shopStorage; _logger = logger; _shopLogic = shopLogic; _iceCreamStorage = iceCreamStorage; } public OrderViewModel? ReadElement(OrderSearchModel model) { if (model == null) { throw new ArgumentNullException(nameof(model)); } _logger.LogInformation("ReadElement. Id:{ Id}", model.Id); var element = _orderStorage.GetElement(model); if (element == null) { _logger.LogWarning("ReadElement element not found"); return null; } _logger.LogInformation("ReadElement find. Id:{Id}", element.Id); return element; } public List? ReadList(OrderSearchModel? model) { _logger.LogInformation("ReadList. Id:{ Id}", model?.Id); var list = model == null ? _orderStorage.GetFullList() : _orderStorage.GetFilteredList(model); if (list == null) { _logger.LogWarning("ReadList return null list"); return null; } _logger.LogInformation("ReadList. Count:{Count}", list.Count); return list; } public bool CreateOrder(OrderBindingModel model) { CheckModel(model); if (model.Status != OrderStatus.Неизвестен) return false; model.Status = OrderStatus.Принят; if (_orderStorage.Insert(model) == null) { _logger.LogWarning("Insert operation failed"); return false; } return true; } public bool CheckSupply(IIceCreamModel iceCream, int count) { if (count <= 0) { _logger.LogWarning("Check then supply operation error. IceCream count < 0."); return false; } int sumCapacity = 0; int sumCount = 0; sumCapacity = _shopStorage.GetFullList().Select(x => x.MaxCapacity).Sum(); sumCount = _shopStorage.GetFullList().Select(x => x.ShopIceCreams.Select(y => y.Value.Item2).Sum()).Sum(); int freeSpace = sumCapacity - sumCount; if (freeSpace - count < 0) { _logger.LogWarning("Check then supply operation error. There's no place for new IceCream in shops."); return false; } foreach (var shop in _shopStorage.GetFullList()) { freeSpace = shop.MaxCapacity; foreach (var doc in shop.ShopIceCreams) { freeSpace -= doc.Value.Item2; } if (freeSpace == 0) { continue; } if (freeSpace - count >= 0) { if (_shopLogic.MakeSupply(new() { Id = shop.Id }, iceCream, count)) count = 0; else { _logger.LogWarning("Supply error"); return false; } } if (freeSpace - count < 0) { if (_shopLogic.MakeSupply(new() { Id = shop.Id }, iceCream, freeSpace)) count -= freeSpace; else { _logger.LogWarning("Supply error"); return false; } } if (count <= 0) { return true; } } return false; } public bool ChangeStatus(OrderBindingModel model, OrderStatus status) { CheckModel(model, false); var element = _orderStorage.GetElement(new OrderSearchModel { Id = model.Id }); if (element == null) { _logger.LogWarning("Read operation failed"); return false; } if (element.Status != status - 1) { _logger.LogWarning("Status change operation failed"); throw new InvalidOperationException("Текущий статус заказа не может быть переведен в выбранный"); } if(element.Status == OrderStatus.Готов) { var icecream = _iceCreamStorage.GetElement(new IceCreamSearchModel() { Id = model.IceCreamId }); if (icecream == null) { _logger.LogWarning("Status update to " + status.ToString() + " operation failed. Document not found."); return false; } if (CheckSupply(icecream, model.Count) == false) { _logger.LogWarning("Status update to " + status.ToString() + " operation failed. Shop supply error."); return false; } } model.Status = status; if (model.Status == OrderStatus.Выдан) model.DateImplement = DateTime.Now; if (element.ImplementerId.HasValue) model.ImplementerId = element.ImplementerId; _orderStorage.Update(model); return true; } public bool TakeOrderInWork(OrderBindingModel model) { lock (locker) { return ChangeStatus(model, OrderStatus.Выполняется); } } public bool FinishOrder(OrderBindingModel model) { return ChangeStatus(model, OrderStatus.Готов); } public bool DeliveryOrder(OrderBindingModel model) { return ChangeStatus(model, OrderStatus.Выдан); } private void CheckModel(OrderBindingModel model, bool withParams = true) { if (model == null) { throw new ArgumentNullException(nameof(model)); } if (!withParams) { return; } if (model.Sum <= 0) { throw new ArgumentNullException("Цена заказа должна быть больше 0", nameof(model.Sum)); } if (model.Count <= 0) { throw new ArgumentNullException("Количество элементов в заказе должно быть больше 0", nameof(model.Count)); } _logger.LogInformation("Order. Sum:{ Cost}. Id: { Id}", model.Sum, model.Id); } } }