ISEbd-21_Gruzdev_A.P._ComputersShop/ComputersShop/ComputersShopBusinessLogic/BusinessLogic/ShopLogic.cs

using ComputersShopContracts.BindingModels;
using ComputersShopContracts.BusinessLogicsContracts;
using ComputersShopContracts.SearchModels;
using ComputersShopContracts.StoragesContracts;
using ComputersShopContracts.ViewModels;
using ComputersShopDataModels.Models;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;

namespace ComputersShopBusinessLogic.BusinessLogic
{
    public class ShopLogic : IShopLogic
    {
        private readonly ILogger _logger;
        private readonly IShopStorage _shopStorage;
        private readonly IComputerStorage _computerStorage;

        public ShopLogic(ILogger<ShopLogic> logger, IShopStorage shopStorage, IComputerStorage computerStorage)
        {
            _logger = logger;
            _shopStorage = shopStorage;
            _computerStorage = computerStorage;
        }

        public List<ShopViewModel>? ReadList(ShopSearchModel? model)
        {
            _logger.LogInformation("ReadList. ShopName:{ShopName}.Id:{ Id}", model?.ShopName, model?.Id);
            var list = model == null ? _shopStorage.GetFullList() : _shopStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
            return list;
        }

        public ShopViewModel? ReadElement(ShopSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation("ReadElement. ShopName:{ShopName}.Id:{ Id}", model.ShopName, model.Id);
            var element = _shopStorage.GetElement(model);
            if (element == null)
            {
                _logger.LogWarning("ReadElement element not found");
                return null;
            }
            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
            return element;
        }

        public bool Create(ShopBindingModel model)
        {
            CheckModel(model);
            if (_shopStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            return true;
        }

        public bool Update(ShopBindingModel model)
        {
            CheckModel(model);
            if (_shopStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }
            return true;
        }

        public bool Delete(ShopBindingModel model)
        {
            CheckModel(model, false);
            _logger.LogInformation("Delete. Id:{Id}", model.Id);
            if (_shopStorage.Delete(model) == null)
            {
                _logger.LogWarning("Delete operation failed");
                return false;
            }
            return true;
        }

        public bool MakeSupply(SupplyBindingModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (model.Count <= 0)
            {
                return false;
                throw new ArgumentException("Количество добавляемого компьютера должно быть больше 0", nameof(model.Count));
            }
            var shop = _shopStorage.GetElement(new ShopSearchModel
            {
                Id = model.ShopId
            });
            if (shop == null)
            {
                throw new ArgumentException("Магазина не существует");
            }
            if (model.Capacity - model.Computers.Select(x => x.Value.Item2).Sum() < model.Count)
            {
                throw new ArgumentNullException("В магазине не хватает места", nameof(model.Count));
            }
            if (shop.ShopComputers.ContainsKey(model.ComputerId))
            {
                var oldValue = shop.ShopComputers[model.ComputerId];
                oldValue.Item2 += model.Count;
                shop.ShopComputers[model.ComputerId] = oldValue;
                Capacity = model.Capacity,
            }
            else
            {
                var computer = _computerStorage.GetElement(new ComputerSearchModel
                {
                    Id = model.ComputerId
                });
                if (computer == null)
                {
                    throw new ArgumentException($"Поставка: Товар с id:{model.ComputerId} не найденн");
                }
                shop.ShopComputers.Add(model.ComputerId, (computer, model.Count));
            }
            return true;
        }

        private void CheckModel(ShopBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.Adress))
            {
                throw new ArgumentException("Адрес магазина длжен быть заполнен", nameof(model.Adress));
            }
            if (string.IsNullOrEmpty(model.ShopName))
            {
                throw new ArgumentException("Название магазина должно быть заполнено", nameof(model.ShopName));
            }
            _logger.LogInformation("Shop. ShopName:{ShopName}.Adres:{Adres}.OpeningDate:{OpeningDate}.Id:{ Id}", model.ShopName, model.Adress, model.OpeningDate, model.Id);
            var element = _shopStorage.GetElement(new ShopSearchModel
            {
                ShopName = model.ShopName
            });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Магазин с таким названием уже есть");
            }
        }
        public bool AddComputers(IComputerModel computer, int quantity)
        {
            if (computer == null)
            {
                throw new ArgumentNullException(nameof(computer));
            }
            if (quantity <= 0)
            {
                throw new ArgumentException("Количество компьютеров должно быть больше 0", nameof(quantity));
            }
            _logger.LogInformation("AddComputers. ShopName:{ShopName}. Id:{Id}", computer.ComputerName, computer.Id);
            var allFreeQuantity = _shopStorage.GetFullList().Select(x => x.Capacity - x.Computers.Select(x => x.Value.Item2).Sum()).Sum();
            if (allFreeQuantity < quantity)
            {
                _logger.LogWarning("AddComputers operation failed.");
                return false;
            }
            foreach (var shop in _shopStorage.GetFullList())
            {
                int freeQuantity = shop.Capacity - shop.Computers.Select(x => x.Value.Item2).Sum();
                if (freeQuantity <= 0)
                {
                    continue;
                }
                if (freeQuantity < quantity)
                {
                    if (!MakeSupply(new() { Id = shop.Id }, computer, freeQuantity))
                    {
                        _logger.LogWarning("AddComputers operation failed.");
                        return false;
                    }
                    quantity -= freeQuantity;
                }
                else
                {
                    if (!MakeSupply(new() { Id = shop.Id }, computer, quantity))
                    {
                        _logger.LogWarning("AddComputers operation failed.");
                        return false;
                    }
                    quantity = 0;
                }
                if (quantity == 0)
                {
                    return true;
                }
            }
            _logger.LogWarning("AddComputers operation failed.");
            return false;
        }
        public bool SellComputers(IComputerModel computer, int quantity)
        {
            return _shopStorage.SellComputers(computer, quantity);
        }
    }
}