using Microsoft.Extensions.Logging;
using TravelCompanyContracts.BindingModels;
using TravelCompanyContracts.BusinessLogicsContracts;
using TravelCompanyContracts.SearchModels;
using TravelCompanyContracts.StoragesContracts;
using TravelCompanyContracts.ViewModels;
using TravelCompanyDataModels.Enums;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using static TravelCompanyBusinessLogic.BusinessLogic.ShopLogic;

namespace TravelCompanyBusinessLogic.BusinessLogic
{
    public class ShopLogic : IShopLogic
    {
        public class ShopLogic : IShopLogic
        {
            private readonly ILogger _logger;
            private readonly IShopStorage _shopStorage;
            private readonly ITravelStorage _travelStorage;

            public ShopLogic(ILogger<ShopLogic> logger, IShopStorage shopStorage, ITravelStorage travelStorage)
            {
                _logger = logger;
                _shopStorage = shopStorage;
                _travelStorage = travelStorage;
            }

            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 TravelViewModel? 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)
                {
                    throw new ArgumentException("Количество изделий должно быть больше 0");
                }
                var shop = _shopStorage.GetElement(new ShopSearchModel
                {
                    Id = model.ShopId
                });
                if (shop == null)
                {
                    throw new ArgumentException("Магазина не существует");
                }
                if (shop.ShopPizzas.ContainsKey(model.PizzaId))
                {
                    var oldValue = shop.ShopPizzas[model.PizzaId];
                    oldValue.Item2 += model.Count;
                    shop.ShopPizzas[model.PizzaId] = oldValue;
                }
                else
                {
                    var pizza = _pizzaStorage.GetElement(new PizzaSearchModel
                    {
                        Id = model.PizzaId
                    });
                    if (pizza == null)
                    {
                        throw new ArgumentException($"Поставка: Товар с id:{model.PizzaId} не найденн");
                    }
                    shop.ShopPizzas.Add(model.PizzaId, (pizza, 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");
                }
            }
        }
    }
}