using InternetShopContracts.DataBindingModels;
using InternetShopContracts.DataSearchModels;
using InternetShopContracts.DataViewModels;
using InternetShopContracts.LogicsContracts;
using InternetShopContracts.StorageContracts;

namespace InternetShopLogics.Logics
{
    public class OrderLogic : IOrderLogic
    {
        private IOrderStorage _orderStorage;

        public OrderLogic(IOrderStorage orderStorage)
        {
            _orderStorage = orderStorage;
        }

        public bool Create(OrderBindingModel model)
        {
            CheckModel(model);
            if (_orderStorage.Insert(model) == null)
            {
                return false;
            }
            return true;
        }

        public bool Delete(OrderBindingModel model)
        {
            CheckModel(model, false);
            if (_orderStorage.Delete(model) == null)
            {
                return false;
            }
            return true;
        }

        public OrderViewModel? ReadElement(OrderSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            return _orderStorage.GetElement(model);
        }

        public List<OrderViewModel> ReadList(OrderSearchModel? model = null)
        {
            List<OrderViewModel>? list = null;
            if (model == null)
            {
                list = _orderStorage.GetFullList();
            }
            else
            {
                list = _orderStorage.GetFilteredList(model);
            }
            if (list == null)
            {
                return new List<OrderViewModel>();
            }
            return list;
        }

        public bool Update(OrderBindingModel model)
        {
            CheckModel(model);
            if (_orderStorage.Update(model) == null)
            {
                return false;
            }
            return true;
        }

        private void CheckModel(OrderBindingModel model, bool checkParams = true)
        {
            if (model == null) throw new ArgumentNullException(nameof(model));
            if (!checkParams) return;
            if (string.IsNullOrEmpty(model.CustomerFIO))
            {
                throw new ArgumentNullException("Нет фио заказчика", nameof(model.CustomerFIO));
            }
            if (string.IsNullOrEmpty(model.CustomerEmail))
            {
                throw new ArgumentNullException("Нет email заказчика", nameof(model.CustomerEmail));
            }
            if (string.IsNullOrEmpty(model.ImagePath))
            {
                throw new ArgumentNullException("Нет фото заказа", nameof(model.ImagePath));
            }
            if (model.ProductNames == null)
            {
                throw new ArgumentNullException("Список товаров не инициализирован", nameof(model.ProductNames));
            }
            else if (model.ProductNames.Count == 0)
            {
                throw new ArgumentException("Список товаров пуст", nameof(model.ProductNames));
            }
        }
    }
}