SUBD_TransportCompany/TransportCompany/TransportCompanyBusinessLogic/BusinessLogics/TransportLogic.cs

using Microsoft.Extensions.Logging;
using TransportCompanyContracts.BindingModels;
using TransportCompanyContracts.BusinessLogicsContracts;
using TransportCompanyContracts.SearchModels;
using TransportCompanyContracts.StoragesContracts;
using TransportCompanyContracts.ViewModels;

namespace TransportCompanyBusinessLogic.BusinessLogics
{
    public class TransportLogic : ITransportLogic
    {
        private readonly ILogger _logger;

        private readonly ITransportStorage _transportStorage;

        public TransportLogic(ILogger<CargoLogic> logger, ITransportStorage transportStorage)
        {
            _logger = logger;
            _transportStorage = transportStorage;
        }

        public List<TransportViewModel>? ReadList(TransportSearchModel? model)
        {
            _logger.LogInformation("ReadList. Model:{Model}. Id:{Id}", model?.Model, model?.Id);
            var list = model == null ? _transportStorage.GetFullList() : _transportStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
            return list;
        }

        public TransportViewModel? ReadElement(TransportSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation("ReadElement. Model:{Model}. Id:{Id}", model.Model, model.Id);
            var element = _transportStorage.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(TransportBindingModel model)
        {
            CheckModel(model);
            if (_transportStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            return true;
        }

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

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

        private void CheckModel(TransportBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.Model))
            {
                throw new ArgumentNullException("Нет модели авто", nameof(model.Model));
            }
            if (model.LoadCapacity <= 0)
            {
                throw new ArgumentNullException("Вместимость авто должна быть больше 0", nameof(model.LoadCapacity));
            }
            if (string.IsNullOrEmpty(model.StateNumber))
            {
                throw new ArgumentNullException("Нет автомобильного номера", nameof(model.StateNumber));
            }
            _logger.LogInformation("Cargo. Model:{Model}. LoadCapacity:{LoadCapacity}. StateNumber:{StateNumber}. Id:{Id}", model.Model, model.LoadCapacity, model.StateNumber, model.Id);
            var element = _transportStorage.GetElement(new TransportSearchModel
            {
                StateNumber = model.StateNumber
            });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Авто с таким автомобильным номером уже есть");
            }
        }
    }
}