using Microsoft.Extensions.Logging;
using STOContracts.BindingModels;
using STOContracts.BusinessLogicsContracts;
using STOContracts.SearchModels;
using STOContracts.StorageContracts;
using STOContracts.ViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ShipyardBusinessLogic
{
    public class CarLogic: ICarLogic
    {
        private readonly ILogger _logger;
        private readonly ICarStorage _CarStorage;
        public CarLogic(ILogger<CarLogic> logger, ICarStorage CarStorage)
        {
            _logger = logger;
            _CarStorage = CarStorage;
        }

        public List<CarViewModel>? ReadList(CarSearchModel? model)
        {
            _logger.LogInformation("ReadList. CarNumber:{CarNumber}. Id:{ Id}", model?.CarNumber, model?.Id);
            var list = model == null ? _CarStorage.GetFullList() : _CarStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
            return list;
        }
        public CarViewModel? ReadElement(CarSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation("ReadElement. CarNumber:{CarNumber}.Id:{ Id}", model.CarNumber, model.Id);
            var element = _CarStorage.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(CarBindingModel model)
        {
            CheckModel(model);
            if (_CarStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            return true;
        }

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

        private void CheckModel(CarBindingModel model, bool withParams =
        true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.CarNumber))
            {
                throw new ArgumentNullException("Нет гос номера автомобиля",
               nameof(model.CarNumber));
            }
            if (string.IsNullOrEmpty(model.CarBrand))
            {
                throw new ArgumentNullException("Нет марки автомобиля",
               nameof(model.CarNumber));
            }
            if (string.IsNullOrEmpty(model.CarModel))
            {
                throw new ArgumentNullException("Нет модели автомобиля",
               nameof(model.CarNumber));
            }
            _logger.LogInformation("Car. Car:{Car}. Id: { Id}", model.CarNumber, model.Id);
            var element = _CarStorage.GetElement(new CarSearchModel
            {
                CarNumber = model.CarNumber
            });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("авто с таким номером уже есть");
            }
        }
    }
}