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

namespace CarCenterBusinessLogic.BusinessLogics
{
    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. Id:{Id}", 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. Id:{Id}", 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);
            _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)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (string.IsNullOrEmpty(model.Name))
            {
                throw new ArgumentNullException("Нет названия машины!", nameof(model.Name));
            }
            if (model.EmployeeId < 0)
            {
                throw new InvalidOperationException("Неверный ID сотрудника");
            }
            _logger.LogInformation("Car. Name:{Name}. EmployeeId:{EmployeeId}. Id:{Id}", model.Name, model.EmployeeId, model.Id);
        }
    }
}