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

namespace ShipyardBusinessLogic
{
    public class ShipLogic : IShipLogic
    {
        private readonly ILogger _logger;
        private readonly IShipStorage _ShipStorage;
        public ShipLogic(ILogger<ShipLogic> logger, IShipStorage ShipStorage)
        {
            _logger = logger;
            _ShipStorage = ShipStorage;
        }

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

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

        private void CheckModel(ShipBindingModel model, bool withParams =
        true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.ShipName))
            {
                throw new ArgumentNullException("Нет названия корабля",
               nameof(model.ShipName));
            }
            if (model.Price <= 0)
            {
                throw new ArgumentNullException("Цена кораблей должна быть больше 0", nameof(model.Price));
            }
            _logger.LogInformation("Ship. Ship:{Ship}. Price:{ Price }. Id: { Id}", model.ShipName, model.Price, model.Id);
            var element = _ShipStorage.GetElement(new ShipSearchModel
            {
                ShipName = model.ShipName
            });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Компонент с таким названием уже есть");
            }
        }
    }

}