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

namespace BarBusinessLogic.BusinessLogics
{
    public class CocktailLogic : ICocktailLogic
    {
        private readonly ILogger _logger;
        private readonly ICocktailStorage _cocktailStorage;

        public CocktailLogic(ILogger<CocktailLogic> logger, ICocktailStorage cocktailStorage)
        {
            _logger = logger;
            _cocktailStorage = cocktailStorage;
        }
        public List<CocktailViewModel>? ReadList(CocktailSearchModel? model)
        {
            _logger.LogInformation("ReadList. CocktailName:{CocktailName}. Id:{ Id}", model?.CocktailName, model?.Id);
            var list = model == null ? _cocktailStorage.GetFullList() : _cocktailStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
            return list;
        }

        public CocktailViewModel? ReadElement(CocktailSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation("ReadElement. CocktailName:{CocktailName}.Id:{ Id}", model.CocktailName, model.Id);
            var element = _cocktailStorage.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(CocktailBindingModel model)
        {
            CheckModel(model);
            if (_cocktailStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            return true;
        }
        public bool Update(CocktailBindingModel model)
        {
            CheckModel(model);
            if (_cocktailStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }
            return true;
        }
        public bool Delete(CocktailBindingModel model)
        {
            CheckModel(model, false);
            _logger.LogInformation("Delete. Id:{Id}", model.Id);
            if (_cocktailStorage.Delete(model) == null)
            {
                _logger.LogWarning("Delete operation failed");
                return false;
            }
            return true;
        }
        private void CheckModel(CocktailBindingModel model, bool withParams =
       true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.CocktailName))
            {
                throw new ArgumentNullException("Нет названия компонента",
               nameof(model.CocktailName));
            }
            if (model.Price <= 0)
            {
                throw new ArgumentNullException("Цена компонента должна быть больше 0", nameof(model.Price));
            }
            _logger.LogInformation("Cocktail. CocktailName:{CocktailName}.Cost:{ Cost}. Id: { Id}", model.CocktailName, model.Price, model.Id);
            var element = _cocktailStorage.GetElement(new CocktailSearchModel
            {
                CocktailName = model.CocktailName
            });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Компонент с таким названием уже есть");
            }
        }
    }
}