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

namespace BankBusinessLogic.BusinessLogics
{
    public class AdditionsLogic : IAdditionsLogic
    {
        private readonly ILogger _logger;
        private readonly IAdditionsPlanStorage _additionsStorage;

        public AdditionsLogic(ILogger<AdditionsLogic> logger, IAdditionsPlanStorage mealPlanStorage)
        {
            _logger = logger;
            _additionsStorage = mealPlanStorage;
        }
        public bool Create(AdditionsBindingModel model)
        {
            CheckModel(model);

            if (_additionsStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }

            return true;
        }

        public bool Delete(AdditionsBindingModel model)
        {
            CheckModel(model, false);

            _logger.LogInformation("Delete. Id:{Id}", model.Id);

            if (_additionsStorage.Delete(model) == null)
            {
                _logger.LogWarning("Delete operation failed");
                return false;
            }

            return true;
        }

        public AdditionsViewModel? ReadElement(AdditionsSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }

            _logger.LogInformation("ReadElement. MealPlanName:{MealPlanName}.Id:{Id}", model.AdditionsName, model.Id);

            var element = _additionsStorage.GetElement(model);

            if (element == null)
            {
                _logger.LogWarning("ReadElement element not found");
                return null;
            }

            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);

            return element;
        }

        public List<AdditionsViewModel>? ReadList(AdditionsSearchModel? model)
        {
            _logger.LogInformation("ReadList. MealPlanName:{MealPlanName}.Id:{ Id}", model?.AdditionsName, model?.Id);

            var list = model == null ? _additionsStorage.GetFullList() : _additionsStorage.GetFilteredList(model);

            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }

            _logger.LogInformation("ReadList. Count:{Count}", list.Count);

            return list;
        }

        public bool Update(AdditionsBindingModel model)
        {
            CheckModel(model);

            if (_additionsStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }

            return true;
        }

        private void CheckModel(AdditionsBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }

            if (!withParams)
            {
                return;
            }

            if (string.IsNullOrEmpty(model.AdditionsName))
            {
                throw new ArgumentNullException("Нет названия плана питания", nameof(model.AdditionsName));
            }

            if (model.AdditionsPrice<0)
            {
                throw new ArgumentNullException("Стоимость плана питания не может быть меньше 0", nameof(model.AdditionsPrice));
            }

            _logger.LogInformation("MealPlan. MealPlanName:{MealPlanName}.MealPlanPrice:{ MealPlanPrice}. Id: { Id}", model.AdditionsName, model.AdditionsPrice, model.Id);

            var element = _additionsStorage.GetElement(new AdditionsSearchModel
            {
                AdditionsName = model.AdditionsName
            });

            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("План питания с таким названием уже есть");
            }
        }
    }
}