using CanteenContracts.BindingModels;
using CanteenContracts.BusinessLogicsContracts;
using CanteenContracts.SearchModel;
using CanteenContracts.StoragesContracts;
using CanteenContracts.View;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CanteenBusinessLogic.BusinessLogics
{
    public class TablewareLogic : ITablewareLogic
    {
        private readonly ILogger _logger;
        private readonly ITablewareStorage _tablewareStorage;

        public TablewareLogic(ILogger<TablewareLogic> logger, ITablewareStorage tablewareStorage)
        {
            _logger = logger;
            _tablewareStorage = tablewareStorage;
        }
        public bool Create(TablewareBindingModel model)
        {
            CheckModel(model);

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

            return true;
        }

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

            _logger.LogInformation("Delete. Id: {Id}", model.Id);
            if (_tablewareStorage.Delete(model) == null)
            {
                _logger.LogWarning("Delete operation failed");
                return false;
            }

            return true;
        }

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

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

            var element = _tablewareStorage.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<TablewareViewModel>? ReadList(TablewareSearchModel? model)
        {
            _logger.LogInformation("ReadList. TablewareName: {TablewareName}. Id: {Id}", model?.TablewareName, model?.Id);

            var list = model == null ? _tablewareStorage.GetFullList() : _tablewareStorage.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(TablewareBindingModel model)
        {
            CheckModel(model);

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

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

            if (!withParams)
            {
                return;
            }

            if (string.IsNullOrEmpty(model.TablewareName))
            {
                throw new ArgumentNullException("Нет названия у прибора", nameof(model.TablewareName));
            }

            if (model.VisitorId <= 0)
            {
                throw new ArgumentNullException("id посетителя должен дыть больше 0", nameof(model.VisitorId));
            }

            _logger.LogInformation("Tableware. TablewareName: {TablewareName}. VisitorId: {VisitorId}. Id: {Id}", model.TablewareName, model.VisitorId, model.Position, model.Id);

            var element = _tablewareStorage.GetElement(new TablewareSearchModel { TablewareName = model.TablewareName });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Такой прибор уже есть");
            }
        }
    }
}