using HotelContracts.BindingModels;
using HotelContracts.BusinessLogicsContracts;
using HotelContracts.SearchModels;
using HotelContracts.StoragesContracts;
using HotelContracts.ViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace HotelBusinessLogic
{
    public class RoomLogic : IRoomLogic
    {
        private readonly IRoomStorage _roomStorage;

        public RoomLogic(IRoomStorage roomStorage)
        {
            _roomStorage = roomStorage;
        }
        public RoomViewModel? ReadElement(RoomSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }

            var element = _roomStorage.GetElement(model);
            if (element == null)
            {
                return null;
            }
            return element;
        }

        public List<RoomViewModel>? ReadList(RoomSearchModel? model)
        {
            var list = model == null ? _roomStorage.GetFullList() : _roomStorage.GetFilteredList(model);
            if (list == null)
            {
                return null;
            }
            return list;
        }

        public bool Create(RoomBindingModel model)
        {
            CheckModel(model);
            if (_roomStorage.Insert(model) == null)
            {
                return false;
            }
            return true;
        }

        public bool Delete(RoomBindingModel model)
        {
            CheckModel(model, false);
            if (_roomStorage.Delete(model) == null)
            {
                return false;
            }
            return true;
        }

        public bool Update(RoomBindingModel model)
        {
            CheckModel(model);
            if (_roomStorage.Update(model) == null)
            {
                return false;
            }
            return true;
        }

        private void CheckModel(RoomBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.Condition))
            {
                throw new ArgumentNullException("Нет поля состояние", nameof(model.Condition));
            }
            if (model.WorkerId <= 0)
            {
                throw new ArgumentNullException("Некорректный идентификатор рабочего", nameof(model.WorkerId));
            }
            if (model.Number <= 0)
            {
                throw new ArgumentNullException("нет поля номера", nameof(model.Number));
            }
            if (model.Floor <= 0)
            {
                throw new ArgumentNullException("нет поля этаж", nameof(model.Floor));
            }
            if (model.NumberOfBeds <= 0)
            {
                throw new ArgumentNullException("нет поля количество спальных мест", nameof(model.NumberOfBeds));
            }
            if (model.Cost <= 0)
            {
                throw new ArgumentNullException("нет поля цены", nameof(model.Cost));
            }

        }
    }
}