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 ClientLogic : IClientLogic
    {
        private readonly IClientStorage _clientStorage;

        public ClientLogic(IClientStorage clientStorage)
        {
            _clientStorage = clientStorage;
        }
        public ClientViewModel? ReadElement(ClientSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }

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

        public List<ClientViewModel>? ReadList(ClientSearchModel? model)
        {
            var list = model == null ? _clientStorage.GetFullList() : _clientStorage.GetFilteredList(model);
            if (list == null)
            {
                return null;
            }
            return list;
        }

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

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

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

        private void CheckModel(ClientBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.Name))
            {
                throw new ArgumentNullException("Нет имени клиента", nameof(model.Name));
            }
            if (string.IsNullOrEmpty(model.Surname))
            {
                throw new ArgumentNullException("Нет фамилии клиента", nameof(model.Surname));
            }
            if (string.IsNullOrEmpty(model.PhoneNumber))
            {
                throw new ArgumentNullException("Нет номера телефона", nameof(model.PhoneNumber));
            }
            if (string.IsNullOrEmpty(model.Password))
            {
                throw new ArgumentNullException("Нет пароля", nameof(model.Password));
            }

        }
    }
}