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 WorkerLogic : IWorkerLogic
    {
        private readonly IWorkerStorage _workerStorage;

        public WorkerLogic(IWorkerStorage workerStorage)
        {
            _workerStorage = workerStorage;
        }
        public WorkerViewModel? ReadElement(WorkerSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }

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

        public List<WorkerViewModel>? ReadList(WorkerSearchModel? model)
        {
            var list = model == null ? _workerStorage.GetFullList() : _workerStorage.GetFilteredList(model);
            if (list == null)
            {
                return null;
            }
            return list;
        }

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

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

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

        private void CheckModel(WorkerBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.Phone))
            {
                throw new ArgumentNullException("Нет поля номер телефона", nameof(model.Phone));
            }
            if (string.IsNullOrEmpty(model.FIO))
            {
                throw new ArgumentNullException("Нет поля ФИО", nameof(model.FIO));
            }
            if (model.PostId <= 0)
            {
                throw new ArgumentNullException("Некорректный идентификатор должности", nameof(model.PostId));
            }
            if (model.WorkExperience < 0)
            {
                throw new ArgumentNullException("Рабочий опыт не может быть меньше 0", nameof(model.WorkExperience));
            }
            if (model.PostId <= 0)
            {
                throw new ArgumentNullException("Некорректный идентификатор должности", nameof(model.PostId));
            }
            if (model.Salary <= 0)
            {
                throw new ArgumentNullException("Зарплата не может быть меньше 0", nameof(model.Salary));
            }


        }
    }
}