using bnhtrade.Core.Data.Database.UnitOfWork;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace bnhtrade.Core.Logic.Inventory
{
    public class StockStatusService : UnitOfWorkBase
    {
        public StockStatusService() : base() { }

        internal StockStatusService(IUnitOfWork unitOfWork) : base(unitOfWork) { }

        public Dictionary<int, Model.Stock.Status> GetStatus(List<int> statusIds = null, List<int> statusTypeIds = null)
        {
            return WithUnitOfWork(uow =>
            {
                return uow.StockStatusRepository.ReadStatus(statusIds, statusTypeIds);
            });
        }

        /// <summary>
        /// Return the avaliable balance of a status. Uses a more efficent sql/code. However, balance requests should
        /// generally also involve a date/time (i.e. the system does allow a stock transaction in the future, therefore
        /// this method may give an available quantity, but transfers before that date wouod not be possible).
        /// </summary>
        /// <param name="sku">SKU number</param>
        /// <param name="statusId">Status ID</param>
        /// <returns>Balance as quantity</returns>
        private int GetAvailableBalanceBySku(string sku, int statusId)
        {
            return WithUnitOfWork(uow =>
            {
                if (string.IsNullOrWhiteSpace(sku))
                {
                    throw new ArgumentException("SKU number is null, empty, or whitespace", nameof(sku));
                }

                return uow.StockJournalRepository.ReadStatusBalanceBySku(sku, statusId);
            });
        }


    }
}