using Kean.Domain.Stock.Repositories;
using System.Threading.Tasks;

namespace Kean.Domain.Stock.SharedServices
{
    /// <summary>
    /// 获取库存规格
    /// </summary>
    public sealed class GetSpec
    {
        private readonly IStockRepository _stockRepository;

        /// <summary>
        /// 依赖注入
        /// </summary>
        public GetSpec(IStockRepository stockRepository) =>
            _stockRepository = stockRepository;

        /// <summary>
        /// 处理程序
        /// </summary>
        /// <param name="barcode">条码</param>
        /// <returns>库存规格</returns>
        public Task<int?> Handler(string barcode) => 
            _stockRepository.GetSpec(barcode);
    }
}