using iWareCommon.Common.Service;
using iWareDataCore.BASE.Dao;
using iWareDataCore.BASE.Entity;
using iWareDataCore.ORM;
using System;
using System.Linq;

namespace iWareDataCore.BASE.Service
{
    public class MaterialClassService : CommonService<MaterialClassEntity, BASEMaterialClass, DbModelCore>
    {

        private static object Lock = new object();

        private MaterialClassService() : base(MaterialClassDao.GetInstance()) { }

        private static MaterialClassService Instance = null;

        /// <summary>
        /// 获取单例的方法
        /// </summary>
        /// <returns>角色服务的单例实体</returns>
        public static MaterialClassService GetInstance()
        {

            if (Instance == null)
            {
                lock (Lock)
                {
                    if (Instance == null)
                    {
                        Instance = new MaterialClassService();
                    }
                }
            }
            return Instance;
        }

        public int DeleteMaterialClass(int id, out string msg)
        {
            msg = "";
            using (var dbModel = new DbModelCore())
            {
                try
                {
                    var materialClass = dbModel.BASEMaterialClass.FirstOrDefault(x => x.id == id);
                    if (materialClass != null)
                    {
                        var materialCodeLs = dbModel.BASEMaterials.Where(x => x.materialno == materialClass.materialno).Select(x =>x.code).Distinct().ToList();
                        if (materialCodeLs != null && materialCodeLs.Count > 0)
                        {
                            msg = "物料信息存在，不能删除";
                            return 0;
                        }
                        else
                        {
                            dbModel.BASEMaterialClass.Remove(materialClass);
                            dbModel.SaveChanges();
                            return 1;
                        }
                    }
                    else
                    {
                        msg = "规格不存在";
                        return 0;
                    }
                }
                catch (Exception ex) {
                    msg = ex.ToString();
                    return 0;
                }
            }
        }

        
    }
}