using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace BLL
{
    /// <summary>
    /// 库存初始化
    /// </summary>
    public static class StockInitService
    {
        /// <summary>
        /// 根据主键获取库存初始化信息
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public static Model.Weld_StockInit GetStockInitById(string id)
        {
            return Funs.DB.Weld_StockInit.FirstOrDefault(e => e.StockInitId == id);
        }

        /// <summary>
        /// 添加库存初始化
        /// </summary>
        /// <param name="stockInit"></param>
        public static void AddStockInit(Model.Weld_StockInit stockInit)
        {
            Model.SGGLDB db = Funs.DB;
            Model.Weld_StockInit newStockInit = new Model.Weld_StockInit();
            newStockInit.StockInitId = stockInit.StockInitId;
            newStockInit.WeldId = stockInit.WeldId;
            newStockInit.Amount = stockInit.Amount;
            newStockInit.Weight = stockInit.Weight;
            db.Weld_StockInit.InsertOnSubmit(newStockInit);
            db.SubmitChanges();
        }

        /// <summary>
        /// 修改库存初始化
        /// </summary>
        /// <param name="stockInit"></param>
        public static void UpdateStockInit(Model.Weld_StockInit stockInit)
        {
            Model.SGGLDB db = Funs.DB;
            Model.Weld_StockInit newStockInit = db.Weld_StockInit.FirstOrDefault(e => e.StockInitId == stockInit.StockInitId);
            if (newStockInit != null)
            {
                newStockInit.WeldId = stockInit.WeldId;
                newStockInit.Amount = stockInit.Amount;
                newStockInit.Weight = stockInit.Weight;
                db.SubmitChanges();
            }
        }

        /// <summary>
        /// 根据主键删除库存初始化
        /// </summary>
        /// <param name="id"></param>
        public static void DeleteStockInitById(string id)
        {
            Model.SGGLDB db = Funs.DB;
            Model.Weld_StockInit stockInit = db.Weld_StockInit.FirstOrDefault(e => e.StockInitId == id);
            if (stockInit != null)
            {
                db.Weld_StockInit.DeleteOnSubmit(stockInit);
                db.SubmitChanges();
            }
        }

        /// <summary>
        /// 根据焊材ID获取库存数量
        /// </summary>
        /// <param name="weldId"></param>
        /// <returns></returns>
        public static int GetStockInitByWeldId(string weldId)
        {
            return (from x in Funs.DB.Weld_StockInit where x.WeldId == weldId select x).Count();
        }
    }
}