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

namespace BLL
{
    /// <summary>
    /// 规格
    /// </summary>
    public static class SpecificationsService
    {
        /// <summary>
        /// 根据主键获取规格
        /// </summary>
        /// <param name="specificationsId"></param>
        /// <returns></returns>
        public static Model.Weld_Specifications GetSpecificationsById(string specificationsId)
        {
            return Funs.DB.Weld_Specifications.FirstOrDefault(e => e.SpecificationsId == specificationsId);
        }

        /// <summary>
        /// 添加规格设置
        /// </summary>
        /// <param name="specifications"></param>
        public static void AddSpecifications(Model.Weld_Specifications specifications)
        {
            Model.SGGLDB db = Funs.DB;
            Model.Weld_Specifications newSpecifications = new Model.Weld_Specifications();
            newSpecifications.SpecificationsId = specifications.SpecificationsId;
            newSpecifications.Specifications = specifications.Specifications;
            newSpecifications.MaxUsingNum = specifications.MaxUsingNum;
            newSpecifications.WeldTypeId = specifications.WeldTypeId;
            newSpecifications.CreateMan = specifications.CreateMan;
            newSpecifications.Remark = specifications.Remark;
            db.Weld_Specifications.InsertOnSubmit(newSpecifications);
            db.SubmitChanges();
        }

        /// <summary>
        /// 修改规格设置
        /// </summary>
        /// <param name="specifications"></param>
        public static void UpdateSpecifications(Model.Weld_Specifications specifications)
        {
            Model.SGGLDB db = Funs.DB;
            Model.Weld_Specifications newSpecifications = db.Weld_Specifications.FirstOrDefault(e => e.SpecificationsId == specifications.SpecificationsId);
            if (newSpecifications != null)
            {
                newSpecifications.Specifications = specifications.Specifications;
                newSpecifications.WeldTypeId = specifications.WeldTypeId;
                newSpecifications.MaxUsingNum = specifications.MaxUsingNum;
                newSpecifications.ModifyMan = specifications.ModifyMan;
                newSpecifications.Remark = specifications.Remark;
                db.SubmitChanges();
            }
        }

        /// <summary>
        /// 根据主键删除规格设置
        /// </summary>
        /// <param name="specificationsId"></param>
        public static void DeleteSpecificationsById(string specificationsId)
        {
            Model.SGGLDB db = Funs.DB;
            Model.Weld_Specifications specifications = db.Weld_Specifications.FirstOrDefault(e => e.SpecificationsId == specificationsId);
            if (specifications != null)
            {
                db.Weld_Specifications.DeleteOnSubmit(specifications);
                db.SubmitChanges();
            }
        }

        /// <summary>
        /// 根据焊材类型获取相关规格
        /// </summary>
        /// <param name="weldTypeId"></param>
        /// <returns></returns>
        public static List<Model.Weld_Specifications> GetSpecificationsByWeldTypeId(string weldTypeId)
        {
            return (from x in Funs.DB.Weld_Specifications where x.WeldTypeId == weldTypeId orderby x.Specifications select x).ToList();
        }

        /// <summary>
        /// 验证规格是否存在
        /// </summary>
        /// <param name="name"></param>
        /// <param name="id"></param>
        /// <returns></returns>
        public static bool IsExitSpecifications(string weldTypeId, string specifications, string id)
        {
            var q = Funs.DB.Weld_Specifications.FirstOrDefault(x => x.WeldTypeId == weldTypeId && x.Specifications == specifications && x.SpecificationsId != id);
            if (q != null)
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        /// <summary>
        /// 根据焊材类型、规格获取规格设置信息
        /// </summary>
        /// <param name="weldTypeId"></param>
        /// <param name="spec"></param>
        /// <returns></returns>
        public static Model.Weld_Specifications GetSpecificationsByWeldTypeIdSpec(string weldTypeId, string spec)
        {
            return Funs.DB.Weld_Specifications.FirstOrDefault(e => e.WeldTypeId == weldTypeId && e.Specifications == spec);
        }
    }
}