using System;
using System.Collections.Generic;
using System.Text;
using Tanshu.Accounts.Contracts;
using System.Data.SqlClient;
using Tanshu.Data.DAO;
using Tanshu.Accounts.Entities;
using Tanshu.Accounts.SqlDAO;
using NHibernate.Criterion;
using NHibernate;

namespace Tanshu.Accounts.Repository
{
    public static class ProductGroupModifierBI
    {
        public static void Insert(ProductGroupModifier productGroupModifier)
        {
            using (var session = SessionManager.Session)
            {
                session.Save(productGroupModifier);
            }
        }
        public static void Update(ProductGroupModifier productGroupModifier)
        {
            using (var session = SessionManager.Session)
            {
                session.Update(productGroupModifier);
            }
        }
        public static void Delete(int productGroupModifierID)
        {
            using (var session = SessionManager.Session)
            {
                session.Delete(new ProductGroupModifier() { ProductGroupModifierID = productGroupModifierID });
            }
        }
        public static IList<ProductGroupModifier> GetProductGroupModifiers()
        {
            using (var session = SessionManager.Session)
            {
                return session.CreateCriteria<ProductGroupModifier>()
                    .List<ProductGroupModifier>();
            }
        }

        public static IList<Modifier> GetProductGroupModifiers(int productGroupID)
        {
            using (var session = SessionManager.Session)
            {
                var list = (from pgm in session.QueryOver<ProductGroupModifier>()
                            where pgm.ProductGroup == null || pgm.ProductGroup.ProductGroupID == productGroupID
                            select pgm.Modifier).Fetch(x => x.Modifier).Eager.List<Modifier>();
                //NHibernateUtil.Initialize(list);
                foreach (var item in list)
                    NHibernateUtil.Initialize(item);
                return list;
            }
        }
        public static bool HasCompulsoryModifier(int productGroupID)
        {
            using (var session = SessionManager.Session)
            {
                var l = from gf in session.QueryOver<ProductGroupModifier>()
                        where gf.ShowAutomatically == true && (gf.ProductGroup == null || gf.ProductGroup.ProductGroupID == productGroupID)
                        select gf;
                int c = l.RowCount();
                return c > 0;
                //                var a = session.CreateQuery(@"
                //select count(pgm)
                //from ProductGroupModifier as pgm
                //where pgm.ShowAutomatically = true
                //and (ProductGroupID is null or ProductGroupID = :ProductGroupID")
                //                .SetInt32("ProductGroupID", productGroupID)
                //                .UniqueResult<int>();
                //                return a > 0;
                //var count1 = session.CreateCriteria<ProductGroupModifier>()
                //    .Add(Restrictions.Eq("ShowAutomatically", true))
                //    .Add(Restrictions.IsNull("ProductGroupID"))
                //    .SetProjection(Projections.Count("ProductGroupModifierID")).UniqueResult();
                //return (int)count1 > 0;

                ////var count = session.CreateSQLQuery (@"
                ////SELECT COUNT(*) FROM Entities_ProductGroupModifiers WHERE 
                ////var counts = session.QueryOver<ProductGroupModifier>()
                ////    .Where(c => c.ShowAutomatically == true)
                ////    .Select(Projections.Count("ProductGroupModifierID"));
                //var count = session.CreateCriteria<ProductGroupModifier>()
                //    .Add(Restrictions.Eq("ShowAutomatically", true))
                //    .Add(Expression.Conjunction()
                //    .Add(Restrictions.Eq("ProductGroupID", productGroupID))
                //    .Add(Restrictions.IsNull("ProductGroupID")))
                //    .SetProjection(Projections.Count("ProductGroupModifierID")).UniqueResult();
                //return (int)count > 0;
            }
        }
    }
}