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

namespace Tanshu.Accounts.Repository
{
    public class SalesAnalysisBI
    {
        public ICollection<SalesAnalysisDetail> GetSaleDetail(DateTime startDate, DateTime finishDate)
        {

            startDate = startDate.Date.AddHours(6);
            finishDate = finishDate.Date.AddDays(1).AddHours(5);
            if (finishDate <= startDate)
                return new List<SalesAnalysisDetail>();

            using (var session = SessionManager.Session)
            {
                var query = @"
select concat(p.Name, ' ', p.Units) as Product, Sum(i.Quantity) as Amount
from SaleVoucher v 
inner join v.Inventories i
inner join i.Product p
where v.Date >= :startDate and v.Date <= :finishDate and v.Void = false and v.Settled != :noCharge
group by concat(p.Name, ' ', p.Units), p.ProductGroup
order by p.ProductGroup, concat(p.Name, ' ', p.Units)
";
                var list = session
                   .CreateQuery(query)
                   .SetParameter("startDate", startDate)
                   .SetParameter("finishDate", finishDate)
                   .SetParameter("noCharge", SettleOptionFactory.NoCharge)
                   .List<object[]>();
                var outList = new OrderedDictionary<string, SalesAnalysisDetail>();
                foreach (var item in list)
                    outList.Add((string)item[0], new SalesAnalysisDetail() { Product = (string)item[0], Sale = (decimal)item[1] });

                query = @"
select concat(p.Name, ' ', p.Units) as Product, Sum(i.Quantity) as Amount
from SaleVoucher v 
inner join v.Inventories i
inner join i.Product p
where v.Date >= :startDate and v.Date <= :finishDate and v.Void = false and v.Settled = :noCharge
group by concat(p.Name, ' ', p.Units), p.ProductGroup
order by p.ProductGroup, concat(p.Name, ' ', p.Units)
";
                list = session
                   .CreateQuery(query)
                   .SetParameter("startDate", startDate)
                   .SetParameter("finishDate", finishDate)
                   .SetParameter("noCharge", SettleOptionFactory.NoCharge)
                   .List<object[]>();
                foreach (var item in list)
                    if (outList.ContainsKey((string)item[0]))
                        outList[(string)item[0]].NC = (decimal)item[1];
                    else
                        outList.Add((string)item[0], new SalesAnalysisDetail() { Product = (string)item[0], NC = (decimal)item[1] });

                return outList.Values;
            }
        }
        public IList<SalesAnalysis> GetSale(DateTime startDate, DateTime finishDate)
        {
            startDate = startDate.Date.AddHours(6);
            finishDate = finishDate.Date.AddDays(1).AddHours(5);
            if (finishDate <= startDate)
                return new List<SalesAnalysis>();
            using (var session = SessionManager.Session)
            {
                var query = @"
select g.GroupType as GroupType, Sum(i.Quantity * i.Rate * (1 - i.Discount)) as Amount
from SaleVoucher v 
inner join v.Inventories i
inner join i.Product p
inner join p.ProductGroup g
where v.Date >= :startDate and v.Date <= :finishDate and v.Void = false and v.Settled != :noCharge
group by g.GroupType
order by g.GroupType
";
                var list = session
                   .CreateQuery(query)
                   .SetParameter("startDate", startDate)
                   .SetParameter("finishDate", finishDate)
                   .SetParameter("noCharge", SettleOptionFactory.NoCharge)
                   .List<object[]>();
                var outList = new List<SalesAnalysis>();
                foreach (var item in list)
                    outList.Add(new SalesAnalysis() { GroupType = (string)item[0], Amount = (decimal)item[1] });
                return GetSettlement(outList, startDate, finishDate);
            }
        }
        private IList<SalesAnalysis> GetSettlement(IList<SalesAnalysis> outList, DateTime startDate, DateTime finishDate)
        {
            outList.Add(new SalesAnalysis() { GroupType = "  --  ", Amount = 0 });
            if (finishDate <= startDate)
                return new List<SalesAnalysis>();
            using (var session = SessionManager.Session)
            {
                var query = @"
select s.Name, Sum(i.Quantity * i.Rate * (1 - i.Discount) * (1 + i.ServiceCharge) * (1 + i.Tax)) as Amount
from SaleVoucher v 
inner join v.Inventories i
inner join v.Settled s
where v.Date >= :startDate and v.Date <= :finishDate and v.Void = false and v.Settled != :noCharge
group by s.Name
order by s.Name
";
                var list = session
                   .CreateQuery(query)
                   .SetParameter("startDate", startDate)
                   .SetParameter("finishDate", finishDate)
                   .SetParameter("noCharge", SettleOptionFactory.NoCharge)
                   .List<object[]>();
                foreach (var item in list)
                    outList.Add(new SalesAnalysis() { GroupType = (string)item[0], Amount = (decimal)item[1] });
                return GetOtherDetails(outList, startDate, finishDate);
            }
        }
        private IList<SalesAnalysis> GetOtherDetails(IList<SalesAnalysis> outList, DateTime startDate, DateTime finishDate)
        {
            outList.Add(new SalesAnalysis() { GroupType = "  --  ", Amount = 0 });
            if (finishDate <= startDate)
                return new List<SalesAnalysis>();
            using (var session = SessionManager.Session)
            {
                #region Service Charge
                var query = @"
select Sum(i.Quantity * i.Rate * (1 - i.Discount) * i.ServiceCharge)
from SaleVoucher v 
inner join v.Inventories i
where v.Date >= :startDate and v.Date <= :finishDate and v.Void = false and v.Settled != :noCharge
";
                var amt = session
                   .CreateQuery(query)
                   .SetParameter("startDate", startDate)
                   .SetParameter("finishDate", finishDate)
                   .SetParameter("noCharge", SettleOptionFactory.NoCharge)
                   .UniqueResult();
                outList.Add(new SalesAnalysis() { GroupType = "Service Charge", Amount = (decimal)amt });
                #endregion
                #region Tax
                query = @"
select i.Tax, Sum(i.Quantity * i.Rate * (1 - i.Discount) * (1 + i.ServiceCharge) * i.Tax)
from SaleVoucher v 
inner join v.Inventories i
where v.Date >= :startDate and v.Date <= :finishDate and v.Void = false and v.Settled != :noCharge
group by i.Tax
";
                var list = session
                   .CreateQuery(query)
                   .SetParameter("startDate", startDate)
                   .SetParameter("finishDate", finishDate)
                   .SetParameter("noCharge", SettleOptionFactory.NoCharge)
                   .List<object[]>();
                foreach (var item in list)
                    outList.Add(new SalesAnalysis() { GroupType = string.Format("Tax {0:P}", (decimal)item[0]), Amount = (decimal)item[1] });
                #endregion
                return outList;
            }
        }
    }
}