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

namespace Tanshu.Accounts.Repository
{
    public class SaleVoucherBI
    {
        public BillInventory GetDefaultSaleBillItem(int productID)
        {
            Product product;
            using (var session = SessionManager.Session)
            {
                product = session.Get<Product>(productID);
            }
            return new BillInventory()
            {
                ProductID = product.ProductID,
                Name = product.Name + " (" + product.Units + ")",
                Price = product.SalePrice,
                Tax = product.Tax.Rate,
                ServiceCharge = product.ServiceCharge,
                Discount = 0,
                Printed = 0,
                Quantity = 1,
            };

        }
        public decimal GetProductDiscountLimit(int productID)
        {
            using (var session = SessionManager.Session)
            {
                return session.Get<Product>(productID).ProductGroup.DiscountLimit;
            }
        }
        public bool IsBillPrinted(int voucherID)
        {
            using (var session = SessionManager.Session)
            {
                return session.Get<SaleVoucher>(voucherID).Printed;
            }
        }
        public bool Insert(SaleVoucher saleVoucher, IList<Inventory> inventory)
        {
            using (var session = SessionManager.Session)
            {
                using (var trans = session.BeginTransaction())
                {
                    DateTime dt = DbValues.Date;
                    saleVoucher.CreationDate = dt;
                    saleVoucher.LastEditDate = dt;
                    saleVoucher.Date = dt;
                    saleVoucher.KotID = DbValues.KotID;
                    if (saleVoucher.Printed)
                        saleVoucher.BillID = DbValues.BillID;
                    else
                        saleVoucher.BillID = saleVoucher.KotID;
                    session.Save(saleVoucher);
                    foreach (var item in inventory)
                    {
                        item.Voucher = saleVoucher;
                        session.Save(item);
                    }
                    trans.Commit();
                    return true;
                }
            }
        }
        public bool Update(SaleVoucher saleVoucher, IList<Inventory> inventory)
        {
            using (var session = SessionManager.Session)
            {
                using (var trans = session.BeginTransaction())
                {
                    DateTime dt = DbValues.Date;
                    saleVoucher.LastEditDate = dt;
                    saleVoucher.Inventories = inventory;
                    if (saleVoucher.Date == null)
                    {
                        saleVoucher.Date = dt;
                        saleVoucher.BillID = DbValues.BillID;
                    }
                    if (!saleVoucher.Printed)
                        saleVoucher.Date = dt;
                    foreach (var item in inventory)
                    {
                        item.Voucher = saleVoucher;
                        session.Save(item);
                    }
                    session.Merge(saleVoucher);

                    trans.Commit();
                    return true;
                }
            }
        }
        public bool GetSaleVoucher(int voucherID, out SaleVoucher saleVoucher, out IList<Inventory> iList)
        {
            using (var session = SessionManager.Session)
            {
                saleVoucher = session.Get<SaleVoucher>(voucherID);
                iList = saleVoucher.Inventories;
                return true;
            }
        }

        //public List<PendingBillsBO> GetPendingBills(PendingType list)
        //{
        //    GetFactory factory = GetFactory.GetDAOFactory(Database.GetFactoryType);
        //    using (IConnectionDAO connection = factory.Connection)
        //    {
        //        using (ISaleVoucherMixDAO dao = factory.GetSaleVoucherMixDAO(connection))
        //        {
        //            return dao.GetPendingBills(list);
        //        }
        //    }
        //}

        public SaleVoucher GetPendingVoucherID(string tableID)
        {
            using (var session = SessionManager.Session)
            {
                return (from v in session.QueryOver<SaleVoucher>()
                        where v.Void == false && v.TableID == tableID && v.Settled.SettleOptionID == SettleOptionFactory.Unsettled
                        select v).SingleOrDefault();
            }
        }
        //public List<InventoryBO> SaleInventory(Dictionary<BillItemKey, BillInventoryBO>.ValueCollection list, Guid? voucherID)
        //{
        //    GetFactory factory = GetFactory.GetDAOFactory(Database.GetFactoryType);
        //    using (IConnectionDAO connection = factory.Connection)
        //    {
        //        using (ISaleVoucherMixDAO dao = factory.GetSaleVoucherMixDAO(connection))
        //        {
        //            return dao.SaleInventory(list, voucherID);
        //        }
        //    }
        //}
        //public void GetComplexBillInformation(Guid voucherID, Guid complexProductID, ref decimal rate, ref decimal quantity, ref string name)
        //{
        //    GetFactory factory = GetFactory.GetDAOFactory(Database.GetFactoryType);
        //    using (IConnectionDAO connection = factory.Connection)
        //    {
        //        using (ISaleVoucherMixDAO dao = factory.GetSaleVoucherMixDAO(connection))
        //        {
        //            dao.GetComplexBillInformation(voucherID, complexProductID, ref rate, ref quantity, ref name);
        //        }
        //    }
        //}
        //public void SetAlarm(Guid voucherID, DateTime? alarmTime)
        //{
        //    GetFactory factory = GetFactory.GetDAOFactory(Database.GetFactoryType);
        //    using (IConnectionDAO connection = factory.Connection)
        //    {
        //        using (ISaleVoucherDAO dao = factory.GetSaleVoucherDAO(connection))
        //        {
        //            dao.SetAlarm(voucherID, alarmTime);
        //        }
        //    }
        //}
        public void VoidBill(int voucherID, string reason)
        {
            using (var session = SessionManager.Session)
            {
                using (var trans = session.BeginTransaction())
                {
                    var saleVoucher = session.Get<SaleVoucher>(voucherID);
                    saleVoucher.Void = true;
                    saleVoucher.VoidReason = reason;
                    session.Save(saleVoucher);
                    trans.Commit();
                }
            }
        }

        public void SettleVoucher(User user, int voucherID, int settleOption)
        {
            using (var session = SessionManager.Session)
            {
                using (var trans = session.BeginTransaction())
                {
                    var saleVoucher = session.Get<SaleVoucher>(voucherID);
                    saleVoucher.Settled = SettleOptionBI.GetSettleOption(settleOption);
                    saleVoucher.User = user;
                    saleVoucher.LastEditDate = DbValues.Date;
                    session.Merge(saleVoucher);
                    trans.Commit();
                }
            }
        }
    }
}