// POST api/<controller>
        public async Task <long> Post(POViewModel value)
        {
            const long PurchaserHead = 6;
            var        nhpos         = new NHibernatePOStore();
            var        nhus          = new NHibernateUserStore();
            var        company       = new NHibernateCompanyStore();
            var        po            = await nhpos.FindPOAByIdAsync(value.Id);

            var user = await nhus.FindByStampAsync(value.SecurityStamp);

            foreach (var line in value.Lines)
            {
                var nhps   = new NHibernatePRStore();
                var poLine = new POLinesModel()
                {
                    Quantity    = line.Quantity,
                    UOM         = line.UOM,
                    Description = line.Description,
                    UnitPrice   = line.UnitPrice,
                    PRLine      = await nhps.GetPRLineAsync(line.PRLineId),
                    Name        = line.Name,
                    CreatedBy   = user
                };
                po.Lines.Add(poLine);
            }
            po.Status = value.Status;
            if (value.Status == StatusType.ForApproval)
            {
                var approver = new POAprovalModel()
                {
                    Approver = await company.GetPositionByIdAsync(PurchaserHead),
                    Status   = StatusType.ForApproval
                };
                po.Approvals = new List <POAprovalModel>();
                po.Approvals.Add(approver);
                var costApprover = company.FindCostApprover(po.Amount);
                if (costApprover.Result != null)
                {
                    var approver2 = new POAprovalModel()
                    {
                        Approver = costApprover.Result.Approver,
                        Status   = StatusType.ForApproval
                    };
                    po.Approvals.Add(approver2);
                }
            }
            await nhpos.SaveOrUpdatePOHeaderAsync(po);

            return(value.Id);
        }
        // POST api/<controller>
        public async Task <string> Post(POViewModel value)
        {
            const long PurchaserHead = 6;
            var        nhss          = new NHibernateISupplierStore();
            var        nhcs          = new NHibernateCompanyStore();
            var        nhpos         = new NHibernatePOStore();
            var        nhus          = new NHibernateUserStore();
            var        company       = new NHibernateCompanyStore();
            var        requierDate   = value.RequiredDate < DateTime.UtcNow ? DateTime.UtcNow.AddDays(6) : value.RequiredDate;
            var        user          = await nhus.FindByStampAsync(value.SecurityStamp);

            var requestor = await nhcs.GetEmployeeAsync(value.RequestorId);

            var po = await nhpos.FindPOAByIdAsync(value.Id);

            if (po == null)
            {
                po = new POHeaderModel()
                {
                    Supplier       = await nhss.FindSupplierByIdAsync(value.SupplierId),
                    PaymentTerm    = value.PaymentTerm,
                    Requestor      = requestor,
                    DeliveryAdress = value.DeliveryAdress,
                    Status         = value.Status,
                    RequiredDate   = requierDate,
                    NoteToBuyer    = value.NoteToBuyer,
                    CreatedBy      = user,
                    Amount         = value.Amount,
                    CRC            = requestor.Team.CRC,
                    Lines          = new List <POLinesModel>()
                };
                foreach (var line in value.Lines)
                {
                    var nhps   = new NHibernatePRStore();
                    var poLine = new POLinesModel()
                    {
                        Quantity    = line.Quantity,
                        UOM         = line.UOM,
                        Description = line.Description,
                        UnitPrice   = line.UnitPrice,
                        PRLine      = await nhps.GetPRLineAsync(line.PRLineId),
                        Name        = line.Name,
                        CreatedBy   = user
                    };
                    po.Lines.Add(poLine);
                }
            }
            else
            {
                po.Requestor = await nhcs.GetEmployeeAsync(value.RequestorId);

                po.DeliveryAdress = value.DeliveryAdress;
                po.Amount         = value.Amount;
                for (var i = 0; i < po.Lines.Count; i++)
                {
                    var found = false;
                    var id    = po.Lines.ElementAt(i).Id;
                    foreach (var line in value.Lines)
                    {
                        if (line.Id == id)
                        {
                            found = true;
                            po.Lines.ElementAt(i).Quantity    = line.Quantity;
                            po.Lines.ElementAt(i).UOM         = line.UOM;
                            po.Lines.ElementAt(i).Description = line.Description;
                            po.Lines.ElementAt(i).UnitPrice   = line.UnitPrice;
                            break;
                        }
                    }
                    if (found == false)
                    {
                        po.Lines.ElementAt(i).DeleteTime = DateTime.UtcNow;
                    }
                }
            }
            if (value.Status == StatusType.ForApproval)
            {
                var approver = new POAprovalModel()
                {
                    Approver = await company.GetPositionByIdAsync(PurchaserHead),
                    Status   = StatusType.ForApproval
                };
                po.Approvals = new List <POAprovalModel>();
                po.Approvals.Add(approver);
                var costApprover = company.FindCostApprover(po.Amount);
                if (costApprover.Result != null)
                {
                    var approver2 = new POAprovalModel()
                    {
                        Approver = costApprover.Result.Approver,
                        Status   = StatusType.ForApproval
                    };
                    po.Approvals.Add(approver2);
                }
            }

            try {
                await nhpos.SaveOrUpdatePOHeaderAsync(po);
            } catch (Exception e) {
            }
            return(po.RequisitionNo);
        }