public HttpResponseMessage AddPurchaseRequestItem(Entities.TrnPurchaseRequestItem objPurchaseRequestItem, String PRId)
        {
            try
            {
                var currentUser = from d in db.MstUsers
                                  where d.UserId == User.Identity.GetUserId()
                                  select d;

                if (currentUser.Any())
                {
                    var currentUserId = currentUser.FirstOrDefault().Id;

                    var userForms = from d in db.MstUserForms
                                    where d.UserId == currentUserId &&
                                    d.SysForm.FormName.Equals("PurchaseRequestDetail")
                                    select d;

                    if (userForms.Any())
                    {
                        if (userForms.FirstOrDefault().CanAdd)
                        {
                            var purchaseRequest = from d in db.TrnPurchaseRequests
                                                  where d.Id == Convert.ToInt32(PRId)
                                                  select d;

                            if (purchaseRequest.Any())
                            {
                                if (!purchaseRequest.FirstOrDefault().IsLocked)
                                {
                                    var item = from d in db.MstArticles
                                               where d.Id == objPurchaseRequestItem.ItemId &&
                                               d.ArticleTypeId == 1 &&
                                               d.IsLocked == true
                                               select d;

                                    if (item.Any())
                                    {
                                        var conversionUnit = from d in db.MstArticleUnits
                                                             where d.ArticleId == objPurchaseRequestItem.ItemId &&
                                                             d.UnitId == objPurchaseRequestItem.UnitId &&
                                                             d.MstArticle.IsLocked == true
                                                             select d;

                                        if (conversionUnit.Any())
                                        {
                                            Decimal baseQuantity = objPurchaseRequestItem.Quantity * 1;
                                            if (conversionUnit.FirstOrDefault().Multiplier > 0)
                                            {
                                                baseQuantity = objPurchaseRequestItem.Quantity * (1 / conversionUnit.FirstOrDefault().Multiplier);
                                            }

                                            Decimal baseCost = objPurchaseRequestItem.Amount;
                                            if (baseQuantity > 0)
                                            {
                                                baseCost = objPurchaseRequestItem.Amount / baseQuantity;
                                            }

                                            Data.TrnPurchaseRequestItem newPurchaseRequestItem = new Data.TrnPurchaseRequestItem
                                            {
                                                PRId         = objPurchaseRequestItem.PRId,
                                                ItemId       = objPurchaseRequestItem.ItemId,
                                                Particulars  = objPurchaseRequestItem.Particulars,
                                                UnitId       = objPurchaseRequestItem.UnitId,
                                                Quantity     = objPurchaseRequestItem.Quantity,
                                                Cost         = objPurchaseRequestItem.Cost,
                                                Amount       = objPurchaseRequestItem.Amount,
                                                BaseUnitId   = item.FirstOrDefault().UnitId,
                                                BaseQuantity = baseQuantity,
                                                BaseCost     = baseCost
                                            };

                                            db.TrnPurchaseRequestItems.InsertOnSubmit(newPurchaseRequestItem);
                                            db.SubmitChanges();

                                            return(Request.CreateResponse(HttpStatusCode.OK));
                                        }
                                        else
                                        {
                                            return(Request.CreateResponse(HttpStatusCode.BadRequest, "The selected item has no unit conversion."));
                                        }
                                    }
                                    else
                                    {
                                        return(Request.CreateResponse(HttpStatusCode.BadRequest, "The selected item was not found in the server."));
                                    }
                                }
                                else
                                {
                                    return(Request.CreateResponse(HttpStatusCode.BadRequest, "You cannot add new purchase request item if the current purchase request detail is locked."));
                                }
                            }
                            else
                            {
                                return(Request.CreateResponse(HttpStatusCode.NotFound, "These current purchase request details are not found in the server. Please add new purchase request first before proceeding."));
                            }
                        }
                        else
                        {
                            return(Request.CreateResponse(HttpStatusCode.BadRequest, "Sorry. You have no rights to add new purchase request item in this purchase request detail page."));
                        }
                    }
                    else
                    {
                        return(Request.CreateResponse(HttpStatusCode.BadRequest, "Sorry. You have no access in this purchase request detail page."));
                    }
                }
                else
                {
                    return(Request.CreateResponse(HttpStatusCode.BadRequest, "Theres no current user logged in."));
                }
            }
            catch (Exception e)
            {
                Debug.WriteLine(e);
                return(Request.CreateResponse(HttpStatusCode.InternalServerError, "Something's went wrong from the server."));
            }
        }
        public HttpResponseMessage ApplyPurchaseRequestConsignment(List <Entities.TrnSalesInvoiceItem> objItems, String PRId)
        {
            try
            {
                var currentUser = from d in db.MstUsers where d.UserId == User.Identity.GetUserId() select d;
                if (currentUser.Any())
                {
                    var currentUserId   = currentUser.FirstOrDefault().Id;
                    var currentBranchId = currentUser.FirstOrDefault().BranchId;

                    IQueryable <Data.MstUserForm>        userForms       = from d in db.MstUserForms where d.UserId == currentUserId && d.SysForm.FormName.Equals("PurchaseRequestDetail") select d;
                    IQueryable <Data.TrnPurchaseRequest> purchaseRequest = from d in db.TrnPurchaseRequests where d.Id == Convert.ToInt32(PRId) select d;

                    Boolean isValid       = false;
                    String  returnMessage = "";

                    if (!userForms.Any())
                    {
                        returnMessage = "Sorry. You have no access in this purchase request detail page.";
                    }
                    else if (!userForms.FirstOrDefault().CanAdd)
                    {
                        returnMessage = "Sorry. You have no rights to add new purchase request item in this purchase request detail page.";
                    }
                    else if (!purchaseRequest.Any())
                    {
                        returnMessage = "These current purchase request details are not found in the server. Please add new purchase request first before proceeding.";
                    }
                    else if (purchaseRequest.FirstOrDefault().IsLocked)
                    {
                        returnMessage = "You cannot apply consignment items to purchase request item if the current purchase request detail is locked.";
                    }
                    else if (!objItems.Any())
                    {
                        returnMessage = "There are no consignment items.";
                    }
                    else
                    {
                        isValid = true;
                    }

                    if (isValid)
                    {
                        String newObject = "[";
                        Int32  count     = 0;

                        foreach (var objItem in objItems)
                        {
                            count += 1;

                            var item = from d in db.MstArticles
                                       where d.Id == objItem.ItemId &&
                                       d.ArticleTypeId == 1 &&
                                       d.IsLocked == true
                                       select d;

                            if (item.Any())
                            {
                                var conversionUnit = from d in db.MstArticleUnits
                                                     where d.ArticleId == objItem.ItemId &&
                                                     d.UnitId == objItem.UnitId &&
                                                     d.MstArticle.IsLocked == true
                                                     select d;

                                if (conversionUnit.Any())
                                {
                                    Decimal baseQuantity = objItem.Quantity * 1;
                                    if (conversionUnit.FirstOrDefault().Multiplier > 0)
                                    {
                                        baseQuantity = objItem.Quantity * (1 / conversionUnit.FirstOrDefault().Multiplier);
                                    }

                                    Decimal baseCost = objItem.Amount;
                                    if (baseQuantity > 0)
                                    {
                                        baseCost = objItem.Amount / baseQuantity;
                                    }

                                    Data.TrnPurchaseRequestItem newPurchaseRequestItem = new Data.TrnPurchaseRequestItem
                                    {
                                        PRId         = Convert.ToInt32(PRId),
                                        ItemId       = objItem.ItemId,
                                        Particulars  = "Consignment Item",
                                        UnitId       = objItem.UnitId,
                                        Quantity     = objItem.Quantity,
                                        Cost         = objItem.Cost,
                                        Amount       = objItem.Amount,
                                        BaseUnitId   = item.FirstOrDefault().UnitId,
                                        BaseQuantity = baseQuantity,
                                        BaseCost     = baseCost
                                    };

                                    db.TrnPurchaseRequestItems.InsertOnSubmit(newPurchaseRequestItem);

                                    if (objItems.Count() == 1)
                                    {
                                        newObject += auditTrail.GetObjectString(newPurchaseRequestItem);
                                    }
                                    else
                                    {
                                        if (count == objItems.Count())
                                        {
                                            newObject += auditTrail.GetObjectString(newPurchaseRequestItem);
                                        }
                                        else
                                        {
                                            newObject += auditTrail.GetObjectString(newPurchaseRequestItem) + ", ";
                                        }
                                    }
                                }
                            }
                        }

                        db.SubmitChanges();

                        newObject += "]";
                        auditTrail.InsertAuditTrail(currentUser.FirstOrDefault().Id, GetType().Name, MethodBase.GetCurrentMethod().Name, "NA", newObject);

                        return(Request.CreateResponse(HttpStatusCode.OK));
                    }
                    else
                    {
                        return(Request.CreateResponse(HttpStatusCode.NotFound, returnMessage));
                    }
                }
                else
                {
                    return(Request.CreateResponse(HttpStatusCode.BadRequest, "Theres no current user logged in."));
                }
            }
            catch (Exception e)
            {
                Debug.WriteLine(e);
                return(Request.CreateResponse(HttpStatusCode.InternalServerError, "Something's went wrong from the server."));
            }
        }