Gestion de bons à valoir dans la gestion commerciale

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Linq;
using MercatorApi;
using MercatorUi;
using MercatorExtensions;

namespace Billing
{
    public class Customizer : MercatorUi.ICustomizers.IBillingEngineCreated, MercatorUi.ICustomizers.IBillingEngineClosed
    {
        public void BillingEngineCreated(MercatorUi.Engine.Gescom.BillingEngine BillingEngine)
        {
            BillingEngine.AfterInsertItem += AfterInsertItem;
            BillingEngine.BeforeBeforePaymentOrSave += BeforeBeforePaymentOrSave;
            BillingEngine.AfterSave += AfterSave;
        }

        public void BillingEngineClosed(MercatorUi.Engine.Gescom.BillingEngine BillingEngine)
        {
            BillingEngine.AfterInsertItem -= AfterInsertItem;
            BillingEngine.BeforeBeforePaymentOrSave -= BeforeBeforePaymentOrSave;
            BillingEngine.AfterSave -= AfterSave;
        }

        void AfterInsertItem(object sender, MercatorUi.Engine.Gescom.BillingEngine.AfterInsertItemEventArgs e)
        {
            MercatorUi.Engine.Gescom.BillingEngine billingEngine = (MercatorUi.Engine.Gescom.BillingEngine)sender;
            if (e.LignesVRecord.S_CLE1 == "UTILBONVAL")
            {
                string id_bonval = Dialogs.AskString("Veuillez scanner le code barre", "", true, 35);
                if (!string.IsNullOrWhiteSpace(id_bonval))
                {
                    id_bonval = id_bonval.TrimEnd();
                    int nbBon = billingEngine.LignesVRecords.Where(l => l.ID_BONVAL == id_bonval).Count();
                    if (nbBon == 0)
                    {
                        string reqSql = "select count(*) as nbUtil, sum(q) as q, sum(pu) as pu from lignes_v where id_bonval=@id_bonval";
                        DataSet ds = Api.Zselect(Globals.RepData, reqSql, new MercatorSqlParam("@id_bonval", id_bonval, SqlDbType.Char));
                        if (ds != null)
                        {
                            if (ds.Tables[0].Rows[0].Value<Int16>("nbUtil") == 0)
                            {
                                Dialogs.Stop("Ce bon à valoir n'existe pas !");
                                e.CancelInsertItem = true;
                            }
                            else if (ds.Tables[0].Rows[0].Value<Int16>("nbUtil") > 1)
                            {
                                Dialogs.Stop("Ce bon à valoir a déjà été utilisé !");
                                e.CancelInsertItem = true;
                            }
                            else
                            {
                                e.LignesVRecord.Q = ds.Tables[0].Rows[0].Value<double>("q") * -1;
                                e.LignesVRecord.PU = ds.Tables[0].Rows[0].Value<double>("pu");
                                e.LignesVRecord.ID_BONVAL = id_bonval;
                            }
                        }
                        else
                        {
                            e.CancelInsertItem = true;
                        }
                    }
                    else
                    {
                        Dialogs.Stop("Ce bon à valoir a déjà été utilisé au sein de cette vente !");
                        e.CancelInsertItem = true;
                    }
                }
                else
                {
                    Dialogs.Stop("Code-Barres Vide !");
                    e.CancelInsertItem = true;
                }
            }
        }

        private void BeforeBeforePaymentOrSave(object sender, MercatorUi.Engine.Gescom.BillingEngine.BeforeBeforePaymentOrSaveEventArgs e)
        {
            MercatorUi.Engine.Gescom.BillingEngine billingEngine = (MercatorUi.Engine.Gescom.BillingEngine)sender;
            if (billingEngine.PiedsVRecord.TOT_TTC_FB.CompareTo(0, Globals.DEC_DEV_B) < 0)
            {
                MercatorUi.Sig.Sig sigStock = MercatorUi.Sig._SigsStatic.SigByModule(MercatorUi.Sig._SigEnum.STOCK);
                string reqSql = string.Format("select {0} from stock (NOLOCK) where s_cle1 ='BONVAL'", sigStock.FieldsListForSelectRtrimNoBytes);
                DataSet dsStock = Api.Zselect(Globals.RepData, reqSql);
                if ((dsStock == null) || (dsStock.Tables[0].Rows.Count == 0))
                {
                    Dialogs.Stop("Article non trouvé !");
                }
                else
                {
                    int nLigne = billingEngine.AppendLine();
                    if (nLigne < 0)
                    {
                        Dialogs.Stop("AppendLine BillingEngine : " + billingEngine.LastError + (Api.LastError == "" ? " - " + Api.LastError : ""));
                    }
                    else if (!billingEngine.InsertItem(dsStock.Tables[0].Rows[0], billingEngine.LIGNES.Rows[nLigne]))
                    {
                        Dialogs.Stop("InsertItem BillingEngine : " + billingEngine.LastError + (Api.LastError == "" ? " - " + Api.LastError : ""));
                    }
                    else
                    {
                        billingEngine.LignesVRecords[nLigne].PU = Math.Abs(billingEngine.PiedsVRecord.TOT_TTC_FB);
                        billingEngine.LignesVRecords[nLigne].ID_BONVAL = billingEngine.PiedsVRecord.ID + billingEngine.LignesVRecords[nLigne].DL_ID;
                        billingEngine.UpdateAmounts();
                    }
                }
            }
        }

        void AfterSave(object sender, EventArgs e)
        {
            MercatorUi.Engine.Gescom.BillingEngine billingEngine = (MercatorUi.Engine.Gescom.BillingEngine)sender;
            if (billingEngine.LignesVRecords.Where(l => l.S_CLE1 == "BONVAL").Count() != 0)
            {
                DataSet ds;
                foreach (DataRow drBC in billingEngine.LIGNES.Select("S_CLE1='BONVAL'"))
                {
                    ds = new DataSet();
                    DataTable dt_lignes = billingEngine.LIGNES.Clone();
                    dt_lignes.ImportRow(drBC);
                    DataTable dt_pieds = billingEngine.PIEDS.Table.Clone();
                    dt_pieds.ImportRow(billingEngine.PIEDS);
                    ds.Tables.Add(dt_lignes);
                    ds.Tables.Add(dt_pieds);
                    ds.Tables.Add(Api.DataTableFromDico(MercatorUi.Globals.ParamIdentif, "ParamIdentif"));

                    /* Edit Layout
                    //string reportFileName = Globals.MainDir + "BonValoir.repx";
                    string reportFileName = @"<MainDir\BonValoir.repx";
                    string reportLayout = MercatorUi.Reporting.ReportingStatic.Reporting.EditLayout(Api.JustStem(reportFileName), Api.FileToStr(reportFileName, Encoding.UTF8), ds);
                    Api.StrToFile(reportLayout, reportFileName, Encoding.UTF8);
                    */
                    List<MercatorUi.Reporting.OutputDescriptor> listOutputDescriptors = new List<MercatorUi.Reporting.OutputDescriptor>();
                    // Preview
                    //listOutputDescriptors.Add(new MercatorUi.Reporting.OutputDescriptorPreview ());
                    //
                    listOutputDescriptors.Add(new MercatorUi.Reporting.OutputDescriptorPrint());
                    //MercatorUi.Reporting.ReportingStatic.Reporting.RunReport("BonValoir", Globals.MainDir + "BonValoir.repx", ds, listOutputDescriptors);
                    MercatorUi.Reporting.ReportingStatic.Reporting.RunReport("BonValoir", @"<MainDir\BonValoir.repx", ds, listOutputDescriptors);
                }
            }
        }
    }
}