Checkpoint: Ajout de la table deletedInvoices (blacklist) : quand une facture est supprimée, son numéro est enregistré et l'import email/fichier ne la réimporte plus.

server/db.ts

@@ -44,7 +44,10 @@ import {
   BapHistory,
   invoiceLearnings,
   InsertInvoiceLearning,
-  InvoiceLearning
+  InvoiceLearning,
+  deletedInvoices,
+  InsertDeletedInvoice,
+  DeletedInvoice
 } from "../drizzle/schema";
 import { ENV } from './_core/env';
 
@@ -265,9 +268,33 @@ export async function updateInvoice(id: number, data: Partial<Invoice>) {
 export async function deleteInvoice(id: number) {
   const db = await getDb();
   if (!db) throw new Error("Database not available");
+  // Enregistrer dans la blacklist avant suppression
+  const invoice = await db.select().from(invoices).where(eq(invoices.id, id)).limit(1);
+  if (invoice[0] && invoice[0].invoiceNumber) {
+    await db.insert(deletedInvoices).values({
+      userId: invoice[0].userId,
+      invoiceNumber: invoice[0].invoiceNumber,
+      totalAmount: invoice[0].totalAmount ?? undefined,
+      supplierName: invoice[0].supplierName ?? undefined,
+    }).onDuplicateKeyUpdate({ set: { deletedAt: new Date() } });
+  }
   await db.delete(invoices).where(eq(invoices.id, id));
 }
 
+/** Vérifie si une facture est dans la blacklist (supprimée manuellement) */
+export async function isInvoiceBlacklisted(
+  invoiceNumber: string | null,
+  userId: number
+): Promise<boolean> {
+  if (!invoiceNumber) return false;
+  const db = await getDb();
+  if (!db) return false;
+  const result = await db.select().from(deletedInvoices)
+    .where(and(eq(deletedInvoices.userId, userId), eq(deletedInvoices.invoiceNumber, invoiceNumber)))
+    .limit(1);
+  return result.length > 0;
+}
+
 export async function searchInvoices(userId: number | null, query: string): Promise<Invoice[]> {
   const db = await getDb();
   if (!db) return [];