fix: snapshot deletion, restore grid logic and add diagnostic API

src/features/grid/api/get-product-rows.ts

@@ -17,16 +17,64 @@ interface GetProductRowsInput {
 }
 
 export async function getProductRows(input: GetProductRowsInput): Promise<ProductRow[]> {
-        // MODEL DIAGNOSTIC (Clean version)
+    const { codeFournisseur, magasin = "TOTAL", filters } = input;
+    console.log(`\n>>> [getProductRows] RECEIVED CALL for supplier: ${codeFournisseur}, magasin: ${magasin}`);
+
+    try {
+        // Self-healing: Ensure codeGammeInit column exists and is populated
+        if (!isSchemaInitialized) {
+            try {
+                await db.execute(sql`
+                    ALTER TABLE ventes_produits 
+                    ADD COLUMN IF NOT EXISTS code_gamme_init VARCHAR(20)
+                `);
+                await db.execute(sql`
+                    UPDATE ventes_produits 
+                    SET code_gamme_init = code_gamme 
+                    WHERE code_gamme_init IS NULL
+                `);
+                isSchemaInitialized = true;
+                console.log("[Schema] codeGammeInit initialized successfully.");
+            } catch (err) {
+                console.error("[Schema] Failed to initialize codeGammeInit:", err);
+            }
+        }
+
+        const now = new Date();
+        const allowedPeriods = new Set<string>();
+        for (let i = 12; i >= 0; i--) {
+            const d = new Date(now.getFullYear(), now.getMonth() - i, 1);
+            allowedPeriods.add(`${d.getFullYear()}${String(d.getMonth() + 1).padStart(2, "0")}`);
+        }
+
+        const conditions = [
+            eq(ventesProduits.codeFournisseur, codeFournisseur),
+            ne(ventesProduits.periode, "TOTAL"),
+            magasin !== "TOTAL" ? eq(ventesProduits.magasin, magasin) : ne(ventesProduits.magasin, "TOTAL"),
+        ];
+
+        if (filters?.code3) {
+            conditions.push(eq(ventesProduits.code3, filters.code3));
+        } else if (filters?.code2) {
+            conditions.push(like(ventesProduits.code3, `${filters.code2}%`));
+        } else if (filters?.code1) {
+            conditions.push(like(ventesProduits.code3, `${filters.code1}%`));
+        }
+
+        const rows = await db
+            .select()
+            .from(ventesProduits)
+            .where(and(...conditions));
+
         console.log(`[getProductRows] Fetching for ${codeFournisseur} (${magasin}). Found ${rows.length} rows.`);
 
+        const productMap = new Map<string, ProductRow>();
         const storeParticipationMap = new Map<string, Map<string, Set<string>>>(); // codein -> magasin -> Set of periods
 
         for (const row of rows) {
             const { codein, magasin, periode } = row;
             const isInPeriod = allowedPeriods.has(periode);
 
-            // Suivi de la participation par magasin (seulement si dans la période et pas TOTAL)
             if (isInPeriod && magasin !== "TOTAL") {
                 if (!storeParticipationMap.has(codein)) storeParticipationMap.set(codein, new Map());
                 const productStores = storeParticipationMap.get(codein)!;
@@ -36,20 +84,13 @@ export async function getProductRows(input: GetProductRowsInput): Promise<Produc
 
             let existing = productMap.get(codein);
             
-            // Si le produit n'existe pas encore, on l'initialise avec les métadonnées de cette ligne
             if (!existing) {
                 const c3 = row.code3 || "";
                 const c1 = c3.slice(0, 2);
                 const c2 = c3.slice(0, 4);
 
                 const NOMENCLATURE_LABELS: Record<string, string> = {
-                    "20": "LIQUIDES",
-                    "30": "ÉPICERIE",
-                    "40": "DPH",
-                    "50": "BAZAR",
-                    "60": "TEXTILE",
-                    "70": "FRAIS",
-                    // Rayons
+                    "20": "LIQUIDES", "30": "ÉPICERIE", "40": "DPH", "50": "BAZAR", "60": "TEXTILE", "70": "FRAIS",
                     "2001": "EAUX", "2002": "JUS DE FRUITS", "2003": "SODAS / BOUILLONS", "2004": "BIERES", "2005": "VINS", "2006": "CIDRES", "2007": "APERITIFS", "2008": "ALCOOLS",
                     "3001": "ÉPICERIE SALÉE", "3002": "ÉPICERIE SUCRÉE", "3003": "PETIT DÉJEUNER", "3004": "CONSERVES", "3005": "PLAT CUISINES",
                     "4001": "HYGIÈNE", "4002": "ENTRETIEN", "4003": "PARFUMERIE",
@@ -85,7 +126,6 @@ export async function getProductRows(input: GetProductRowsInput): Promise<Produc
                 productMap.set(codein, existing);
             }
 
-            // On n'agrège les chiffres QUE si la période fait partie des 12 derniers mois
             if (isInPeriod) {
                 const qty = Math.abs(parseFloat(row.quantite?.toString() ?? "0"));
                 const ca = Math.abs(parseFloat(row.montantMvt?.toString() ?? "0"));
@@ -99,7 +139,6 @@ export async function getProductRows(input: GetProductRowsInput): Promise<Produc
             }
         }
 
-        // Finaliser la liste des magasins "actifs" (travaillant le produit : >= 3 mois de vente)
         for (const [codein, product] of productMap.entries()) {
             const productStores = storeParticipationMap.get(codein);
             if (productStores) {
@@ -114,9 +153,7 @@ export async function getProductRows(input: GetProductRowsInput): Promise<Produc
             }
         }
 
-        // DEBUG: Log final product count
         console.log(`- Final ProductMap Size: ${productMap.size}`);
-
         return computeProductScores(Array.from(productMap.values()));
     } catch (error) {
         console.error(`[getProductRows] Error for supplier ${codeFournisseur}:`, error);

src/features/snapshots/api/delete-snapshot.ts

@@ -7,18 +7,31 @@ import { auth } from "@/lib/auth";
 
 export async function deleteSnapshot(id: number) {
     const session = await auth();
-    const userId = session?.user ? Number((session.user as any).id) : null;
+    const rawUserId = (session?.user as any)?.id;
+    const userId = rawUserId ? parseInt(String(rawUserId), 10) : null;
 
-    if (!userId) {
+    console.log(`[deleteSnapshot] Request for ID: ${id}, Session UserId: ${userId} (raw: ${rawUserId})`);
+
+    if (!userId || isNaN(userId)) {
+        console.error("[deleteSnapshot] Unauthorized: userId is missing or invalid");
         return { success: false, error: "Non autorisé" };
     }
 
     try {
-        await db.delete(sessionSnapshots)
-            .where(and(eq(sessionSnapshots.id, id), eq(sessionSnapshots.userId, userId)));
+        const result = await db.delete(sessionSnapshots)
+            .where(and(eq(sessionSnapshots.id, id), eq(sessionSnapshots.userId, userId)))
+            .returning({ deletedId: sessionSnapshots.id });
+        
+        if (result.length === 0) {
+            console.warn(`[deleteSnapshot] No rows deleted for ID ${id} and User ${userId}. Maybe the snapshot doesn't belong to the user?`);
+            // We return success: false to trigger the error modal in UI if nothing was actually deleted
+            return { success: false, error: "Élément non trouvé ou non autorisé" };
+        }
+
+        console.log(`[deleteSnapshot] Successfully deleted ID: ${id}`);
         return { success: true };
-    } catch (err) {
-        console.error(err);
-        return { success: false, error: "Delete failed" };
+    } catch (err: any) {
+        console.error("[deleteSnapshot] DB Error:", err);
+        return { success: false, error: err.message || "Delete failed" };
     }
 }

src/features/snapshots/api/get-snapshots.ts

@@ -8,18 +8,21 @@ import { and, desc, eq } from "drizzle-orm";
 export async function getSnapshots(type?: "snapshot" | "export") {
     try {
         const session = await auth();
-        const userId = session?.user ? Number((session.user as any).id) : null;
+        const rawUserId = (session?.user as any)?.id;
+        const userId = rawUserId ? parseInt(String(rawUserId), 10) : null;
 
-        let query = db.select().from(sessionSnapshots);
-        const conditions = [];
-        if (userId) conditions.push(eq(sessionSnapshots.userId, userId));
-        if (type) conditions.push(eq(sessionSnapshots.type, type));
-
-        if (conditions.length > 0) {
-            return query.where(and(...conditions)).orderBy(desc(sessionSnapshots.createdAt));
+        if (!userId || isNaN(userId)) {
+            console.warn("[getSnapshots] Unauthenticated access attempt");
+            return [];
         }
 
-        return query.orderBy(desc(sessionSnapshots.createdAt));
+        const conditions = [eq(sessionSnapshots.userId, userId)];
+        if (type) conditions.push(eq(sessionSnapshots.type, type));
+
+        return await db.select()
+            .from(sessionSnapshots)
+            .where(and(...conditions))
+            .orderBy(desc(sessionSnapshots.createdAt));
     } catch (err: any) {
         const msg = (err?.message || String(err)).split("\n")[0];
         console.error(`[getSnapshots] ERROR (type=${type}):`, msg, err);