feat(export): export modified gammes to excel with specified columns

src/app/api/export/modified-gammes/route.ts

@@ -0,0 +1,75 @@
+import { NextRequest, NextResponse } from "next/server";
+import ExcelJS from "exceljs";
+import { z } from "zod";
+
+const ExportModifiedGammesSchema = z.object({
+    nomFournisseur: z.string(),
+    changes: z.array(z.object({
+        codein: z.string(),
+        gtin: z.string(),
+        gamme: z.string(),
+    })),
+});
+
+export async function POST(req: NextRequest) {
+    const body = await req.json();
+    const parsed = ExportModifiedGammesSchema.safeParse(body);
+    if (!parsed.success) {
+        return NextResponse.json({ error: "Invalid payload" }, { status: 400 });
+    }
+
+    const { nomFournisseur, changes } = parsed.data;
+    const workbook = new ExcelJS.Workbook();
+    workbook.creator = "CollectFlow";
+    workbook.created = new Date();
+
+    const sheet = workbook.addWorksheet("Gammes Modifiées", {
+        views: [{ state: "frozen", ySplit: 1 }],
+    });
+
+    // Header style
+    const headerStyle: Partial<ExcelJS.Style> = {
+        font: { bold: true, color: { argb: "FFFFFFFF" } },
+        fill: { type: "pattern", pattern: "solid", fgColor: { argb: "FF0F172A" } },
+        alignment: { horizontal: "center" },
+        border: { bottom: { style: "thin", color: { argb: "FF334155" } } },
+    };
+
+    sheet.columns = [
+        { header: "CODE FOURNISSEUR", key: "codein", width: 22 },
+        { header: "GENCOD", key: "gtin", width: 18 },
+        { header: "GAMME", key: "gamme", width: 12 },
+    ];
+
+    // Apply header style
+    sheet.getRow(1).eachCell((cell) => { Object.assign(cell, headerStyle); });
+    sheet.getRow(1).height = 22;
+
+    for (const row of changes) {
+        sheet.addRow({
+            codein: row.codein,
+            gtin: row.gtin || "—",
+            gamme: row.gamme || "—",
+        });
+    }
+
+    // Centrer la colonne Gamme
+    const gammeCol = sheet.getColumn("gamme");
+    gammeCol.alignment = { horizontal: "center" };
+
+    // Format codein et gtin en texte pour eviter la notation scientifique excel
+    sheet.getColumn("codein").numFmt = "@";
+    sheet.getColumn("gtin").numFmt = "@";
+
+    // Generate buffer
+    const buffer = await workbook.xlsx.writeBuffer();
+
+    const filename = `Modifications_Gammes_${nomFournisseur.replace(/\s+/g, "_")}_${new Date().toISOString().slice(0, 10)}.xlsx`;
+
+    return new NextResponse(buffer, {
+        headers: {
+            "Content-Type": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+            "Content-Disposition": `attachment; filename="${filename}"`,
+        },
+    });
+}

src/features/grid/components/floating-summary-bar.tsx

@@ -49,8 +49,46 @@ export function FloatingSummaryBar() {
                 />
             </div>
 
-            <div className="flex space-x-3">
+            <div className="flex space-x-3 items-center">
                 <button
+                    onClick={async () => {
+                        if (!hasDrafts) {
+                            alert("Aucune gamme n'a été modifiée. L'export Excel ne concerne que les modifications en cours.");
+                            return;
+                        }
+
+                        // Prepare payload
+                        const modifiedRows = useGridStore.getState().rows.filter(r => draftChanges[r.codein]);
+                        const changes = modifiedRows.map(r => ({
+                            codein: r.codein,
+                            gtin: r.gtin,
+                            gamme: draftChanges[r.codein] as string,
+                        }));
+
+                        // Extract supplier name from the first row (or a generic name)
+                        const nomFournisseur = modifiedRows.length > 0 ? modifiedRows[0].nomFournisseur : "Fournisseur";
+
+                        try {
+                            const res = await fetch("/api/export/modified-gammes", {
+                                method: "POST",
+                                headers: { "Content-Type": "application/json" },
+                                body: JSON.stringify({ nomFournisseur, changes }),
+                            });
+
+                            if (!res.ok) throw new Error("Erreur lors de l'export");
+
+                            const blob = await res.blob();
+                            const url = window.URL.createObjectURL(blob);
+                            const a = document.createElement("a");
+                            a.href = url;
+                            a.download = `Modifications_Gammes_${nomFournisseur.replace(/\s+/g, "_")}_${new Date().toISOString().slice(0, 10)}.xlsx`;
+                            a.click();
+                            window.URL.revokeObjectURL(url);
+                        } catch (error) {
+                            console.error(error);
+                            alert("Une erreur s'est produite lors de la génération du fichier Excel.");
+                        }
+                    }}
                     className="px-6 py-3 rounded-xl text-sm font-bold transition-all active:scale-95 border hover:brightness-105"
                     style={{
                         background: "var(--action-secondary-bg)",
@@ -60,6 +98,7 @@ export function FloatingSummaryBar() {
                 >
                     Export Excel
                 </button>
+
                 <button
                     className="px-8 py-3 rounded-xl text-sm font-black transition-all shadow-lg active:scale-95 text-white hover:brightness-110"
                     style={{