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}"`,
+        },
+    });
+}