feat: voucher crud and list

app/api/vouchers/[id]/route.ts

@@ -0,0 +1,21 @@
+import { NextRequest, NextResponse } from "next/server";
+import { getDb } from "@/lib/db";
+
+export async function GET(_req: NextRequest, { params }: { params: Promise<{ id: string }> }) {
+  const { id } = await params;
+  const db = getDb();
+  const v = await db.voucher.findUnique({ where: { id: Number(id) } });
+  if (!v) return NextResponse.json({ error: "not found" }, { status: 404 });
+  return NextResponse.json(v);
+}
+
+export async function POST(req: NextRequest, { params }: { params: Promise<{ id: string }> }) {
+  const { id } = await params;
+  const body = await req.json().catch(() => ({}));
+  if (body.action !== "redeem") return NextResponse.json({ error: "unknown action" }, { status: 400 });
+  const db = getDb();
+  const v = await db.voucher.findUnique({ where: { id: Number(id) } });
+  if (!v) return NextResponse.json({ error: "not found" }, { status: 404 });
+  const updated = await db.voucher.update({ where: { id: v.id }, data: { status: "eingeloest", restCents: 0 } });
+  return NextResponse.json(updated);
+}