export const runtime = "nodejs";

import { NextResponse } from "next/server";
import { z } from "zod";
import { getCustomerByPortalToken, appendCustomerReply } from "@/lib/tickets/service";

const schema = z.object({
  token: z.string().min(1),
  body: z.string().min(1).max(10_000),
});

export async function POST(
  request: Request,
  { params }: { params: Promise<{ ticketId: string }> },
) {
  const { ticketId } = await params;
  const body = await request.json().catch(() => null);
  const parsed = schema.safeParse(body);
  if (!parsed.success) {
    return NextResponse.json({ error: "Invalid input" }, { status: 400 });
  }

  const customer = await getCustomerByPortalToken(parsed.data.token);
  if (!customer) {
    return NextResponse.json({ error: "Invalid token" }, { status: 404 });
  }

  try {
    const result = await appendCustomerReply({
      ticketId,
      customerId: customer.id,
      authorName: customer.displayName,
      body: parsed.data.body,
    });
    return NextResponse.json(result, { status: 201 });
  } catch {
    return NextResponse.json({ error: "Ticket not found" }, { status: 404 });
  }
}