/**
 * POST /api/competitors/[id]/compare-rankings — rank comparison.
 */

import { NextResponse } from "next/server";
import { getCurrentUser } from "@/lib/auth";
import { prisma } from "@/lib/prisma";
import { compareRankings } from "@/lib/services/competitor-monitor";

export const dynamic = "force-dynamic";
export const maxDuration = 120;

export async function POST(_req: Request, { params }: { params: { id: string } }) {
  const user = await getCurrentUser();
  if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });

  const comp = await prisma.competitor.findUnique({
    where: { id: params.id },
    include: { brand: { include: { organization: { include: { memberships: true } } } } },
  });
  if (!comp) return NextResponse.json({ error: "Not found" }, { status: 404 });
  if (!comp.brand.organization.memberships.some((m) => m.userId === user.id)) return NextResponse.json({ error: "Access denied" }, { status: 403 });

  const comparisons = await compareRankings(comp.brandId, comp.id);
  return NextResponse.json({ comparisons });
}
