/**
 * POST /api/industry-intel/generate — generate a fresh briefing.
 */

import { NextResponse } from "next/server";
import { getCurrentUser } from "@/lib/auth";
import { prisma } from "@/lib/prisma";
import { generateBriefing } from "@/lib/services/industry-intel";

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

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

  const body = await req.json().catch(() => null) as { brandId?: string; scope?: "local" | "national"; force?: boolean } | null;
  if (!body?.brandId) return NextResponse.json({ error: "brandId required" }, { status: 400 });

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

  const scope = body.scope === "national" ? "national" : "local";
  const result = await generateBriefing(body.brandId, { scope, force: !!body.force });
  if (!result) return NextResponse.json({ error: "Brand has no industry set — update brand profile first" }, { status: 400 });

  const briefing = await prisma.industryBriefing.findUnique({ where: { id: result.id } });
  return NextResponse.json({ briefing });
}
