/**
 * GET /api/industry-intel/history?brandId=X&limit=30
 */

import { NextResponse } from "next/server";
import { getCurrentUser } from "@/lib/auth";
import { prisma } from "@/lib/prisma";

export const dynamic = "force-dynamic";

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

  const { searchParams } = new URL(req.url);
  const brandId = searchParams.get("brandId");
  if (!brandId) return NextResponse.json({ error: "brandId required" }, { status: 400 });

  const brand = await prisma.brand.findUnique({
    where: { id: 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 limit = Math.max(1, Math.min(90, Number(searchParams.get("limit") || 30)));
  const briefings = await prisma.industryBriefing.findMany({
    where: { brandId },
    orderBy: { generatedAt: "desc" },
    take: limit,
    select: { id: true, industry: true, summary: true, generatedAt: true, period: true },
  });

  return NextResponse.json({ briefings });
}
