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

type Params = { params: Promise<{ staffId: string }> };

/** Remove a staff member's Student Identity maintainer assignment. */
export async function DELETE(_req: Request, { params }: Params) {
  const session = await requireRole("INSTITUTION_ADMIN");
  if (!session || !session.institutionId) {
    return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
  }
  const { staffId: idParam } = await params;
  const staffId = Number(idParam);
  if (!staffId) return NextResponse.json({ error: "Invalid staff" }, { status: 400 });

  try {
    await prisma.identityManager.deleteMany({
      where: { institutionId: session.institutionId, staffId },
    });
    return NextResponse.json({ ok: true });
  } catch {
    return NextResponse.json({ error: "Could not remove assignment" }, { status: 500 });
  }
}