import { NextResponse } from "next/server";
import type { NextRequest } from "next/server";
import { getSessionClientId } from "@/lib/auth";
import { isAdminSession, hasPermission } from "@/lib/adminAuth";
import { connectDB } from "@/lib/db";
import { RejectionReason } from "@/models/RejectionReason";
import { createRejectionReasonAction } from "@/lib/actions/admin";
import { corsHeaders, corsPreflight } from "@/lib/teamApiCors";

export async function OPTIONS(request: NextRequest) {
  return corsPreflight(request);
}

export async function GET(request: NextRequest) {
  const headers = corsHeaders(request);
  const clientId = await getSessionClientId();
  if (!clientId || !(await isAdminSession())) {
    return NextResponse.json({ error: "Nicht angemeldet." }, { status: 401, headers });
  }
  if (!(await hasPermission("rejection_reasons_view"))) {
    return NextResponse.json({ error: "Keine Berechtigung." }, { status: 403, headers });
  }
  await connectDB();
  const reasons = await RejectionReason.find({}).sort({ sortOrder: 1 }).lean();
  return NextResponse.json({ reasons: reasons.map((r) => ({ _id: String(r._id), label: r.label, active: r.active })) }, { headers });
}

export async function POST(request: NextRequest) {
  const headers = corsHeaders(request);
  const clientId = await getSessionClientId();
  if (!clientId || !(await isAdminSession())) {
    return NextResponse.json({ error: "Nicht angemeldet." }, { status: 401, headers });
  }
  const body = await request.json().catch(() => null);
  const formData = new FormData();
  formData.set("label", typeof body?.label === "string" ? body.label : "");

  const result = await createRejectionReasonAction({}, formData);
  if (result.error) return NextResponse.json({ error: result.error }, { status: 400, headers });
  return NextResponse.json({ ok: true }, { headers });
}