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 { FaqItem } from "@/models/FaqItem";
import { createFaqItemAction } from "@/lib/actions/faq";
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("faq_view"))) {
    return NextResponse.json({ error: "Keine Berechtigung." }, { status: 403, headers });
  }
  await connectDB();
  const items = await FaqItem.find({}).sort({ sortOrder: 1 }).lean();
  return NextResponse.json(
    {
      items: items.map((i) => ({
        _id: String(i._id),
        question: i.question,
        questionEn: i.questionEn,
        answer: i.answer,
        answerEn: i.answerEn,
        category: i.category,
        categoryEn: i.categoryEn,
        visible: i.visible,
      })),
    },
    { headers }
  );
}

// Multipart-Feldnamen direkt durchgereicht (auch ohne Bild hier, aber
// konsistent mit dem Muster bei Portfolio/Testimonials/Blog) — spart die
// manuelle Feld-für-Feld-Aufzählung und nimmt automatisch questionEn/
// answerEn/categoryEn mit, die vorher hier verloren gingen.
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("question", typeof body?.question === "string" ? body.question : "");
  formData.set("questionEn", typeof body?.questionEn === "string" ? body.questionEn : "");
  formData.set("answer", typeof body?.answer === "string" ? body.answer : "");
  formData.set("answerEn", typeof body?.answerEn === "string" ? body.answerEn : "");
  formData.set("category", typeof body?.category === "string" ? body.category : "");
  formData.set("categoryEn", typeof body?.categoryEn === "string" ? body.categoryEn : "");
  formData.set("visible", "on");

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