import { NextResponse } from "next/server";
import type { NextRequest } from "next/server";
import { getSessionClientId } from "@/lib/auth";
import { isAdminSession } from "@/lib/adminAuth";
import { getAbsenceList } from "@/lib/absenceList";
import { createAbsenceAction } from "@/lib/actions/absences";
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 viewerId = await getSessionClientId();
  if (!viewerId || !(await isAdminSession())) {
    return NextResponse.json({ error: "Nicht angemeldet." }, { status: 401, headers });
  }
  const absences = await getAbsenceList();
  return NextResponse.json({ absences, viewerId }, { headers });
}

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

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