// PUT /api/tasks/:id (desktop) — idempotent upsert mirroring a desktop Idle task, owned by the caller.
export default defineEventHandler(async (event) => {
  const id = getRouterParam(event, "id")!;
  const body = await readBody(event);
  const title = body?.title;
  const listId = body?.listId;
  if (typeof title !== "string" || !title.trim() || typeof listId !== "string") {
    throw createError({ statusCode: 400, statusMessage: "listId and title are required" });
  }
  const description = typeof body?.description === "string" ? body.description : null;

  const ownerId = ownerOf(event);
  const sql = getSql();
  if (!(await listExists(sql, ownerId, listId))) {
    throw createError({ statusCode: 404, statusMessage: "list not found" });
  }

  const { created } = await upsertDesktopTask(sql, ownerId, id, { listId, title, description });
  setResponseStatus(event, created ? 201 : 200);
  return { id };
});