backend/services/collectionService.js

import { config } from "../config/index.js";
import { qdrant } from "./qdrantClient.js";

export async function ensureCollection({ vectorSize }) {
  const collectionName = config.qdrant.collection;
  const existing = await qdrant.getCollections();
  const has = (existing?.collections ?? []).some((c) => c.name === collectionName);

  if (has) return;

  await qdrant.createCollection(collectionName, {
    vectors: {
      size: vectorSize,
      distance: "Cosine"
    }
  });
}