backend/chat/searchChat.js

import { config } from "../src/config/index.js";
import { embedTexts } from "../src/services/ollamaClient.js";
import { qdrant } from "../src/services/qdrantClient.js";

function isRefusalText(text) {
  const t = String(text ?? "").toLowerCase();
  return (
    t.includes("desculpe") &&
    (t.includes("não posso") || t.includes("nao posso") || t.includes("não posso fornecer") || t.includes("nao posso fornecer"))
  );
}

export async function searchDocs({ query, topK }) {
  const collectionName = config.qdrant.collection;
  const [vector] = await embedTexts([query]);

  const result = await qdrant.search(collectionName, {
    vector,
    limit: topK ?? config.rag.topK,
    score_threshold: config.rag.minScore,
    with_payload: true,
    with_vector: false
  });

  return (result ?? [])
    .map((r) => ({
      score: r.score,
      id: r.id,
      text: r.payload?.text ?? "",
      source: r.payload?.source ?? null,
      chunkIndex: r.payload?.chunkIndex ?? null,
      metadata: r.payload?.metadata ?? null
    }))
    .filter((h) => !isRefusalText(h.text));
}