import re
from collections import Counter

import numpy as np
from rank_bm25 import BM25Okapi
from sentence_transformers import SentenceTransformer, util


documents = [
    {
        "id": "doc-001",
        "text": "Customers can request money back when their card is charged twice.",
    },
    {
        "id": "doc-002",
        "text": "Policy ACME-482 covers duplicate invoice refunds.",
    },
    {
        "id": "doc-003",
        "text": "Export monthly invoices from the billing dashboard.",
    },
    {
        "id": "doc-004",
        "text": "Reset an expired password from the account security page.",
    },
    {
        "id": "doc-005",
        "text": "Configure alerts for failed card payments.",
    },
]
query = "ACME-482 card charged two times"