import os
import pickle
from typing import Any

import faiss
from huggingface_hub import hf_hub_download


def load_indexes_local(index_files: dict[str, str], *, data_folder: str, **kw) -> dict[str, Any]:
    indexes = {}
    for index_type, index_file in index_files.items():
        indexes[index_type] = faiss.read_index(os.path.join(data_folder, index_file))

    return indexes


def load_indexes_hf(index_files: dict[str, str], *, repo_name: str, **kw) -> dict[str, Any]:
    indexes = {}
    for index_type, index_file in index_files.items():
        indexes[index_type] = faiss.read_index(
            hf_hub_download(repo_id=repo_name, filename=index_file, repo_type="dataset")
        )

    return indexes


def load_index_pickle(index_file: str, repo_name: str) -> Any:
    index_to_id_dict_file = hf_hub_download(
        repo_id=repo_name,
        filename=index_file,
        repo_type="dataset",
    )
    with open(index_to_id_dict_file, "rb") as f:
        return pickle.load(f)