import json
import logging
import os
import time

import pandas as pd
from huggingface_hub import snapshot_download

from src.envs import DATA_PATH, HF_TOKEN_PRIVATE

# Configure logging
logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s")


def time_diff_wrapper(func):
    def wrapper(*args, **kwargs):
        start_time = time.time()
        result = func(*args, **kwargs)
        end_time = time.time()
        diff = end_time - start_time
        logging.info("Time taken for %s: %s seconds", func.__name__, diff)
        return result

    return wrapper


@time_diff_wrapper
def download_dataset(repo_id, local_dir, repo_type="dataset", max_attempts=3, backoff_factor=1.5):
    """Download dataset with exponential backoff retries."""
    os.makedirs(local_dir, exist_ok=True)
    attempt = 0
    while attempt < max_attempts:
        try:
            logging.info("Downloading %s to %s", repo_id, local_dir)
            snapshot_download(
                repo_id=repo_id,
                local_dir=local_dir,
                cache_dir='./tmp',
                repo_type=repo_type,
                tqdm_class=None,
                token=HF_TOKEN_PRIVATE,
                etag_timeout=30,
                max_workers=8,
                local_dir_use_symlinks=False
            )
            logging.info("Download successful")
            return
        except Exception as e:
            wait_time = backoff_factor**attempt
            logging.error("Error downloading %s: %s, retrying in %ss", repo_id, e, wait_time)
            time.sleep(wait_time)
            attempt += 1
    logging.error("Failed to download %s after %s attempts", repo_id, max_attempts)


def download_openbench():
    # download prev autogenerated leaderboard files
    download_dataset("Vikhrmodels/s-shlepa-metainfo", DATA_PATH)

    # download answers of different models that we trust
    download_dataset("Vikhrmodels/s-openbench-eval", "m_data")


def build_leadearboard_df():
    # Retrieve the leaderboard DataFrame
    with open(f"{os.path.abspath(DATA_PATH)}/leaderboard.json", "r", encoding="utf-8") as eval_file:
        f=json.load(eval_file)
        print(f)
        df = pd.DataFrame.from_records(f)
        if 'mmluproru' in list(df.columns):
            df['mmluproru'] = df['mmluproru'].fillna(0)
        else:
            df['mmluproru'] = 0
        leaderboard_df = df[['model','mmluproru','moviesmc','musicmc','lawmc','booksmc','model_dtype','ppl']]
        leaderboard_df['avg ⬆️'] = leaderboard_df[['moviesmc','musicmc','lawmc','booksmc','mmluproru']].mean(axis=1)
        leaderboard_df.sort_values(by='avg ⬆️',ascending=False,inplace=True)
        numeric_cols = leaderboard_df.select_dtypes(include=['number']).columns
        leaderboard_df[numeric_cols] = leaderboard_df[numeric_cols].round(3)
    return leaderboard_df.copy()