import json
import requests
from loguru import logger
from typing import Any, Optional, Dict
from web3.types import ChecksumAddress


def fetch_abi(address: ChecksumAddress, headers: Optional[Dict[str, Any]] = None,
              params: Optional[Dict[str, Any]] = None) -> Optional[Dict[str, Any]]:
    url = f'https://api.etherscan.io/api?module=contract&action=getabi&address={address}'
    response = requests.get(url, headers=headers, params=params)
    response.raise_for_status()
    data = response.json()

    # Check for error in the response
    if data['status'] == '0':
        logger.error(f"Error fetching ABI: {data.get('result')}")
        return None

    return json.loads(data['result'])


def load_config(path: str) -> dict:
    with open(path, 'r', encoding='utf-8') as f:
        return json.loads(f.read())