import os
import logging

def set_tokenizer_parallelism(enabled=False):
    """
    Configure tokenizer parallelism to avoid fork-related warnings.
    """
    os.environ["TOKENIZERS_PARALLELISM"] = str(enabled).lower()
    
    logger = logging.getLogger("ConfigUtils")
    if not logger.handlers:
        logging.basicConfig(level=logging.INFO)
    logger.info(f"Tokenizers parallelism set to: {enabled}")


def load_urls_from_file(file_path, logger_name="ConfigUtils"):
    """
    Load URLs from a text file, ignoring empty lines and comments.
    """
    logger = logging.getLogger(logger_name)
    if not logger.handlers:
        logging.basicConfig(level=logging.INFO)
    
    urls = []
    try:
        with open(file_path, 'r') as f:
            for line in f:
                line = line.strip()
                if line and not line.startswith('#'):
                    urls.append(line)
        logger.info(f"Loaded {len(urls)} URLs from {file_path}")
        for i, url in enumerate(urls):
            logger.debug(f"  URL {i+1}: {url}")
        return urls
    except Exception as e:
        logger.error(f"Error loading URLs from {file_path}: {str(e)}")
        return []