"""
config.py

Global configuration and logger setup for the project. This file centralizes shared
constants and settings, such as the logging configuration and API constraints.

Key Features:
- Configures the logger for consistent logging across all modules.
- Dynamically sets the logging level based on the DEBUG environment variable.
- Provides constants for shared constraints like maximum prompt length.

Constants:
- DEBUG: Indicates whether debug mode is enabled.
"""

# Standard Library Imports
import logging
import os
# Third-Party Library Imports
from dotenv import load_dotenv


# Load environment variables
load_dotenv()


# Enable debugging mode based on an environment variable
debug_raw = os.getenv("DEBUG", "false").lower()
if debug_raw not in {"true", "false"}:
    print(f"Warning: Invalid DEBUG value '{debug_raw}'. Defaulting to 'false'.")
DEBUG = debug_raw == "true"


# Configure the logger
logging.basicConfig(
    level=logging.DEBUG if DEBUG else logging.INFO,
    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
)
logger: logging.Logger = logging.getLogger("tts_arena")
logger.info(f"Debug mode is {'enabled' if DEBUG else 'disabled'}.")


# Log environment variables
def log_env_variable(var_name: str, value: str) -> None:
    """
    Logs the value of an environment variable for debugging purposes.

    Args:
        var_name (str): The name of the environment variable.
        value (str): The value of the environment variable.
    """
    logger.debug(f"Environment variable '{var_name}' validated with value: {value}")

log_env_variable("DEBUG", str(DEBUG))