#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""Logging configuration for the chorus detection system."""

import logging
import os
import sys
from typing import Optional

from chorus_detection.config import PROJECT_ROOT

# Create logs directory
LOGS_DIR = PROJECT_ROOT / "logs"
os.makedirs(LOGS_DIR, exist_ok=True)


def setup_logger(name: str = "chorus_detection", level: int = logging.INFO, 
                 log_file: Optional[str] = None) -> logging.Logger:
    """Configure and return a logger with the specified name and level.
    
    Args:
        name: Name of the logger
        level: Logging level (default: INFO)
        log_file: Path to the log file (default: None)
        
    Returns:
        Configured logger instance
    """
    logger = logging.getLogger(name)
    logger.setLevel(level)
    
    # Create formatter
    formatter = logging.Formatter(
        "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
    )
    
    # Create console handler
    console_handler = logging.StreamHandler(sys.stdout)
    console_handler.setFormatter(formatter)
    logger.addHandler(console_handler)
    
    # Create file handler if log_file is specified
    if log_file:
        file_handler = logging.FileHandler(log_file)
        file_handler.setFormatter(formatter)
        logger.addHandler(file_handler)
    
    return logger


# Create default logger
logger = setup_logger()