"""Utility functions for config file management."""

from pathlib import Path
from urllib.parse import urlparse


def normalize_domain_to_slug(domain: str) -> str:
    """
    Normalize domain name to config file slug.
    
    Converts domain like 'themarblecoffee.com' to 'themarblecoffee-com'
    This ensures consistent config file naming across the system.
    
    Args:
        domain: Domain name (e.g., 'themarblecoffee.com' or 'https://themarblecoffee.com')
    
    Returns:
        Normalized slug (e.g., 'themarblecoffee-com')
    """
    # Remove protocol if present
    if domain.startswith(('http://', 'https://')):
        parsed = urlparse(domain)
        domain = parsed.netloc
    else:
        # Remove path if present
        domain = domain.split('/')[0]
    
    # Remove www. prefix
    if domain.startswith('www.'):
        domain = domain[4:]
    
    # Replace dots with dashes
    domain_slug = domain.replace('.', '-')
    
    return domain_slug


def get_config_path_for_domain(domain: str, config_dir: Path = None) -> Path:
    """
    Get the standard config file path for a domain.
    
    Args:
        domain: Domain name
        config_dir: Config directory (default: 'configs')
    
    Returns:
        Path to config file
    """
    if config_dir is None:
        config_dir = Path('configs')
    
    domain_slug = normalize_domain_to_slug(domain)
    return config_dir / f"{domain_slug}.yaml"


def find_config_file_for_domain(domain: str, config_dir: Path = None) -> Path:
    """
    Find config file for a domain, checking both formats (with dot and with dash).
    
    Args:
        domain: Domain name
        config_dir: Config directory (default: 'configs')
    
    Returns:
        Path to config file if found, None otherwise
    """
    if config_dir is None:
        config_dir = Path('configs')
    
    # Normalize domain
    if domain.startswith(('http://', 'https://')):
        parsed = urlparse(domain)
        domain = parsed.netloc
    if domain.startswith('www.'):
        domain = domain[4:]
    
    # Try both formats
    possible_configs = [
        config_dir / f"{domain}.yaml",  # Exact domain (with dot)
        config_dir / f"{domain.replace('.', '-')}.yaml",  # Domain slug (with dash)
        config_dir / f"{domain}.yml",
        config_dir / f"{domain.replace('.', '-')}.yml",
    ]
    
    for config_path in possible_configs:
        if config_path.exists():
            return config_path
    
    return None