from __future__ import annotations
import os
from pathlib import Path
import yaml
from typing import Dict

def load_auth_credentials() -> Dict[str, str]:
    """Load authentication credentials from YAML file."""
    auth_file = Path("config/credentials.yaml")
    
    if not auth_file.exists():
        # Create default credentials file if it doesn't exist
        default_auth = {
            "credentials": {
                "admin": os.environ.get("ADMIN_PASSWORD", "change_this_password"),
            }
        }
        auth_file.parent.mkdir(parents=True, exist_ok=True)
        with open(auth_file, "w") as f:
            yaml.dump(default_auth, f)
    
    with open(auth_file, "r") as f:
        auth_data = yaml.safe_load(f)
    
    return auth_data.get("credentials", {})