class DiscourseAuth:
    """Handles authentication with the Discourse API."""

    def __init__(self, api_key=None, api_key_file=None, username=None):
        """
        Initialize with API key details.

        Args:
            api_key: The API key as a string
            api_key_file: Path to file containing the API key
            username: The API username
        """
        self.username = username
        self.api_key = None

        if api_key:
            self.api_key = api_key
        elif api_key_file:
            self._load_key_from_file(api_key_file)

    def _load_key_from_file(self, key_file):
        """Load API key from file and clean it."""
        with open(key_file, 'r') as f:
            self.api_key = f.read().strip().replace('\n', '').replace('\r', '')

    def get_headers(self):
        """Return headers for API requests."""
        if not self.api_key or not self.username:
            raise ValueError("API key and username must be set")

        return {
            "api_key": self.api_key,
            "api_username": self.username
        }