import toml
from pathlib import Path


class Config:
    """Configuration class that loads settings from a TOML file"""

    def __init__(self, config_file="config.toml"):
        """Initialize configuration from a TOML file

        Args:
            config_path (str): Path to the TOML configuration file
        """
        config_dir = Path(__file__).resolve().parent
        self.project_root = config_dir.parent
        self.config_path = self.project_root / config_file
        self._load_config()

    def _load_config(self):
        """Load configuration from TOML file"""
        if not self.config_path.exists():
            raise FileNotFoundError(f"Configuration file not found: {self.config_path}")

        # Load configuration
        config_data = toml.load(self.config_path)

        # Extract and set attributes
        self.username = config_data["user"]["username"]
        self.api_key_file = self.project_root.joinpath(
            "keys", config_data["api"]["key_file"])
        self.host = config_data["api"]["host"]
        self._load_api_key()

    def _load_api_key(self):
        """Load API key from the specified file"""
        if not self.api_key_file.exists():
            raise FileNotFoundError(f"API key file not found: {self.api_key_file}")

        with (open(self.api_key_file, 'r') as key_file):
            self.api_key = key_file.read().strip().replace('\n', '').replace('\r', '')

    def get_headers(self):
        """Return headers for API requests"""
        return {
            "api_key": self.api_key,
            "api_username": self.username
        }

    def get_api_url(self, endpoint=""):
        """Return the full API URL for the given endpoint

        Args:
            endpoint (str): The API endpoint (e.g., "posts.json")

        Returns:
            str: The full API URL
        """
        # Handle cases where endpoint may already have leading slash
        endpoint = endpoint.lstrip('/')

        # Construct and return the full URL
        return f"https://{self.host}/{endpoint}"

    def __str__(self):
        """String representation of the configuration"""
        return (f"Configuration:\n"
                f"- Username: {self.username}\n"
                f"- Host: {self.host}\n"
                f"- API Key File: {self.api_key_file}\n"
                f"- API Key: {'*' * 10}")  # Don't show the actual key