config.py

"""Configuration management for PageSpeed Insights analyzer."""
import os
from typing import Optional


class Config:
    """Configuration class for managing environment variables and settings."""
    def __init__(self):
        self._openai_api_key = None
        self._pagespeed_api_key = None
        self.openai_model = os.environ.get("OPENAI_MODEL", "o1-preview")
    
    @property
    def openai_api_key(self) -> Optional[str]:
        """Get OpenAI API key from environment variables."""
        if self._openai_api_key is None:
            self._openai_api_key = os.environ.get("OPENAI_API_KEY")
        return self._openai_api_key
    
    @property
    def pagespeed_api_key(self) -> Optional[str]:
        """Get PageSpeed Insights API key from environment variables."""
        if self._pagespeed_api_key is None:
            self._pagespeed_api_key = os.environ.get("PAGE_SPEED_API_KEY")
        return self._pagespeed_api_key
    
    def get_missing_vars(self) -> list[str]:
        """Get list of missing environment variables."""
        missing = []
        if not self.openai_api_key:
            missing.append("OPENAI_API_KEY")
        if not os.environ.get("GOOGLE_SERVICE_ACCOUNT_JSON"):
            missing.append("GOOGLE_SERVICE_ACCOUNT_JSON")
        return missing
    
    def validate(self) -> bool:
        """Validate that all required configuration is available."""
        # Only Google Service Account is mandatory
        return bool(os.environ.get("GOOGLE_SERVICE_ACCOUNT_JSON"))


config = Config()