"""
API key configuration.
All third-party keys should be provided via environment variables (recommended: backend_api_python/.env).
"""

import os


class MetaAPIKeys(type):
    """API Keys metaclass, used to support dynamic acquisition of class attributes"""

    @property
    def FINNHUB_API_KEY(cls):
        from app.utils.config_loader import load_addon_config

        val = load_addon_config().get("finnhub", {}).get("api_key")
        return val if val else os.getenv("FINNHUB_API_KEY", "")

    @property
    def TIINGO_API_KEY(cls):
        from app.utils.config_loader import load_addon_config

        val = load_addon_config().get("tiingo", {}).get("api_key")
        return val if val else os.getenv("TIINGO_API_KEY", "")

    @property
    def OPENROUTER_API_KEY(cls):
        # Always check env var first to avoid stale cache issues
        env_val = os.getenv("OPENROUTER_API_KEY", "").strip()
        if env_val:
            return env_val
        from app.utils.config_loader import load_addon_config

        val = load_addon_config().get("openrouter", {}).get("api_key")
        return val if val else ""

    @property
    def OPENAI_API_KEY(cls):
        """OpenAI direct API key"""
        env_val = os.getenv("OPENAI_API_KEY", "").strip()
        if env_val:
            return env_val
        from app.utils.config_loader import load_addon_config

        val = load_addon_config().get("openai", {}).get("api_key")
        return val if val else ""

    @property
    def GOOGLE_API_KEY(cls):
        """Google Gemini API key"""
        env_val = os.getenv("GOOGLE_API_KEY", "").strip()
        if env_val:
            return env_val
        from app.utils.config_loader import load_addon_config

        val = load_addon_config().get("google", {}).get("api_key")
        return val if val else ""

    @property
    def DEEPSEEK_API_KEY(cls):
        """DeepSeek API key"""
        env_val = os.getenv("DEEPSEEK_API_KEY", "").strip()
        if env_val:
            return env_val
        from app.utils.config_loader import load_addon_config

        val = load_addon_config().get("deepseek", {}).get("api_key")
        return val if val else ""

    @property
    def GROK_API_KEY(cls):
        """xAI Grok API key"""
        env_val = os.getenv("GROK_API_KEY", "").strip()
        if env_val:
            return env_val
        from app.utils.config_loader import load_addon_config

        val = load_addon_config().get("grok", {}).get("api_key")
        return val if val else ""

    @property
    def TAVILY_API_KEYS(cls):
        """Tavily Search API keys (comma-separated for rotation)"""
        env_val = os.getenv("TAVILY_API_KEYS", "").strip()
        if env_val:
            return [k.strip() for k in env_val.split(",") if k.strip()]
        from app.utils.config_loader import load_addon_config

        val = load_addon_config().get("tavily", {}).get("api_keys", "")
        if val:
            return [k.strip() for k in val.split(",") if k.strip()]
        return []

    @property
    def SERPAPI_KEYS(cls):
        """SerpAPI keys (comma-separated for rotation)"""
        env_val = os.getenv("SERPAPI_KEYS", "").strip()
        if env_val:
            return [k.strip() for k in env_val.split(",") if k.strip()]
        from app.utils.config_loader import load_addon_config

        val = load_addon_config().get("serpapi", {}).get("api_keys", "")
        if val:
            return [k.strip() for k in val.split(",") if k.strip()]
        return []


class APIKeys(metaclass=MetaAPIKeys):
    """API key configuration class"""

    @classmethod
    def get(cls, key_name: str, default: str = "") -> str:
        """Get API key"""
        # Try to get from class attribute
        if hasattr(cls, key_name):
            return getattr(cls, key_name)
        return default

    @classmethod
    def is_configured(cls, key_name: str) -> bool:
        """Check if the API key is configured"""
        value = cls.get(key_name)
        return bool(value and value.strip())