"""Subscription login helpers (Claude Pro, ChatGPT Plus, etc.)."""

from typing import Optional
import httpx


class SubscriptionAuth:
    """Authentication via subscription accounts."""

    @staticmethod
    def login_claude_pro(email: str, password: str) -> Optional[str]:
        """Login to Claude Pro account.

        Note: This is a placeholder. Actual implementation would need:
        - Browser automation or official OAuth flow
        - Session token extraction
        - MFA handling

        Args:
            email: Account email
            password: Account password

        Returns:
            Session token or None
        """
        # In a real implementation, this would:
        # 1. Use playwright/selenium to automate browser login
        # 2. Handle MFA if enabled
        # 3. Extract session token
        # 4. Return token for API use

        raise NotImplementedError(
            "Subscription login requires browser automation.\n"
            "For now, please use API keys:\n"
            "  - Claude Pro users: Get API key from console.anthropic.com\n"
            "  - Or use ANTHROPIC_API_KEY environment variable"
        )

    @staticmethod
    def login_chatgpt_plus(email: str, password: str) -> Optional[str]:
        """Login to ChatGPT Plus account.

        Note: Similar limitations as Claude Pro.

        Args:
            email: Account email
            password: Account password

        Returns:
            Session token or None
        """
        raise NotImplementedError(
            "Subscription login requires browser automation.\n"
            "For now, please use API keys:\n"
            "  - ChatGPT Plus users: Get API key from platform.openai.com\n"
            "  - Or use OPENAI_API_KEY environment variable"
        )

    @staticmethod
    def check_subscription_status(provider: str, token: str) -> dict:
        """Check subscription status.

        Args:
            provider: Provider name
            token: Auth token

        Returns:
            Subscription info
        """
        # Placeholder for subscription checking
        return {
            "provider": provider,
            "active": True,
            "tier": "unknown",
            "note": "Subscription checking not fully implemented",
        }


class APIKeyManager:
    """Manage API keys for different providers."""

    def __init__(self):
        """Initialize API key manager."""
        self.keys = {}

    def set_key(self, provider: str, api_key: str) -> None:
        """Set API key for a provider.

        Args:
            provider: Provider name
            api_key: API key
        """
        self.keys[provider] = api_key

    def get_key(self, provider: str) -> Optional[str]:
        """Get API key for a provider.

        Checks:
        1. Stored keys
        2. Environment variables

        Args:
            provider: Provider name

        Returns:
            API key or None
        """
        import os

        # Check stored keys
        if provider in self.keys:
            return self.keys[provider]

        # Check environment variables
        env_var = f"{provider.upper()}_API_KEY"
        return os.getenv(env_var)

    def list_providers(self) -> list[str]:
        """List providers with API keys.

        Returns:
            List of provider names
        """
        import os

        providers = set(self.keys.keys())

        # Check common env vars
        for var in os.environ:
            if var.endswith("_API_KEY"):
                provider = var.replace("_API_KEY", "").lower()
                providers.add(provider)

        return sorted(providers)
