"""Runtime configuration for the agent-permissions library."""

from __future__ import annotations

from dataclasses import dataclass, field
from typing import Optional

from .caching.store import CacheStore, InMemoryCacheStore


@dataclass
class Settings:
    """Holds configuration knobs for the library."""

    http_timeout: float = 10.0
    http_user_agent: str = (
        "agent-permissions-python/0.1 (+https://example.com/agent-permissions)"
    )
    enable_cache: bool = True
    cache_ttl_seconds: int = 900
    cache: CacheStore = field(default_factory=InMemoryCacheStore)
    follow_redirects: bool = True
    max_redirects: int = 5


_settings = Settings()


def configure(settings: Settings) -> None:
    """Replace the global settings object."""

    global _settings
    _settings = settings


def get_settings() -> Settings:
    """Return the current global settings."""

    return _settings


def set_cache(store: CacheStore) -> None:
    """Convenience helper to swap the cache store."""

    _settings.cache = store