"""FastAPI dependencies — provider, settings, sessions, agents via app.state (DI)."""

from fastapi import Request

from ..agents.registry import AgentRegistry
from ..agents.session import SessionStore
from ..config import Settings
from ..llm.base import LLMProvider
from ..sandbox.manager import SandboxManager
from ..sandbox.workdir import SandboxDir


def get_settings(request: Request) -> Settings:
    return request.app.state.settings


def get_provider(request: Request) -> LLMProvider:
    return request.app.state.provider


def get_session_store(request: Request) -> SessionStore:
    return request.app.state.session_store


def get_agent_registry(request: Request) -> AgentRegistry:
    return request.app.state.agent_registry


def get_sandbox_manager(request: Request) -> SandboxManager:
    return request.app.state.sandbox_manager


def get_sandbox_test_layout(request: Request) -> SandboxDir | None:
    """Optional test seam (app.state.sandbox_test_layout); always None in prod."""
    return getattr(request.app.state, "sandbox_test_layout", None)