from __future__ import annotations

from contextlib import asynccontextmanager
import logging

from starlette.applications import Starlette
from starlette.routing import Mount

from app.config import get_settings
from app.mcp import mcp

settings = get_settings()
logger = logging.getLogger("personal-agent.mcp")


@asynccontextmanager
async def lifespan(_: Starlette):
    effective_mode = settings.auth_mode if settings.mcp_auth_mode == "inherit" else settings.mcp_auth_mode
    logger.info(
        "MCP authentication mode=%s (base AUTH_MODE=%s)",
        effective_mode,
        settings.auth_mode,
    )
    async with mcp.session_manager.run():
        yield


app = Starlette(
    routes=[
        Mount("/mcp", app=mcp.streamable_http_app()),
    ],
    lifespan=lifespan,
)