"""Entrypoint cerbero-mcp.

Boot:
- carica Settings da .env
- costruisce app FastAPI con router per ogni exchange
- crea ClientRegistry con builder
- monta lifespan per chiusura pulita
- avvia uvicorn
"""
from __future__ import annotations

import contextlib
from contextlib import asynccontextmanager
from typing import Literal, cast

import uvicorn
from fastapi import FastAPI

from cerbero_mcp import admin
from cerbero_mcp.client_registry import ClientRegistry
from cerbero_mcp.common.logging import configure_root_logging
from cerbero_mcp.exchanges import build_client
from cerbero_mcp.routers import (
    deribit,
    hyperliquid,
    ibkr,
    macro,
    sentiment,
    unified,
)
from cerbero_mcp.server import build_app
from cerbero_mcp.settings import Settings


def _make_app(settings: Settings) -> FastAPI:
    app = build_app(
        testnet_token=settings.testnet_token.get_secret_value(),
        mainnet_token=settings.mainnet_token.get_secret_value(),
        title="Cerbero MCP",
        version="2.0.0",
    )

    app.state.settings = settings

    async def builder(exchange: str, env: str):
        return await build_client(
            settings, exchange, cast(Literal["testnet", "mainnet"], env)
        )

    app.state.registry = ClientRegistry(builder=builder)

    @asynccontextmanager
    async def lifespan(app: FastAPI):
        try:
            yield
        finally:
            # Stop any IBKR WebSocket singletons before closing client registry
            ibkr_ws_dict = getattr(app.state, "ibkr_ws", {}) or {}
            for ws in ibkr_ws_dict.values():
                with contextlib.suppress(Exception):
                    await ws.stop()
            await app.state.registry.aclose()

    app.router.lifespan_context = lifespan

    app.include_router(deribit.make_router())
    app.include_router(hyperliquid.make_router())
    app.include_router(ibkr.make_router())
    app.include_router(macro.make_router())
    app.include_router(sentiment.make_router())
    app.include_router(unified.make_router())
    app.include_router(admin.make_admin_router())

    return app


def main() -> None:
    configure_root_logging()
    settings = Settings()  # type: ignore[call-arg]
    app = _make_app(settings)
    uvicorn.run(
        app,
        log_config=None,
        host=settings.host,
        port=settings.port,
    )


if __name__ == "__main__":
    main()