import logging
from contextlib import asynccontextmanager

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

from api.v1.chat import router as v1_router
from core.config import DEEPSEEK_API_KEY
from core.llm import create_client

# ---------------------------------------------------------------------------
# Logging — tool calls will appear in the uvicorn console
# ---------------------------------------------------------------------------
logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s [%(name)s] %(levelname)s: %(message)s",
    datefmt="%H:%M:%S",
)

# ---------------------------------------------------------------------------
# Load all agents & skills so they self-register at startup
# ---------------------------------------------------------------------------
from agents import load_all_agents  # noqa: E402

load_all_agents()

# ---------------------------------------------------------------------------
# Lifespan
# ---------------------------------------------------------------------------
@asynccontextmanager
async def lifespan(app: FastAPI):
    from bot.discord_bot import start_in_background  # noqa: E402

    start_in_background()

    yield


# ---------------------------------------------------------------------------
# App
# ---------------------------------------------------------------------------
app = FastAPI(lifespan=lifespan)

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# ---------------------------------------------------------------------------
# Singletons (stored on app.state so every module can reach them via Depends)
# ---------------------------------------------------------------------------
app.state.llm_client = create_client(DEEPSEEK_API_KEY)

# Lazy-compiled LangGraph graphs — populated on first use per agent
app.state.agent_graphs: dict = {}

# ---------------------------------------------------------------------------
# Routers
# ---------------------------------------------------------------------------
app.include_router(v1_router, prefix="/v1")