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


app = FastAPI()

# ---------------------------------------------------------------------------
# Middleware
# ---------------------------------------------------------------------------
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)

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