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import asyncio
from contextlib import asynccontextmanager
from fastapi import FastAPI
from app.api.endpoints.poetry import router as poetry_router
import os
import logging
from typing import Tuple
from starlette.responses import Response
from starlette.staticfiles import StaticFiles
from huggingface_hub import login
from functools import lru_cache
from app.services.poetry_generation import PoetryGenerationService
# Configure logging once at module level
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)
@lru_cache()
def get_hf_token() -> str:
"""Get Hugging Face token from environment variables."""
token = os.getenv("HF_TOKEN")
if not token:
raise EnvironmentError(
"HF_TOKEN environment variable not found. "
"Please set your Hugging Face access token."
)
return token
def init_huggingface():
"""Initialize Hugging Face authentication."""
try:
token = get_hf_token()
login(token=token)
logger.info("Successfully logged in to Hugging Face")
except Exception as e:
logger.error(f"Failed to login to Hugging Face: {str(e)}")
raise
@asynccontextmanager
async def lifespan(app: FastAPI):
# Initialize Hugging Face authentication first
init_huggingface()
# Initialize poetry service and preload models
poetry_service = PoetryGenerationService()
# Only await if `preload_models` is asynchronous
if callable(getattr(poetry_service, "preload_models", None)):
result = poetry_service.preload_models()
if asyncio.iscoroutine(result):
await result
else:
result() # Call directly if synchronous
yield # Continue to application startup
app = FastAPI(lifespan=lifespan)
app.include_router(poetry_router, prefix="/api/v1/poetry")
@app.get("/healthz")
async def lifecheck():
return Response("OK", media_type="text/plain")
def get_port() -> int:
return int(os.getenv("PORT", "8000"))
if __name__ == "__main__":
import uvicorn
port = get_port()
app.mount("/static", StaticFiles(directory="static"), name="static")
logger.info(f"Starting FastAPI server on port {port}")
uvicorn.run(app, host="0.0.0.0", port=port)
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