# main.py

import logging
import asyncio
import uvicorn
from fastapi import FastAPI
from contextlib import asynccontextmanager

from bot import start_bot

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger("main")

app = FastAPI()

# Lifespan event for startup/shutdown (new style → no deprecation warning!)
@asynccontextmanager
async def lifespan(app: FastAPI):
    logger.info("===== Application Startup =====")

    # Start bot in background
    dp, bot = start_bot()

    asyncio.create_task(dp.start_polling(bot))
    logger.info("Starting bot polling in background...")

    yield

    logger.info("===== Application Shutdown =====")
    await bot.session.close()

# Set FastAPI lifespan
app.router.lifespan_context = lifespan

# Healthcheck endpoint
@app.get("/health")
async def health():
    return {"status": "ok", "message": "Terabox Bot is running 🚀"}

# Optionally index page
@app.get("/")
async def index():
    return {
        "bot": "Terabox Downloader Bot",
        "version": "1.0",
        "health": "/health",
        "workers": "4",
        "note": "Send /start to the bot in Telegram to begin."
    }

if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=7860)