import asyncio
from contextlib import asynccontextmanager

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

from app.api.v1.router import api_router
from app.config import settings
from app.db import init_db, run_migrations
from app.seed import seed_db
from app.services.exchange_rate import refresh_rates_periodically


@asynccontextmanager
async def lifespan(app: FastAPI):
    init_db()
    run_migrations()
    seed_db()
    rate_refresh_task = asyncio.create_task(refresh_rates_periodically())
    try:
        yield
    finally:
        rate_refresh_task.cancel()
        try:
            await rate_refresh_task
        except asyncio.CancelledError:
            pass


app = FastAPI(title="WealthySmart API", version="0.1.0", lifespan=lifespan)

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

app.include_router(api_router)


@app.get("/")
def root():
    return {"app": "WealthySmart", "version": "0.1.0"}