import asyncio
import os

from dotenv import load_dotenv
from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
from sqlalchemy.orm import DeclarativeBase, sessionmaker

load_dotenv()
DATABASE_URL = os.getenv("DATABASE_URL")
if not DATABASE_URL:
    raise ValueError("DATABASE_URL not found in .env")

engine = create_async_engine(DATABASE_URL, echo=True, future=True)
async_session = sessionmaker(bind=engine, class_=AsyncSession, expire_on_commit=False)


class Base(DeclarativeBase):
    pass


async def get_async_session() -> AsyncSession:
    async with async_session() as session:
        yield session


async def init_db():

    async with engine.begin() as conn:
        await conn.run_sync(Base.metadata.create_all)


if __name__ == "__main__":
    asyncio.run(init_db())
    print("All tables created!")