from typing import AsyncGenerator

from sqlalchemy import create_engine, MetaData
# from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
from sqlalchemy.orm import sessionmaker, DeclarativeBase
from sqlalchemy.ext.declarative import declarative_base


SQLALCHEMY_DATABASE_URL = "sqlite:///./sql_app.db"

engine = create_engine(
    SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False}
)

SessionLocal = sessionmaker(bind=engine, autoflush=True, autocommit=False)

database = SessionLocal()
Base = declarative_base()


# # add your model's MetaData object here
# # for 'autogenerate' support
# # in your application's model:

# class Base(DeclarativeBase):
#     metadata = MetaData(naming_convention={
#         "ix": "ix_%(column_0_label)s",
#         "uq": "uq_%(table_name)s_%(column_0_name)s",
#         "ck": "ck_%(table_name)s_`%(constraint_name)s`",
#         "fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s",
#         "pk": "pk_%(table_name)s"
#     })