from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from sqlalchemy.pool import StaticPool
import os
from .models import Base

DATABASE_URL = os.getenv("DATABASE_URL", "sqlite:///./know_foolery.db")

engine = create_engine(
    DATABASE_URL,
    connect_args={"check_same_thread": False} if "sqlite" in DATABASE_URL else {},
    poolclass=StaticPool if "sqlite" in DATABASE_URL else None,
    echo=os.getenv("DEBUG", "false").lower() == "true"
)

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


def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()


def create_tables():
    Base.metadata.create_all(bind=engine)