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from typing import Generator
from sqlalchemy import create_engine
from sqlalchemy.orm import Session, sessionmaker
from app.core.config import settings
from app.models.ecg import Base
# Synchronous engine for database connections (works with SQLite reliably here)
engine = create_engine(
settings.DATABASE_URL,
echo=False,
future=True,
)
# Session factory
SessionLocal = sessionmaker(
bind=engine,
autocommit=False,
autoflush=False,
)
def get_session() -> Generator[Session, None, None]:
"""
FastAPI dependency providing a synchronous Session.
"""
db = SessionLocal()
try:
yield db
finally:
db.close()
def init_db() -> None:
"""
Create database tables on startup.
"""
Base.metadata.create_all(bind=engine)
def close_engine() -> None:
"""
Dispose of the engine on shutdown.
"""
engine.dispose()
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