🚚 Refactor and simplify backend file structure (#609)

src/backend/app/db/init_db.py

@@ -0,0 +1,26 @@
+from sqlmodel import Session, select
+
+from app import crud
+from app.core.config import settings
+from app.models import User, UserCreate  # noqa: F401
+
+# make sure all SQLModel models are imported (app.models) before initializing DB
+# otherwise, SQLModel might fail to initialize relationships properly
+# for more details: https://github.com/tiangolo/full-stack-fastapi-postgresql/issues/28
+
+
+def init_db(session: Session) -> None:
+    # Tables should be created with Alembic migrations
+    # But if you don't want to use migrations, create
+    # the tables un-commenting the next line
+    # Base.metadata.create_all(bind=engine)
+    user = session.exec(
+        select(User).where(User.email == settings.FIRST_SUPERUSER)
+    ).first()
+    if not user:
+        user_in = UserCreate(
+            email=settings.FIRST_SUPERUSER,
+            password=settings.FIRST_SUPERUSER_PASSWORD,
+            is_superuser=True,
+        )
+        user = crud.create_user(session=session, user_create=user_in)