♻️ Refactor backend, settings, DB sessions, types, configs, plugins (#158)

* ♻️ Refactor backend, update DB session handling

* ✨ Add mypy config and plugins

* ➕ Use Python-jose instead of PyJWT

as it has some extra functionalities and features

* ✨ Add/update scripts for test, lint, format

* 🔧 Update lint and format configs

* 🎨 Update import format, comments, and types

* 🎨 Add types to config

* ✨ Add types for all the code, and small fixes

* 🎨 Use global imports to simplify exploring with Jupyter

* ♻️ Import schemas and models, instead of each class

* 🚚 Rename db_session to db for simplicity

* 📌 Update dependencies installation for testing

{{cookiecutter.project_slug}}/backend/app/app/db/base.py

@@ -1,5 +1,5 @@
 # Import all the models, so that Base has them before being
 # imported by Alembic
 from app.db.base_class import Base  # noqa
-from app.models.user import User  # noqa
 from app.models.item import Item  # noqa
+from app.models.user import User  # noqa

{{cookiecutter.project_slug}}/backend/app/app/db/base_class.py

@@ -1,9 +1,13 @@
+from typing import Any
+
 from sqlalchemy.ext.declarative import as_declarative, declared_attr
 
 
 @as_declarative()
 class Base:
+    id: Any
+    __name__: str
     # Generate __tablename__ automatically
     @declared_attr
-    def __tablename__(cls):
+    def __tablename__(cls) -> str:
         return cls.__name__.lower()

{{cookiecutter.project_slug}}/backend/app/app/db/init_db.py

@@ -1,24 +1,25 @@
-from app import crud
-from app.core.config import settings
-from app.schemas.user import UserCreate
+from sqlalchemy.orm import Session
 
-# make sure all SQL Alchemy models are imported before initializing DB
-# otherwise, SQL Alchemy might fail to initialize relationships properly
-# for more details: https://github.com/tiangolo/full-stack-fastapi-postgresql/issues/28
+from app import crud, schemas
+from app.core.config import settings
 from app.db import base  # noqa: F401
 
+# make sure all SQL Alchemy models are imported (app.db.base) before initializing DB
+# otherwise, SQL Alchemy might fail to initialize relationships properly
+# for more details: https://github.com/tiangolo/full-stack-fastapi-postgresql/issues/28
 
-def init_db(db_session):
+
+def init_db(db: 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 = crud.user.get_by_email(db_session, email=settings.FIRST_SUPERUSER)
+    user = crud.user.get_by_email(db, email=settings.FIRST_SUPERUSER)
     if not user:
-        user_in = UserCreate(
+        user_in = schemas.UserCreate(
             email=settings.FIRST_SUPERUSER,
             password=settings.FIRST_SUPERUSER_PASSWORD,
             is_superuser=True,
         )
-        user = crud.user.create(db_session, obj_in=user_in)  # noqa: F841
+        user = crud.user.create(db, obj_in=user_in)  # noqa: F841

{{cookiecutter.project_slug}}/backend/app/app/db/session.py

@@ -1,10 +1,7 @@
 from sqlalchemy import create_engine
-from sqlalchemy.orm import scoped_session, sessionmaker
+from sqlalchemy.orm import sessionmaker
 
 from app.core.config import settings
 
 engine = create_engine(settings.SQLALCHEMY_DATABASE_URI, pool_pre_ping=True)
-db_session = scoped_session(
-    sessionmaker(autocommit=False, autoflush=False, bind=engine)
-)
-Session = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)