Create simple ecommerce store API with FastAPI and SQLite

README.md

@@ -1,3 +1,112 @@
-# FastAPI Application
+# SimpleEcommerceStore API
 
-This is a FastAPI application bootstrapped by BackendIM, the AI-powered backend generation platform.
+A simple ecommerce store API built with FastAPI and SQLite.
+
+## Features
+
+- User authentication and registration
+- Product management (CRUD operations)
+- Shopping cart functionality
+- Order processing
+- Admin operations for product and order management
+
+## Tech Stack
+
+- **Framework**: FastAPI
+- **Database**: SQLite with SQLAlchemy ORM
+- **Authentication**: JWT tokens
+- **Migrations**: Alembic
+- **Validation**: Pydantic
+- **Linting**: Ruff
+
+## Project Structure
+
+```
+├── app/                    # Application package
+│   ├── api/                # API endpoints
+│   │   ├── v1/             # API version 1
+│   │   │   ├── endpoints/  # API endpoint modules
+│   │   │   └── api.py      # API router
+│   ├── core/               # Core modules
+│   │   ├── config.py       # Configuration settings
+│   │   └── security.py     # Security utilities
+│   ├── db/                 # Database
+│   │   ├── deps.py         # Dependency functions
+│   │   └── session.py      # Database session
+│   ├── models/             # SQLAlchemy models
+│   ├── schemas/            # Pydantic schemas
+│   ├── services/           # Business logic
+│   └── main.py             # FastAPI app
+├── migrations/             # Alembic migrations
+├── alembic.ini             # Alembic configuration
+├── main.py                 # Application entry point
+├── pyproject.toml          # Project configuration
+└── requirements.txt        # Dependencies
+```
+
+## API Endpoints
+
+### Health Check
+- `GET /health`: Application health status
+
+### Authentication
+- `POST /api/v1/auth/login`: Login and get access token
+- `POST /api/v1/auth/register`: Register a new user
+
+### Users
+- `GET /api/v1/users/me`: Get current user information
+- `PATCH /api/v1/users/me`: Update current user
+- `GET /api/v1/users/{user_id}`: Get user by ID (admin only)
+- `GET /api/v1/users/`: List all users (admin only)
+
+### Products
+- `GET /api/v1/products/`: List all products
+- `GET /api/v1/products/{id}`: Get product by ID
+- `POST /api/v1/products/`: Create a new product (admin only)
+- `PUT /api/v1/products/{id}`: Update a product (admin only)
+- `DELETE /api/v1/products/{id}`: Delete a product (admin only)
+
+### Cart
+- `GET /api/v1/cart/`: Get user's cart summary
+- `POST /api/v1/cart/items`: Add item to cart
+- `PUT /api/v1/cart/items/{item_id}`: Update cart item quantity
+- `DELETE /api/v1/cart/items/{item_id}`: Remove item from cart
+- `DELETE /api/v1/cart/`: Clear cart
+
+### Orders
+- `GET /api/v1/orders/`: List user's orders
+- `POST /api/v1/orders/`: Create order from cart
+- `GET /api/v1/orders/{id}`: Get order by ID
+- `PUT /api/v1/orders/{id}/status`: Update order status (admin only)
+
+## Setup and Running
+
+1. Install dependencies:
+```bash
+pip install -r requirements.txt
+```
+
+2. Run migrations:
+```bash
+alembic upgrade head
+```
+
+3. Run the development server:
+```bash
+python main.py
+```
+
+The API will be available at `http://localhost:8000`.
+API documentation is available at:
+- Swagger UI: `http://localhost:8000/docs`
+- ReDoc: `http://localhost:8000/redoc`
+
+## Database
+
+The application uses SQLite as its database, stored at `/app/storage/db/db.sqlite`. SQLAlchemy is used as the ORM layer to interact with the database.
+
+## Authentication
+
+The API uses JWT tokens for authentication. To access protected endpoints:
+1. Login with valid credentials at `/api/v1/auth/login`
+2. Use the returned access token in the Authorization header: `Bearer {token}`

alembic.ini

@@ -0,0 +1,85 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts
+script_location = migrations
+
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# timezone to use when rendering the date
+# within the migration file as well as the filename.
+# string value is passed to dateutil.tz.gettz()
+# leave blank for localtime
+# timezone =
+
+# max length of characters to apply to the
+# "slug" field
+# truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+# set to 'true' to allow .pyc and .pyo files without
+# a source .py file to be detected as revisions in the
+# versions/ directory
+# sourceless = false
+
+# version location specification; this defaults
+# to migrations/versions.  When using multiple version
+# directories, initial revisions must be specified with --version-path
+# version_locations = %(here)s/bar %(here)s/bat migrations/versions
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+# SQLite URL example
+sqlalchemy.url = sqlite:////app/storage/db/db.sqlite
+
+[post_write_hooks]
+# post_write_hooks defines scripts or Python functions that are run
+# on newly generated revision scripts.  See the documentation for further
+# detail and examples
+
+# format using "black" - use the console_scripts runner, against the "black" entrypoint
+# hooks=black
+# black.type=console_scripts
+# black.entrypoint=black
+# black.options=-l 79
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

app/__init__.py

@@ -0,0 +1 @@
+# This file is intentionally left empty to make the directory a Python package.

app/api/__init__.py

@@ -0,0 +1 @@
+# This file is intentionally left empty to make the directory a Python package.

app/api/v1/__init__.py

@@ -0,0 +1 @@
+# This file is intentionally left empty to make the directory a Python package.

app/api/v1/api.py

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+from fastapi import APIRouter
+
+from app.api.v1.endpoints import auth, cart, health, orders, products, users
+
+api_router = APIRouter()
+api_router.include_router(health.router, prefix="/health", tags=["health"])
+api_router.include_router(auth.router, prefix="/auth", tags=["auth"])
+api_router.include_router(users.router, prefix="/users", tags=["users"])
+api_router.include_router(products.router, prefix="/products", tags=["products"])
+api_router.include_router(cart.router, prefix="/cart", tags=["cart"])
+api_router.include_router(orders.router, prefix="/orders", tags=["orders"])

app/api/v1/endpoints/__init__.py

@@ -0,0 +1 @@
+# This file is intentionally left empty to make the directory a Python package.

app/api/v1/endpoints/auth.py

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+from datetime import timedelta
+from typing import Any
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordRequestForm
+from sqlalchemy.orm import Session
+
+from app import schemas
+from app.api.deps import get_db
+from app.core import security
+from app.core.config import settings
+from app.services import user_service
+
+router = APIRouter()
+
+@router.post("/login", response_model=schemas.Token)
+def login_access_token(
+    db: Session = Depends(get_db), form_data: OAuth2PasswordRequestForm = Depends()
+) -> Any:
+    """
+    OAuth2 compatible token login, get an access token for future requests
+    """
+    user = user_service.authenticate(
+        db, email=form_data.username, password=form_data.password
+    )
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Incorrect email or password",
+        )
+    elif not user.is_active:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Inactive user",
+        )
+    access_token_expires = timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
+    return {
+        "access_token": security.create_access_token(
+            user.id, expires_delta=access_token_expires
+        ),
+        "token_type": "bearer",
+    }
+
+@router.post("/register", response_model=schemas.User)
+def register_user(
+    *,
+    db: Session = Depends(get_db),
+    user_in: schemas.UserCreate,
+) -> Any:
+    """
+    Create new user
+    """
+    user = user_service.get_by_email(db, email=user_in.email)
+    if user:
+        raise HTTPException(
+            status_code=400,
+            detail="The user with this email already exists in the system",
+        )
+    username_exists = user_service.get_by_username(db, username=user_in.username)
+    if username_exists:
+        raise HTTPException(
+            status_code=400,
+            detail="The username is already taken",
+        )
+    user = user_service.create(db, obj_in=user_in)
+    return user

app/api/v1/endpoints/cart.py

@@ -0,0 +1,132 @@
+from typing import Any, List
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+
+from app import schemas
+from app.api.deps import get_current_active_user, get_db
+from app.models.user import User
+from app.services import cart_service, product_service
+
+router = APIRouter()
+
+@router.get("/", response_model=schemas.CartSummary)
+def read_cart(
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_active_user),
+) -> Any:
+    """
+    Retrieve user's cart.
+    """
+    cart_items = cart_service.get_cart_items(db, user_id=current_user.id)
+    total = sum(item.unit_price * item.quantity for item in cart_items)
+    return {"items": cart_items, "total": total}
+
+@router.post("/items", response_model=schemas.CartItem)
+def add_cart_item(
+    *,
+    db: Session = Depends(get_db),
+    item_in: schemas.CartItemCreate,
+    current_user: User = Depends(get_current_active_user),
+) -> Any:
+    """
+    Add item to cart.
+    """
+    # Check if product exists and is in stock
+    product = product_service.get(db, id=item_in.product_id)
+    if not product:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Product not found",
+        )
+    if not product.is_active:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Product is not available",
+        )
+    if product.stock < item_in.quantity:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=f"Not enough stock. Available: {product.stock}",
+        )
+
+    # Check if item already in cart
+    existing_item = cart_service.get_cart_item(
+        db, user_id=current_user.id, product_id=item_in.product_id
+    )
+
+    if existing_item:
+        # Update quantity if already in cart
+        return cart_service.update_item_quantity(
+            db,
+            db_obj=existing_item,
+            quantity=existing_item.quantity + item_in.quantity
+        )
+
+    # Add new item to cart
+    return cart_service.add_item_to_cart(
+        db,
+        obj_in=item_in,
+        user_id=current_user.id,
+        unit_price=product.price
+    )
+
+@router.put("/items/{item_id}", response_model=schemas.CartItem)
+def update_cart_item(
+    *,
+    db: Session = Depends(get_db),
+    item_id: int,
+    item_in: schemas.CartItemUpdate,
+    current_user: User = Depends(get_current_active_user),
+) -> Any:
+    """
+    Update cart item quantity.
+    """
+    cart_item = cart_service.get(db, id=item_id)
+    if not cart_item or cart_item.user_id != current_user.id:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Cart item not found",
+        )
+
+    # Check if product has enough stock
+    product = product_service.get(db, id=cart_item.product_id)
+    if product.stock < item_in.quantity:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=f"Not enough stock. Available: {product.stock}",
+        )
+
+    cart_item = cart_service.update_item_quantity(
+        db, db_obj=cart_item, quantity=item_in.quantity
+    )
+    return cart_item
+
+@router.delete("/items/{item_id}", response_model=schemas.CartItem)
+def remove_cart_item(
+    *,
+    db: Session = Depends(get_db),
+    item_id: int,
+    current_user: User = Depends(get_current_active_user),
+) -> Any:
+    """
+    Remove item from cart.
+    """
+    cart_item = cart_service.get(db, id=item_id)
+    if not cart_item or cart_item.user_id != current_user.id:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Cart item not found",
+        )
+    cart_item = cart_service.remove(db, id=item_id)
+    return cart_item
+
+@router.delete("/", response_model=List[schemas.CartItem])
+def clear_cart(
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_active_user),
+) -> Any:
+    """
+    Clear user's cart.
+    """
+    return cart_service.clear_cart(db, user_id=current_user.id)

app/api/v1/endpoints/health.py

@@ -0,0 +1,25 @@
+from typing import Dict
+
+from fastapi import APIRouter, Depends
+from sqlalchemy.orm import Session
+
+from app.api.deps import get_db
+
+router = APIRouter()
+
+@router.get("/", response_model=Dict[str, str])
+def health_check(db: Session = Depends(get_db)) -> Dict[str, str]:
+    """
+    Check service health.
+    """
+    # Try to execute a simple query to verify database connection
+    try:
+        db.execute("SELECT 1")
+        db_status = "healthy"
+    except Exception:
+        db_status = "unhealthy"
+
+    return {
+        "status": "healthy",
+        "database": db_status
+    }

app/api/v1/endpoints/orders.py

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+from typing import Any, List
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+
+from app import schemas
+from app.api.deps import get_current_active_superuser, get_current_active_user, get_db
+from app.models.user import User
+from app.services import cart_service, order_service, product_service
+
+router = APIRouter()
+
+@router.get("/", response_model=List[schemas.Order])
+def read_orders(
+    db: Session = Depends(get_db),
+    skip: int = 0,
+    limit: int = 100,
+    current_user: User = Depends(get_current_active_user),
+) -> Any:
+    """
+    Retrieve user's orders.
+    """
+    if current_user.is_superuser:
+        orders = order_service.get_multi(db, skip=skip, limit=limit)
+    else:
+        orders = order_service.get_user_orders(
+            db, user_id=current_user.id, skip=skip, limit=limit
+        )
+    return orders
+
+@router.post("/", response_model=schemas.Order)
+def create_order(
+    *,
+    db: Session = Depends(get_db),
+    order_in: schemas.OrderCreate,
+    current_user: User = Depends(get_current_active_user),
+) -> Any:
+    """
+    Create new order from user's cart.
+    """
+    # Get user's cart
+    cart_items = cart_service.get_cart_items(db, user_id=current_user.id)
+    if not cart_items:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Cart is empty",
+        )
+
+    # Check if all products have enough stock
+    for item in cart_items:
+        product = product_service.get(db, id=item.product_id)
+        if not product or not product.is_active:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail=f"Product {item.product_id} is not available",
+            )
+        if product.stock < item.quantity:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail=f"Not enough stock for product {product.name}. Available: {product.stock}",
+            )
+
+    # Create order
+    order = order_service.create_from_cart(
+        db,
+        user_id=current_user.id,
+        cart_items=cart_items,
+        shipping_address=order_in.shipping_address
+    )
+
+    # Update product stock
+    for item in order.items:
+        product = product_service.get(db, id=item.product_id)
+        product_service.update_stock(
+            db, db_obj=product, new_stock=product.stock - item.quantity
+        )
+
+    # Clear user's cart
+    cart_service.clear_cart(db, user_id=current_user.id)
+
+    return order
+
+@router.get("/{id}", response_model=schemas.Order)
+def read_order(
+    *,
+    db: Session = Depends(get_db),
+    id: int,
+    current_user: User = Depends(get_current_active_user),
+) -> Any:
+    """
+    Get order by ID.
+    """
+    order = order_service.get(db, id=id)
+    if not order:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Order not found",
+        )
+    if order.user_id != current_user.id and not current_user.is_superuser:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Not enough permissions",
+        )
+    return order
+
+@router.put("/{id}/status", response_model=schemas.Order)
+def update_order_status(
+    *,
+    db: Session = Depends(get_db),
+    id: int,
+    order_in: schemas.OrderUpdate,
+    current_user: User = Depends(get_current_active_superuser),
+) -> Any:
+    """
+    Update order status (admin only).
+    """
+    order = order_service.get(db, id=id)
+    if not order:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Order not found",
+        )
+    order = order_service.update(db, db_obj=order, obj_in=order_in)
+    return order

app/api/v1/endpoints/products.py

@@ -0,0 +1,91 @@
+from typing import Any, List
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+
+from app import schemas
+from app.api.deps import get_current_active_superuser, get_db
+from app.services import product_service
+
+router = APIRouter()
+
+@router.get("/", response_model=List[schemas.Product])
+def read_products(
+    db: Session = Depends(get_db),
+    skip: int = 0,
+    limit: int = 100,
+) -> Any:
+    """
+    Retrieve products.
+    """
+    products = product_service.get_multi(db, skip=skip, limit=limit)
+    return products
+
+@router.post("/", response_model=schemas.Product)
+def create_product(
+    *,
+    db: Session = Depends(get_db),
+    product_in: schemas.ProductCreate,
+    current_user: schemas.User = Depends(get_current_active_superuser),
+) -> Any:
+    """
+    Create new product.
+    """
+    product = product_service.create(db, obj_in=product_in)
+    return product
+
+@router.get("/{id}", response_model=schemas.Product)
+def read_product(
+    *,
+    db: Session = Depends(get_db),
+    id: int,
+) -> Any:
+    """
+    Get product by ID.
+    """
+    product = product_service.get(db, id=id)
+    if not product:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Product not found",
+        )
+    return product
+
+@router.put("/{id}", response_model=schemas.Product)
+def update_product(
+    *,
+    db: Session = Depends(get_db),
+    id: int,
+    product_in: schemas.ProductUpdate,
+    current_user: schemas.User = Depends(get_current_active_superuser),
+) -> Any:
+    """
+    Update a product.
+    """
+    product = product_service.get(db, id=id)
+    if not product:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Product not found",
+        )
+    product = product_service.update(db, db_obj=product, obj_in=product_in)
+    return product
+
+@router.delete("/{id}", response_model=schemas.Product)
+def delete_product(
+    *,
+    db: Session = Depends(get_db),
+    id: int,
+    current_user: schemas.User = Depends(get_current_active_superuser),
+) -> Any:
+    """
+    Delete a product.
+    """
+    product = product_service.get(db, id=id)
+    if not product:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Product not found",
+        )
+    product = product_service.remove(db, id=id)
+    return product

app/api/v1/endpoints/users.py

@@ -0,0 +1,76 @@
+from typing import Any, List
+
+from fastapi import APIRouter, Body, Depends, HTTPException, status
+from fastapi.encoders import jsonable_encoder
+from sqlalchemy.orm import Session
+
+from app import schemas
+from app.api.deps import get_current_active_superuser, get_current_active_user, get_db
+from app.services import user_service
+
+router = APIRouter()
+
+@router.get("/", response_model=List[schemas.User])
+def read_users(
+    db: Session = Depends(get_db),
+    skip: int = 0,
+    limit: int = 100,
+    current_user: schemas.User = Depends(get_current_active_superuser),
+) -> Any:
+    """
+    Retrieve users.
+    """
+    users = user_service.get_multi(db, skip=skip, limit=limit)
+    return users
+
+@router.get("/me", response_model=schemas.User)
+def read_user_me(
+    db: Session = Depends(get_db),
+    current_user: schemas.User = Depends(get_current_active_user),
+) -> Any:
+    """
+    Get current user.
+    """
+    return current_user
+
+@router.patch("/me", response_model=schemas.User)
+def update_user_me(
+    *,
+    db: Session = Depends(get_db),
+    full_name: str = Body(None),
+    email: str = Body(None),
+    password: str = Body(None),
+    current_user: schemas.User = Depends(get_current_active_user),
+) -> Any:
+    """
+    Update own user.
+    """
+    current_user_data = jsonable_encoder(current_user)
+    user_in = schemas.UserUpdate(**current_user_data)
+    if full_name is not None:
+        user_in.full_name = full_name
+    if email is not None:
+        user_in.email = email
+    if password is not None:
+        user_in.password = password
+    user = user_service.update(db, db_obj=current_user, obj_in=user_in)
+    return user
+
+@router.get("/{user_id}", response_model=schemas.User)
+def read_user_by_id(
+    user_id: int,
+    current_user: schemas.User = Depends(get_current_active_user),
+    db: Session = Depends(get_db),
+) -> Any:
+    """
+    Get a specific user by id.
+    """
+    user = user_service.get(db, id=user_id)
+    if user == current_user:
+        return user
+    if not current_user.is_superuser:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="The user doesn't have enough privileges"
+        )
+    return user

app/core/config.py

@@ -0,0 +1,27 @@
+from pathlib import Path
+from typing import List
+
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    API_V1_STR: str = "/api/v1"
+    PROJECT_NAME: str = "SimpleEcommerceStore"
+
+    # Database
+    DB_DIR = Path("/app/storage/db")
+    DB_DIR.mkdir(parents=True, exist_ok=True)
+    SQLALCHEMY_DATABASE_URL: str = f"sqlite:///{DB_DIR}/db.sqlite"
+
+    # JWT
+    SECRET_KEY: str = "09d25e094faa6ca2556c818166b7a9563b93f7099f6f0f4caa6cf63b88e8d3e7"
+    ALGORITHM: str = "HS256"
+    ACCESS_TOKEN_EXPIRE_MINUTES: int = 30
+
+    # CORS
+    BACKEND_CORS_ORIGINS: List[str] = ["*"]
+
+    class Config:
+        case_sensitive = True
+
+settings = Settings()

app/core/security.py

@@ -0,0 +1,28 @@
+from datetime import datetime, timedelta
+from typing import Any, Union
+
+from jose import jwt
+from passlib.context import CryptContext
+
+from app.core.config import settings
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+def create_access_token(
+    subject: Union[str, Any], expires_delta: timedelta = None
+) -> str:
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(
+            minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES
+        )
+    to_encode = {"exp": expire, "sub": str(subject)}
+    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
+    return encoded_jwt
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    return pwd_context.verify(plain_password, hashed_password)
+
+def get_password_hash(password: str) -> str:
+    return pwd_context.hash(password)

app/db/__init__.py

@@ -0,0 +1 @@
+# This file is intentionally left empty to make the directory a Python package.

app/db/deps.py

@@ -0,0 +1,62 @@
+from typing import Generator
+
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from jose import JWTError, jwt
+from pydantic import ValidationError
+from sqlalchemy.orm import Session
+
+from app.core.config import settings
+from app.db.session import SessionLocal
+from app.models.user import User
+from app.schemas.token import TokenPayload
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl=f"{settings.API_V1_STR}/auth/login")
+
+def get_db() -> Generator:
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+def get_current_user(
+    db: Session = Depends(get_db), token: str = Depends(oauth2_scheme)
+) -> User:
+    try:
+        payload = jwt.decode(
+            token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM]
+        )
+        token_data = TokenPayload(**payload)
+    except (JWTError, ValidationError):
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Could not validate credentials",
+        )
+    user = db.query(User).filter(User.id == token_data.sub).first()
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="User not found"
+        )
+    return user
+
+def get_current_active_user(
+    current_user: User = Depends(get_current_user),
+) -> User:
+    if not current_user.is_active:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Inactive user"
+        )
+    return current_user
+
+def get_current_active_superuser(
+    current_user: User = Depends(get_current_user),
+) -> User:
+    if not current_user.is_superuser:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="The user doesn't have enough privileges"
+        )
+    return current_user

app/db/session.py

@@ -0,0 +1,20 @@
+from pathlib import Path
+
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+# Create directory if it does not exist
+DB_DIR = Path("/app/storage/db")
+DB_DIR.mkdir(parents=True, exist_ok=True)
+
+SQLALCHEMY_DATABASE_URL = f"sqlite:///{DB_DIR}/db.sqlite"
+
+engine = create_engine(
+    SQLALCHEMY_DATABASE_URL,
+    connect_args={"check_same_thread": False}
+)
+
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+Base = declarative_base()

app/main.py

@@ -0,0 +1,32 @@
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from app.api.v1.api import api_router
+from app.core.config import settings
+
+app = FastAPI(
+    title=settings.PROJECT_NAME,
+    openapi_url=f"{settings.API_V1_STR}/openapi.json",
+    docs_url="/docs",
+    redoc_url="/redoc",
+)
+
+# Set all CORS enabled origins
+if settings.BACKEND_CORS_ORIGINS:
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=[str(origin) for origin in settings.BACKEND_CORS_ORIGINS],
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
+
+app.include_router(api_router, prefix=settings.API_V1_STR)
+
+@app.get("/health")
+def health_check():
+    """
+    Basic health check endpoint
+    """
+    return {"status": "healthy"}

app/models/__init__.py

@@ -0,0 +1,4 @@
+from app.models.cart import CartItem
+from app.models.order import Order, OrderItem, OrderStatus
+from app.models.product import Product
+from app.models.user import User

app/models/cart.py

@@ -0,0 +1,21 @@
+from sqlalchemy import Column, DateTime, Float, ForeignKey, Integer
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+
+from app.db.session import Base
+
+
+class CartItem(Base):
+    __tablename__ = "cart_items"
+
+    id = Column(Integer, primary_key=True, index=True)
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+    product_id = Column(Integer, ForeignKey("products.id"), nullable=False)
+    quantity = Column(Integer, nullable=False, default=1)
+    unit_price = Column(Float, nullable=False)  # Store price at the time of adding to cart
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+
+    # Relationships
+    user = relationship("User", backref="cart_items")
+    product = relationship("Product")

app/models/order.py

@@ -0,0 +1,44 @@
+import enum
+
+from sqlalchemy import Column, DateTime, Enum, Float, ForeignKey, Integer, String
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+
+from app.db.session import Base
+
+
+class OrderStatus(str, enum.Enum):
+    PENDING = "pending"
+    PAID = "paid"
+    SHIPPED = "shipped"
+    DELIVERED = "delivered"
+    CANCELLED = "cancelled"
+
+class Order(Base):
+    __tablename__ = "orders"
+
+    id = Column(Integer, primary_key=True, index=True)
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+    total_amount = Column(Float, nullable=False)
+    shipping_address = Column(String, nullable=False)
+    status = Column(Enum(OrderStatus), default=OrderStatus.PENDING)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+
+    # Relationships
+    user = relationship("User", backref="orders")
+    items = relationship("OrderItem", back_populates="order")
+
+class OrderItem(Base):
+    __tablename__ = "order_items"
+
+    id = Column(Integer, primary_key=True, index=True)
+    order_id = Column(Integer, ForeignKey("orders.id"), nullable=False)
+    product_id = Column(Integer, ForeignKey("products.id"), nullable=False)
+    quantity = Column(Integer, nullable=False)
+    unit_price = Column(Float, nullable=False)  # Price at the time of order
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+    # Relationships
+    order = relationship("Order", back_populates="items")
+    product = relationship("Product")

app/models/product.py

@@ -0,0 +1,18 @@
+from sqlalchemy import Boolean, Column, DateTime, Float, Integer, String, Text
+from sqlalchemy.sql import func
+
+from app.db.session import Base
+
+
+class Product(Base):
+    __tablename__ = "products"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String, index=True, nullable=False)
+    description = Column(Text, nullable=True)
+    price = Column(Float, nullable=False, index=True)
+    stock = Column(Integer, nullable=False, default=0)
+    image_url = Column(String, nullable=True)
+    is_active = Column(Boolean, default=True)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

app/models/user.py

@@ -0,0 +1,18 @@
+from sqlalchemy import Boolean, Column, DateTime, Integer, String
+from sqlalchemy.sql import func
+
+from app.db.session import Base
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id = Column(Integer, primary_key=True, index=True)
+    email = Column(String, unique=True, index=True, nullable=False)
+    username = Column(String, unique=True, index=True, nullable=False)
+    hashed_password = Column(String, nullable=False)
+    full_name = Column(String, index=True)
+    is_active = Column(Boolean, default=True)
+    is_superuser = Column(Boolean, default=False)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

app/schemas/__init__.py

@@ -0,0 +1,5 @@
+from app.schemas.cart import CartItem, CartItemCreate, CartItemUpdate, CartSummary
+from app.schemas.order import Order, OrderCreate, OrderItem, OrderUpdate
+from app.schemas.product import Product, ProductCreate, ProductUpdate
+from app.schemas.token import Token, TokenPayload
+from app.schemas.user import User, UserCreate, UserInDB, UserUpdate

app/schemas/cart.py

@@ -0,0 +1,38 @@
+from datetime import datetime
+from typing import List, Optional
+
+from pydantic import BaseModel, Field
+
+
+# Shared properties
+class CartItemBase(BaseModel):
+    product_id: int
+    quantity: int = Field(..., gt=0)
+
+# Properties to receive on cart item creation
+class CartItemCreate(CartItemBase):
+    pass
+
+# Properties to receive on cart item update
+class CartItemUpdate(BaseModel):
+    quantity: int = Field(..., gt=0)
+
+# Properties shared by models stored in DB
+class CartItemInDBBase(CartItemBase):
+    id: int
+    user_id: int
+    unit_price: float
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
+
+# Properties to return to client
+class CartItem(CartItemInDBBase):
+    pass
+
+# Properties to return for cart summary
+class CartSummary(BaseModel):
+    items: List[CartItem]
+    total: float

app/schemas/order.py

@@ -0,0 +1,53 @@
+from datetime import datetime
+from typing import List, Optional
+
+from pydantic import BaseModel, Field
+
+from app.models.order import OrderStatus
+
+
+# Order Item Schemas
+class OrderItemBase(BaseModel):
+    product_id: int
+    quantity: int = Field(..., gt=0)
+    unit_price: float = Field(..., gt=0)
+
+class OrderItemCreate(OrderItemBase):
+    pass
+
+class OrderItemInDBBase(OrderItemBase):
+    id: int
+    order_id: int
+    created_at: datetime
+
+    class Config:
+        from_attributes = True
+
+class OrderItem(OrderItemInDBBase):
+    pass
+
+# Order Schemas
+class OrderBase(BaseModel):
+    shipping_address: str
+    status: Optional[OrderStatus] = OrderStatus.PENDING
+
+class OrderCreate(OrderBase):
+    pass
+
+class OrderUpdate(BaseModel):
+    status: Optional[OrderStatus] = None
+    shipping_address: Optional[str] = None
+
+class OrderInDBBase(OrderBase):
+    id: int
+    user_id: int
+    total_amount: float
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+    status: OrderStatus
+
+    class Config:
+        from_attributes = True
+
+class Order(OrderInDBBase):
+    items: List[OrderItem]

app/schemas/product.py

@@ -0,0 +1,44 @@
+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel, Field
+
+
+# Shared properties
+class ProductBase(BaseModel):
+    name: Optional[str] = None
+    description: Optional[str] = None
+    price: Optional[float] = None
+    stock: Optional[int] = None
+    image_url: Optional[str] = None
+    is_active: Optional[bool] = True
+
+# Properties to receive on product creation
+class ProductCreate(ProductBase):
+    name: str
+    price: float = Field(..., gt=0)
+    stock: int = Field(..., ge=0)
+
+# Properties to receive on product update
+class ProductUpdate(ProductBase):
+    pass
+
+# Properties shared by models stored in DB
+class ProductInDBBase(ProductBase):
+    id: int
+    name: str
+    price: float
+    stock: int
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
+
+# Properties to return to client
+class Product(ProductInDBBase):
+    pass
+
+# Properties stored in DB
+class ProductInDB(ProductInDBBase):
+    pass

app/schemas/token.py

@@ -0,0 +1,11 @@
+from typing import Optional
+
+from pydantic import BaseModel
+
+
+class Token(BaseModel):
+    access_token: str
+    token_type: str
+
+class TokenPayload(BaseModel):
+    sub: Optional[int] = None

app/schemas/user.py

@@ -0,0 +1,47 @@
+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel, EmailStr, model_validator
+
+
+# Shared properties
+class UserBase(BaseModel):
+    email: Optional[EmailStr] = None
+    username: Optional[str] = None
+    is_active: Optional[bool] = True
+    is_superuser: bool = False
+    full_name: Optional[str] = None
+
+# Properties to receive via API on creation
+class UserCreate(UserBase):
+    email: EmailStr
+    username: str
+    password: str
+
+    @model_validator(mode="after")
+    def validate_username(self):
+        username = self.username
+        if len(username) < 3:
+            raise ValueError("Username must be at least 3 characters long")
+        return self
+
+# Properties to receive via API on update
+class UserUpdate(UserBase):
+    password: Optional[str] = None
+
+# Properties shared by models stored in DB
+class UserInDBBase(UserBase):
+    id: int
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
+
+# Additional properties to return via API
+class User(UserInDBBase):
+    pass
+
+# Additional properties stored in DB
+class UserInDB(UserInDBBase):
+    hashed_password: str

app/services/__init__.py

@@ -0,0 +1,4 @@
+from app.services.cart_service import cart_service
+from app.services.order_service import order_service
+from app.services.product_service import product_service
+from app.services.user_service import user_service

app/services/base.py

@@ -0,0 +1,65 @@
+from typing import Any, Dict, Generic, List, Optional, Type, TypeVar, Union
+
+from fastapi.encoders import jsonable_encoder
+from pydantic import BaseModel
+from sqlalchemy.orm import Session
+
+from app.db.session import Base
+
+ModelType = TypeVar("ModelType", bound=Base)
+CreateSchemaType = TypeVar("CreateSchemaType", bound=BaseModel)
+UpdateSchemaType = TypeVar("UpdateSchemaType", bound=BaseModel)
+
+class CRUDBase(Generic[ModelType, CreateSchemaType, UpdateSchemaType]):
+    def __init__(self, model: Type[ModelType]):
+        """
+        CRUD object with default methods to Create, Read, Update, Delete (CRUD).
+
+        **Parameters**
+
+        * `model`: A SQLAlchemy model class
+        * `schema`: A Pydantic model (schema) class
+        """
+        self.model = model
+
+    def get(self, db: Session, id: Any) -> Optional[ModelType]:
+        return db.query(self.model).filter(self.model.id == id).first()
+
+    def get_multi(
+        self, db: Session, *, skip: int = 0, limit: int = 100
+    ) -> List[ModelType]:
+        return db.query(self.model).offset(skip).limit(limit).all()
+
+    def create(self, db: Session, *, obj_in: CreateSchemaType) -> ModelType:
+        obj_in_data = jsonable_encoder(obj_in)
+        db_obj = self.model(**obj_in_data)
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+    def update(
+        self,
+        db: Session,
+        *,
+        db_obj: ModelType,
+        obj_in: Union[UpdateSchemaType, Dict[str, Any]]
+    ) -> ModelType:
+        obj_data = jsonable_encoder(db_obj)
+        if isinstance(obj_in, dict):
+            update_data = obj_in
+        else:
+            update_data = obj_in.model_dump(exclude_unset=True)
+        for field in obj_data:
+            if field in update_data:
+                setattr(db_obj, field, update_data[field])
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+    def remove(self, db: Session, *, id: int) -> ModelType:
+        obj = db.query(self.model).get(id)
+        db.delete(obj)
+        db.commit()
+        return obj

app/services/cart_service.py

@@ -0,0 +1,53 @@
+from typing import List, Optional
+
+from sqlalchemy.orm import Session
+
+from app.models.cart import CartItem
+from app.schemas.cart import CartItemCreate, CartItemUpdate
+from app.services.base import CRUDBase
+
+
+class CartService(CRUDBase[CartItem, CartItemCreate, CartItemUpdate]):
+    def get_cart_items(self, db: Session, *, user_id: int) -> List[CartItem]:
+        return db.query(CartItem).filter(CartItem.user_id == user_id).all()
+
+    def get_cart_item(
+        self, db: Session, *, user_id: int, product_id: int
+    ) -> Optional[CartItem]:
+        return (
+            db.query(CartItem)
+            .filter(CartItem.user_id == user_id, CartItem.product_id == product_id)
+            .first()
+        )
+
+    def add_item_to_cart(
+        self, db: Session, *, obj_in: CartItemCreate, user_id: int, unit_price: float
+    ) -> CartItem:
+        db_obj = CartItem(
+            user_id=user_id,
+            product_id=obj_in.product_id,
+            quantity=obj_in.quantity,
+            unit_price=unit_price
+        )
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+    def update_item_quantity(
+        self, db: Session, *, db_obj: CartItem, quantity: int
+    ) -> CartItem:
+        db_obj.quantity = quantity
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+    def clear_cart(self, db: Session, *, user_id: int) -> List[CartItem]:
+        cart_items = self.get_cart_items(db, user_id=user_id)
+        for item in cart_items:
+            db.delete(item)
+        db.commit()
+        return cart_items
+
+cart_service = CartService(CartItem)

app/services/order_service.py

@@ -0,0 +1,52 @@
+from typing import List
+
+from sqlalchemy.orm import Session
+
+from app.models.cart import CartItem
+from app.models.order import Order, OrderItem
+from app.schemas.order import OrderCreate, OrderUpdate
+from app.services.base import CRUDBase
+
+
+class OrderService(CRUDBase[Order, OrderCreate, OrderUpdate]):
+    def get_user_orders(
+        self, db: Session, *, user_id: int, skip: int = 0, limit: int = 100
+    ) -> List[Order]:
+        return (
+            db.query(Order)
+            .filter(Order.user_id == user_id)
+            .offset(skip)
+            .limit(limit)
+            .all()
+        )
+
+    def create_from_cart(
+        self, db: Session, *, user_id: int, cart_items: List[CartItem], shipping_address: str
+    ) -> Order:
+        # Calculate total amount
+        total_amount = sum(item.unit_price * item.quantity for item in cart_items)
+
+        # Create order
+        db_obj = Order(
+            user_id=user_id,
+            total_amount=total_amount,
+            shipping_address=shipping_address
+        )
+        db.add(db_obj)
+        db.flush()  # Flush to get the order ID
+
+        # Create order items
+        for cart_item in cart_items:
+            order_item = OrderItem(
+                order_id=db_obj.id,
+                product_id=cart_item.product_id,
+                quantity=cart_item.quantity,
+                unit_price=cart_item.unit_price
+            )
+            db.add(order_item)
+
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+order_service = OrderService(Order)

app/services/product_service.py

@@ -0,0 +1,36 @@
+from typing import List, Optional
+
+from sqlalchemy.orm import Session
+
+from app.models.product import Product
+from app.schemas.product import ProductCreate, ProductUpdate
+from app.services.base import CRUDBase
+
+
+class ProductService(CRUDBase[Product, ProductCreate, ProductUpdate]):
+    def get_active(self, db: Session, *, id: int) -> Optional[Product]:
+        return (
+            db.query(Product)
+            .filter(Product.id == id, Product.is_active)
+            .first()
+        )
+
+    def get_multi_active(
+        self, db: Session, *, skip: int = 0, limit: int = 100
+    ) -> List[Product]:
+        return (
+            db.query(Product)
+            .filter(Product.is_active)
+            .offset(skip)
+            .limit(limit)
+            .all()
+        )
+
+    def update_stock(self, db: Session, *, db_obj: Product, new_stock: int) -> Product:
+        db_obj.stock = new_stock
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+product_service = ProductService(Product)

app/services/user_service.py

@@ -0,0 +1,59 @@
+from typing import Any, Dict, Optional, Union
+
+from sqlalchemy.orm import Session
+
+from app.core.security import get_password_hash, verify_password
+from app.models.user import User
+from app.schemas.user import UserCreate, UserUpdate
+from app.services.base import CRUDBase
+
+
+class UserService(CRUDBase[User, UserCreate, UserUpdate]):
+    def get_by_email(self, db: Session, *, email: str) -> Optional[User]:
+        return db.query(User).filter(User.email == email).first()
+
+    def get_by_username(self, db: Session, *, username: str) -> Optional[User]:
+        return db.query(User).filter(User.username == username).first()
+
+    def create(self, db: Session, *, obj_in: UserCreate) -> User:
+        db_obj = User(
+            email=obj_in.email,
+            username=obj_in.username,
+            hashed_password=get_password_hash(obj_in.password),
+            full_name=obj_in.full_name,
+            is_active=obj_in.is_active,
+            is_superuser=obj_in.is_superuser,
+        )
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+    def update(
+        self, db: Session, *, db_obj: User, obj_in: Union[UserUpdate, Dict[str, Any]]
+    ) -> User:
+        if isinstance(obj_in, dict):
+            update_data = obj_in
+        else:
+            update_data = obj_in.model_dump(exclude_unset=True)
+        if update_data.get("password"):
+            hashed_password = get_password_hash(update_data["password"])
+            del update_data["password"]
+            update_data["hashed_password"] = hashed_password
+        return super().update(db, db_obj=db_obj, obj_in=update_data)
+
+    def authenticate(self, db: Session, *, email: str, password: str) -> Optional[User]:
+        user = self.get_by_email(db, email=email)
+        if not user:
+            return None
+        if not verify_password(password, user.hashed_password):
+            return None
+        return user
+
+    def is_active(self, user: User) -> bool:
+        return user.is_active
+
+    def is_superuser(self, user: User) -> bool:
+        return user.is_superuser
+
+user_service = UserService(User)

main.py

@@ -0,0 +1,10 @@
+from pathlib import Path
+
+import uvicorn
+
+# Ensure storage directory exists
+storage_dir = Path("/app/storage/db")
+storage_dir.mkdir(parents=True, exist_ok=True)
+
+if __name__ == "__main__":
+    uvicorn.run("app.main:app", host="0.0.0.0", port=8000, reload=True)

migrations/env.py

@@ -0,0 +1,81 @@
+from logging.config import fileConfig
+from pathlib import Path
+
+from alembic import context
+from sqlalchemy import engine_from_config, pool
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+from app.db.session import Base
+
+target_metadata = Base.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+# Ensure SQLite directory exists
+DB_DIR = Path("/app/storage/db")
+DB_DIR.mkdir(parents=True, exist_ok=True)
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection, target_metadata=target_metadata
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

migrations/script.py.mako

@@ -0,0 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}

migrations/versions/01_initial_migration.py

@@ -0,0 +1,122 @@
+"""Initial migration
+
+Revision ID: 01_initial_migration
+Revises: None
+Create Date: 2023-12-22 10:00:00.000000
+
+"""
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = '01_initial_migration'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # Create users table
+    op.create_table(
+        'users',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('email', sa.String(), nullable=False),
+        sa.Column('username', sa.String(), nullable=False),
+        sa.Column('hashed_password', sa.String(), nullable=False),
+        sa.Column('full_name', sa.String(), nullable=True),
+        sa.Column('is_active', sa.Boolean(), nullable=True, default=True),
+        sa.Column('is_superuser', sa.Boolean(), nullable=True, default=False),
+        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=True),
+        sa.Column('updated_at', sa.DateTime(timezone=True), nullable=True),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_users_email'), 'users', ['email'], unique=True)
+    op.create_index(op.f('ix_users_username'), 'users', ['username'], unique=True)
+    op.create_index(op.f('ix_users_id'), 'users', ['id'], unique=False)
+    op.create_index(op.f('ix_users_full_name'), 'users', ['full_name'], unique=False)
+
+    # Create products table
+    op.create_table(
+        'products',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('name', sa.String(), nullable=False),
+        sa.Column('description', sa.Text(), nullable=True),
+        sa.Column('price', sa.Float(), nullable=False),
+        sa.Column('stock', sa.Integer(), nullable=False, default=0),
+        sa.Column('image_url', sa.String(), nullable=True),
+        sa.Column('is_active', sa.Boolean(), nullable=True, default=True),
+        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=True),
+        sa.Column('updated_at', sa.DateTime(timezone=True), nullable=True),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_products_id'), 'products', ['id'], unique=False)
+    op.create_index(op.f('ix_products_name'), 'products', ['name'], unique=False)
+    op.create_index(op.f('ix_products_price'), 'products', ['price'], unique=False)
+
+    # Create cart_items table
+    op.create_table(
+        'cart_items',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('user_id', sa.Integer(), nullable=False),
+        sa.Column('product_id', sa.Integer(), nullable=False),
+        sa.Column('quantity', sa.Integer(), nullable=False, default=1),
+        sa.Column('unit_price', sa.Float(), nullable=False),
+        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=True),
+        sa.Column('updated_at', sa.DateTime(timezone=True), nullable=True),
+        sa.ForeignKeyConstraint(['product_id'], ['products.id'], ),
+        sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_cart_items_id'), 'cart_items', ['id'], unique=False)
+
+    # Create orders table
+    op.create_table(
+        'orders',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('user_id', sa.Integer(), nullable=False),
+        sa.Column('total_amount', sa.Float(), nullable=False),
+        sa.Column('shipping_address', sa.String(), nullable=False),
+        sa.Column('status', sa.Enum('pending', 'paid', 'shipped', 'delivered', 'cancelled', name='orderstatus'), nullable=True, default='pending'),
+        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=True),
+        sa.Column('updated_at', sa.DateTime(timezone=True), nullable=True),
+        sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_orders_id'), 'orders', ['id'], unique=False)
+
+    # Create order_items table
+    op.create_table(
+        'order_items',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('order_id', sa.Integer(), nullable=False),
+        sa.Column('product_id', sa.Integer(), nullable=False),
+        sa.Column('quantity', sa.Integer(), nullable=False),
+        sa.Column('unit_price', sa.Float(), nullable=False),
+        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=True),
+        sa.ForeignKeyConstraint(['order_id'], ['orders.id'], ),
+        sa.ForeignKeyConstraint(['product_id'], ['products.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_order_items_id'), 'order_items', ['id'], unique=False)
+
+
+def downgrade():
+    op.drop_index(op.f('ix_order_items_id'), table_name='order_items')
+    op.drop_table('order_items')
+
+    op.drop_index(op.f('ix_orders_id'), table_name='orders')
+    op.drop_table('orders')
+
+    op.drop_index(op.f('ix_cart_items_id'), table_name='cart_items')
+    op.drop_table('cart_items')
+
+    op.drop_index(op.f('ix_products_price'), table_name='products')
+    op.drop_index(op.f('ix_products_name'), table_name='products')
+    op.drop_index(op.f('ix_products_id'), table_name='products')
+    op.drop_table('products')
+
+    op.drop_index(op.f('ix_users_full_name'), table_name='users')
+    op.drop_index(op.f('ix_users_id'), table_name='users')
+    op.drop_index(op.f('ix_users_username'), table_name='users')
+    op.drop_index(op.f('ix_users_email'), table_name='users')
+    op.drop_table('users')

pyproject.toml

@@ -0,0 +1,13 @@
+[tool.ruff]
+line-length = 100
+target-version = "py39"
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "W"]
+ignore = ["E203", "E501", "E402"] # E203 for black compatibility, E501 for line length, E402 for imports not at top
+
+[tool.ruff.lint.isort]
+known-third-party = ["fastapi", "pydantic", "sqlalchemy", "alembic", "jose", "passlib"]
+
+[tool.ruff.lint.per-file-ignores]
+"__init__.py" = ["F401"] # Ignore unused imports in __init__.py files

requirements.txt

@@ -0,0 +1,13 @@
+fastapi==0.108.0
+uvicorn==0.25.0
+sqlalchemy==2.0.25
+pydantic==2.5.3
+pydantic-settings==2.1.0
+python-jose==3.3.0
+passlib==1.7.4
+bcrypt==4.1.1
+python-multipart==0.0.6
+alembic==1.13.1
+ruff==0.1.11
+pytest==7.4.4
+httpx==0.26.0