Mini E-Commerce API (FastAPI + JWT) - project 1

🚀 Project: Mini E-Commerce API (FastAPI + JWT)
🎯 What you’re building

A backend system with:

Users (auth system)
Products (CRUD)
Orders (user purchases)
JWT authentication
Clean architecture (like real production APIs)
🧱 Tech Stack
Python 3.11+
FastAPI
SQLAlchemy (ORM)
SQLite (start) → PostgreSQL later
JWT (python-jose)
Passlib (password hashing)
📁 Clean Project Structure (IMPORTANT)
app/
├── main.py
├── core/
│ ├── config.py
│ ├── security.py
│
├── database/
│ ├── db.py
│
├── models/
│ ├── user.py
│ ├── product.py
│ ├── order.py
│
├── schemas/
│ ├── user.py
│ ├── product.py
│ ├── order.py
│
├── routes/
│ ├── auth.py
│ ├── users.py
│ ├── products.py
│ ├── orders.py
│
├── services/
│ ├── user_service.py
│ ├── product_service.py
│ ├── order_service.py
│
├── dependencies/
│ ├── auth.py

This structure alone already makes your project look “production-grade”.

🔐 Features Breakdown
👤 Auth System
Register user
Login user
Password hashing (bcrypt)
JWT token generation
Protected routes
🛍️ Products (CRUD)
Create product (admin only)
Get all products (public)
Get single product
Update product (admin only)
Delete product (admin only)
🧾 Orders
Create order (user)
View own orders
Admin sees all orders
🔑 Core Learning Flow (build in this order)
STEP 1 — Setup
pip install fastapi uvicorn sqlalchemy passlib python-jose
STEP 2 — Run FastAPI

app/main.py

from fastapi import FastAPI

app = FastAPI()

@app.get("/")
def root():
return {"message": "API is running"}

Run:

uvicorn app.main:app --reload
STEP 3 — Add Database

Create SQLAlchemy models first (User, Product, Order)

STEP 4 — Auth (MOST IMPORTANT)
Register endpoint
Login endpoint
JWT token creation
Middleware to protect routes
STEP 5 — Products CRUD

Build full CRUD using:

routes
services layer (important for clean code)
STEP 6 — Orders System
User creates order from product
Reduce stock
Save order history