Blog API (FastAPI + PostgreSQL)

This is a production-ready backend API designed to power modern blogging platforms. Built with FastAPI, it’s high-performance, easy to scale, and comes packed with features like JWT authentication, nested commenting, and even an AI-driven recommendation engine.

---

Features

🔐 Authentication

• User Register & Login (JWT)
• Password hashing (bcrypt)
• Protected routes

📝 Blog System

• Create / Read / Update / Delete posts
• User-based authorization

💬 Comments

• Add comments on posts
• Nested replies
• Delete own comments

❤️ Engagement

• Like / Unlike posts
• Bookmark posts

🔎 Search & Filter

• Search posts by title
• Filter by user

📊 Analytics

• Total posts count

📁 File Upload

• Upload blog images

🤖 AI Recommendation

• Recommend similar posts using TF-IDF + cosine similarity

---

🛠️ Tech Stack

• FastAPI
• PostgreSQL
• SQLAlchemy
• JWT Authentication
• Scikit-learn (AI feature)

---

⚙️ Installation

cd blog-api
python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt

---

🔐 Environment Variables

Create .env file:

DATABASE_URL=postgresql://blog_user:1234@localhost/blog_db
SECRET_KEY=your_secret_key
ALGORITHM=HS256
ACCESS_TOKEN_EXPIRE_MINUTES=30

---

▶️ Run Server

uvicorn app.main:app --reload

---

📌 API Docs

Swagger UI: http://127.0.0.1:8000/docs

---

📂 Project Structure

app/
 ├── models/    # Database tables (SQLAlchemy)
 ├── schemas/   # Data validation (Pydantic)
 ├── routes/    # API Endpoints (Auth, Posts, Comments)
 ├── core/      # Security & Config settings
 ├── db/        # Database connection & session

---

🎯 Future Improvements

• Redis caching
• Docker support
• AWS S3 file upload
• Advanced analytics dashboard