Social Media App

React Native (Expo) frontend and Flask backend with SQLite. Auth flow: Login/Register → Home.

Structure

• backend/ – Flask API (auth, SQLite)
• frontend/ – React Native (Expo) app

Quick start

From the repo root (this folder):

1. Start backend (creates venv and runs Flask on http://localhost:5000):

   .\start-backend.ps1

2. Start frontend (installs deps and runs Expo):

   .\start-frontend.ps1

Use two terminals so both run at once. In Expo, press a for Android or i for iOS simulator, or scan the QR code with Expo Go.

Backend (Flask)

• Port: 5000
• Endpoints: POST /api/auth/register, POST /api/auth/login, GET /api/auth/me (Bearer token)
• DB: SQLite at backend/instance/social_media.db (created on first run)

Manual run:

cd backend
python -m venv venv
.\venv\Scripts\Activate.ps1
pip install -r requirements.txt
python run.py

Frontend (React Native)

• Login and Register screens; JWT stored in AsyncStorage.
• After login, app shows Home screen with user info and Sign out.
• API base URL: http://localhost:5000 (iOS simulator); use http://10.0.2.2:5000 for Android emulator (configured in frontend/src/config/api.js).

Manual run:

cd frontend
npm install
npx expo start

Auth flow

1. Open app → Login (or Register).
2. On success, JWT is saved and app navigates to Home.
3. On next launch, token is read and user stays logged in until Sign out.