📖 SwipeBooks – Book Discovery App

A React Native mobile app for discovering books through a Tinder-style swipe interface. Swipe right to add to your reading list, left to skip. Built with a recommendation engine, gamification system, and real-time Firebase sync.

⚙️ Tech Stack

• React Native + Expo (SDK 51+)
• Firebase Authentication + Cloud Firestore
• Django REST API + Supabase PostgreSQL (book data)
• React Navigation v6 (Stack + Bottom Tabs)
• Reanimated 2 (60fps swipe animations on UI thread)
• AsyncStorage (local rate limiting)

💡 Features

• Tinder-style swipe cards with haptic feedback
• Infinite pagination — new pages load silently as you swipe
• Batch Firestore writes (10 swipes → 1 write, reduces cost)
• Barcode scanner (EAN-13) for ISBN lookup
• Recommendation engine weighted by swipe/save behavior
• Gamification: points, 7 levels, streak tracking, badges
• Rate limiting (client-side, no server required)
• Weekly popularity ranking from aggregated like events

🏗️ Architecture

React Native frontend communicates with two backends:

• Book data: Django REST API + Supabase PostgreSQL
• User data: Firebase Firestore (favorites, streaks, swipe history, points)

🔒 Security

Firebase Auth gates all Firestore access. Security rules enforce:

• Users write only to their own users/{uid} subcollections
• items collection is read-only for authenticated users
• userPoints: max ±15 points per write, all fields ≥ 0
• likeEvents: document ID format {uid}_{bookId} enforced

🔗 Related

• Backend: SwipeBooksBackend

🚀 Getting Started

git clone https://github.com/Busrwa/swipeit.git
cd swipeit
npm install
npx expo install expo-linear-gradient expo-haptics expo-camera
# Add your Firebase config to firebaseConfig.js
npx expo start --clear