A comprehensive social network platform for travelers to discover, share, and plan authentic city experiences
Features β’ Tech Stack β’ Getting Started β’ Architecture β’ DevOps
- Overview
- Key Features
- Technology Stack
- System Architecture
- Getting Started
- Development
- Testing
- DevOps & Deployment
- Security & Accessibility
- Project Statistics
CityPulse is a full-stack web application designed to revolutionize how travelers discover and share authentic city experiences. Built as a Software Development Capstone project, it combines modern web technologies with robust security practices and comprehensive testing.
Traditional travel guides often miss the authentic, local experiences that make each city unique. CityPulse bridges this gap by:
- πΊοΈ Enabling travelers to share genuine recommendations beyond tourist traps
- π€ Connecting like-minded travelers through a Travel Buddy system
- π Facilitating collaborative trip planning with detailed itineraries
- π Gamifying travel experiences through achievements and badges
- π‘οΈ Maintaining community quality through robust moderation tools
Travelers - Create recommendations, connect with buddies, plan trips, and earn achievements
Moderators - Review reports, manage content, issue warnings, and maintain community standards
π Authentication & Account Management
- β Secure registration with email verification
- β JWT-based authentication (15-minute sessions)
- β Google OAuth 2.0 integration
- β Password reset with 6-digit security codes
- β Remember Me with refresh tokens
- β Account deactivation & reactivation
- β GDPR-compliant data deletion requests
π€ User Profile Management
- β Comprehensive profile customization
- β Profile & cover photo upload with cropping
- β Social media integration (Instagram, Facebook, LinkedIn, etc.)
- β Travel preferences & interests
- β Privacy controls (profile visibility, location sharing)
- β Cities visited tracking with statistics
- β Profile completion indicator
ποΈ City Recommendations System
- β
Create rich recommendations with:
- Title, description, category, location (lat/long)
- Up to 5 photos with captions & reordering
- Price range, difficulty level, duration
- Best time to visit & seasonal tips
- β Full CRUD operations for own content
- β Visibility controls (public/private/friends-only)
- β Category tagging (food, attractions, nature, entertainment)
π Advanced Search & Discovery
- β Multi-filter search (location, category, price, difficulty, tags)
- β Real-time autocomplete with search history
- β Saved searches for quick access
- β Infinite scroll pagination
- β Sort by relevance, rating, date, popularity
- β Date range filtering
- β Keyboard navigation support
π¬ Content Interaction
- β Like/Unlike with real-time counters
- β Save/Bookmark to personal collections
- β Star ratings (1-5 stars)
- β View count tracking
- β Social media sharing
- β Content reporting system
π€ Travel Buddy System
- β Send/accept/decline connection requests
- β View connected buddies list
- β Access social media links (connections only)
- β Real-time buddy request notifications
- β Block & report users
- β Privacy-first contact sharing
βοΈ Trip Planning Features
- β
Create collaborative trips with:
- Trip name, dates, destinations, description
- Multi-city itinerary support
- Day-by-day activity planning
- β Add travel companions
- β Link saved recommendations to trips
- β Trip privacy controls
- β Companion finder feature
- β Share trips with non-users
π Achievement System
- β Unlock badges based on milestones
- β Visual progress tracking
- β AI-generated badge images
- β Display badges on profile
- β Real-time unlock notifications
- β Leaderboard for top contributors
- β Multiple achievement types (cities visited, recommendations created, likes received)
π± Personalized Experience
- β Algorithm-based personalized feed
- β Discovery feeds (trending, popular, seasonal)
- β Real-time WebSocket notifications
- β Activity history tracking
- β User engagement metrics
π‘οΈ Moderation System
- β Dedicated moderator dashboard
- β Content report queue with review workflow
- β Approve/reject reports with notes
- β Remove inappropriate content
- β Three-tier warning system
- β Temporary suspensions with durations
- β Permanent bans with appeal process
- β User reinstatement capabilities
- β Complete audit trail of moderation actions
React 19.1.1 - Modern UI framework
React Router Dom 7.9.1 - Client-side routing
TailwindCSS 4.1.13 - Utility-first CSS framework
Vite - Lightning-fast build tool
Socket.io-client 4.8.1 - Real-time WebSocket communication
Lucide React 0.544.0 - Beautiful icon library
React Easy Crop 5.5.5 - Image cropping functionality
Cypress - E2E testing framework
Node.js - Runtime environment
Express.js - Web application framework
TypeScript - Type-safe JavaScript
PostgreSQL - Relational database
JWT & bcrypt - Authentication & encryption
Socket.io 4.8.1 - WebSocket server
Multer - File upload handling
Sharp - Image processing & optimization
SendGrid - Email service
Jest - Unit & integration testing
Docker & Docker Compose - Containerization
GitHub Actions - CI/CD pipelines
DigitalOcean - Cloud hosting
Nginx - Reverse proxy & load balancing
SSL/TLS - Secure HTTPS connections
pnpm - Fast, disk-efficient package manager
OWASP ZAP - Security testing
Axe & Lighthouse - Accessibility auditing
ESLint & Prettier - Code quality & formatting
Parameterized SQL queries - SQL injection prevention
Helmet.js - Security headers
Rate limiting - DDoS protection
flowchart TB
%% ============================================
%% Internet & Client Layer
%% ============================================
CLIENT["π Client Browser"]
DOMAIN["π city-pulse.app<br/>SSL/TLS (Let's Encrypt)"]
%% ============================================
%% CI/CD Pipeline (GitHub Actions)
%% ============================================
subgraph CICD["β‘ GitHub Actions CI/CD Pipeline"]
direction TB
TRIGGER["π Triggers<br/>β’ Push: main, production<br/>β’ PR: main"]
subgraph JOB1["π§ͺ Job 1: Test & Quality"]
direction LR
T1["π¦ Checkout<br/>actions/checkout@v4"]
T2["π§ Setup Node 20<br/>pnpm 10.10.0"]
T3["π₯ Install deps<br/>pnpm install"]
T4["π Lint<br/>ESLint + Prettier"]
T5["ποΈ Build<br/>TypeScript + Vite"]
end
subgraph JOB2["π³ Job 2: Build Images"]
direction LR
B1["π‘ Prepare names<br/>REPO_LOWER"]
B2["ποΈ Docker Buildx<br/>linux/amd64"]
B3["π Login GHCR<br/>ghcr.io"]
B4["π¦ Build Backend<br/>backend/Dockerfile.prod"]
B5["π¦ Build Frontend<br/>frontend/Dockerfile.prod"]
B6["β¬οΈ Push to GHCR<br/>ghcr.io/citypulse-backend:v1.2.3<br/>ghcr.io/citypulse-frontend:v1.2.3"]
end
subgraph JOB3["π Job 3: Deploy"]
direction LR
D1["π Create package<br/>.env.prod + docker-compose.prod.yml"]
D2["π¦ Tar archive<br/>deploy-v1.2.3.tar.gz"]
D3["π€ SCP Upload<br/>β /opt/citypulse"]
D4["π SSH Deploy<br/>root@[Production Droplet]"]
D5["π³ Docker compose up<br/>--env-file .env.prod"]
D6["β
Health check<br/>timeout 300s"]
end
JOB4["π’ Job 4: Notify<br/>β
city-pulse.app/health"]
TRIGGER --> T1
T1 --> T2 --> T3 --> T4 --> T5
T5 -.-> B1
B1 --> B2 --> B3 --> B4 --> B5 --> B6
B6 -.-> D1
D1 --> D2 --> D3 --> D4 --> D5 --> D6
D6 -.-> JOB4
end
%% ============================================
%% DigitalOcean Droplet Infrastructure
%% ============================================
subgraph DROPLET["π¦ DigitalOcean Droplet<br/>Production Server β’ /opt/citypulse"]
direction TB
subgraph NGINX_LAYER["π Nginx Reverse Proxy"]
NGINX["citypulse-nginx-prod<br/>nginx:1.25-alpine<br/>Ports: 80, 443<br/>nginx-domain.conf<br/>Rate Limit: 10r/s"]
end
subgraph DOCKER_NET["π Docker Network: citypulse-network"]
direction TB
subgraph APP_SERVICES["π― Application Services"]
direction LR
BACKEND["π§ citypulse-backend-prod<br/>ghcr.io/citypulse-backend:v1.2.3<br/>Port: 5000<br/>JWT + WebSocket<br/>Health: /health"]
FRONTEND["βοΈ citypulse-frontend-prod<br/>ghcr.io/citypulse-frontend:v1.2.3<br/>Port: 3001β80<br/>Vite + Tailwind<br/>Health: localhost:80"]
end
POSTGRES["ποΈ citypulse-postgres-prod<br/>postgres:15-alpine<br/>Port: 5432<br/>21+ Tables<br/>Health: pg_isready"]
end
subgraph VOLUMES["πΎ Persistent Volumes"]
VOL1["postgres_data"]
VOL2["uploads_data"]
VOL3["letsencrypt"]
end
NGINX --> BACKEND
NGINX --> FRONTEND
BACKEND <--> POSTGRES
FRONTEND -.depends.-> BACKEND
POSTGRES -.mount.-> VOL1
BACKEND -.mount.-> VOL2
NGINX -.mount.-> VOL3
end
%% ============================================
%% External Services
%% ============================================
subgraph EXTERNAL["π External Services"]
direction TB
GOOGLE["π Google OAuth"]
EMAIL["π§ SendGrid API"]
GHCR["π¦ GitHub Container Registry<br/>ghcr.io/citypulse-*"]
end
%% ============================================
%% Main Flow Connections
%% ============================================
CLIENT -->|HTTPS| DOMAIN
DOMAIN -->|443| NGINX
BACKEND -->|OAuth| GOOGLE
BACKEND -->|Emails| EMAIL
D4 -.SSH.-> DROPLET
GHCR -.docker-pull.-> DOCKER_NET
JOB2 -.images.-> GHCR
%% ============================================
%% Environment & Health
%% ============================================
ENVVARS["βοΈ .env.prod<br/>JWT_SECRET β’ POSTGRES_*<br/>GOOGLE_* β’ EMAIL_*"]
HC["β€οΈ Health Dashboard<br/>pg_isready β’ /health<br/>wget localhost β’ nginx"]
ENVVARS -.inject.-> BACKEND
ENVVARS -.inject.-> FRONTEND
ENVVARS -.inject.-> POSTGRES
HC -.monitor.-> POSTGRES
HC -.monitor.-> BACKEND
HC -.monitor.-> FRONTEND
HC -.monitor.-> NGINX
%% ============================================
%% Production-Grade Color Scheme (High Contrast)
%% ============================================
style CLIENT fill:#dbeafe,stroke:#1e40af,stroke-width:3px
style DOMAIN fill:#fef3c7,stroke:#b45309,stroke-width:3px
style CICD fill:#f8fafc,stroke:#1e293b,stroke-width:3px
style DROPLET fill:#fefce8,stroke:#a16207,stroke-width:4px
style NGINX_LAYER fill:#dcfce7,stroke:#166534,stroke-width:2px
style DOCKER_NET fill:#eff6ff,stroke:#1d4ed8,stroke-width:2px
style APP_SERVICES fill:#fef3c7,stroke:#b45309,stroke-width:2px
style VOLUMES fill:#f3e8ff,stroke:#7c3aed,stroke-width:2px
style EXTERNAL fill:#fecaca,stroke:#b91c1c,stroke-width:2px
style NGINX fill:#10b981,stroke:#047857,stroke-width:3px,color:#000
style BACKEND fill:#f97316,stroke:#c2410c,stroke-width:3px,color:#fff
style FRONTEND fill:#3b82f6,stroke:#1d4ed8,stroke-width:3px,color:#fff
style POSTGRES fill:#8b5cf6,stroke:#6d28d9,stroke-width:3px,color:#fff
style GOOGLE fill:#ef4444,stroke:#dc2626,stroke-width:2px,color:#fff
style EMAIL fill:#10b981,stroke:#047857,stroke-width:2px,color:#fff
style GHCR fill:#1f2937,stroke:#111827,stroke-width:2px,color:#fff
style JOB1 fill:#dcfce7,stroke:#166534,stroke-width:2px
style JOB2 fill:#eff6ff,stroke:#1d4ed8,stroke-width:2px
style JOB3 fill:#fef3c7,stroke:#b45309,stroke-width:2px
style JOB4 fill:#10b981,stroke:#047857,stroke-width:2px,color:#fff
style ENVVARS fill:#f3e8ff,stroke:#7c3aed,stroke-width:2px
style HC fill:#fecaca,stroke:#b91c1c,stroke-width:2px
π View in interactive full-screen editor (click to expand instructions)
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- Click β
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Ctrl+A(Select All) thenCtrl+C(Copy) - Click β
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Ctrl+V(Paste) β Enjoy the interactive diagram! π
Alternative: View diagram source file in this repository
Architecture Highlights:
π Request Flow:
User β city-pulse.app β Nginx (SSL/TLS) β Route by Path:
β’ / β Frontend Container (React SPA)
β’ /api/* β Backend Container (Express API)
β’ /socket.io β Backend Container (WebSocket)
π³ Containerized Application (Docker Compose):
- Frontend Container (Port 3001): React 19.1 SPA with TailwindCSS, optimized Vite builds
- Backend Container (Port 5001): Express.js + TypeScript API with integrated Socket.io WebSocket server
πΎ Data & Services:
- PostgreSQL 15: Managed DigitalOcean database with 21+ normalized tables, automated daily backups
- Volume Storage: Persistent uploads directory with Sharp image processing
- SendGrid API: Transactional email service for notifications
π Security & Performance:
- SSL/TLS certificates via Let's Encrypt with automated renewal
- Nginx rate limiting, security headers, and Gzip compression
- JWT authentication (15-minute expiry) with refresh token rotation
- Parameterized SQL queries preventing injection attacks
- CORS configuration for trusted origins only
π CI/CD Pipeline:
- GitHub Actions automated deployment on tagged releases
- 230+ test cases (unit, integration, E2E) with 85%+ coverage
- Security scanning (OWASP ZAP) and accessibility audits
- Multi-stage Docker builds for optimized images
- Health check monitoring at
/healthendpoint
- React 19.1 with functional components and hooks
- React Router v7 for client-side routing
- TailwindCSS v4 for responsive, utility-first styling
- Vite for fast development and optimized production builds
- Socket.io Client for real-time bidirectional communication
- Node.js + Express.js RESTful API server
- TypeScript for type safety and better developer experience
- PostgreSQL 14+ with 21 normalized tables
- Socket.io Server for WebSocket connections
- JWT Authentication with bcrypt password hashing
- Multer + Sharp for file uploads and image processing
- Docker Multi-Stage Builds for optimized container images
- Docker Compose for orchestrating microservices
- Nginx as reverse proxy with SSL/TLS termination
- GitHub Actions for automated CI/CD pipelines
- DigitalOcean for cloud hosting and managed PostgreSQL
- Let's Encrypt for free, automated SSL certificates
- 21+ Tables with proper normalization and indexing
- Core Entities: Users, Recommendations, Trips, Achievements
- Social Features: Buddy Connections, Likes, Saves, Ratings
- Moderation: Reports, Warnings, Actions, Audit Trails
- No ORM - Direct parameterized SQL for optimal performance
- MVC Architecture - Separation of concerns
- RESTful API Design - Standard HTTP methods and status codes
- JWT Token-Based Auth - Stateless authentication
- Middleware Pipeline - Request validation and error handling
- Service Layer Pattern - Business logic encapsulation
- Repository Pattern - Data access abstraction
Ensure you have the following installed:
- Node.js 18+ and pnpm 10.10.0+
- Docker and Docker Compose
- PostgreSQL 14+
- Git
-
Clone the repository
git clone https://github.com/NevilPatel01/CityPulse.git cd capstone-project-NevilPatel01 -
Install dependencies
pnpm install
-
Set up environment variables
# Backend (.env) cp backend/.env.example backend/.env # Frontend (.env) cp frontend/.env.example frontend/.env
-
Start Docker services
pnpm docker:dev
-
Initialize the database
pnpm --filter backend db:init
-
Start development servers
pnpm dev
-
Access the application
- Frontend: http://localhost:3001
- Backend API: http://localhost:5001
- API Health: http://localhost:5001/health
# Start all services with live reload
docker-compose -f docker-compose.dev.yml up --build
# Stop services
docker-compose -f docker-compose.dev.yml down# Build and start production services
docker-compose -f docker-compose.prod.yml up --build -d
# View logs
docker-compose -f docker-compose.prod.yml logs -f
# Stop services
docker-compose -f docker-compose.prod.yml down# Run tests in isolated environment
docker-compose -f docker-compose.test.yml up --build --abort-on-container-exitcapstone-project/
βββ backend/ # Express.js API server
β βββ src/
β β βββ controllers/ # Route handlers
β β βββ services/ # Business logic
β β βββ middleware/ # Auth, validation, error handling
β β βββ routes/ # API routes
β β βββ validators/ # Input validation schemas
β β βββ websocket/ # Socket.io handlers
β β βββ tests/ # Jest test suites
β βββ sql/ # Database schemas & migrations
β βββ uploads/ # User-uploaded files
βββ frontend/ # React SPA
β βββ src/
β β βββ components/ # Reusable UI components
β β βββ pages/ # Route-level pages
β β βββ contexts/ # React Context providers
β β βββ hooks/ # Custom React hooks
β β βββ utils/ # Helper functions
β βββ cypress/ # E2E test specs
βββ nginx/ # Reverse proxy configuration
βββ docs/ # Project documentation
pnpm dev # Start frontend + backend in dev mode
pnpm build # Build both projects for production
pnpm lint # Run linters on both projects
pnpm lint:fix # Auto-fix linting issuespnpm --filter backend dev # Start dev server with hot reload
pnpm --filter backend build # Compile TypeScript
pnpm --filter backend test # Run all tests
pnpm --filter backend test:coverage # Generate coverage report
pnpm --filter backend db:init # Initialize database schema
pnpm --filter backend db:reset # Reset and re-seed databasepnpm --filter frontend dev # Start Vite dev server
pnpm --filter frontend build # Production build
pnpm --filter frontend test:e2e # Run Cypress E2E tests
pnpm --filter frontend test:open # Open Cypress UI
pnpm --filter frontend a11y:check # Run accessibility audit# Initialize schema
pnpm --filter backend db:init
# Reset database (β οΈ Deletes all data)
pnpm --filter backend db:reset
# Run migrations
cd backend/sql && ./reset-and-seed-database.sh
# Create moderator account
psql $DATABASE_URL -f backend/sql/create-moderator.sql| Component | Coverage | Tests | Status |
|---|---|---|---|
| Backend API | 85%+ | 150+ | β Passing |
| Frontend E2E | 90%+ | 80+ | β Passing |
| Security | 100% | 25+ | β Passing |
| Accessibility | WCAG AA | Full | β Compliant |
# Run all backend tests
pnpm --filter backend test
# Run specific test suites
pnpm --filter backend test:auth
pnpm --filter backend test:recommendations
pnpm --filter backend test:social
pnpm --filter backend test:security
# Generate coverage report
pnpm --filter backend test:coverage
# View HTML coverage report
pnpm --filter backend test:coverage:html# Run all Cypress tests (headless)
pnpm --filter frontend test:e2e
# Open Cypress UI
pnpm --filter frontend test:open
# Run specific test suites
pnpm --filter frontend test:auth
pnpm --filter frontend test:profile
pnpm --filter frontend test:social# Run Axe accessibility audit
pnpm --filter frontend a11y:check
# Run Lighthouse audit
pnpm --filter frontend a11y:lighthouse:local# Run security audit
pnpm --filter backend security:audit
# Check dependency vulnerabilities
pnpm --filter backend security:deps
# Full security test suite
pnpm --filter backend security:fullCoverage reports are automatically generated in:
- Backend:
backend/coverage/lcov-report/index.html - Frontend:
frontend/coverage/index.html
Live URLs
- π Website: https://city-pulse.app
- π API: https://api.city-pulse.app
- π Health Check: https://api.city-pulse.app/health
- Hosting: DigitalOcean Droplets
- Database: Managed PostgreSQL
- Reverse Proxy: Nginx
- SSL/TLS: Let's Encrypt (Auto-renewal)
- CDN: Not used
-
Build production images
docker-compose -f docker-compose.prod.yml build
-
Push to container registry
docker tag citypulse-backend:latest registry/citypulse-backend:v1.0.0 docker push registry/citypulse-backend:v1.0.0
-
Deploy to production server
ssh production-server cd /opt/citypulse docker-compose -f docker-compose.prod.yml pull docker-compose -f docker-compose.prod.yml up -d -
Run database migrations
docker exec citypulse-backend pnpm db:migrate
GitHub Actions Workflows
# Automated Pipeline Stages:
1. Code Quality
ββ ESLint & Prettier formatting
ββ TypeScript type checking
ββ Code standards enforcement
2. Testing Suite (230+ Tests)
ββ Backend: Jest unit & integration tests
ββ Frontend: Cypress E2E tests
ββ Security: OWASP ZAP penetration testing
ββ Accessibility: Axe & Lighthouse audits
3. Build Process
ββ Multi-stage Docker builds
ββ Image optimization & compression
ββ Frontend bundling with Vite
ββ Backend TypeScript compilation
4. Deployment
ββ Automated on tagged releases
ββ Zero-downtime deployment
ββ Database migration checks
ββ Health check verification
5. Post-Deployment
ββ Smoke tests
ββ Performance monitoring
ββ Error tracking & loggingContainer Registry & Version Control
- Docker images tagged with git SHA and version numbers
- Rollback capability to previous stable versions
- Automated vulnerability scanning of dependencies
- π JWT tokens with 15-minute expiration
- π Refresh tokens for persistent sessions
- π bcrypt password hashing (10 rounds)
- π‘οΈ Role-based access control (User, Moderator)
- π« Rate limiting to prevent brute force attacks
- π SQL injection prevention via parameterized queries
- π§Ή XSS protection through input sanitization
- π‘οΈ CSRF protection with SameSite cookies
- π Helmet.js for security headers
- π Input validation using Joi/Zod schemas
- πͺπΊ GDPR compliant data deletion
- π Encrypted sensitive data in database
- π΅οΈ Anonymous analytics only
- π§ Email verification for account creation
- π« User blocking and privacy controls
- β Semantic HTML5 structure
- β ARIA labels and descriptions
- β Skip navigation links
- β Alt text for all images
- β Form labels and error messages
- β Tab order optimization
- β Focus indicators
- β Keyboard shortcuts
- β Escape to close modals
- β Arrow key navigation in lists
- β Color contrast ratios (4.5:1 minimum)
- β Resizable text (up to 200%)
- β Dark mode support
- β Focus-visible indicators
- β No reliance on color alone
- Axe DevTools - Automated a11y testing
- Lighthouse - Performance & accessibility audits
- WAVE - Web accessibility evaluation
- Screen readers - NVDA, JAWS, VoiceOver
| Route | Description |
|---|---|
/ |
Landing page with app showcase |
/login |
User authentication |
/signup |
New user registration |
/reset-password |
Password reset flow |
| Route | Description |
|---|---|
/dashboard |
Main feed with recommendations |
/profile/:username |
User profile view/edit |
/recommendations/create |
Create new recommendation |
/recommendations/:id |
View recommendation details |
/search |
Advanced search interface |
/trips |
Trip planning dashboard |
/trips/create |
Create new trip |
/buddies |
Travel buddy connections |
/achievements |
View badges & progress |
/notifications |
Real-time notifications |
| Route | Description |
|---|---|
/moderator/dashboard |
Moderation overview |
/moderator/reports |
Review content reports |
/moderator/users |
User management |
/moderator/actions |
Moderation history |
- Total Lines of Code: 50,000+
- Backend API Endpoints: 80+
- React Components: 120+
- Database Tables: 21
- Test Suites: 230+
- Development Time: 13 weeks
- Git Commits: 500+
- β 100% of proposed features implemented
- β 5+ additional features beyond proposal
- β 85%+ test coverage across codebase
- β WCAG AA compliant accessibility
- β Zero critical security vulnerabilities
This project is licensed under the MIT License - see the LICENSE file for details.
- **Professor Karen ** - Project guidance and mentorship