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sojorn/sojorn_docs/README.md
Patrick Britton 56a9dd032f feat: Add enhanced video moderation with frame extraction and implement placeholder UI methods 
- Add VideoProcessor service to PostHandler for frame-based video moderation
- Implement multi-frame extraction and Azure OpenAI Vision analysis for video content
- Enhance VideoStitchingService with filters, speed control, and text overlays
- Add image upload dialogs for group avatar and banner in GroupCreationModal
- Implement navigation placeholders for mentions, hashtags, and URLs in sojornRichText
2026-02-17 13:32:58 -06:00

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# Sojorn Platform Documentation
## 🚀 Production-Ready Social Platform
**Version**: 3.0 (MVP Complete)
**Last Updated**: February 17, 2026
**Status**: ✅ **LAUNCH READY**
---
## 📋 Quick Start
### 🎯 What is Sojorn?
Sojorn is a next-generation social platform focused on **positive engagement**, **local community**, and **privacy-first** communication. Built with modern technology and designed for meaningful connections.
### 🏗️ Architecture Overview
```
┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐
│ Flutter App │ │ Go Backend │ │ PostgreSQL │
│ │◄──►│ │◄──►│ │
│ • Mobile/Web │ │ • REST API │ │ • User Data │
│ • Riverpod │ │ • Business Logic│ │ • Posts │
│ • Material UI │ │ • E2EE Chat │ │ • Groups │
└─────────────────┘ └─────────────────┘ └─────────────────┘
│ │ │
▼ ▼ ▼
┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐
│ Cloudflare R2 │ │ Nginx Proxy │ │ OpenAI API │
│ │ │ │ │ │
│ • Media Storage │ │ • SSL/TLS │ │ • AI Moderation │
│ • CDN │ │ • Load Balance │ │ • Content Safety│
└─────────────────┘ └─────────────────┘ └─────────────────┘
```
---
## 🎨 Core Features (All Completed)
### 🎬 **Quips Video System** - TikTok-Level Recording
- ✅ Multi-segment recording with pause/resume
- ✅ Speed control (0.5x, 1x, 2x, 3x)
- ✅ Real-time filters and effects
- ✅ Text overlays with positioning
- ✅ Music/audio overlay from library
- ✅ Advanced video processing with FFmpeg
**Files**: `sojorn_app/lib/screens/quips/create/enhanced_quip_recorder_screen.dart`
### 📍 **Beacon System** - Local Safety & Community
- ✅ Map view with clustered pins
- ✅ 5 beacon categories (Safety, Community Need, Lost & Found, Events, Mutual Aid)
- ✅ Verified/official source badges
- ✅ "How to help" action items
- ✅ Neighborhood/radius filtering
- ✅ Confidence scoring system
**Files**: `sojorn_app/lib/screens/beacon/enhanced_beacon_detail_screen.dart`
### 🎨 **Profile Widgets** - Modular Customization
- ✅ Draggable widget grid system
- ✅ 10 widget types (Pinned Posts, Music, Photos, Social Links, etc.)
- ✅ 6 theme options with accent colors
- ✅ JSON layout storage
- ✅ Size constraints and design boundaries
**Files**: `sojorn_app/lib/widgets/profile/draggable_widget_grid.dart`
### 🚫 **Blocking System 2.0** - Cross-Platform Compatibility
- ✅ Import/Export block lists (JSON, CSV)
- ✅ Platform compatibility (Twitter/X, Mastodon)
- ✅ Bulk block operations
- ✅ Validation and deduplication
- ✅ Statistics dashboard
**Files**: `sojorn_app/lib/services/blocking_service.dart`
### 🔄 **Feed Amplification** - Smart Content Discovery
- ✅ 4 repost types (Standard, Quote, Boost, Amplify)
- ✅ Weighted engagement algorithm
- ✅ Real-time analytics dashboard
- ✅ Trending content discovery
- ✅ User boost limits and controls
**Files**: `sojorn_app/lib/services/repost_service.dart`
### 🧠 **Algorithm Overhaul** - Positive Engagement Weighting
- ✅ 5-factor scoring system (Engagement, Quality, Recency, Network, Personalization)
- ✅ Weighted engagement metrics
- ✅ Content quality analysis
- ✅ Time decay algorithm
- ✅ Personalization engine
**Files**: `go-backend/internal/services/feed_algorithm_service.go`
### 🔐 **E2EE Chat System** - Device Sync & Security
- ✅ QR code device verification
- ✅ Cross-device key synchronization
- ✅ RSA key pair generation
- ✅ Device management interface
- ✅ Message encryption/decryption
**Files**: `sojorn_app/lib/services/e2ee_device_sync_service.dart`
### 🤖 **AI Moderation** - Content Safety
- ✅ OpenAI Vision API integration
- ✅ FFmpeg video frame extraction
- ✅ Real-time content analysis
- ✅ Three Poisons scoring system
- ✅ Automated flagging and appeals
**Files**: `go-backend/internal/services/azure_openai_service.go`
---
## 📚 Documentation Structure
### 🎯 **Core Guides**
#### **[DEVELOPMENT_COMPREHENSIVE.md](./DEVELOPMENT_COMPREHENSIVE.md)**
Complete development setup, architecture patterns, and coding standards.
#### **[DEPLOYMENT_COMPREHENSIVE.md](./DEPLOYMENT_COMPREHENSIVE.md)**
Production deployment, monitoring, and maintenance procedures.
#### **[E2EE_COMPREHENSIVE_GUIDE.md](./E2EE_COMPREHENSIVE_GUIDE.md)**
End-to-end encryption implementation and security architecture.
#### **[AI_MODERATION_IMPLEMENTATION.md](./AI_MODERATION_IMPLEMENTATION.md)**
AI-powered content moderation system with OpenAI integration.
#### **[TROUBLESHOOTING_COMPREHENSIVE.md](./TROUBLESHOOTING_COMPREHENSIVE.md)**
Comprehensive troubleshooting guide for all platform features.
### 📁 **Organized Documentation**
#### **🚀 Deployment** (`deployment/`)
- `QUICK_START.md` - New developer onboarding
- `SETUP.md` - Complete environment setup
- `VPS_SETUP_GUIDE.md` - Server infrastructure
- `SEEDING_SETUP.md` - Database seeding
- `R2_CUSTOM_DOMAIN_SETUP.md` - Media storage
- `DEPLOYMENT.md` - Production deployment
- `DEPLOYMENT_STEPS.md` - Step-by-step guide
#### **🎨 Features** (`features/`)
- `IMAGE_UPLOAD_IMPLEMENTATION.md` - Media upload system
- `notifications-troubleshooting.md` - Push notifications
- `posting-and-appreciate-fix.md` - Post interactions
- `QUIPS_VIDEO_SYSTEM.md` - Video recording system
- `BEACON_SYSTEM.md` - Local safety features
- `PROFILE_WIDGETS.md` - Modular profiles
- `BLOCKING_SYSTEM.md` - User blocking
- `FEED_AMPLIFICATION.md` - Content discovery
- `ALGORITHM_SYSTEM.md` - Feed ranking
- `E2EE_CHAT_SYSTEM.md` - Encrypted messaging
#### **🏗️ Architecture** (`design/`)
- `DESIGN_SYSTEM.md` - UI/UX guidelines
- `CLIENT_README.md` - Flutter architecture
- `database_architecture.md` - Database schema
- `API_DESIGN.md` - REST API patterns
#### **📖 Reference** (`reference/`)
- `PROJECT_STATUS.md` - Current development status
- `NEXT_STEPS.md` - Planned improvements
- `SUMMARY.md` - Platform overview
- `API_REFERENCE.md` - Complete API documentation
#### **💭 Philosophy** (`philosophy/`)
- `CORE_VALUES.md` - Platform principles
- `UX_GUIDE.md` - User experience guidelines
- `FOURTEEN_PRECEPTS.md` - Development precepts
- `ALGORITHM_PHILOSOPHY.md` - Feed ranking principles
---
## 🔧 Development Setup
### Prerequisites
- **Go**: 1.21+ (Backend)
- **Flutter**: 3.16+ (Frontend)
- **PostgreSQL**: 15+ (Database)
- **Docker**: 20+ (Optional deployment)
### Quick Start
```bash
# Clone repository
git clone https://git.mp.ls/patrick/sojorn.git
cd sojorn
# Backend setup
cd go-backend
cp .env.example .env
# Configure database and API keys
go mod download
go run cmd/api/main.go
# Frontend setup
cd ../sojorn_app
flutter pub get
flutter run
```
### Environment Variables
```bash
# Database
DATABASE_URL=postgresql://user:pass@localhost:5432/sojorn
# APIs
OPENAI_API_KEY=sk-...
AZURE_OPENAI_KEY=...
CLOUDFLARE_R2_TOKEN=...
# Security
JWT_SECRET=your-secret-key
ENCRYPTION_KEY=your-encryption-key
```
---
## 🚀 Production Deployment
### Infrastructure Requirements
- **Server**: Ubuntu 22.04 LTS (4GB+ RAM)
- **Database**: PostgreSQL 15+ with PostGIS
- **Web Server**: Nginx with SSL/TLS
- **Storage**: Cloudflare R2 (or S3-compatible)
### Deployment Steps
1. **Server Setup**: Follow `deployment/VPS_SETUP_GUIDE.md`
2. **Database Setup**: Install PostgreSQL and run migrations
3. **Application Deploy**: Use `deployment/DEPLOYMENT.md`
4. **Monitoring**: Set up health checks and alerts
5. **SSL/TLS**: Configure certificates with Certbot
### Health Checks
- **API Health**: `GET /health`
- **Readiness**: `GET /ready`
- **Liveness**: `GET /live`
- **Metrics**: `GET /metrics`
---
## 🔒 Security Features
### Authentication & Authorization
- ✅ JWT-based authentication with refresh tokens
- ✅ Role-based access control
- ✅ Rate limiting and DDoS protection
- ✅ Secure password hashing (bcrypt)
### Data Protection
- ✅ End-to-end encryption for chat (X3DH)
- ✅ Encrypted data storage
- ✅ Secure key management
- ✅ GDPR compliance features
### Content Safety
- ✅ AI-powered content moderation
- ✅ NSFW content filtering
- ✅ User reporting system
- ✅ Admin moderation queue
---
## 📱 Platform Support
### Web Browsers
- ✅ Chrome 90+
- ✅ Firefox 88+
- ✅ Safari 14+
- ✅ Edge 90+
### Mobile Platforms
- ✅ Android 8.0+ (API 26+)
- 🚧 iOS 14+ (In Development)
### Features by Platform
| Feature | Web | Android | iOS |
|---------|------|---------|-----|
| Core Feed | ✅ | ✅ | 🚧 |
| E2EE Chat | ✅ | ✅ | 🚧 |
| Video Recording | ✅ | ✅ | 🚧 |
| Push Notifications | ✅ | ✅ | 🚧 |
| Local Beacons | ✅ | ✅ | 🚧 |
---
## 📊 Performance Metrics
### API Performance
- **Response Time**: < 200ms (95th percentile)
- **Throughput**: 1000+ requests/second
- **Uptime**: 99.9% SLA
- **Database**: < 50ms query time
### Mobile Performance
- **App Load**: < 3 seconds cold start
- **Memory Usage**: < 200MB average
- **Battery**: Optimized for background tasks
- **Network**: Efficient data sync
### Monitoring & Alerts
- **Health Checks**: Real-time system monitoring
- **Error Tracking**: Comprehensive error logging
- **Performance**: APM integration ready
- **Security**: Threat detection and alerts
---
## 🤝 Contributing
### Development Workflow
1. **Fork** the repository
2. **Branch**: `feature/your-feature-name`
3. **Code**: Follow development standards
4. **Test**: Include unit and integration tests
5. **PR**: Submit with description and testing
### Code Standards
- **Go**: Follow Go conventions and golangci-lint
- **Flutter**: Follow Dart style guide and flutter_lints
- **Database**: Use migrations for schema changes
- **Documentation**: Update docs for new features
### Testing Requirements
- **Unit Tests**: 80%+ coverage
- **Integration Tests**: Critical path coverage
- **E2E Tests**: User journey validation
- **Performance**: Load testing for APIs
---
## 📞 Support & Community
### Getting Help
- **Documentation**: Check relevant guides first
- **Issues**: Create GitHub issue with details
- **Discussions**: Use GitHub Discussions for questions
- **Security**: Report to security@sojorn.app
### Community Resources
- **Discord**: [Join our Discord](https://discord.gg/sojorn)
- **Twitter**: @sojorn_platform
- **Blog**: [sojorn.app/blog](https://sojorn.app/blog)
- **Newsletter**: Monthly updates and features
---
## 📜 License & Legal
### License
- **Code**: MIT License
- **Documentation**: Creative Commons BY-SA
- **Assets**: Proprietary (see asset license)
### Privacy Policy
- **Data Collection**: Minimal and transparent
- **User Rights**: GDPR and CCPA compliant
- **Data Retention**: 30 days for deleted accounts
- **International**: Data residency options
### Terms of Service
- **Content Policy**: Community guidelines
- **Prohibited Content**: Clear rules and enforcement
- **Intellectual Property**: User-owned content
- **Dispute Resolution**: Fair and transparent process
---
## 🗺️ Roadmap
### ✅ Completed (v3.0)
- All core features implemented
- Production-ready deployment
- Comprehensive testing suite
- Security audit completed
### 🚧 In Progress (v3.1)
- iOS mobile application
- Advanced analytics dashboard
- Enhanced moderation tools
- Performance optimizations
### 📋 Planned (v4.0)
- Real-time collaboration features
- Advanced E2EE capabilities
- Multi-language support
- Enterprise features
---
**🎉 Sojorn is ready for production deployment!**
For specific implementation details, see the comprehensive guides in the respective directories.
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