Nexus Personal AI - POC Implementation

A complete POC implementation of the Nexus Personal AI Assistant following the PRD specifications. This is a done-with-you AI assistant that produces brand-consistent social posts and organized Notion artifacts, with decisive consultation and human approvals.

🚀 Features Implemented

✅ Core Features (V1 POC)

• Voice-calibrated content drafting - AI generates posts matching user's voice
• Human-in-the-loop approvals - All content requires manual approval
• Multi-platform support - Twitter/X and LinkedIn ready
• Consultation chat - AI assistant with actionable suggestions
• Analytics dashboard - Performance tracking and insights
• Notion integration - Automated note and task creation (UI ready)
• Modular architecture - Scalable and maintainable codebase

🔧 Technical Stack

Frontend (React Native + Expo)

• React Native with Expo Router v3
• NativeWind for styling (Tailwind CSS)
• TypeScript for type safety
• Context API for state management
• Firebase Authentication

Backend (Python FastAPI)

• FastAPI with async support
• SQLAlchemy ORM with SQLite (production-ready for PostgreSQL)
• OpenAI/Anthropic integration for AI services
• Firebase Admin SDK for authentication
• Modular service architecture

📁 Project Structure

personal-assist/
├── app/                      # React Native app (Expo Router)
│   ├── (tabs)/              # Tab navigation screens
│   ├── auth.tsx             # Authentication screen
│   └── _layout.tsx          # Root layout with providers
├── components/              # Reusable UI components
│   ├── ui/                  # Basic UI primitives
│   └── DraftCard.tsx        # Draft management component
├── contexts/                # React Context providers
│   ├── AuthContext.tsx      # Authentication state
│   └── AppContext.tsx       # App-wide state
├── services/                # API clients and Firebase config
├── types/                   # TypeScript type definitions
├── utils/                   # Helper functions
├── server/                  # Python FastAPI backend
│   ├── app/
│   │   ├── api/v1/         # API route handlers
│   │   ├── core/           # Configuration and dependencies
│   │   ├── models/         # Database models
│   │   ├── schemas/        # Pydantic schemas
│   │   └── services/       # Business logic services
│   └── requirements.txt     # Python dependencies
└── IMPLEMENTATION_PLAN.md   # Development roadmap

🛠️ Setup Instructions

Prerequisites

• Node.js 18+ and npm/yarn
• Python 3.9+
• Expo CLI: npm install -g @expo/cli

Frontend Setup

1. Install dependencies:

   npm install

2. Setup environment variables:

   cp .env.example .env
   # Edit .env with your Firebase and API configurations

3. Start the development server:

   npm start

4. Run on device:

   # iOS
   npm run ios
   
   # Android  
   npm run android
   
   # Web
   npm run web

Backend Setup

1. Navigate to server directory:

   cd server

2. Create virtual environment:

   python -m venv venv
   source venv/bin/activate  # On Windows: venv\Scripts\activate

3. Install dependencies:

   pip install -r requirements.txt

4. Setup environment variables:

   cp .env.example .env
   # Edit .env with your API keys and configurations

5. Start the server:

   python run_server.py

The API will be available at http://localhost:8000

🎯 Key Features Demo

1. Dashboard

• Quick actions for content generation
• Analytics overview with key metrics
• Pending drafts management
• Real-time updates

2. Content Generation

• AI-powered draft creation
• Voice profile matching
• Multiple variants per draft
• Best-time scheduling suggestions

3. Human-in-the-Loop Approval

• Visual draft review interface
• Approve/reject with reasons
• Scheduling options
• Moderation status tracking

4. AI Consultation Chat

• Context-aware conversations
• Actionable suggestions with "Apply" buttons
• Integration with content generation
• Chat history persistence

5. Analytics & Insights

• Performance tracking
• Theme analysis
• Engagement trends
• AI-powered recommendations

🔐 Authentication

The POC includes:

• Firebase Authentication setup (Google, email/password)
• JWT token management
• Protected routes and screens
• User profile management

🤖 AI Integration

Content Generation

• OpenAI GPT-3.5/GPT-4 integration
• Voice profile analysis from writing samples
• Context-aware content creation
• Moderation and safety checks

Chat Assistant

• Conversational AI with memory
• Action-oriented responses
• Integration with content workflows
• User preference learning

🎨 Design System

Built with a comprehensive design system:

• Consistent color palette
• Reusable UI components
• Responsive layouts
• Dark/light mode support
• Accessibility considerations

📊 Data Models

User Profile

• Goals and themes
• Voice profile with tone analysis
• Integration settings
• Preferences and notifications

Content Management

• Draft creation and versioning
• Approval workflows
• Publishing schedules
• Performance tracking

Analytics

• Engagement metrics
• Time savings calculations
• Content performance analysis
• AI recommendations

🚀 Deployment Ready

The POC is structured for easy deployment:

Frontend

• Expo EAS Build ready
• Environment-based configuration
• Production optimizations

Backend

• Docker containerization ready
• Database migration support
• Environment-based settings
• Scalable architecture

🔄 Next Steps (V1.1+)

Based on the implementation plan:

• Calendar integration for proactive prompts
• Advanced content calendar
• Multi-account management
• Enhanced analytics
• Real OAuth integrations
• Production database setup

📞 Support

This POC demonstrates the full technical feasibility of the Nexus Personal AI concept as outlined in the PRD. The modular architecture ensures easy feature additions and maintenance.

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Built with ❤️ following the PRD specifications for maximum commercial viability and user value.