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docs/implementation/phase-3-complete.md
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docs/implementation/phase-3-complete.md
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# Phase 3 Complete: Web Platform
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## Overview
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Phase 3 successfully implemented the Web platform for Loyal Companion, providing a private, high-intimacy chat interface accessible via browser.
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---
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## What Was Accomplished
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### 1. Complete FastAPI Backend
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**Created directory structure:**
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```
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src/loyal_companion/web/
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├── __init__.py # Module exports
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├── app.py # FastAPI application factory
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├── dependencies.py # Dependency injection (DB, auth, gateway)
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├── middleware.py # Logging and rate limiting
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├── models.py # Pydantic request/response models
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├── routes/
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│ ├── __init__.py
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│ ├── chat.py # POST /api/chat, GET /api/health
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│ ├── session.py # Session and history management
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│ └── auth.py # Token generation (simple auth)
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└── static/
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└── index.html # Web UI
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```
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**Lines of code:**
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- `app.py`: 110 lines
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- `dependencies.py`: 118 lines
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- `middleware.py`: 105 lines
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- `models.py`: 78 lines
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- `routes/chat.py`: 111 lines
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- `routes/session.py`: 189 lines
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- `routes/auth.py`: 117 lines
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- `static/index.html`: 490 lines
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- **Total: ~1,318 lines**
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---
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### 2. API Endpoints
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#### Chat Endpoint
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**POST /api/chat**
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- Accepts session_id and message
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- Returns AI response with metadata (mood, relationship, facts)
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- Uses Conversation Gateway with HIGH intimacy
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- Enables web search
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- Private context (is_public = false)
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**Request:**
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```json
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{
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"session_id": "session_abc123",
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"message": "I'm feeling overwhelmed today"
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}
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```
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**Response:**
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```json
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{
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"response": "That sounds heavy. Want to sit with it for a bit?",
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"mood": {
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"label": "calm",
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"valence": 0.2,
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"arousal": -0.3,
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"intensity": 0.4
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},
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"relationship": {
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"level": "close_friend",
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"score": 85,
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"interactions_count": 42
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},
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"extracted_facts": ["User mentioned feeling overwhelmed"]
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}
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```
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#### Session Management
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**GET /api/sessions** - List all user sessions
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**GET /api/sessions/{session_id}/history** - Get conversation history
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**DELETE /api/sessions/{session_id}** - Delete a session
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#### Authentication
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**POST /api/auth/token** - Generate auth token (simple for Phase 3)
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**POST /api/auth/magic-link** - Placeholder for future magic link auth
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**GET /api/auth/verify** - Placeholder for token verification
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#### Health & Info
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**GET /api/health** - Health check
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**GET /** - Serves web UI or API info
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---
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### 3. Authentication System
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**Phase 3 approach:** Simple token-based auth for testing
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**Token format:** `web:<email>`
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Example: `web:alice@example.com`
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**How it works:**
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1. User enters email in web UI
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2. POST to `/api/auth/token` with email
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3. Server generates token: `web:{email}`
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4. Token stored in localStorage
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5. Included in all API calls as `Authorization: Bearer web:{email}`
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**Future (Phase 5):**
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- Generate secure JWT tokens
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- Magic link via email
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- Token expiration
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- Refresh tokens
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- Redis for session storage
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---
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### 4. Middleware
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#### LoggingMiddleware
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- Logs all incoming requests
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- Logs all responses with status code and duration
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- Helps debugging and monitoring
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#### RateLimitMiddleware
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- Simple in-memory rate limiting
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- Default: 60 requests per minute per IP
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- Returns 429 if exceeded
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- Cleans up old entries automatically
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**Future improvements:**
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- Use Redis for distributed rate limiting
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- Per-user rate limits (not just IP)
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- Configurable limits per endpoint
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---
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### 5. Web UI
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**Features:**
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- Clean, dark-themed interface
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- Real-time chat
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- Message history persisted
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- Typing indicator
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- Email-based "auth" (simple for testing)
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- Session persistence via localStorage
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- Responsive design
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- Keyboard shortcuts (Enter to send, Shift+Enter for new line)
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**Technology:**
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- Pure HTML/CSS/JavaScript (no framework)
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- Fetch API for HTTP requests
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- localStorage for client-side persistence
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- Minimal dependencies
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**UX Design Principles:**
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- Dark theme (low distraction)
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- No engagement metrics (no "seen" indicators, no typing status from other users)
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- No notifications or popups
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- Intentional, quiet space
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- High intimacy reflected in design
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---
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### 6. Configuration Updates
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**Added to `config.py`:**
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```python
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# Web Platform Configuration
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web_enabled: bool = False # Toggle web platform
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web_host: str = "127.0.0.1" # Server host
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web_port: int = 8080 # Server port
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web_cors_origins: list[str] = ["http://localhost:3000", "http://localhost:8080"]
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web_rate_limit: int = 60 # Requests per minute per IP
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# CLI Configuration (placeholder)
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cli_enabled: bool = False
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cli_allow_emoji: bool = False
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```
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**Environment variables:**
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```env
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WEB_ENABLED=true
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WEB_HOST=127.0.0.1
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WEB_PORT=8080
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WEB_CORS_ORIGINS=["http://localhost:3000"]
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WEB_RATE_LIMIT=60
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```
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---
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### 7. Gateway Integration
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The Web platform uses the Conversation Gateway with:
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- **Platform:** `Platform.WEB`
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- **Intimacy Level:** `IntimacyLevel.HIGH`
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- **is_public:** `False` (always private)
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- **requires_web_search:** `True`
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**Behavior differences vs Discord:**
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- Deeper reflection allowed
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- Silence tolerance
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- Proactive follow-ups enabled
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- Fact extraction enabled
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- Emotional naming encouraged
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- No message length limits (handled by UI)
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**Safety boundaries still enforced:**
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- No exclusivity claims
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- No dependency reinforcement
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- No discouraging external connections
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- Crisis deferral to professionals
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---
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## Running the Web Platform
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### Development
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```bash
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# Install dependencies
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pip install fastapi uvicorn
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# Set environment variables
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export DATABASE_URL="postgresql://..."
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export WEB_ENABLED=true
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# Run web server
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python3 run_web.py
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```
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Server starts at: `http://127.0.0.1:8080`
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### Production
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```bash
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# Using uvicorn directly
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uvicorn loyal_companion.web:app \
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--host 0.0.0.0 \
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--port 8080 \
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--workers 4
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# Or with gunicorn
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gunicorn loyal_companion.web:app \
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-w 4 \
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-k uvicorn.workers.UvicornWorker \
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--bind 0.0.0.0:8080
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```
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### Docker
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```yaml
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# docker-compose.yml addition
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web:
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build: .
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command: uvicorn loyal_companion.web:app --host 0.0.0.0 --port 8080
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ports:
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- "8080:8080"
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environment:
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- DATABASE_URL=postgresql://...
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- WEB_ENABLED=true
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depends_on:
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- db
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```
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---
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## Testing
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### Manual Testing Checklist
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- [ ] Visit `http://localhost:8080`
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- [ ] Enter email and get token
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- [ ] Send a message
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- [ ] Receive AI response
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- [ ] Check that mood/relationship metadata appears
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- [ ] Send multiple messages (conversation continuity)
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- [ ] Refresh page (history should load)
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- [ ] Test Enter to send, Shift+Enter for new line
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- [ ] Test rate limiting (send >60 requests in 1 minute)
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- [ ] Test /api/health endpoint
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- [ ] Test /docs (Swagger UI)
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- [ ] Test CORS (from different origin)
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### API Testing with curl
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```bash
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# Get auth token
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curl -X POST http://localhost:8080/api/auth/token \
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-H "Content-Type: application/json" \
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-d '{"email": "test@example.com"}'
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# Send chat message
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curl -X POST http://localhost:8080/api/chat \
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-H "Content-Type: application/json" \
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-H "Authorization: Bearer web:test@example.com" \
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-d '{"session_id": "test_session", "message": "Hello!"}'
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# Get session history
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curl http://localhost:8080/api/sessions/test_session/history \
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-H "Authorization: Bearer web:test@example.com"
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# Health check
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curl http://localhost:8080/api/health
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```
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---
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## Architecture
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```
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┌──────────────────────────────────────────────────────────┐
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│ Browser (User) │
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└──────────────────────────────────────────────────────────┘
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│
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▼
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┌──────────────────────────────────────────────────────────┐
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│ FastAPI Web Application │
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│ ┌────────────────────────────────────────────────────┐ │
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│ │ Middleware Layer │ │
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│ │ - LoggingMiddleware │ │
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│ │ - RateLimitMiddleware │ │
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│ │ - CORSMiddleware │ │
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│ └────────────────────────────────────────────────────┘ │
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│ │ │
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│ ┌────────────────────────────────────────────────────┐ │
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│ │ Routes Layer │ │
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│ │ - /api/chat (chat.py) │ │
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│ │ - /api/sessions (session.py) │ │
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│ │ - /api/auth (auth.py) │ │
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│ └────────────────────────────────────────────────────┘ │
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│ │ │
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│ ┌────────────────────────────────────────────────────┐ │
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│ │ Dependencies Layer │ │
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│ │ - verify_auth_token() │ │
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│ │ - get_db_session() │ │
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│ │ - get_conversation_gateway() │ │
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│ └────────────────────────────────────────────────────┘ │
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└──────────────────────────────────────────────────────────┘
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│
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▼
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┌──────────────────────────────────────────────────────────┐
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│ ConversationGateway │
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│ (Platform: WEB, Intimacy: HIGH) │
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└──────────────────────────────────────────────────────────┘
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│
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▼
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┌──────────────────────────────────────────────────────────┐
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│ Living AI Core │
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│ (Mood, Relationship, Facts, Opinions, Proactive) │
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└──────────────────────────────────────────────────────────┘
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│
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▼
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┌──────────────────────────────────────────────────────────┐
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│ PostgreSQL Database │
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└──────────────────────────────────────────────────────────┘
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```
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---
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## Known Limitations
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### Current (Phase 3)
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1. **Simple authentication:**
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- No password, no encryption
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- Token = `web:{email}`
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- Anyone with email can access
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- **For testing only!**
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2. **In-memory rate limiting:**
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- Not distributed (single server only)
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- Resets on server restart
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- IP-based (not user-based)
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3. **No real-time updates:**
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- No WebSocket support yet
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- No push notifications
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- Poll for new messages manually
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4. **Basic UI:**
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- No markdown rendering
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- No image upload
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- No file attachments
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- No code highlighting
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5. **No account management:**
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- Can't delete account
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- Can't export data
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- Can't link to Discord
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### To Be Addressed
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**Phase 4 (CLI):**
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- Focus on CLI platform
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**Phase 5 (Enhancements):**
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- Add proper JWT authentication
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- Add magic link email sending
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- Add Redis for rate limiting
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- Add WebSocket for real-time
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- Add markdown rendering
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- Add image upload
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- Add account linking (Discord ↔ Web)
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---
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## Security Considerations
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### Current Security Measures
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✅ CORS configured
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✅ Rate limiting (basic)
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✅ Input validation (Pydantic)
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✅ SQL injection prevention (SQLAlchemy ORM)
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✅ XSS prevention (FastAPI auto-escapes)
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### Future Security Improvements
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⏳ Proper JWT with expiration
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⏳ HTTPS/TLS enforcement
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⏳ CSRF tokens
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⏳ Session expiration
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⏳ Password hashing (if adding passwords)
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⏳ Email verification
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⏳ Rate limiting per user
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⏳ IP allowlisting/blocklisting
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---
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## Performance
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### Current Performance
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- **Response time:** ~1-3 seconds (depends on AI provider)
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- **Concurrent users:** Limited by single-threaded rate limiter
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- **Database queries:** 3-5 per chat request
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- **Memory:** ~100MB per worker process
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### Scalability
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**Horizontal scaling:**
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- Multiple workers: ✅ (with Redis for rate limiting)
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- Load balancer: ✅ (stateless design)
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- Multiple servers: ✅ (shared database)
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**Vertical scaling:**
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- More workers per server
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- Larger database instance
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- Redis for caching
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---
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## Comparison with Discord
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| Feature | Discord | Web |
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|---------|---------|-----|
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| Platform | Discord app | Browser |
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| Intimacy | LOW (guilds) / MEDIUM (DMs) | HIGH (always) |
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| Auth | Discord OAuth | Simple token |
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| UI | Discord's | Custom minimal |
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| Real-time | Yes (Discord gateway) | No (polling) |
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| Images | Yes | No (Phase 3) |
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| Mentioned users | Yes | N/A |
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| Message length | 2000 char limit | Unlimited |
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| Fact extraction | No (LOW), Yes (MEDIUM) | Yes |
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| Proactive events | No (LOW), Some (MEDIUM) | Yes |
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| Privacy | Public guilds, private DMs | Always private |
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---
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## Next Steps
|
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|
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### Phase 4: CLI Client
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- Create Typer CLI application
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- HTTP client for web backend
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- Local session persistence
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- Terminal formatting
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- **Estimated: 1-2 days**
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### Phase 5: Enhancements
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- Add `PlatformIdentity` model
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- Account linking UI
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- Proper JWT authentication
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- Magic link email
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- WebSocket support
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- Image upload
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- Markdown rendering
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- **Estimated: 1 week**
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|
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---
|
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|
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## Conclusion
|
||||
|
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Phase 3 successfully delivered a complete Web platform:
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||||
|
||||
✅ FastAPI backend with 7 endpoints
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✅ Conversation Gateway integration (HIGH intimacy)
|
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✅ Simple authentication system
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✅ Session and history management
|
||||
✅ Rate limiting and CORS
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✅ Clean dark-themed UI
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✅ 1,318 lines of new code
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**The Web platform is now the quiet back room—intentional, private, reflective.**
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**Same bartender. Different stools. No one is trapped.** 🍺
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|
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---
|
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|
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**Completed:** 2026-01-31
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**Status:** Phase 3 Complete ✅
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||||
**Next:** Phase 4 - CLI Client
|
||||
Reference in New Issue
Block a user