vibn-frontend/DATABASE-INTEGRATION.md

Database Integration Complete ✅

The VIBN frontend is now connected to your PostgreSQL database and displaying real data!

🔗 What's Connected

Database Connection

• Location: lib/db.ts
• Connection: Railway PostgreSQL (same as your Extension proxy)
• SSL: Enabled with rejectUnauthorized: false

Type Definitions

• Location: lib/types.ts
• Types: Session, WorkCompleted, Project, ArchitecturalDecision, ApiEndpoint, DashboardStats

API Routes Created

1. /api/stats - Dashboard Statistics

Fetches aggregated metrics:

• Total sessions count
• Total AI cost
• Total tokens used
• Total duration
• Work items completed

Usage: GET /api/stats?projectId=1

2. /api/sessions - Sessions List

Fetches session data with:

• Conversation history (messages)
• File changes
• Token counts
• Cost estimates
• AI model used
• IDE information
• Git branch/commit info

Usage: GET /api/sessions?projectId=1&limit=20

3. /api/work-completed - Work Items

Fetches completed work items:

• Title and description
• Category (frontend/backend/database/etc.)
• Files modified
• Session linkage
• GitHub commit info

Usage: GET /api/work-completed?projectId=1&limit=20

📊 Pages Updated with Real Data

✅ Overview Page (/[projectId]/overview)

• Real Stats: Sessions, Cost, Tokens, Work Items
• Calculation: Duration shown in hours
• Formatting: Cost shows 2 decimals, tokens show M notation

✅ Sessions Page (/[projectId]/sessions)

• Real Sessions: Pulled from sessions table
• Details Shown:
  • Duration in minutes
  • Message count
  • Cost per session
  • AI model (Claude/GPT/Gemini)
  • IDE (Cursor/VS Code)
  • Git branch
• Empty State: Shows when no sessions exist

🗄️ Database Tables Used

-- Sessions table
SELECT * FROM sessions WHERE project_id = 1;

-- Work completed table
SELECT * FROM work_completed WHERE project_id = 1;

-- Projects table (for metadata)
SELECT * FROM projects;

🔄 Data Flow

PostgreSQL (Railway)
    ↓
Next.js API Routes (/api/*)
    ↓
Server Components (pages)
    ↓
UI Components (cards, badges, etc.)

📝 Environment Variables

The database URL is hardcoded in lib/db.ts (same as Extension proxy):

const DATABASE_URL = 'postgresql://postgres:jhsRNOIyjjVfrdvDXnUVcXXXsuzjvcFc@metro.proxy.rlwy.net:30866/railway';

For production, move to environment variable:

DATABASE_URL=postgresql://...

🎯 What's Now Live

1. Overview Dashboard

   • Real session count
   • Real total cost
   • Real token usage
   • Real work items completed

2. Sessions List

   • Shows actual AI coding sessions
   • Displays conversation history metadata
   • Shows cost per session
   • Links to file changes

3. Empty States

   • Graceful handling when no data exists
   • Helpful CTAs to get started

🔜 Next Steps

Data Not Yet Connected:

• Features page (need to populate features table)
• API Map page (need to populate api_endpoints table)
• Architecture page (need to populate architectural_decisions table)
• Analytics charts (need chart library like Recharts)

To Connect These:

1. Run Gemini analyzer on existing sessions → populates tables
2. Create API routes for features/api-endpoints/decisions
3. Update pages to fetch from new routes

🧪 Testing

Visit these URLs to see real data:

# Frontend
http://localhost:3000/ai-proxy/overview
http://localhost:3000/ai-proxy/sessions

# API endpoints
http://localhost:3000/api/stats?projectId=1
http://localhost:3000/api/sessions?projectId=1
http://localhost:3000/api/work-completed?projectId=1

🚀 Status

Database Integration: ✅ COMPLETE

• PostgreSQL connection established
• Type definitions created
• API routes built
• Overview page showing real data
• Sessions page showing real data
• Graceful error handling
• Empty states implemented

Live at: http://localhost:3000/ai-proxy/overview