DiaMate Pro - AI-Powered Diabetes Management

Production-ready diabetes management platform with AI assistant, photo analysis, health integrations, and subscription system.

Architecture

DiaMate-INVESTOR/
├── index.html                    # Web app entry (ES modules)
├── DiaMate-Standalone.html       # Single-file version (no server)
├── js/                           # Frontend modules
│   ├── app.js                    # Main app
│   ├── store.js                  # State management
│   ├── router.js                 # SPA routing
│   ├── safety.js                 # Client-side safety
│   ├── utils.js                  # Utilities
│   ├── api-client.js             # Backend API client
│   └── views/                    # View components
├── backend/
│   ├── package.json              # Dependencies
│   ├── netlify.toml              # Netlify config
│   ├── .env.example              # Environment template
│   ├── supabase/
│   │   ├── schema.sql            # Core database schema
│   │   └── schema-health.sql     # Health integrations schema
│   └── netlify/functions/
│       ├── lib/                  # Shared utilities
│       │   ├── supabase.js       # DB client
│       │   ├── auth.js           # JWT verification
│       │   ├── quotas.js         # Rate limiting
│       │   ├── ai-safety.js      # Safety filters
│       │   └── cgm-connectors.js # CGM connector implementations
│       ├── entitlement.js        # Subscription status
│       ├── ai-chat.js            # AI chat (with health context)
│       ├── ai-vision.js          # Photo analysis
│       ├── ai-insight.js         # Event-driven insights
│       ├── ai-memory-update.js   # Profile/memory management
│       ├── iap-apple-verify.js   # iOS purchase verification
│       ├── iap-google-verify.js  # Android purchase verification
│       ├── weekly-summary-cron.js # Weekly summary scheduler
│       ├── cgm-connect.js        # CGM OAuth & sync
│       ├── health-sync.js        # HealthKit/Health Connect sync
│       └── health-summary.js     # Health data summary for AI
└── mobile/
    └── src/
        ├── services/health/      # Health platform integrations
        │   ├── types.ts          # Type definitions
        │   ├── HealthKitService.ts    # iOS HealthKit
        │   ├── HealthConnectService.ts # Android Health Connect
        │   └── HealthManager.ts  # Unified health manager
        └── screens/
            └── HealthConnectionsScreen.tsx # Health settings UI

Features

FREE Tier

• 5 AI chat messages/day
• Glucose logging
• Dose calculator
• Basic reports

PRO Tier ($4.99/month)

• 500 AI chat messages/month
• 200 photo analyses/month
• 150 event-driven insights/month
• 4 weekly summaries/month
• AI personalization with health data
• CGM integration (Dexcom)
• Advanced reports

Health Integrations

iOS - HealthKit

• Read blood glucose, nutrition, sleep, activity
• Write DiaMate logs to Apple Health
• Background sync support

Android - Health Connect

• Read blood glucose, nutrition, sleep, activity
• Write DiaMate logs to Health Connect
• Explicit permission management

CGM Connectors

• Dexcom (OAuth 2.0): Real-time glucose data
• More coming: Libre, Medtronic

Data Normalization

All glucose data normalized to:

{
  "source": "dexcom|apple_health|health_connect|manual",
  "timestamp": "ISO 8601",
  "mgdl": 120,
  "trend": "stable|rising|falling",
  "device": "Dexcom G6",
  "context": "fasting|before_meal|after_meal"
}

Privacy Controls

• Toggle: "Read from Health Platform"
• Toggle: "Write DiaMate logs"
• Toggle: "Send health data to AI"
• Delete imported data anytime
• Disconnect CGM anytime

Setup

1. Supabase

1. Create project at supabase.com
2. Run backend/supabase/schema.sql in SQL Editor
3. Copy URL and keys to environment

2. Backend

cd backend
npm install
cp .env.example .env
# Fill in your keys
netlify dev

3. Environment Variables

Set in Netlify dashboard or .env:

• OPENAI_API_KEY - OpenAI API key
• SUPABASE_URL - Supabase project URL
• SUPABASE_SERVICE_ROLE_KEY - Service role key
• SUPABASE_JWT_SECRET - JWT secret
• APPLE_* - iOS IAP credentials
• GOOGLE_* - Android IAP credentials

API Endpoints

Endpoint	Method	Auth	Description
/api/entitlement	GET	Yes	Get subscription status
/api/ai-chat	POST	Yes	AI chat (with health context)
/api/ai-vision	POST	Yes	Photo analysis (PRO)
/api/ai-insight	POST	Yes	Event insights (PRO)
/api/ai-memory-update	POST	Yes	Update profile/memory
/api/iap-apple-verify	POST	Yes	Verify iOS purchase
/api/iap-google-verify	POST	Yes	Verify Android purchase
/api/weekly-summary-cron	POST	Cron	Generate weekly summaries
/api/cgm-connect	GET/POST	Yes	CGM OAuth & sync
/api/health-sync	POST	Yes	HealthKit/Health Connect sync
/api/health-summary	GET	Yes	Health data summary

Safety

• AI never provides specific insulin doses
• Dose requests redirect to calculator
• All responses filtered for safety
• Rate limiting: 10 req/min per user

Privacy (KVKK/GDPR)

• AI personalization toggle
• Memory clear option
• Full data deletion
• No raw health data in logs

Mobile App (React Native Expo)

Coming soon - will include:

• Supabase Auth integration
• StoreKit 2 (iOS) / Play Billing (Android)
• Paywall UI
• Push notifications