DailyOS

Your personal operating system — tasks, gym tracking, and nutrition in one clean app.

Tech Stack

• Next.js 14 (App Router) + TypeScript
• Tailwind CSS — clean & minimal design
• Firebase Firestore — real-time data storage
• NextAuth.js — Google OAuth authentication
• OpenAI GPT-4o — workout summaries & meal photo scanning

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Quick Start

1. Install dependencies

cd dailyos-app
npm install

2. Configure environment variables

cp .env.local.example .env.local

Then fill in your values in .env.local:

Variable	Where to get it
GOOGLE_CLIENT_ID / GOOGLE_CLIENT_SECRET	Google Cloud Console → APIs & Services → Credentials → OAuth 2.0
NEXTAUTH_SECRET	Run openssl rand -base64 32 in terminal
NEXTAUTH_URL	http://localhost:3000 for dev; your domain for prod
NEXT_PUBLIC_FIREBASE_*	Firebase Console → Project Settings → Your apps → Web
OPENAI_API_KEY	platform.openai.com

3. Set up Firebase

1. Go to Firebase Console and create a project
2. Enable Firestore Database (start in production or test mode)
3. Enable Storage (for meal photos)
4. Add these Firestore collections (they're created automatically on first write):
   • projects, tasks, workouts, bodyweight, meals, macroGoals

4. Set up Google OAuth

1. Go to Google Cloud Console
2. Create OAuth 2.0 credentials (Web application)
3. Add authorized redirect URI: http://localhost:3000/api/auth/callback/google
4. For production, add your domain's callback URL too

5. Run the dev server

npm run dev

Open http://localhost:3000

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Features

✅ Task Management

• Create projects with custom colors
• Add daily and weekly to-dos per project
• Mark tasks complete with a single tap
• Clean project switcher with color coding

💪 Workout Tracking

• Log exercises with sets, reps, and weight (kg / lbs / bodyweight)
• Log body weight daily with history
• Set workout duration
• AI Summary — tap "AI Summary" after logging to get a personalized GPT-powered report covering intensity, strengths, and improvement areas
• Full workout history with expandable sessions

🥗 Diet & Nutrition

• Set daily macro goals (calories, protein, carbs, fat)
• Log meals with full macro breakdown
• Visual macro progress bars per day
• Date navigation to view past days
• 📷 Meal Scanner — take a photo of your meal and GPT-4o estimates the macros automatically (review and edit before logging)

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Adding to iPhone (PWA)

1. Open the app in Safari on your iPhone
2. Tap the Share button → "Add to Home Screen"
3. DailyOS will behave like a native app with full-screen mode

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Deployment (Vercel)

npm run build
vercel --prod

Set all environment variables in Vercel dashboard → Settings → Environment Variables. Make sure to update NEXTAUTH_URL to your production domain.

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Firestore Security Rules (recommended)

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /{collection}/{document=**} {
      allow read, write: if request.auth != null && 
        request.auth.token.email == resource.data.userId;
    }
  }
}