AI Fitness Coach

App that lets you put the pieces together for your fitness life.

• Connects to your smartscale/healthkit to get your weight
• Has an integrated calorie tracker
• Implements AI to provide recommendations that take a holistic approach:
  • Your weight
  • Your eating habits
  • Emotional state /external variables
  • Sleeping

How is this different from any other fitness app?

In many ways it isn't. Except for a couple of critical factors: The unit of measure and the focus is the end user. I want you to lose weight, or gain muscle mass, I want you to live better. First and foremost. No monetization, no growth paths, no crazy expensive plans.

Tech stack

• CodeRabbit for PR reviews, unit tests, docstrigs, security checks
• Next.js framework
• Supabase for both DB and auth
• Pinecone for vector storage
• Inngest for long running API calls to LLMs, and background processes.
• Vercel for hosting
• Taskmaster to keep track of the project, use AI break it down into smaller steps.

Substacks (particular dependencies worth noting)

• Tailwind
• Vercel AI SDK
• Shadcn for UI

Development & Debugging

Comprehensive Logging System

This project includes a comprehensive Winston-based logging system for debugging authentication and other issues:

Features:

• Multi-environment support: Works in both browser and server environments
• Privacy-conscious: Automatically masks sensitive data like email addresses and passwords
• Multiple log levels: Error, Warn, Info, Debug with color-coded console output
• File rotation: Automatic log file rotation with size and date-based limits
• Real-time debugging: Comprehensive authentication flow logging

Quick Setup:

1. Copy env.example to .env.local and configure your Supabase credentials
2. Set LOG_LEVEL=debug for detailed debugging
3. Start development: npm run dev
4. Check browser console and terminal for detailed logs
5. Log files available in logs/ directory (development only)

Authentication Debugging: The login system includes detailed logging for:

• Form validation steps
• Supabase API calls and responses
• Authentication state changes
• Error conditions with full context

See docs/DEBUGGING.md for the complete debugging guide.

Changelog

For this project, I'll be tracking changes in this doc.