mtgonline/backend/PORTED_STATE.md

MTG Online Backend - Ported State and Next Steps

Project Overview

The mtgonline project is a Magic: The Gathering online application with a Docker-based stack:

• Two PostgreSQL containers (card data + user data)
• Backend application on port 5555
• MTGJSON data loading pipeline

Recent Work Summary

What Was Done

1. Created comprehensive interaction router (backend/app/routers/interactions.py)

   • Synergies search with filters (type, strength, confidence, pagination)
   • Counters search with filters
   • Evolutions search with filters
   • Card recommendations (synergy, counter, evolution types)
   • Card interaction statistics
   • Redis caching for performance

2. Fixed main.py to properly mount all routers

   • Removed duplicate search implementation
   • Added all routers: auth, users, decks, rooms, games, admin, card_router, interactions
   • Added verbose logging configuration
   • Added lifespan events for startup/shutdown

3. Updated __init__.py to export all routers

   • Centralized router imports
   • Proper package structure

4. Updated Dockerfile to include interaction scripts

   • Added scripts directory to container
   • Made scripts executable
   • Proper permissions for appuser

Files Modified/Created

• backend/app/routers/interactions.py - NEW
• backend/app/main.py - REWRITTEN
• backend/app/routers/__init__.py - REWRITTEN
• backend/Dockerfile - REWRITTEN

Key Technical Decisions

• All interactions use async SQLAlchemy with mtg_get_db dependency
• Redis caching with 10-30 minute TTLs
• Proper error handling with HTTPException
• Consistent database connection pattern across all endpoints
• Logging setup with debug/verbose support

Next Steps (Execute in Order)

1. Stop and Destroy All Docker Containers

cd /home/wall-o/projects/mtgonline
docker compose down -v

2. Build the Backend Docker Container

cd /home/wall-o/projects/mtgonline
docker compose build backend

3. Deploy the Stack as a Test Instance

cd /home/wall-o/projects/mtgonline
docker compose up -d

4. Verify Stack Health

# Check all containers are running
docker compose ps

# Check backend health endpoint
curl http://localhost:5555/health

5. Check Logs for Issues

# View backend logs
docker compose logs backend

# View PostgreSQL logs if needed
docker compose logs db_card
docker compose logs db_user

6. Troubleshoot Issues

If errors are found:

• Import errors: Check that all router modules exist and are properly imported
• Database connection errors: Verify .env file has correct database URLs
• Port conflicts: Ensure port 5555 is available
• Permission errors: Check Dockerfile has proper user/permissions setup

Commands to Monitor Progress

# Watch logs in real-time
docker compose logs -f backend

# Check container status
docker compose ps

# Restart specific container
docker compose restart backend

# View specific container logs
docker compose logs --tail=50 backend

Key Configuration

• Backend port: 5555
• Database URLs in .env file
• Two PostgreSQL databases: mtgdata (card data) and users (user data)
• Redis for caching
• All routers mounted in app/main.py

Expected Behavior

Once healthy, the backend should:

• Serve API documentation at /docs
• Respond to health checks at /health
• Have all interaction endpoints available at /interactions/*
• Show proper logging output indicating successful startup

Error Resolution Strategy

1. Simple errors: Fix directly (typos, import paths, missing dependencies)
2. Complex issues: Document the problem, check Docker logs for stack traces, and consult with user
3. Database issues: Verify connection strings, check PostgreSQL logs, ensure databases exist

Important Notes

• All code execution must be as wall-o user (not root)
• Use /home/wall-o/workspace/venv for Python dependencies
• Docker commands should be run from /home/wall-o/projects/mtgonline
• The .env file is separate from application config