bakery-ia/docs/GETTING_STARTED.md

Getting Started - Completing the Deletion System

Welcome! This guide will help you complete the remaining work in the most efficient way.

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🎯 Quick Status

Current State: 75% Complete (7/12 services implemented) Time to Complete: 4 hours You Are Here: Ready to implement the last 5 services

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📋 What You Need to Do

Option 1: Quick Implementation (Recommended) - 1.5 hours

Use the code generator to create the 3 pending services:

cd /Users/urtzialfaro/Documents/bakery-ia

# 1. Generate POS service (5 minutes)
python3 scripts/generate_deletion_service.py pos "POSConfiguration,POSTransaction,POSSession"
# Follow prompts to write files

# 2. Generate External service (5 minutes)
python3 scripts/generate_deletion_service.py external "ExternalDataCache,APIKeyUsage"

# 3. Generate Alert Processor service (5 minutes)
python3 scripts/generate_deletion_service.py alert_processor "Alert,AlertRule,AlertHistory"

That's it! Each service takes 5-10 minutes total.

Option 2: Manual Implementation - 1.5 hours

Follow the templates in QUICK_START_REMAINING_SERVICES.md:

1. POS Service (30 min) - Page 9 of QUICK_START
2. External Service (30 min) - Page 10
3. Alert Processor (30 min) - Page 11

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🧪 Testing Your Implementation

After creating each service:

# 1. Start the service
docker-compose up pos-service

# 2. Run the test script
./scripts/test_deletion_endpoints.sh test-tenant-123

# 3. Verify it shows ✓ PASSED for your service

Expected output:

8. POS Service:
Testing pos (GET pos/tenant/test-tenant-123/deletion-preview)... ✓ PASSED (200)
    → Preview: 15 items would be deleted
Testing pos (DELETE pos/tenant/test-tenant-123)... ✓ PASSED (200)
    → Deleted: 15 items

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📚 Key Documents Reference

Document	When to Use It
COMPLETION_CHECKLIST.md ⭐	Your main checklist - mark items as done
QUICK_START_REMAINING_SERVICES.md	Step-by-step templates for each service
TENANT_DELETION_IMPLEMENTATION_GUIDE.md	Deep dive into patterns and architecture
DELETION_ARCHITECTURE_DIAGRAM.md	Visual understanding of the system
FINAL_IMPLEMENTATION_SUMMARY.md	Executive overview and metrics

Start with: COMPLETION_CHECKLIST.md (you have it open!)

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🚀 Quick Win Path (90 minutes)

Step 1: Generate All 3 Services (15 minutes)

# Run all three generators
python3 scripts/generate_deletion_service.py pos "POSConfiguration,POSTransaction,POSSession"
python3 scripts/generate_deletion_service.py external "ExternalDataCache,APIKeyUsage"
python3 scripts/generate_deletion_service.py alert_processor "Alert,AlertRule,AlertHistory"

Step 2: Add API Endpoints (30 minutes)

For each service, the generator output shows you exactly what to copy into the API file.

Example for POS:

# Copy the "API ENDPOINTS TO ADD" section from generator output
# Paste at the end of: services/pos/app/api/pos.py

Step 3: Test Everything (15 minutes)

# Test all at once
./scripts/test_deletion_endpoints.sh

Step 4: Refactor Existing Services (30 minutes)

These services already have partial deletion logic. Just standardize them:

# Look at existing implementation
cat services/forecasting/app/services/forecasting_service.py | grep -A 50 "delete"

# Copy the pattern from Orders/Recipes services
# Move logic into new tenant_deletion_service.py

Done! All 12 services will be implemented.

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🎓 Understanding the Architecture

The Pattern (Same for Every Service)

1. Create: services/{service}/app/services/tenant_deletion_service.py
   ├─ Extends BaseTenantDataDeletionService
   ├─ Implements get_tenant_data_preview()
   └─ Implements delete_tenant_data()

2. Add to: services/{service}/app/api/{router}.py
   ├─ DELETE /tenant/{tenant_id} - actual deletion
   └─ GET /tenant/{tenant_id}/deletion-preview - dry run

3. Test:
   ├─ curl -X GET .../deletion-preview (should return counts)
   └─ curl -X DELETE .../tenant/{id} (should delete and return summary)

Example Service (Orders - Complete Implementation)

Look at these files as reference:

• services/orders/app/services/tenant_deletion_service.py (132 lines)
• services/orders/app/api/orders.py (lines 312-404)

Just copy the pattern!

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🔍 Troubleshooting

"Import Error: No module named shared.services"

Fix: Add to PYTHONPATH:

export PYTHONPATH=/Users/urtzialfaro/Documents/bakery-ia/services/shared:$PYTHONPATH

Or in your service's __init__.py:

import sys
sys.path.insert(0, "/Users/urtzialfaro/Documents/bakery-ia/services/shared")

"Table doesn't exist" error

This is OK! The code is defensive:

try:
    count = await self.db.scalar(...)
except Exception:
    preview["items"] = 0  # Table doesn't exist, just skip

"How do I know the deletion order?"

Rule: Delete children before parents.

Example:

# WRONG ❌
delete(Order)  # Has order_items
delete(OrderItem)  # Foreign key violation!

# RIGHT ✅
delete(OrderItem)  # Delete children first
delete(Order)  # Then parent

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✅ Completion Milestones

Mark these as you complete them:

• Milestone 1: All 3 new services generated (15 min)

  • POS
  • External
  • Alert Processor

• Milestone 2: API endpoints added (30 min)

  • POS endpoints in router
  • External endpoints in router
  • Alert Processor endpoints in router

• Milestone 3: All services tested (15 min)

  • Test script runs successfully
  • All show ✓ PASSED or NOT IMPLEMENTED
  • No errors in logs

• Milestone 4: Existing services refactored (30 min)

  • Forecasting uses new pattern
  • Training uses new pattern
  • Notification uses new pattern

When all milestones complete: 🎉 You're at 100%!

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🎯 Success Criteria

You'll know you're done when:

1. ✅ Test script shows all services implemented
2. ✅ All endpoints return 200 (not 404)
3. ✅ Preview endpoints show correct counts
4. ✅ Delete endpoints return deletion summaries
5. ✅ No errors in service logs

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💡 Pro Tips

Tip 1: Use the Generator

The generate_deletion_service.py script does 90% of the work for you.

Tip 2: Copy from Working Services

When in doubt, copy from Orders or Recipes services - they're complete.

Tip 3: Test Incrementally

Don't wait until all services are done. Test each one as you complete it.

Tip 4: Check the Logs

If something fails, check the service logs:

docker-compose logs -f pos-service

Tip 5: Use the Checklist

COMPLETION_CHECKLIST.md has everything broken down. Just follow it.

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🎬 Ready? Start Here:

Immediate Action:

# 1. Open terminal
cd /Users/urtzialfaro/Documents/bakery-ia

# 2. Generate first service
python3 scripts/generate_deletion_service.py pos "POSConfiguration,POSTransaction,POSSession"

# 3. Follow the prompts

# 4. Test it
./scripts/test_deletion_endpoints.sh

# 5. Repeat for other services

You got this! 🚀

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📞 Need Help?

If You Get Stuck:

1. Check the working examples:

   • Services: Orders, Inventory, Recipes, Sales, Production, Suppliers
   • Look at their tenant_deletion_service.py files

2. Review the patterns:

   • QUICK_START_REMAINING_SERVICES.md has detailed patterns

3. Common issues:

   • Import errors → Check PYTHONPATH
   • Model not found → Check model import in service file
   • Endpoint not found → Check router registration

Reference Files (In Order of Usefulness):

1. COMPLETION_CHECKLIST.md ⭐⭐⭐ - Your primary guide
2. QUICK_START_REMAINING_SERVICES.md ⭐⭐⭐ - Templates and examples
3. services/orders/app/services/tenant_deletion_service.py ⭐⭐ - Working example
4. TENANT_DELETION_IMPLEMENTATION_GUIDE.md ⭐ - Deep dive

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🏁 Final Checklist

Before you start, verify you have:

• All documentation files in project root
• Generator script in scripts/
• Test script in scripts/
• 7 working service implementations as reference
• Clear understanding of the pattern

Everything is ready. Let's complete this! 💪

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Time Investment: 90 minutes Reward: Complete, production-ready deletion system Difficulty: Easy (just follow the pattern)

Let's do this! 🎯