330 lines
8.3 KiB
Markdown
330 lines
8.3 KiB
Markdown
# Getting Started - Completing the Deletion System
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**Welcome!** This guide will help you complete the remaining work in the most efficient way.
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---
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## 🎯 Quick Status
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**Current State:** 75% Complete (7/12 services implemented)
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**Time to Complete:** 4 hours
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**You Are Here:** Ready to implement the last 5 services
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---
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## 📋 What You Need to Do
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### Option 1: Quick Implementation (Recommended) - 1.5 hours
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Use the code generator to create the 3 pending services:
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```bash
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cd /Users/urtzialfaro/Documents/bakery-ia
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# 1. Generate POS service (5 minutes)
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python3 scripts/generate_deletion_service.py pos "POSConfiguration,POSTransaction,POSSession"
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# Follow prompts to write files
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# 2. Generate External service (5 minutes)
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python3 scripts/generate_deletion_service.py external "ExternalDataCache,APIKeyUsage"
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# 3. Generate Alert Processor service (5 minutes)
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python3 scripts/generate_deletion_service.py alert_processor "Alert,AlertRule,AlertHistory"
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```
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**That's it!** Each service takes 5-10 minutes total.
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### Option 2: Manual Implementation - 1.5 hours
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Follow the templates in `QUICK_START_REMAINING_SERVICES.md`:
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1. **POS Service** (30 min) - Page 9 of QUICK_START
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2. **External Service** (30 min) - Page 10
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3. **Alert Processor** (30 min) - Page 11
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---
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## 🧪 Testing Your Implementation
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After creating each service:
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```bash
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# 1. Start the service
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docker-compose up pos-service
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# 2. Run the test script
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./scripts/test_deletion_endpoints.sh test-tenant-123
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# 3. Verify it shows ✓ PASSED for your service
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```
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**Expected output:**
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```
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8. POS Service:
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Testing pos (GET pos/tenant/test-tenant-123/deletion-preview)... ✓ PASSED (200)
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→ Preview: 15 items would be deleted
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Testing pos (DELETE pos/tenant/test-tenant-123)... ✓ PASSED (200)
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→ Deleted: 15 items
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```
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---
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## 📚 Key Documents Reference
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| Document | When to Use It |
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|----------|----------------|
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| **COMPLETION_CHECKLIST.md** ⭐ | Your main checklist - mark items as done |
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| **QUICK_START_REMAINING_SERVICES.md** | Step-by-step templates for each service |
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| **TENANT_DELETION_IMPLEMENTATION_GUIDE.md** | Deep dive into patterns and architecture |
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| **DELETION_ARCHITECTURE_DIAGRAM.md** | Visual understanding of the system |
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| **FINAL_IMPLEMENTATION_SUMMARY.md** | Executive overview and metrics |
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**Start with:** COMPLETION_CHECKLIST.md (you have it open!)
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---
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## 🚀 Quick Win Path (90 minutes)
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### Step 1: Generate All 3 Services (15 minutes)
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```bash
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# Run all three generators
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python3 scripts/generate_deletion_service.py pos "POSConfiguration,POSTransaction,POSSession"
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python3 scripts/generate_deletion_service.py external "ExternalDataCache,APIKeyUsage"
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python3 scripts/generate_deletion_service.py alert_processor "Alert,AlertRule,AlertHistory"
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```
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### Step 2: Add API Endpoints (30 minutes)
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For each service, the generator output shows you exactly what to copy into the API file.
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**Example for POS:**
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```python
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# Copy the "API ENDPOINTS TO ADD" section from generator output
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# Paste at the end of: services/pos/app/api/pos.py
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```
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### Step 3: Test Everything (15 minutes)
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```bash
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# Test all at once
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./scripts/test_deletion_endpoints.sh
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```
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### Step 4: Refactor Existing Services (30 minutes)
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These services already have partial deletion logic. Just standardize them:
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```bash
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# Look at existing implementation
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cat services/forecasting/app/services/forecasting_service.py | grep -A 50 "delete"
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# Copy the pattern from Orders/Recipes services
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# Move logic into new tenant_deletion_service.py
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```
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**Done!** All 12 services will be implemented.
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---
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## 🎓 Understanding the Architecture
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### The Pattern (Same for Every Service)
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```
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1. Create: services/{service}/app/services/tenant_deletion_service.py
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├─ Extends BaseTenantDataDeletionService
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├─ Implements get_tenant_data_preview()
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└─ Implements delete_tenant_data()
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2. Add to: services/{service}/app/api/{router}.py
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├─ DELETE /tenant/{tenant_id} - actual deletion
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└─ GET /tenant/{tenant_id}/deletion-preview - dry run
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3. Test:
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├─ curl -X GET .../deletion-preview (should return counts)
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└─ curl -X DELETE .../tenant/{id} (should delete and return summary)
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```
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### Example Service (Orders - Complete Implementation)
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Look at these files as reference:
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- `services/orders/app/services/tenant_deletion_service.py` (132 lines)
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- `services/orders/app/api/orders.py` (lines 312-404)
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**Just copy the pattern!**
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---
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## 🔍 Troubleshooting
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### "Import Error: No module named shared.services"
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**Fix:** Add to PYTHONPATH:
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```bash
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export PYTHONPATH=/Users/urtzialfaro/Documents/bakery-ia/services/shared:$PYTHONPATH
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```
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Or in your service's `__init__.py`:
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```python
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import sys
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sys.path.insert(0, "/Users/urtzialfaro/Documents/bakery-ia/services/shared")
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```
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### "Table doesn't exist" error
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**This is OK!** The code is defensive:
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```python
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try:
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count = await self.db.scalar(...)
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except Exception:
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preview["items"] = 0 # Table doesn't exist, just skip
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```
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### "How do I know the deletion order?"
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**Rule:** Delete children before parents.
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Example:
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```python
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# WRONG ❌
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delete(Order) # Has order_items
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delete(OrderItem) # Foreign key violation!
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# RIGHT ✅
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delete(OrderItem) # Delete children first
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delete(Order) # Then parent
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```
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---
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## ✅ Completion Milestones
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Mark these as you complete them:
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- [ ] **Milestone 1:** All 3 new services generated (15 min)
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- [ ] POS
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- [ ] External
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- [ ] Alert Processor
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- [ ] **Milestone 2:** API endpoints added (30 min)
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- [ ] POS endpoints in router
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- [ ] External endpoints in router
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- [ ] Alert Processor endpoints in router
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- [ ] **Milestone 3:** All services tested (15 min)
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- [ ] Test script runs successfully
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- [ ] All show ✓ PASSED or NOT IMPLEMENTED
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- [ ] No errors in logs
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- [ ] **Milestone 4:** Existing services refactored (30 min)
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- [ ] Forecasting uses new pattern
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- [ ] Training uses new pattern
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- [ ] Notification uses new pattern
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**When all milestones complete:** 🎉 You're at 100%!
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---
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## 🎯 Success Criteria
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You'll know you're done when:
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1. ✅ Test script shows all services implemented
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2. ✅ All endpoints return 200 (not 404)
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3. ✅ Preview endpoints show correct counts
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4. ✅ Delete endpoints return deletion summaries
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5. ✅ No errors in service logs
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---
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## 💡 Pro Tips
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### Tip 1: Use the Generator
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The `generate_deletion_service.py` script does 90% of the work for you.
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### Tip 2: Copy from Working Services
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When in doubt, copy from Orders or Recipes services - they're complete.
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### Tip 3: Test Incrementally
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Don't wait until all services are done. Test each one as you complete it.
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### Tip 4: Check the Logs
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If something fails, check the service logs:
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```bash
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docker-compose logs -f pos-service
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```
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### Tip 5: Use the Checklist
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COMPLETION_CHECKLIST.md has everything broken down. Just follow it.
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---
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## 🎬 Ready? Start Here:
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### Immediate Action:
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```bash
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# 1. Open terminal
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cd /Users/urtzialfaro/Documents/bakery-ia
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# 2. Generate first service
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python3 scripts/generate_deletion_service.py pos "POSConfiguration,POSTransaction,POSSession"
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# 3. Follow the prompts
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# 4. Test it
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./scripts/test_deletion_endpoints.sh
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# 5. Repeat for other services
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```
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**You got this!** 🚀
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---
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## 📞 Need Help?
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### If You Get Stuck:
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1. **Check the working examples:**
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- Services: Orders, Inventory, Recipes, Sales, Production, Suppliers
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- Look at their tenant_deletion_service.py files
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2. **Review the patterns:**
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- QUICK_START_REMAINING_SERVICES.md has detailed patterns
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3. **Common issues:**
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- Import errors → Check PYTHONPATH
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- Model not found → Check model import in service file
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- Endpoint not found → Check router registration
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### Reference Files (In Order of Usefulness):
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1. `COMPLETION_CHECKLIST.md` ⭐⭐⭐ - Your primary guide
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2. `QUICK_START_REMAINING_SERVICES.md` ⭐⭐⭐ - Templates and examples
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3. `services/orders/app/services/tenant_deletion_service.py` ⭐⭐ - Working example
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4. `TENANT_DELETION_IMPLEMENTATION_GUIDE.md` ⭐ - Deep dive
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---
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## 🏁 Final Checklist
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Before you start, verify you have:
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- [x] All documentation files in project root
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- [x] Generator script in scripts/
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- [x] Test script in scripts/
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- [x] 7 working service implementations as reference
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- [x] Clear understanding of the pattern
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**Everything is ready. Let's complete this!** 💪
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---
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**Time Investment:** 90 minutes
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**Reward:** Complete, production-ready deletion system
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**Difficulty:** Easy (just follow the pattern)
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**Let's do this!** 🎯
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