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Recurring Splits Module - Documentation Index

Welcome to the Recurring Splits Module! Here's how to navigate the documentation.

📚 Documentation Files

For First-Time Users

Start here if you're new to the Recurring Splits Module:

  1. SUMMARY.md ⭐ START HERE

    • Visual diagrams and architecture overview
    • Quick 5-minute overview
    • All acceptance criteria checklist
    • Real-world use cases

  2. QUICKSTART.md 🚀 NEXT

    • Installation steps (5 minutes)
    • 5 common use cases with code
    • API reference
    • Troubleshooting guide
    • Best practices

For Developers

Use these for detailed information:

  1. README.md 📖 REFERENCE

    • Complete feature documentation
    • All 12 API endpoints with examples
    • WebSocket event specifications
    • Database schema
    • Integration points
    • Future enhancements

  2. IMPLEMENTATION.md 📋 TECHNICAL

    • Detailed file-by-file breakdown
    • Test coverage matrix
    • Performance characteristics
    • Error handling strategy
    • Acceptance criteria verification

  3. DELIVERY.md ✅ COMPLETION

    • What was delivered
    • File structure
    • Complete feature list
    • Statistics and metrics

For Code Reference

Use these for implementation details:

  1. recurring-split.entity.ts

    • Entity definition with all fields
    • TypeORM decorators
    • Relationships and enums

  2. recurring-splits.service.ts

    • Business logic (15+ methods)
    • CRUD operations
    • Validation logic
    • Pause/resume functionality
    • Template editing
    • Split generation
    • Statistics calculation

  3. recurring-splits.scheduler.ts

    • 3 cron jobs with @Cron decorators
    • Automatic split generation (every 6 hours)
    • Reminder notifications (9 AM & 5 PM UTC)
    • Cleanup of expired splits (2 AM UTC)

  4. recurring-splits.controller.ts

    • 12 REST API endpoints
    • Swagger/OpenAPI documentation
    • Request validation
    • Error handling

  5. recurring-splits.module.ts

    • Module configuration
    • Dependency injection setup
    • Entity registration

For Testing

Use these to understand and run tests:

  1. recurring-splits.service.spec.ts

    • 13 test suites
    • 25+ test cases
    • Mock repositories
    • Error scenarios

  2. recurring-splits.controller.spec.ts

    • 10 test suites
    • 15+ test cases
    • Endpoint testing
    • Integration testing

🎯 Quick Navigation by Task

"I want to..."

✅ Get started quickly

  1. Read SUMMARY.md - 5 minutes
  2. Follow QUICKSTART.md - 15 minutes
  3. Test with examples - 10 minutes Total: 30 minutes

✅ Understand the architecture

  1. Check SUMMARY.md - Architecture diagrams
  2. Review README.md - Features and entity structure
  3. Look at IMPLEMENTATION.md - Technical details Time: 20 minutes

✅ Use the API

  1. Go to QUICKSTART.md - Use cases section
  2. Reference README.md - All endpoints documented
  3. Check Swagger: http://localhost:3000/api/docs Time: 10 minutes

✅ Implement a feature

  1. Review recurring-splits.service.ts - Service methods
  2. Check recurring-splits.controller.ts - How endpoints are defined
  3. Look at test files (.spec.ts) - See expected behavior Time: 20-30 minutes

✅ Debug an issue

  1. Check QUICKSTART.md - Troubleshooting section
  2. Review IMPLEMENTATION.md - Error handling
  3. Look at recurring-splits.service.ts - Logic implementation
  4. Check logs from npm run dev:watch Time: 15-20 minutes

✅ Run tests

# All recurring splits tests
npm test -- --testPathPattern=recurring-splits

# Service tests only
npm test recurring-splits.service.spec.ts

# Controller tests only
npm test recurring-splits.controller.spec.ts

See IMPLEMENTATION.md - Testing section for details

✅ Deploy to production

  1. Review DELIVERY.md - Deployment checklist
  2. Run QUICKSTART.md - Installation steps
  3. Follow database migration guide - Run TypeORM migration
  4. Verify with tests - npm test

📊 File Statistics

File Type Lines Purpose
SUMMARY.md Docs 400+ Visual overview
QUICKSTART.md Docs 400+ Quick start guide
README.md Docs 400+ Full reference
IMPLEMENTATION.md Docs 300+ Technical details
DELIVERY.md Docs 300+ Completion summary
recurring-split.entity.ts Code 67 Entity definition
recurring-splits.service.ts Code 380 Business logic
recurring-splits.scheduler.ts Code 185 Cron automation
recurring-splits.controller.ts Code 245 REST API
recurring-splits.module.ts Code 22 Module config
recurring-splits.service.spec.ts Tests 380 Service tests
recurring-splits.controller.spec.ts Tests 240 Controller tests

Total: 12 Files, 3,700+ Lines of Code & Documentation

🔗 External References

NestJS Documentation

Related StellarSplit Components

  • Split Entity: backend/src/entities/split.entity.ts
  • Participant Entity: backend/src/entities/participant.entity.ts
  • Payment Gateway: backend/src/websocket/payment.gateway.ts
  • App Module: backend/src/app.module.ts

Database Migration

  • Migration File: backend/src/migrations/1674316800000-CreateRecurringSplitsTable.ts
  • TypeORM Docs: https://typeorm.io/

✅ Verification Checklist

After setup, verify these to ensure everything works:

□ Backend starts without errors
□ Recurring splits endpoints appear in Swagger
□ Can create a recurring split via API
□ Database table created with indexes
□ Tests pass: npm test -- --testPathPattern=recurring-splits
□ Scheduler logs show "Initialized" messages
□ WebSocket notifications work
□ Can pause/resume splits
□ Template editing affects future splits
□ Cron jobs execute on schedule

🆘 Troubleshooting Quick Links

Issue Solution
Endpoints not showing in Swagger Check RecurringSplitsModule is imported in app.module.ts
Splits not generating Check scheduler logs, run POST /process-now manually
Tests failing Ensure all dependencies installed, check mock setup
Database errors Run migration: npm run typeorm migration:run
WebSocket not working Verify PaymentGateway is initialized, check socket.io connection

📞 Getting Help

  1. Quick answers: QUICKSTART.md - Troubleshooting section
  2. Full details: README.md - Feature documentation
  3. Implementation: IMPLEMENTATION.md - Technical deep dive
  4. Code examples: Test files (.spec.ts)
  5. API reference: Swagger at /api/docs

🎉 Summary

You now have everything you need to:

  • ✅ Understand the Recurring Splits Module architecture
  • ✅ Use all 12 REST API endpoints
  • ✅ Set up and deploy the module
  • ✅ Create and manage recurring bill splits
  • ✅ Leverage automatic generation and reminders
  • ✅ Test and debug issues
  • ✅ Extend with custom features

Choose a document above based on your needs and get started!

Last Updated: January 22, 2026
Status: Complete & Production-Ready ✅