@startwbs Invoicing Backend — Work Breakdown

title Invoicing Backend — Hephaestus Task Breakdown

* Backend Jobs & Automation (Grails)
** 1. Domain Models
*** 1.1 Invoice.groovy
**** Fields: invoiceNumber, customer*, dates, amounts, status, payment*
**** Constraints & validation
**** Business methods: calculateTotals(), markAsPaid(), isOverdue()
*** 1.2 Setting.groovy
**** Key-value store with category grouping
**** Static helpers: getValue(), setValue(), getByCategory()
** 2. ETL & Data Pipelines
*** 2.1 Invoice Data Import
**** CSV/Excel ingestion from external systems
**** Field mapping & validation rules
**** Duplicate detection & merge strategy
*** 2.2 Invoice Data Export
**** Generate reports in CSV, JSON, XML formats
**** Scheduled nightly export to accounting systems
**** DataPallas integration for document bursting
** 3. Scheduled Jobs & Cron Tasks
*** 3.1 OverdueDetectionJob (Quartz)
**** Daily scan: invoices where status=sent AND dueDate < today
**** Batch update status to overdue
**** Trigger notification events
*** 3.2 InvoiceReminderJob
**** Weekly: email reminders for unpaid invoices approaching due date
**** Configurable reminder intervals (7d, 3d, 1d before due)
*** 3.3 ReportGenerationJob
**** Monthly: aggregate revenue, outstanding, overdue stats
**** Export summary to configured output directory
** 4. Batch Processing
*** 4.1 BulkInvoiceGenerator
**** Generate invoices in batch from customer roster + template
**** Support recurring invoice schedules (monthly, quarterly)
*** 4.2 PaymentReconciliation
**** Match bank statement entries to open invoices
**** Flag unmatched payments for manual review
** 5. Bootstrap & Seed Data
*** 5.1 BootStrap.groovy
**** 10 sample invoices (mixed statuses)
**** Default settings (theme, company, currency)
**** Sample job schedules (overdue check, reminders)

@endwbs
