Tasks completed: 2/2 - ExpenseReportService and AuditTrailService with API routes - 9 passing integration tests SUMMARY: .planning/phases/04-inventory-expenses-and-financial-reports/04-04-SUMMARY.md Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
108 lines
4.3 KiB
Markdown
108 lines
4.3 KiB
Markdown
---
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phase: 04-inventory-expenses-and-financial-reports
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plan: 04
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subsystem: reports, accounting
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tags: [expense-reports, audit-trail, journal-entries, ACCT-08, prisma]
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# Dependency graph
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requires:
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- phase: 04-03
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provides: ExpenseService, VendorService, expense categories, vendor model
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- phase: 02-02
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provides: JournalEntryService, referenceType/referenceId on JEs
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provides:
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- ExpenseReportService with category/vendor/summary aggregation
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- AuditTrailService with JE audit trail (ACCT-08 compliance)
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- Expense report API routes
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- JE audit trail API route
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affects: []
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# Tech tracking
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tech-stack:
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added: []
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patterns:
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- "Expense aggregation in JS from Prisma findMany (same pattern as outstanding reports)"
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- "AuditTrailService works across all JE sources via referenceType/referenceId"
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key-files:
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created:
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- src/lib/services/expense-report-service.ts
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- src/lib/services/audit-trail-service.ts
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- src/app/api/reports/expenses/route.ts
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- src/app/api/reports/expenses/by-vendor/route.ts
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- src/app/api/accounting/journal-entries/[id]/audit/route.ts
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- src/lib/__tests__/expense-report-service.test.ts
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modified: []
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key-decisions:
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- "Expense aggregation done in JS after findMany (same pattern as outstanding reports, collector balances)"
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- "AuditTrailService queries JEs by referenceType+referenceId -- works for all sources (Invoice, Payment, Expense, Collection, etc.)"
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- "No Vendor bucket uses null vendorId key in grouping -- expenses without vendor are still reported"
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patterns-established:
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- "AuditTrailService pattern: getJournalEntryAudit for single JE, getAuditTrailForEntity for all JEs related to a source record"
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# Metrics
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duration: 20min
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completed: 2026-03-05
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---
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# Phase 4 Plan 4: Expense Reports and Audit Trail Summary
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**ExpenseReportService aggregates spending by category/vendor with date filtering; AuditTrailService traces every JE to its creator and source transaction (ACCT-08)**
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## Performance
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- **Duration:** 20 min
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- **Started:** 2026-03-05T06:35:27Z
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- **Completed:** 2026-03-05T06:55:12Z
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- **Tasks:** 2
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- **Files created:** 6
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## Accomplishments
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- Expense reports by category and vendor with date range filtering (only POSTED expenses)
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- Full JE audit trail showing creator, timestamp, source reference, and line details
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- Audit trail works across ALL JE sources (proven with Payment JE test)
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- 9 passing integration tests covering reports, filtering, and cross-source audit
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## Task Commits
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Each task was committed atomically:
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1. **Task 1: ExpenseReportService and AuditTrailService** - `6bc24a3` (feat)
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2. **Task 2: Tests for expense reports and audit trail** - `787b22e` (test)
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## Files Created/Modified
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- `src/lib/services/expense-report-service.ts` - Expense aggregation by category, vendor, and combined summary
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- `src/lib/services/audit-trail-service.ts` - JE audit trail with creator, source reference, approval info
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- `src/app/api/reports/expenses/route.ts` - GET expense summary by category (ADMIN)
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- `src/app/api/reports/expenses/by-vendor/route.ts` - GET expense summary by vendor (ADMIN)
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- `src/app/api/accounting/journal-entries/[id]/audit/route.ts` - GET JE audit trail (ADMIN, OFFICE_STAFF)
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- `src/lib/__tests__/expense-report-service.test.ts` - 9 integration tests
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## Decisions Made
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- Expense aggregation done in JS after findMany -- same pattern as outstanding reports and collector balances (acceptable for ISP scale)
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- AuditTrailService queries by referenceType+referenceId, works for all JE sources without source-specific logic
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- "No Vendor" bucket included in vendor reports for expenses without vendorId
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- Decimal amounts serialized as strings in API responses (consistent with other report endpoints)
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## Deviations from Plan
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None -- plan executed exactly as written.
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## Issues Encountered
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- Plan specified `npx jest` for test verification but project uses Vitest -- used `npx vitest run` instead (not a code deviation, just a verification command difference)
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## User Setup Required
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None -- no external service configuration required.
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## Next Phase Readiness
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- Phase 4 is now fully complete (all 5 plans: 04-01 through 04-05)
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- All financial reporting capabilities built: trial balance, income statement, balance sheet, expense reports, and audit trail
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- Ready for Phase 5 (Portal and Dashboard)
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---
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*Phase: 04-inventory-expenses-and-financial-reports*
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*Completed: 2026-03-05*
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