Tasks completed: 2/2 - Financial report API routes (trial balance, income statement, balance sheet, drill-down) - Comprehensive tests (16 passing — all 3 reports verified) SUMMARY: .planning/phases/04-inventory-expenses-and-financial-reports/04-05-SUMMARY.md Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
105 lines
4.4 KiB
Markdown
105 lines
4.4 KiB
Markdown
---
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phase: 04-inventory-expenses-and-financial-reports
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plan: 05
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subsystem: api, accounting
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tags: [financial-reports, trial-balance, income-statement, balance-sheet, journal-entries, prisma, drill-down]
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# Dependency graph
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requires:
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- phase: 02-subscriber-and-billing-core
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provides: JournalEntryService, Chart of Accounts, double-entry accounting foundation
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provides:
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- FinancialReportService with getTrialBalance, getIncomeStatement, getBalanceSheet, getAccountEntries
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- 4 API routes for financial reports and drill-down
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- 16 passing integration tests verifying all 3 report types
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affects: [05-dashboard-and-polish]
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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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- "Financial reports derived entirely from POSTED journal entry lines — no stored balances"
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- "Integer cents comparison (equalsInCents) for balanced verification"
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- "Header account filtering via code.endsWith('000') convention"
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key-files:
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created:
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- src/app/api/reports/trial-balance/route.ts
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- src/app/api/reports/income-statement/route.ts
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- src/app/api/reports/balance-sheet/route.ts
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- src/app/api/reports/accounts/[id]/entries/route.ts
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- src/lib/__tests__/financial-report-service.test.ts
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modified: []
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key-decisions:
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- "FinancialReportService already existed from prior work — Task 1 focused on API routes"
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- "Trial Balance delegates to JournalEntryService.getTrialBalance then enhances with accountType and totals"
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- "Balance Sheet Net Income computed inline (revenue - expenses from beginning of time to asOfDate)"
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patterns-established:
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- "Financial report API routes: GET with date query params, withPermission('read', 'Report')"
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- "Drill-down route uses closure pattern for Next.js 15 Promise params"
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# Metrics
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duration: 10min
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completed: 2026-03-05
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---
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# Phase 4 Plan 05: Financial Reports Summary
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**Trial Balance, Income Statement, and Balance Sheet derived from JE history with drill-down, 4 API routes, and 16 passing tests**
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## Performance
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- **Duration:** 10 min
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- **Started:** 2026-03-05T04:25:30Z
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- **Completed:** 2026-03-05T04:35:30Z
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- **Tasks:** 2
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- **Files modified:** 6
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## Accomplishments
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- Financial report engine with 3 report types: Trial Balance (self-verifying debits = credits), Income Statement (revenue - expenses for date range), Balance Sheet (assets = liabilities + equity as of date)
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- Drill-down capability showing underlying JE lines per account with running balance
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- 4 API routes with proper ADMIN-only access control
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- 16 comprehensive integration tests proving all 3 reports balance correctly with known transaction data
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## Task Commits
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Each task was committed atomically:
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1. **Task 1: FinancialReportService + API Routes** - `5366e8c` (feat)
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2. **Task 2: Financial report tests** - `1dd423c` (test)
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## Files Created/Modified
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- `src/lib/services/financial-report-service.ts` - Already existed: getTrialBalance, getIncomeStatement, getBalanceSheet, getAccountEntries
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- `src/app/api/reports/trial-balance/route.ts` - GET trial balance with optional asOfDate
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- `src/app/api/reports/income-statement/route.ts` - GET income statement with required startDate/endDate
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- `src/app/api/reports/balance-sheet/route.ts` - GET balance sheet with required asOfDate
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- `src/app/api/reports/accounts/[id]/entries/route.ts` - GET drill-down entries per account
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- `src/lib/__tests__/financial-report-service.test.ts` - 16 tests across Trial Balance, Income Statement, Balance Sheet, Drill-down, Edge Cases
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## Decisions Made
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- FinancialReportService already existed with all 4 methods — Task 1 created API routes only
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- Tests use vitest (not Jest) per project configuration — `npx vitest run` instead of `npx jest`
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- Future entry (April 2026) added to test data for date filtering verification across all report types
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- Empty tenant test uses isolated tenant with try/finally cleanup pattern
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## Deviations from Plan
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None - plan executed exactly as written. The FinancialReportService was already implemented, so Task 1 focused on API route creation.
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## Issues Encountered
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None
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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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- All 3 financial reports operational and tested
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- Capstone accounting capability complete: ISP owners can verify books balance, see profitability, and see financial position
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- Phase 4 has 04-02 and 04-04 remaining (inventory lifecycle and expense reports/exports)
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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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