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Jakob WennbergandClaude Opus 5 27ae59040e fix(transactions): retire stale invoice match pointers when an invoice settles (#1313)
* fix(transactions): retire stale invoice match pointers when an invoice settles

potential_invoice_id / potential_supplier_invoice_id are write-once import
suggestions: nothing revisited them once written. With recurring same-amount
invoices, an earlier suggestion pointed transaction A at invoice X, X was then
paid off by transaction B, and A kept pointing at a fully paid invoice. The
match dialog computed its amount diff against that invoice's 0 kr
remaining_amount and reported a bogus partial payment, and the dead pointer
also blocked a fresh suggestion: both re-suggestion scans require the column
to be NULL.

Add one shared helper, clearSettledInvoiceSuggestions(), that nulls a settled
invoice's own suggestion column on every other transaction of the same
company, scoped by company_id and by that invoice id only, never widening to
the confirmed invoice_id / supplier_invoice_id links. It is best effort by
construction: every caller has already booked a payment verifikat, so a failed
cleanup logs and returns instead of failing the settle.

Wired into every path where an invoice reaches paid through a payment:
the dashboard and v1 match-invoice / match-supplier-invoice routes, the
dashboard and v1 mark-paid routes, settleInvoicePayment, the batch allocation
route (per fully settled allocation), linkInvoiceToVoucher and
linkSupplierInvoiceToVoucher, linkTransactionToJournalEntry, and the MCP
staged-operation executors for mark_invoice_paid and
match_transaction_invoice. Partial payments are deliberately left alone: a
partially paid invoice is still matchable. The v1 supplier match route also
clears its own row's hint, which it was missing next to its dashboard twin.

Read-time revalidation stays as the backstop for the paths not wired up here.
countSuggestedMatches now delegates to listSuggestedMatches, which already
revalidates candidates, so the worklist badge can no longer claim a number the
list refuses to render.

A data-only backfill migration retires the pointers already stranded in the
database. It touches no journal entry, verifikat or period-locked data, is
idempotent, and its status lists mirror lib/invoices/matchable-statuses.ts.

Fixes #1259

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(transactions): wire the MCP batch allocation into the settled-pointer cleanup

Review follow-up on the #1259 fix.

commitMatchBatchAllocate calls the same match_batch_allocate RPC as the
dashboard route, and gnubok_match_batch_allocate is a live staged MCP tool, so
an agent settling a samlingsbetalning reproduced the issue exactly: the RPC
nulls potential_invoice_id / potential_supplier_invoice_id only on the source
transaction, leaving every other transaction of the company pointing at an
invoice the batch just closed. The per-allocation loop moves into
clearSettledBatchAllocationSuggestions() so the HTTP route and the MCP executor
run the same code and cannot drift again, with a commit-path test pinning that
only the fully settled allocation is retired.

The enlarged badge scan is made safe. countSuggestedMatches now feeds up to 200
ids into listSuggestedMatches, past the 150 per .in() that countInboxDocuments
already chunks for, so the candidate lookups are chunked at IN_CLAUSE_CHUNK too
and their ids deduped. Both lookups now check .error: previously a 414, a 500 or
an RLS change produced empty maps, an empty list and a zero badge with nothing
logged. Every failure branch here logs companyId, matching the logAndZero
convention.

Also: restore the anchorSupplierInvoiceDocument doc comment above its own call
in the dashboard supplier-invoice mark-paid route (the #1259 block had been
inserted between them), and assert the transaction update payload in the v1
match-supplier-invoice test, which now covers the potential_supplier_invoice_id
null that the route was missing next to its dashboard twin.

Fixes #1259

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-30 18:52:24 +02:00
Jakob WennbergandClaude Opus 4.7 7eb8715417 feat(transactions): split-payment allocator — 1 tx → N invoices (#603)
* fix(category-mapping): use leaf BAS accounts instead of group codes

3900, 5800, 6200 are BAS gruppkonton (header codes) and shouldn't carry
postings. Switched the default mappings to the matching leaf accounts:

  - income_other:     3900 -> 3999 (Övriga rörelseintäkter)
  - expense_travel:   5800 -> 5890 (Övriga resekostnader)
  - expense_telecom:  6200 -> 6230 (Datakommunikation)

The fallback for income_other inside getCategoryAccountMapping was also
hardcoded to '3900'; updated to '3999' for consistency.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* feat(transactions): split-payment allocator — 1 tx → N invoices

Closes one of the two flows that motivated PR #602's foundation:
allocating a single bank transaction across multiple customer OR
multiple supplier invoices, with one combined verifikat
(samlingsverifikation per BFL 5 kap 6§ st 3).

## Backend (Phase 3a)

- **PL/pgSQL RPC** match_batch_allocate (~400 lines): locks the tx +
  each target invoice with SELECT … FOR UPDATE in id order, validates
  status/currency/remaining/direction before any write, builds the
  combined verifikat via commit_journal_entry (atomically assigns
  voucher_number + flips draft→posted), inserts N rows in
  invoice_payments or supplier_invoice_payments pointing at the same
  JE, advances paid_amount/remaining_amount/status per invoice. Returns
  { ok, journal_entry_id, voucher_number, allocations: [...] } on
  success or { ok: false, code, details } on guard failure. Mixed
  customer+supplier kinds are rejected (v1 scope).

- **Endpoint** POST /api/transactions/[id]/match-batch — thin wrapper
  around the RPC. Validates body via MatchBatchSchema (zod
  discriminatedUnion + superRefine to catch mixed-kinds at the schema
  layer). On RPC success, emits one invoice.match_confirmed or
  supplier_invoice.match_confirmed event per allocation so existing
  subscribers (reminders, automations, processing-history) keep
  working. Maps the structured RPC error envelope to
  errorResponseFromCode.

- **16 new BATCH_* error codes** (sv+en): BATCH_TX_NOT_FOUND,
  BATCH_TX_ALREADY_BOOKED, BATCH_OVERSHOOT, BATCH_AMOUNT_EXCEEDS_TX,
  BATCH_MIXED_KINDS_UNSUPPORTED, BATCH_DIRECTION_MISMATCH,
  BATCH_CURRENCY_MISMATCH, BATCH_PERIOD_LOCKED, BATCH_RPC_FAILED, etc.

## UI (Phase 5a)

- **MatchAllocationDialog** (components/transactions/) — direction-
  aware (positive tx → customer invoices, negative → supplier). Search
  + selectable list of open invoices. Per-row amount input with default
  = min(invoice.remaining, tx_remaining_budget). Live tally with
  green-check balanced state, red overshoot warning, gray leftover
  note. Confirm button disabled on overshoot. POSTs to /match-batch
  and on 200 triggers the same exit animation as single-tx match.

- **Inbox row** gains a second outline icon button (Split icon) next
  to the existing 1:1 match button, gated by the same
  showInvoiceMatchButton predicate. Tooltip explains the direction-
  aware split. Opens MatchAllocationDialog.

- **i18n** strings under tx_match_allocation namespace in sv.json
  and en.json (32 keys each).

## Tests

- tests/pg/match-batch-allocate.pg.test.ts — 5 pg-real tests covering
  combined verifikat shape, overshoot guard, already-booked tx,
  direction mismatch, mixed-kinds rejection.
- app/api/transactions/[id]/match-batch/__tests__/route.test.ts — 5
  unit tests covering schema validation, mixed-kinds, happy path,
  structured-error mapping, raw-error → BATCH_RPC_FAILED.

63 unit tests pass across the touched paths. The RPC migration was
already applied to remote in an earlier Phase 3a session (idempotent
CREATE OR REPLACE FUNCTION; the next replay is a no-op).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(match-batch): PR #603 review round 1 + CI fixes

Closes both CI failures and the three real review findings.

## CI fixes

- **pg-real failure**: the RPC declared
  `v_journal_entry_id uuid := uuid_generate_v4()` which fails in the CI
  Postgres image (uuid-ossp extension is off). Switched to
  `gen_random_uuid()` — the codebase standard already used by
  supplier_invoices, invoice_inbox, etc.
- **core-only failure**: my earlier BAS leaf-account commit
  (3900→3999, 5800→5890, 6200→6230) didn't update the matching
  `lib/bookkeeping/__tests__/category-mapping.test.ts` expectations,
  and `getDefaultAccountForCategory`'s fallback for `income_*` was
  still hardcoded to '3900'. Updated both.

## Review findings (greptile)

- **P1 deadlock-stable locking** (`match_batch_allocate.sql:11`): the
  validation `FOR UPDATE` loop ran in caller-supplied array order. Two
  concurrent calls with overlapping invoice sets in opposite orders
  could deadlock and one would abort with `BATCH_RPC_FAILED`. Now
  all three loops (validate, build lines, advance invoices) iterate
  via `SELECT … FROM jsonb_array_elements(…) ORDER BY
  COALESCE(invoice_id, supplier_invoice_id)`, giving a stable global
  lock order regardless of how the caller ordered the JSON array.

- **P1 duplicate-allocation detection** (`match_batch_allocate.sql:163`):
  the same invoice_id listed twice would pass the per-row overshoot
  guard (both iterations read the original `remaining_amount`) and
  the write loop would insert two `invoice_payments` rows for the
  same invoice. Added a `v_seen_ids text[]` check in the validation
  loop and a new `BATCH_DUPLICATE_ALLOCATION` error code (sv + en).
  The dialog already prevents this UI-side via `if (prev[candidate.id]
  return prev` — the RPC guard is the defense-in-depth layer.

- **P2 zod `.positive()`** (`schemas.ts:544`): allocation amount was
  `nonNegativeAmount` (allowing 0), passing schema validation only to
  be rejected by the RPC with `BATCH_INVALID_AMOUNT`. Now
  `z.number().positive(…)` so 0-amount entries fail at the schema
  layer with a per-field path, cleaner 400.

- **P2 strict `> 0` direction check** (`MatchAllocationDialog.tsx:82`):
  used `amount >= 0` to pick customer-side, but a zero-amount tx would
  load customer candidates only to hit `BATCH_TX_ZERO_AMOUNT` at
  submit time after the user has filled in allocations. Switched to
  `> 0` so 0-amount tx never reaches the dialog at all (it's rejected
  by the RPC immediately).

The fourth Greptile comment (the schema P2 about amount validation)
overlaps with the third; addressed in the same edit.

## Verification

- 112 unit tests pass across touched paths
- ESLint clean
- New pg-real test `tests/pg/match-batch-allocate.pg.test.ts` covers
  the dedupe scenario (same supplier invoice listed twice with summing
  amounts that individually pass per-row overshoot)
- RPC patch applied to remote via Supabase MCP

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(match-batch): PR #603 review round 2 — compliance hardening

Addresses the actionable findings from compliance-swarm and
Swedish-accounting-compliance reviews. Six small RPC changes + two
TS-side guards, all bundled in one follow-up migration.

## Security

- **(GDPR Art.5(1)(f) / ISO A.8.2) Caller verification**: SECURITY
  DEFINER bypasses RLS, and the prior RPC accepted any
  (p_user_id, p_company_id) pair from the route. Now the function
  rejects with new `BATCH_UNAUTHORIZED` (sv+en, HTTP 403) if
  `auth.uid()` is not a member of `p_company_id`. Pattern lifted from
  `harden_invoice_number_rpcs` (#20260510140000).
- **(OWASP V4.2) Allocation cap**: `MatchBatchSchema.allocations` now
  carries `.max(100)` to prevent DoS via unbounded FOR UPDATE locks.

## Swedish accounting correctness

- **source_type per direction**: was hardcoded to `'invoice_paid'` for
  both customer + supplier batches, mis-routing behandlingshistorik
  filters. Customer batches keep `'invoice_paid'`, supplier batches now
  write `'supplier_invoice_paid'`.
- **Fiscal-period determinism**: `LIMIT 1` on the period lookup was
  non-deterministic on overlap (e.g. corrected broken year). Added
  `ORDER BY period_start DESC` so the most recent matching period
  wins.
- **Tolerance harmonisation**: cross-allocation sum used `+0.01`
  tolerance while per-row used `+0.005`. Both now `+0.005` so a
  multi-row batch can't drift ~0.01 SEK while each row passes
  individually.
- **`transactions.category` no longer overwritten**: was forced to
  `'income_services'` (→ BAS 3001 at 25% VAT) for any customer batch,
  misrepresenting reduced-rate / export / EU-service invoices. The
  category is only meaningful 1:1 with a single invoice; batches now
  leave it as-is, mirroring the supplier-side `ELSE category` branch.

## Tests

- `tests/pg/match-batch-allocate.pg.test.ts` now wraps every RPC call
  in `withUserContext(userId)` so `auth.uid()` resolves to the seeded
  owner. Without this the new membership check would have failed all
  existing tests.
- New pg-real test: `rejects with BATCH_UNAUTHORIZED when caller is
  not a member of the company` — outsider user gets explicit refusal.
- New happy-path assertion: `source_type = 'supplier_invoice_paid'`
  on the combined verifikat for supplier batches.

15 unit tests pass on the touched paths. RPC patch applied to remote
via Supabase MCP. Out-of-scope mcp-server changes still parked locally.

Skipped findings (documented in PR comment thread):
  - V8.2.1 ownership pre-check at route layer (RPC enforces it)
  - V4.5 / Art.5(1)(b) narrower API response and event payload —
    typed contracts require the full shapes
  - V2.4 rate-limiting — system-level, applies to all match endpoints
  - A.8.28 client-side RLS reliance — documented architectural choice
  - Direction pre-check at API layer (RPC catches with cleaner code)
  - V16 + Art.32 + Art.5(1)(b) low-severity logging nits

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-29 13:45:41 +02:00