Files
accounted/app/api/transactions/[id]/match-invoice/route.ts
T
Jakob WennbergandClaude Opus 4.8 5777f51940 Reject overpayment on all invoice-match paths (audit C3) (#647)
* fix(invoices): reject overpayment on all invoice-match paths (audit C3)

The paid/remaining math was copy-pasted across three sites; the dashboard match-invoice route guarded against overpayment but the v1 public API route and the agent/MCP commitMatchTransactionInvoice had drifted WITHOUT it — silently accepting payment > remaining (recording paid_amount > total, over-crediting AR; cleanup needs storno, not edit).

- New lib/invoices/apply-invoice-payment.ts planInvoicePayment(): single source of the paid/remaining/status math + overpayment guard, via canonical roundOre (@/lib/money, guard rail #9). FX-agnostic — caller passes the invoice-currency amount.
- All three sites delegate; the guard runs BEFORE journal-entry creation so a rejected match never burns a voucher number. Dashboard behaviour unchanged (faithful extraction — its existing overpayment test still passes, the equivalence anchor). v1 returns MATCH_AMOUNT_EXCEEDS_REMAINING; commit returns the same registry message at 400.
- Removes 7 hand-rolled Math.round(x*100)/100 sites; antipattern guard ratchets 668 -> 661.
- Unit tests for the helper (overpayment rejection, half-öre tolerance, remaining_amount fallback).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* review: run overpayment guard before the storno (PR #647)

greptile: in commit.ts and the v1 route the conflicting-JE storno ran BEFORE the new guard, so a rejected overpayment would still reverse the transaction's prior JE and null its journal_entry_id — a side effect on a rejected match. Move planInvoicePayment above the storno so a rejection leaves the transaction fully untouched. (The dashboard route's pre-existing storno-before-guard ordering is FX-entangled and unchanged here; noted as a follow-up.)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-03 17:00:22 +02:00

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import { NextResponse } from 'next/server'
import { createInvoiceCashEntry } from '@/lib/bookkeeping/invoice-entries'
import { buildInvoicePaymentClearingLines } from '@/lib/bookkeeping/invoice-payment-lines'
import { fetchExchangeRate } from '@/lib/currency/riksbanken'
import { reverseEntry, createJournalEntry, findFiscalPeriod } from '@/lib/bookkeeping/engine'
import { AccountsNotInChartError, isBookkeepingError } from '@/lib/bookkeeping/errors'
import { getErrorMessage } from '@/lib/errors/get-error-message'
import { withRouteContext } from '@/lib/api/with-route-context'
import { errorResponse, errorResponseFromCode } from '@/lib/errors/get-structured-error'
import { validateBody } from '@/lib/api/validate'
import { MatchInvoiceSchema } from '@/lib/api/schemas'
import { logMatchEvent } from '@/lib/invoices/match-log'
import { planInvoicePayment } from '@/lib/invoices/apply-invoice-payment'
import { detectDuplicatePaymentVoucher } from '@/lib/invoices/duplicate-payment-detection'
import { eventBus } from '@/lib/events/bus'
import { ensureInitialized } from '@/lib/init'
import type { Currency, EntityType, Invoice, Transaction } from '@/types'
ensureInitialized()
/**
* POST /api/transactions/[id]/match-invoice
*
* Confirms an invoice match for a transaction. Supports partial payments:
* 1. If transaction has an auto-categorization journal entry, storno it first
* 2. Links transaction to invoice (sets invoice_id)
* 3. Updates invoice status to 'paid' or 'partially_paid'
* 4. Records payment in invoice_payments table
* 5. Creates journal entry for payment receipt
* - Debit 1930 Företagskonto (Bank)
* - Credit 1510 Kundfordringar (Accounts Receivable)
*/
export const POST = withRouteContext(
'transaction.match_invoice',
async (request, ctx, { params }: { params: Promise<{ id: string }> }) => {
const { id: transactionId } = await params
const { user, supabase, companyId, log, requestId } = ctx
const validation = await validateBody(request, MatchInvoiceSchema, {
log,
operation: 'transaction.match_invoice',
})
if (!validation.success) return validation.response
const { invoice_id, force, expected_journal_entry_id, lines: customLines } = validation.data
const txLog = log.child({ transactionId, invoiceId: invoice_id })
const { data: transaction, error: fetchTxError } = await supabase
.from('transactions')
.select('*')
.eq('id', transactionId)
.eq('company_id', companyId)
.single()
if (fetchTxError || !transaction) {
return errorResponseFromCode('TX_CATEGORIZE_TX_NOT_FOUND', txLog, { requestId })
}
if (transaction.amount <= 0) {
return errorResponseFromCode('MATCH_INVOICE_NOT_INCOME', txLog, {
requestId,
details: { amount: transaction.amount },
})
}
if (transaction.invoice_id) {
return errorResponseFromCode('MATCH_INVOICE_TX_ALREADY_LINKED', txLog, {
requestId,
details: { existingInvoiceId: transaction.invoice_id },
})
}
const { data: invoice, error: fetchInvError } = await supabase
.from('invoices')
.select('*, customer:customers(*), items:invoice_items(*)')
.eq('id', invoice_id)
.eq('company_id', companyId)
.single()
if (fetchInvError || !invoice) {
return errorResponseFromCode('MATCH_INVOICE_NOT_FOUND', txLog, { requestId })
}
// Defense-in-depth: the InvoicePicker UI filters proformas / delivery
// notes out of the candidate list, but a direct API call could still
// pass a proforma id. A proforma is not a faktura per ML 17 kap 24§ —
// no VAT obligation, no binding payment — so matching one against a
// bank receipt would book income and VAT incorrectly.
const docType = (invoice as { document_type?: string }).document_type ?? 'invoice'
if (docType !== 'invoice') {
return errorResponseFromCode('MATCH_INVOICE_NOT_INVOICE_TYPE', txLog, {
requestId,
details: { documentType: docType },
})
}
if (invoice.status !== 'sent' && invoice.status !== 'overdue' && invoice.status !== 'partially_paid') {
return errorResponseFromCode('MATCH_INVOICE_NOT_OPEN', txLog, {
requestId,
details: { currentStatus: invoice.status },
})
}
// Cross-currency settlement (replaces the PR #614 round-9 block).
//
// invoices.paid_amount / remaining_amount are denominated in
// invoice.currency; invoice_payments rows carry currency =
// invoice.currency with amount in that currency. When tx and invoice
// currencies differ, we convert tx.amount (SEK) to invoice currency
// using the Riksbanken spot rate on the payment date (ML 8 kap 21–23§)
// and accumulate / record in invoice currency throughout. The JE-lines
// helper gets the same converted amount so the verifikat balances
// exactly (FX-diff posted to 3960/7960). A manual rate may be supplied
// via the request body when the lookup fails (e.g. bank-statement rate
// when Riksbanken hasn't published for the date yet).
type FxConversion =
| { required: false }
| {
required: true
rate: number
rate_date: string
paidInInvoiceCurrency: number
// Provenance of the rate actually used, recorded for the audit
// trail: 'manual' = caller-supplied from a bank statement (Riksbanken
// had no rate for the date), 'riksbanken' = spot rate fetched on the
// payment date. A manual override on a money path must be traceable
// (BFL 5 kap 6–7§; ML 8 kap 21–23§).
source: 'manual' | 'riksbanken'
}
let fx: FxConversion = { required: false }
if (transaction.currency !== invoice.currency) {
const manualRate =
typeof validation.data?.manual_exchange_rate === 'number' &&
validation.data.manual_exchange_rate > 0
? validation.data.manual_exchange_rate
: null
let rate = manualRate
let rateDate = transaction.date
if (rate == null) {
const rateInfo = await fetchExchangeRate(
invoice.currency as Currency,
new Date(transaction.date),
)
if (rateInfo && rateInfo.rate > 0) {
rate = rateInfo.rate
rateDate = rateInfo.date
}
}
if (rate == null || rate <= 0) {
return errorResponseFromCode('MATCH_INVOICE_FX_RATE_UNAVAILABLE', txLog, {
requestId,
details: {
transactionCurrency: transaction.currency,
invoiceCurrency: invoice.currency,
paymentDate: transaction.date,
},
})
}
const txAbsSek =
transaction.currency === 'SEK'
? Math.abs(transaction.amount)
: Math.abs(transaction.amount) * (transaction.exchange_rate ?? 1)
const paidInInvoiceCurrency = Math.round((txAbsSek / rate) * 10000) / 10000
fx = {
required: true,
rate,
rate_date: rateDate,
paidInInvoiceCurrency,
source: manualRate != null ? 'manual' : 'riksbanken',
}
}
// Hard-duplicate guard: if the invoice is 'sent'/'overdue' but already
// has a payment voucher attached (status leak), refuse — booking again
// would double-credit 1510 / double-debit 1930. Partially-paid invoices
// pass through; additional payments are legitimate.
if (invoice.status === 'sent' || invoice.status === 'overdue') {
const { data: existingPayments } = await supabase
.from('invoice_payments')
.select('journal_entry_id')
.eq('company_id', companyId)
.eq('invoice_id', invoice_id)
.not('journal_entry_id', 'is', null)
.limit(1)
if (existingPayments && existingPayments.length > 0) {
return errorResponseFromCode('MATCH_INVOICE_ALREADY_HAS_PAYMENT_VOUCHER', txLog, {
requestId,
details: {
existing_journal_entry_id: (existingPayments[0] as { journal_entry_id: string }).journal_entry_id,
},
})
}
}
// Soft-duplicate guard: scan for a manual verifikation that already
// books this bank receipt outside the invoice flow. The customer's
// exact case: they posted Dr 1930 / Cr 3100 by hand; the matcher
// would otherwise create a second voucher and double-book. Bypassed
// with force=true after the user reviews the candidate in the UI.
//
// force=true is bound to a specific candidate via expected_journal_entry_id
// (validated by the schema). We re-detect the candidate server-side and
// refuse the bypass if it no longer matches: a stale or fabricated
// expected id cannot wave the guard away. The pre-flight runs even when
// a candidate is detected so the audit log records the verifikation the
// user opted to dismiss.
let dismissedCandidateId: string | null = null
try {
const candidate = await detectDuplicatePaymentVoucher(supabase, {
companyId: companyId!,
transactionId,
transactionDate: transaction.date,
transactionAmount: transaction.amount,
})
if (!force) {
if (candidate) {
return errorResponseFromCode('MATCH_INVOICE_POSSIBLE_DUPLICATE', txLog, {
requestId,
details: { candidate },
})
}
} else {
if (!candidate || candidate.journal_entry_id !== expected_journal_entry_id) {
// Either no current duplicate (force is moot — caller should retry
// without force) or the candidate the caller claims to have seen
// doesn't match what we detect now. Reject so an automation can't
// smuggle force=true past the guard with a guessed id.
return errorResponseFromCode('MATCH_INVOICE_FORCE_CANDIDATE_MISMATCH', txLog, {
requestId,
details: {
expected_journal_entry_id,
detected_journal_entry_id: candidate?.journal_entry_id ?? null,
},
})
}
dismissedCandidateId = candidate.journal_entry_id
}
} catch (err) {
// Detection failure must not block the non-force match — log and
// continue. force=true requires a successful detection, so re-throw
// its branch as a clean 500 via the wrapper.
if (force) {
txLog.error('duplicate-payment-voucher detection failed under force=true', err as Error)
return errorResponse(err, txLog, { requestId })
}
txLog.warn('duplicate-payment-voucher detection failed (continuing)', err as Error)
}
if (force && dismissedCandidateId) {
txLog.warn('soft-duplicate guard bypassed', {
reason: 'force=true',
requestId,
transactionId,
invoiceId: invoice_id,
userId: user.id,
// The verifikation the user reviewed and dismissed. Recorded so the
// override can be traced back to the specific duplicate that was
// surfaced in the pre-flight UI.
dismissedJournalEntryId: dismissedCandidateId,
})
}
// Storno conflicting auto-categorization JE before any other state change.
// If storno fails, return immediately — nothing else has been modified.
if (transaction.journal_entry_id) {
try {
await reverseEntry(supabase, companyId, user.id, transaction.journal_entry_id)
const { error: clearJeError } = await supabase
.from('transactions')
.update({ journal_entry_id: null })
.eq('id', transactionId)
if (clearJeError) {
txLog.warn('failed to clear journal_entry_id after storno', clearJeError)
}
logMatchEvent(supabase, user.id, transactionId, 'storno_conflict_resolved', {
invoiceId: invoice_id,
previousState: { journal_entry_id: transaction.journal_entry_id },
newState: { journal_entry_id: null },
})
} catch (err) {
txLog.error('failed to storno conflicting journal entry', err as Error)
return errorResponse(err, txLog, { requestId })
}
}
const now = new Date().toISOString()
// paidAmountInInvoiceCurrency is what gets accumulated into
// invoice.paid_amount / remaining_amount and stored on the
// invoice_payments row. For same-currency it's just tx.amount; for
// cross-currency it's the Riksbanken-rate conversion computed above.
// Using SEK directly for a USD invoice would corrupt the column units
// (the bug the PR #614 round-9 block was working around).
const paidAmountInInvoiceCurrency = fx.required
? fx.paidInInvoiceCurrency
: transaction.amount
// Overshoot guard + paid/remaining math — shared with the v1 and agent
// (commit) paths via planInvoicePayment so they cannot drift again. Runs
// before any JE is created, so a doomed match never burns a voucher number.
const payment = planInvoicePayment(invoice, paidAmountInInvoiceCurrency)
if (!payment.ok) {
return errorResponseFromCode('MATCH_AMOUNT_EXCEEDS_REMAINING', txLog, {
requestId,
details: payment.details,
})
}
const { newPaidAmount, newRemaining, isFullyPaid, newStatus } = payment.plan
const { data: settings } = await supabase
.from('company_settings')
.select('accounting_method, entity_type')
.eq('company_id', companyId)
.single()
const accountingMethod = settings?.accounting_method || 'accrual'
const entityType = (settings?.entity_type as EntityType) || 'enskild_firma'
// Drive the JE shape from the INVOICE'S booking state, not from the
// company's current accounting_method setting. If the invoice was already
// booked at send (Dr 1510 / Cr 30xx + VAT) we MUST clear 1510 here —
// otherwise the receivable stays orphaned and 30xx + VAT get double-
// counted. This happens when a company sent invoices under accrual,
// then flipped to kontantmetoden before payment arrived.
// Only when the invoice carries no prior JE (pure kontantmetoden, no
// receivable on the books) do we recognise revenue + VAT here.
const invoiceAlreadyBooked = !!(invoice as { journal_entry_id?: string | null }).journal_entry_id
const useCashEntry = !invoiceAlreadyBooked && accountingMethod === 'cash' && isFullyPaid
let journalEntryId: string | null = null
let journalEntryError: string | null = null
try {
if (customLines) {
// User-edited rows from the match dialog. Validate balance, then
// post via createJournalEntry directly. source_type still derives
// from the routing decision so downstream payment-sync (which keys
// off invoice_paid / invoice_cash_payment) keeps working.
const totalDebit = customLines.reduce((s, l) => s + l.debit_amount, 0)
const totalCredit = customLines.reduce((s, l) => s + l.credit_amount, 0)
if (Math.round((totalDebit - totalCredit) * 100) !== 0 || totalDebit <= 0) {
return errorResponseFromCode('INVOICE_PAID_LINES_UNBALANCED', txLog, {
requestId,
details: { totalDebit, totalCredit },
})
}
const fiscalPeriodId = await findFiscalPeriod(supabase, companyId!, transaction.date)
if (!fiscalPeriodId) {
return errorResponseFromCode('INVOICE_PAID_NO_FISCAL_PERIOD', txLog, {
requestId,
details: { paymentDate: transaction.date },
})
}
const sourceType = useCashEntry ? 'invoice_cash_payment' : 'invoice_paid'
const desc = invoice.customer?.name
? `Inbetalning kundfaktura ${invoice.invoice_number}, ${invoice.customer.name}`
: `Inbetalning kundfaktura ${invoice.invoice_number}`
const journalEntry = await createJournalEntry(supabase, companyId!, user.id, {
fiscal_period_id: fiscalPeriodId,
entry_date: transaction.date,
description: desc,
source_type: sourceType,
source_id: invoice.id,
lines: customLines,
})
journalEntryId = journalEntry?.id ?? null
} else if (useCashEntry) {
const journalEntry = await createInvoiceCashEntry(
supabase, companyId, user.id, invoice as Invoice, transaction.date,
entityType, invoice.customer?.name,
)
journalEntryId = journalEntry?.id ?? null
} else {
// Clearing entry against 1510. Covers accrual, cash-with-prior-JE
// (mid-stream switch), and cash partial. The cash partial path is
// intentional — under kontantmetoden 1510 has no prior balance, so
// partials leave a credit on 1510 that gets resolved on final
// payment when createInvoiceCashEntry would normally run.
//
// Builds lines via buildInvoicePaymentClearingLines so the verifikat
// is byte-identical to what the preview route showed the user. For
// same-currency invoices that's just 1930/1510. For cross-currency
// it also posts a 3960/7960 FX-diff line so the verifikat balances
// per BFL 5 kap 4–5§. Bypasses createInvoicePaymentJournalEntry on
// this single path (mark-paid and other callers still use it) —
// see lib/bookkeeping/invoice-payment-lines.ts for the contract.
const fiscalPeriodId = await findFiscalPeriod(supabase, companyId!, transaction.date)
if (!fiscalPeriodId) {
return errorResponseFromCode('INVOICE_PAID_NO_FISCAL_PERIOD', txLog, {
requestId,
details: { paymentDate: transaction.date },
})
}
const desc = invoice.customer?.name
? `Inbetalning kundfaktura ${invoice.invoice_number}, ${invoice.customer.name}`
: `Inbetalning kundfaktura ${invoice.invoice_number}`
const { lines: clearingLines } = buildInvoicePaymentClearingLines(
{
amount: transaction.amount,
amount_sek: transaction.amount_sek ?? null,
currency: transaction.currency,
exchange_rate: transaction.exchange_rate ?? null,
},
{
currency: invoice.currency,
exchange_rate: invoice.exchange_rate ?? null,
remaining_amount: invoice.remaining_amount ?? null,
total: invoice.total,
paid_amount: invoice.paid_amount ?? null,
},
desc,
// Cross-currency: pass the spot-rate-converted invoice-currency
// amount so the helper credits 1510 proportionally and posts the
// FX-diff line. Same-currency: undefined, helper just uses bankSek.
fx.required ? fx.paidInInvoiceCurrency : undefined,
)
const journalEntry = await createJournalEntry(supabase, companyId!, user.id, {
fiscal_period_id: fiscalPeriodId,
entry_date: transaction.date,
description: desc,
source_type: 'invoice_paid',
source_id: invoice.id,
lines: clearingLines,
})
journalEntryId = journalEntry?.id ?? null
}
} catch (err) {
// AccountsNotInChart is fatal so the UI can open the activation dialog.
if (err instanceof AccountsNotInChartError) {
return errorResponse(err, txLog, { requestId })
}
txLog.error('failed to create payment journal entry', err as Error)
// Other errors are recorded but don't abort the match — the user can
// re-book the verifikation manually.
if (isBookkeepingError(err)) {
journalEntryError = getErrorMessage(err, { context: 'invoice' })
} else {
journalEntryError = err instanceof Error ? err.message : 'Unknown error'
}
}
// Underlag for the payment verifikation: re-attach the invoice PDF that
// was archived on send to the new payment journal entry. document_
// attachments.journal_entry_id is one-to-one, so we insert a parallel
// row pointing at the same storage_path. Same WORM file, second JE
// pointer — no copy, no schema change. Non-blocking (BFL 7 kap audit
// gap, but the bank line + invoice still exist as evidence).
if (journalEntryId && invoice.journal_entry_id) {
try {
const { data: invoiceDoc } = await supabase
.from('document_attachments')
.select('storage_path, file_name, file_size_bytes, mime_type, sha256_hash')
.eq('journal_entry_id', invoice.journal_entry_id)
.eq('company_id', companyId)
.eq('is_current_version', true)
.limit(1)
.maybeSingle()
if (invoiceDoc) {
// Destructure error: Supabase client returns { data, error } on
// postgres-level failures (unique constraint, RLS reject) instead
// of throwing, so the surrounding try/catch only covers thrown
// JS exceptions. Log via warn so attachment failures are visible
// in logs even though we don't abort the match.
const { error: attachErr } = await supabase.from('document_attachments').insert({
user_id: user.id,
company_id: companyId,
uploaded_by: user.id,
upload_source: 'system',
storage_path: invoiceDoc.storage_path,
file_name: invoiceDoc.file_name,
file_size_bytes: invoiceDoc.file_size_bytes,
mime_type: invoiceDoc.mime_type,
sha256_hash: invoiceDoc.sha256_hash,
journal_entry_id: journalEntryId,
})
if (attachErr) {
txLog.warn('failed to attach invoice PDF to payment journal entry', {
attachError: attachErr.message,
paymentJournalEntryId: journalEntryId,
invoiceJournalEntryId: invoice.journal_entry_id,
})
}
}
} catch (err) {
txLog.warn('failed to attach invoice PDF to payment journal entry', err as Error)
}
}
// Optimistic lock: only update if invoice is still in a matchable state.
const { data: updatedRows, error: updateInvError } = await supabase
.from('invoices')
.update({
status: newStatus,
paid_at: isFullyPaid ? now : null,
paid_amount: newPaidAmount,
remaining_amount: newRemaining,
})
.eq('id', invoice_id)
.in('status', ['sent', 'overdue', 'partially_paid'])
.select('id')
if (updateInvError) {
txLog.error('failed to update invoice status', updateInvError)
return errorResponse(updateInvError, txLog, { requestId })
}
if (!updatedRows || updatedRows.length === 0) {
return errorResponseFromCode('MATCH_INVOICE_ALREADY_PAID', txLog, { requestId })
}
// The "intäkt bokförs vid slutbetalning" note only applies to genuine
// kontantmetoden partials — invoices that were never booked. When the
// invoice was booked under accrual, the clearing entry already handles
// the partial cleanly and the note would be misleading.
const cashMethodNote = (!invoiceAlreadyBooked && accountingMethod === 'cash' && !isFullyPaid)
? 'Kontantmetoden: intäkt bokförs vid slutbetalning'
: null
// Provenance for a manually-supplied FX rate. The Riksbanken spot rate is
// self-documenting (rate + rate_date are reproducible), but a rate the
// user typed from their bank statement is an override of the ML 8 kap
// 21–23§ obligation and must leave a trail on the verifikat's payment row
// (BFL 5 kap 6–7§ — the verifikation must reflect the actual affärshändelse).
const manualRateNote =
fx.required && fx.source === 'manual'
? `Manuell valutakurs ${fx.rate} ${invoice.currency}/SEK (betalningsdatum ${transaction.date})`
: null
const paymentNotes = [cashMethodNote, manualRateNote].filter(Boolean).join(' · ') || null
// Payment row stores amount in INVOICE currency (the column unit). For
// same-currency that's tx.amount; for cross-currency it's the spot-rate
// conversion above. exchange_rate records the rate ACTUALLY USED for
// this payment — Riksbanken (or manual override) on tx.date — per
// ML 8 kap 21–23§. Falling back to invoice.exchange_rate would record
// the invoice-date rate, which is what the round-7/8 bot reviews
// explicitly flagged as wrong.
const { error: paymentInsertError } = await supabase
.from('invoice_payments')
.insert({
user_id: user.id,
company_id: companyId,
invoice_id,
payment_date: transaction.date,
amount: paidAmountInInvoiceCurrency,
currency: invoice.currency,
exchange_rate: fx.required ? fx.rate : invoice.exchange_rate,
journal_entry_id: journalEntryId,
transaction_id: transactionId,
notes: paymentNotes,
})
if (paymentInsertError) {
if (paymentInsertError.code === '23505') {
return errorResponseFromCode('MATCH_INVOICE_DUPLICATE_PAYMENT', txLog, { requestId })
}
txLog.error('failed to record invoice payment', paymentInsertError)
return errorResponseFromCode('MATCH_INVOICE_RECORD_PAYMENT_FAILED', txLog, { requestId })
}
const { error: updateTxError } = await supabase
.from('transactions')
.update({
invoice_id: invoice_id,
potential_invoice_id: null,
journal_entry_id: journalEntryId,
is_business: true,
category: 'income_services',
})
.eq('id', transactionId)
if (updateTxError) {
txLog.error('failed to link transaction to invoice', updateTxError)
return errorResponseFromCode('MATCH_INVOICE_LINK_TX_FAILED', txLog, { requestId })
}
logMatchEvent(supabase, user.id, transactionId, 'matched', {
invoiceId: invoice_id,
matchConfidence: 1.0,
matchMethod: 'manual_confirm',
// rate_source / exchange_rate live inside new_state (the persisted JSON
// column) so a manual override — a user-supplied money-path input — is
// distinguishable from an automatic Riksbanken lookup in the audit trail
// (swarm V16 / SOC 2 CC6.1 / GDPR Art.5(1)(f)). Same-currency matches
// carry rate_source: null.
newState: {
status: newStatus,
paid_amount: newPaidAmount,
remaining_amount: newRemaining,
rate_source: fx.required ? fx.source : null,
exchange_rate: fx.required ? fx.rate : null,
},
})
try {
eventBus.emit({
type: 'invoice.match_confirmed',
payload: {
invoice: invoice as Invoice,
transaction: transaction as Transaction,
userId: user.id,
companyId,
},
})
} catch (err) {
txLog.warn('invoice.match_confirmed event emission failed', err as Error)
}
if (journalEntryError) {
txLog.warn('match recorded but payment journal entry failed', {
errorCode: 'MATCH_INVOICE_PARTIAL',
message: journalEntryError,
})
}
return NextResponse.json({
success: true,
invoice_status: newStatus,
paid_at: isFullyPaid ? now : null,
paid_amount: newPaidAmount,
remaining_amount: newRemaining,
journal_entry_id: journalEntryId,
journal_entry_error: journalEntryError,
category: 'income_services',
})
},
{ requireWrite: true },
)