Jakob Wennberg
6f4573f380
- Add currency-utils module for SEK conversion with exchange rates - Refactor createJournalEntry to use draft+commit flow preventing voucher number gaps (BFL 5 kap. 7§) - Add foreign currency support to invoice entries with per-line SEK conversion - Centralize category-to-account mapping into single source of truth - Refactor invoice inbox to use shared document analyzer with document type classification (receipt, supplier invoice, government letter) - Update mapping engine, supplier invoice entries, and transaction entries - Fix report component rendering issues - Add new validation schemas and tests Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
63 lines
1.8 KiB
TypeScript
63 lines
1.8 KiB
TypeScript
/**
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* Currency conversion helpers for journal entry generators.
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*
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* All journal entry line amounts (debit_amount / credit_amount) must be in SEK.
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* These helpers resolve the correct SEK amount from the various currency fields
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* available on invoices, transactions, and supplier invoices.
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*/
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/**
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* Resolve the SEK amount for a journal entry line.
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*
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* Priority:
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* 1. If currency is SEK → return amount as-is
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* 2. If amountSek is populated → return it (pre-computed SEK value)
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* 3. If exchangeRate is available → compute amount * exchangeRate
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* 4. Fallback → return amount (legacy data safety — assumes SEK)
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*/
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export function resolveSekAmount(
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amount: number,
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amountSek: number | null | undefined,
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currency: string | null | undefined,
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exchangeRate: number | null | undefined
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): number {
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if (!currency || currency === 'SEK') {
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return amount
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}
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if (amountSek != null) {
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return Math.round(amountSek * 100) / 100
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}
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if (exchangeRate != null && exchangeRate > 0) {
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return Math.round(amount * exchangeRate * 100) / 100
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}
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// Fallback: legacy data without conversion info — return original amount
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return amount
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}
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/**
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* Build currency metadata fields for a journal entry line.
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* Returns an empty object for SEK transactions (no metadata needed).
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*/
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export function buildCurrencyMetadata(
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currency: string | null | undefined,
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amountInCurrency: number | null | undefined,
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exchangeRate: number | null | undefined
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): {
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currency?: string
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amount_in_currency?: number
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exchange_rate?: number
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} {
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if (!currency || currency === 'SEK') {
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return {}
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}
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return {
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...(currency ? { currency } : {}),
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...(amountInCurrency != null ? { amount_in_currency: amountInCurrency } : {}),
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...(exchangeRate != null && exchangeRate > 0 ? { exchange_rate: exchangeRate } : {}),
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}
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}
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