money: tag interest/dividend payouts on bank sync and Revolut import (category interest|dividend, never overwrites a set category)

src/lib/server/bank-sync.ts

@@ -11,6 +11,7 @@ import type {
 	SessionResponse
 } from './enable-banking';
 import { EnableBankingError } from './enable-banking';
+import { investmentIncomeCategory } from './investment-income';
 import { findSumMatch } from './reconcile';
 
 export type MappedTransaction = {
@@ -21,6 +22,8 @@ export type MappedTransaction = {
 	counterparty: string | null;
 	amountCents: number;
 	bookingStatus: string;
+	/** 'interest' / 'dividend' for investment income payouts, else null. */
+	category: string | null;
 	raw: BankTransaction;
 };
 
@@ -79,6 +82,17 @@ export function mapBankTransaction(tx: BankTransaction): MappedTransaction | nul
 		counterparty,
 		amountCents,
 		bookingStatus: tx.status ?? 'BOOK',
+		category: investmentIncomeCategory({
+			amountCents,
+			kind: tx.bank_transaction_code?.code,
+			texts: [
+				description,
+				...remittance,
+				tx.bank_transaction_code?.description,
+				tx.bank_transaction_code?.sub_code,
+				tx.note
+			]
+		}),
 		raw: tx
 	};
 }
@@ -435,10 +449,11 @@ export async function syncBankAccounts(
 					for (const { row } of absorbed)
 						await q`delete from money.transactions where id = ${row.id} and external_id is null`;
 					for (const { id, tx } of updates) {
-						// Keep Stan's own description/category; attach the bank identity.
+						// Keep Stan's own description/category (only fill an empty one); attach the bank identity.
 						await q`
 							update money.transactions set external_id = ${tx.externalId},
 								counterparty = coalesce(counterparty, ${tx.counterparty}),
+								category = coalesce(category, ${tx.category}),
 								booking_status = ${tx.bookingStatus}, value_date = ${tx.valueDate},
 								raw = ${q.json(tx.raw as never)}
 							where id = ${id} and external_id is null`;
@@ -447,10 +462,10 @@ export async function syncBankAccounts(
 						await q`
 							insert into money.transactions
 								(user_id, account_id, date, description, amount_cents, external_id, source,
-								 booking_status, counterparty, raw, value_date)
+								 booking_status, counterparty, category, raw, value_date)
 							values (${account.user_id}, ${account.id}, ${tx.date}, ${tx.description},
 								${tx.amountCents}, ${tx.externalId}, 'enablebanking', ${tx.bookingStatus},
-								${tx.counterparty}, ${q.json(tx.raw as never)}, ${tx.valueDate})
+								${tx.counterparty}, ${tx.category}, ${q.json(tx.raw as never)}, ${tx.valueDate})
 							on conflict (account_id, external_id) do nothing`;
 					}
 				});