refactor: centralize provider projections

src/modules/investments/instruments/application/catalog-enrichment.service.ts

@@ -4,7 +4,6 @@ import { randomUUID } from 'node:crypto';
 import {
   decimalFromString,
   divide,
-  formatDecimal,
 } from '../../../../common/decimal';
 import { StructuredLogger } from '../../../../common/logging/structured-logger.service';
 import {
@@ -13,7 +12,6 @@ import {
 } from '../../../../common/time';
 import { type MoexBondEvent, MoexClient } from '../../../../integrations/moex/moex.api';
 import { NcrRatingsClient } from '../../../../integrations/ncr/ncr.api';
-import { decimal } from '../../../../integrations/tbank/decimal';
 import { isTbankErrorCode, TbankErrorCode } from '../../../../integrations/tbank/tbank-error-code';
 import {
   TbankAccessService,
@@ -37,6 +35,7 @@ import {
   catalogScope,
   type CatalogSource,
 } from '../infrastructure/catalog-discovery.repository';
+import { toSavedCandle } from '../infrastructure/tbank-candle.mapper';
 import { catalogSearchLimit } from './catalog-selection';
 import { previousClose, timestamp } from './instrument-market';
 
@@ -353,17 +352,7 @@ export class CatalogEnrichmentService {
           gap.from,
           gap.to,
         );
-        const rows = response.map((candle) => {
-          const time = timestamp(candle.time);
-          if (!time || !candle.close) {
-            throw new Error('Invalid candle response');
-          }
-          return {
-            time,
-            close: formatDecimal(decimal(candle.close)),
-            isComplete: candle.isComplete === true,
-          };
-        });
+        const rows = response.map(toSavedCandle);
         if (!(await this.candles.stage(attempt, gap, rows, now))) {
           throw new Error('Cancelled candle comparison');
         }