refactor!: support RUB only (WealthLedger/main#55) (#204)

BREAKING CHANGE: per-currency API fields replaced with single RUB Money.

src/modules/investments/income/income-analytics.service.ts

@@ -18,11 +18,11 @@ import {
 import {
   IncomeAnalyticsEntryDto,
   IncomeAnalyticsResourceDto,
-  IncomeCurrencySummaryDto,
   IncomeDependencyDto,
   IncomeInstrumentDto,
   IncomeSummaryDto,
   IncomeSummaryResourceDto,
+  IncomeTotalDto,
 } from './income-analytics.dto';
 import {
   IncomeBucketGranularity,
@@ -105,7 +105,7 @@ export class IncomeAnalyticsService {
     assert(current.meta.lastSuccessfulAt);
     const selected = qualifying(current.items).map((entry) => ({
       ...entry,
-      instrumentKey: `${instrumentKey(entry)}:${entry.payment?.currency ?? ''}`,
+      instrumentKey: instrumentKey(entry),
     }));
     return {
       data: {
@@ -139,23 +139,19 @@ function summaryResponse(
   entries: BrokerageOperationDto[],
   calculatedAt: string,
 ): IncomeSummaryDto {
-  return { accountId, period, totalsByCurrency: totals(entries), calculatedAt };
+  return { accountId, period, total: totals(entries), calculatedAt };
 }
 
-function totals(entries: BrokerageOperationDto[]): IncomeCurrencySummaryDto[] {
-  const values = new Map<string, Total>();
+function totals(entries: BrokerageOperationDto[]): IncomeTotalDto {
+  const total = zeroTotal();
   for (const entry of entries) {
     if (!entry.payment) continue;
-    const total = values.get(entry.payment.currency) ?? zeroTotal();
     const value = decimalFromString(entry.payment.value);
     if (isTbankProtocolValue(entry.type, TbankOperationType.Coupon)) {
       total.coupon = add(total.coupon, value);
     } else total.dividend = add(total.dividend, value);
-    values.set(entry.payment.currency, total);
   }
-  return [...values]
-    .sort(([left], [right]) => left.localeCompare(right))
-    .map(([currency, total]) => presentTotal(currency, total));
+  return presentTotal(total);
 }
 
 function buckets(
@@ -169,7 +165,7 @@ function buckets(
   }));
   return rangeBuckets(range, granularity).map((period) => ({
     period,
-    totalsByCurrency: totals(
+    total: totals(
       datedEntries
         .filter(({ date }) => date >= period.from && date <= period.to)
         .map(({ entry }) => entry),
@@ -189,7 +185,7 @@ function instruments(
   return [...groups]
     .map(([key, group]) => {
       const first = group[0];
-      const [total] = totals(group);
+      const total = totals(group);
       return {
         key,
         figi: first.figi,
@@ -225,15 +221,10 @@ function zeroTotal(): Total {
   return { coupon: { value: 0n, scale: 0 }, dividend: { value: 0n, scale: 0 } };
 }
 
-function presentTotal(
-  currency: string,
-  value: Total,
-): IncomeCurrencySummaryDto {
-  const total = add(value.coupon, value.dividend);
+function presentTotal(value: Total): IncomeTotalDto {
   return {
-    currency,
-    coupon: { currency, value: formatDecimal(value.coupon) },
-    dividend: { currency, value: formatDecimal(value.dividend) },
-    total: { currency, value: formatDecimal(total) },
+    coupon: { currency: 'RUB', value: formatDecimal(value.coupon) },
+    dividend: { currency: 'RUB', value: formatDecimal(value.dividend) },
+    total: { currency: 'RUB', value: formatDecimal(add(value.coupon, value.dividend)) },
   };
 }