refactor: organize backend by business responsibility

2026-09-13 13:52:57 +03:00
parent 7fde3ece6e
commit 8ba005346d
145 changed files with 3027 additions and 2346 deletions
@@ -0,0 +1,80 @@
+import { Injectable, ServiceUnavailableException } from '@nestjs/common';
+import { isZero } from '../../../common/decimal';
+import {
+  TbankAccessService,
+  TbankClient,
+} from '../../../integrations/tbank/tbank.api';
+import { decimal } from '../../../integrations/tbank/decimal';
+import { totalsByCurrency } from '../portfolio/portfolio.api';
+import { BrokerageAccountDto } from './brokerage-account.dto';
+
+@Injectable()
+export class BrokerageAccountsService {
+  constructor(
+    private readonly access: TbankAccessService,
+    private readonly tbank: TbankClient,
+  ) {}
+
+  async list(userId: string): Promise<BrokerageAccountDto[]> {
+    return this.access.withSupportedAccounts(
+      userId,
+      async ({ token, accounts }) =>
+        Promise.all(
+          accounts.map(async (account) => {
+            const [portfolioResult, positionsResult] = await Promise.allSettled(
+              [
+                this.tbank.getPortfolio(token, account.id),
+                this.tbank.getPositions(token, account.id),
+              ],
+            );
+            if (
+              portfolioResult.status === 'rejected' &&
+              !isTbankUnavailable(portfolioResult.reason)
+            )
+              throw portfolioResult.reason;
+            if (
+              positionsResult.status === 'rejected' &&
+              !isTbankUnavailable(positionsResult.reason)
+            )
+              throw positionsResult.reason;
+            if (
+              portfolioResult.status === 'rejected' ||
+              positionsResult.status === 'rejected'
+            )
+              return { ...account, portfolioSummary: null };
+            const positions = portfolioResult.value.positions ?? [];
+            let stockPositionCount = 0;
+            let bondPositionCount = 0;
+            for (const position of positions) {
+              if (isZero(decimal(position.quantity ?? {}))) continue;
+              const type = position.instrumentType?.toLowerCase();
+              if (type === 'share') stockPositionCount += 1;
+              if (type === 'bond') bondPositionCount += 1;
+            }
+            return {
+              ...account,
+              portfolioSummary: {
+                totalsByCurrency: totalsByCurrency(
+                  positions,
+                  positionsResult.value.money ?? [],
+                ),
+                stockPositionCount,
+                bondPositionCount,
+              },
+            };
+          }),
+        ),
+    );
+  }
+}
+
+function isTbankUnavailable(error: unknown): boolean {
+  if (!(error instanceof ServiceUnavailableException)) return false;
+  const response = error.getResponse();
+  return (
+    typeof response === 'object' &&
+    response !== null &&
+    'code' in response &&
+    response.code === 'TBANK_UNAVAILABLE'
+  );
+}