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 +1,94 @@
+import { Injectable } from '@nestjs/common';
+import type { TbankFundamentals } from '../../../../../integrations/tbank/tbank.api';
+import { TbankClient } from '../../../../../integrations/tbank/tbank.api';
+import { optional } from '../../application/instrument-market';
+import { StockCompanyDto, StockMetricDto } from '../presentation/stock.dto';
+
+import { StockCatalogService } from './stock-catalog.service';
+@Injectable()
+export class GetStockCompanyUseCase {
+  constructor(
+    private readonly catalog: StockCatalogService,
+    private readonly tbank: TbankClient,
+  ) {}
+  execute(userId: string, uid: string): Promise<StockCompanyDto> {
+    return this.catalog.cached(userId, `company:${uid}`, async (token) => {
+      const share = await this.catalog.share(token, uid);
+      const unavailable: string[] = [];
+      const assetUid = share.assetUid;
+      if (!assetUid)
+        return {
+          description: null,
+          metrics: [],
+          unavailable,
+          observedAt: new Date().toISOString(),
+        };
+      const [description, fundamentals] = await Promise.all([
+        optional(
+          () => this.tbank.getAssetDescription(token, assetUid),
+          'description',
+          unavailable,
+        ),
+        optional(
+          () => this.tbank.getFundamentals(token, assetUid),
+          'fundamentals',
+          unavailable,
+        ),
+      ]);
+      return {
+        description,
+        metrics: metrics(fundamentals, share.sector),
+        unavailable,
+        observedAt: new Date().toISOString(),
+      };
+    });
+  }
+}
+function metrics(
+  values: TbankFundamentals | null,
+  sector?: string,
+): StockMetricDto[] {
+  if (!values) return [];
+  const bank = sector?.toLowerCase() === 'financial';
+  const selection: [
+    keyof TbankFundamentals,
+    StockMetricDto['unit'],
+    StockMetricDto['period'],
+  ][] = [
+    ['marketCapitalization', 'money', null],
+    ['peRatioTtm', 'ratio', 'TTM'],
+    ...(bank
+      ? ([
+          ['priceToBookTtm', 'ratio', 'TTM'],
+          ['roe', 'percent', null],
+        ] as typeof selection)
+      : ([
+          ['revenueTtm', 'money', 'TTM'],
+          ['ebitdaTtm', 'money', 'TTM'],
+        ] as typeof selection)),
+    ['netIncomeTtm', 'money', 'TTM'],
+    ...(!bank
+      ? ([
+          ['totalDebtMrq', 'money', 'MRQ'],
+          ['netDebtToEbitda', 'ratio', null],
+        ] as typeof selection)
+      : []),
+  ];
+  return selection.flatMap(([key, unit, period]) => {
+    const value = values[key];
+    const currency = values.currency?.toUpperCase() || null;
+    return typeof value === 'number' &&
+      Number.isFinite(value) &&
+      (unit !== 'money' || currency)
+      ? [
+          {
+            key,
+            value,
+            unit,
+            period,
+            currency: unit === 'money' ? currency : null,
+          },
+        ]
+      : [];
+  });
+}