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

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

src/modules/investments/portfolio/application/portfolio.service.spec.ts

@@ -145,19 +145,15 @@ describe('persistent portfolio projection', () => {
       ]),
     ).toEqual([
       ['Known', 'STOCK', '2'],
-      ['B', 'OTHER', '-0.5'],
     ]);
     expect(snapshot.positions[0].absoluteReturn).toEqual({
       currency: 'RUB',
       value: '2.000000002',
     });
-    expect(snapshot.totalsByCurrency).toEqual([
-      { currency: 'RUB', value: '7.000000002' },
-      { currency: 'USD', value: '-2' },
-    ]);
-    expect(snapshot.cashBalances).toEqual([{ currency: 'RUB', value: '1' }]);
+    expect(snapshot.totals).toEqual({ currency: 'RUB', value: '7.000000002' });
+    expect(snapshot.cash).toEqual({ currency: 'RUB', value: '1' });
   });
-  it('keeps net-zero cash groups, missing valuations and incompatible currencies distinct', async () => {
+  it('filters non-RUB cash and positions out of the RUB-only snapshot', async () => {
     repository.reserve.mockResolvedValueOnce({
       launch: true,
       work: { id: 'work', attemptId: 'attempt' },
@@ -180,17 +176,10 @@ describe('persistent portfolio projection', () => {
     assert(handle);
     await handle.done;
     const snapshot = (repository.publish.mock.calls as [unknown, string, PortfolioDto][])[0][2];
-    expect(snapshot.cashBalances).toEqual([
-      { currency: 'RUB', value: '0' },
-      { currency: 'EUR', value: '1' },
-    ]);
-    expect(snapshot.totalsByCurrency).toEqual([
-      { currency: 'EUR', value: '1' },
-      { currency: 'USD', value: '3' },
-    ]);
+    expect(snapshot.cash).toEqual({ currency: 'RUB', value: '0' });
+    expect(snapshot.totals).toEqual({ currency: 'RUB', value: '0' });
     expect(snapshot.positions[0].currentValue).toBeNull();
-    expect(snapshot.positions[1].absoluteReturn).toBeNull();
-    expect(snapshot.positions[1].averagePurchasePrice).toEqual({ currency: 'RUB', value: '2' });
+    expect(snapshot.positions).toHaveLength(1);
   });
 
   it('counts cash once when T-Bank also returns it as a CURRENCY position', async () => {
@@ -213,9 +202,9 @@ describe('persistent portfolio projection', () => {
     assert(handle);
     await handle.done;
     const snapshot = (repository.publish.mock.calls as [unknown, string, PortfolioDto][])[0][2];
-    expect(snapshot.totalsByCurrency).toEqual([{ currency: 'RUB', value: '121.49' }]);
-    expect(snapshot.positions.map((position) => position.type)).toEqual(['FUND', 'CURRENCY']);
-    expect(snapshot.structure.currencies[0].totalValue).toBe('121.49');
+    expect(snapshot.totals).toEqual({ currency: 'RUB', value: '121.49' });
+    expect(snapshot.positions.map((position) => position.type)).toEqual(['FUND']);
+    expect(snapshot.structure.totalValue).toBe('121.49');
   });
 
   // Test intent: a corrupted Json payload must fail loudly instead of being spread into the API response.
@@ -235,9 +224,9 @@ describe('persistent portfolio projection', () => {
       lastSuccessfulAt: membershipAt.toISOString(),
       isStale: false,
       positions: [],
-      cashBalances: [],
-      structure: { currencies: [], unvaluedCategories: [] },
-      totalsByCurrency: [{ currency: 'RUB', value: '1.000000001' }],
+      cash: { currency: 'RUB', value: '0' },
+      structure: { totalValue: '1.000000001', hasNegativeValues: false, categories: [], unvaluedCategories: [] },
+      totals: { currency: 'RUB', value: '1.000000001' },
     };
     const account = {
       accountId: 'a',
@@ -261,8 +250,8 @@ describe('persistent portfolio projection', () => {
     expect(partial.meta.availability).toBe('temporarily-unavailable');
     expect(partial.meta.completeness).toBe('incomplete');
     const saved = await service.saved('user', 'all');
-    expect(saved.accounts[0].snapshot?.totalsByCurrency).toEqual(
-      snapshot.totalsByCurrency,
+    expect(saved.accounts[0].snapshot?.totals).toEqual(
+      snapshot.totals,
     );
     expect(saved.accounts[1].snapshot).toBeNull();
     repository.read.mockResolvedValue({
@@ -279,9 +268,9 @@ describe('persistent portfolio projection', () => {
       work: [],
     });
     const complete = await service.read('user', 'all');
-    expect(complete.data?.totalsByCurrency).toEqual([
-      { currency: 'RUB', value: '2.000000002' },
-    ]);
+    expect(complete.data?.totals).toEqual({
+      currency: 'RUB', value: '2.000000002',
+    });
     expect(complete.data?.lastSuccessfulAt).toBe(new Date(0).toISOString());
     expect(complete.data?.isStale).toBe(true);
     expect(tbank.getPortfolio).not.toHaveBeenCalled();