import { describe, expect, it } from 'bun:test';
import type {
  FinancialStatementPeriod,
  TaxonomyFactRow
} from '@/lib/types';
import { extractStructuredKpisFromDimensions } from './kpi-dimensions';

const PERIOD: FinancialStatementPeriod = {
  id: '2025-q4',
  filingId: 1,
  accessionNumber: '0000-1',
  filingDate: '2026-01-31',
  periodStart: '2025-10-01',
  periodEnd: '2025-12-31',
  filingType: '10-Q',
  periodLabel: 'Q4 2025'
};

const FACT: TaxonomyFactRow = {
  id: 10,
  snapshotId: 5,
  filingId: 1,
  filingDate: '2026-01-31',
  statement: 'income',
  roleUri: 'income',
  conceptKey: 'us-gaap:Revenues',
  qname: 'us-gaap:Revenues',
  namespaceUri: 'http://fasb.org/us-gaap/2024',
  localName: 'Revenues',
  value: 50000,
  contextId: 'ctx-1',
  unit: 'iso4217:USD',
  decimals: null,
  periodStart: '2025-10-01',
  periodEnd: '2025-12-31',
  periodInstant: null,
  dimensions: [{
    axis: 'srt:ProductOrServiceAxis',
    member: 'msft:CloudMember'
  }],
  isDimensionless: false,
  sourceFile: null
};

describe('dimension KPI extraction', () => {
  it('builds stable taxonomy KPI keys and provenance', () => {
    const rows = extractStructuredKpisFromDimensions({
      facts: [FACT],
      periods: [PERIOD],
      definitions: [{
        key: 'segment_revenue',
        label: 'Segment Revenue',
        category: 'segment_revenue',
        unit: 'currency',
        preferredConceptNames: ['Revenues']
      }]
    });

    expect(rows).toHaveLength(1);
    expect(rows[0]?.key).toBe('segment_revenue__srt_productorserviceaxis__msft_cloudmember');
    expect(rows[0]?.provenanceType).toBe('taxonomy');
    expect(rows[0]?.values['2025-q4']).toBe(50000);
    expect(rows[0]?.sourceFactIds).toEqual([10]);
  });
});