import { describe, expect, it } from 'bun:test';
import { __financialStatementsInternals } from './financial-statements';
import type { FilingStatementSnapshotRecord } from '@/lib/server/repos/filing-statements';

function sampleSnapshot(): FilingStatementSnapshotRecord {
  return {
    id: 10,
    filing_id: 44,
    ticker: 'MSFT',
    filing_date: '2025-12-31',
    filing_type: '10-K',
    period_end: '2025-12-31',
    statement_bundle: {
      periods: [
        {
          id: '2025-12-31-0001',
          filingId: 44,
          accessionNumber: '0001',
          filingDate: '2025-12-31',
          periodEnd: '2025-12-31',
          filingType: '10-K',
          periodLabel: 'Fiscal Year End'
        }
      ],
      statements: {
        income: [
          {
            key: 'revenue-line',
            label: 'Revenue',
            concept: 'us-gaap:Revenues',
            order: 1,
            depth: 0,
            isSubtotal: false,
            values: { '2025-12-31-0001': 120_000 }
          }
        ],
        balance: [],
        cash_flow: [],
        equity: [],
        comprehensive_income: []
      }
    },
    standardized_bundle: {
      periods: [
        {
          id: '2025-12-31-0001',
          filingId: 44,
          accessionNumber: '0001',
          filingDate: '2025-12-31',
          periodEnd: '2025-12-31',
          filingType: '10-K',
          periodLabel: 'Fiscal Year End'
        }
      ],
      statements: {
        income: [
          {
            key: 'revenue',
            label: 'Revenue',
            concept: 'us-gaap:Revenues',
            category: 'core',
            sourceConcepts: ['us-gaap:Revenues'],
            values: { '2025-12-31-0001': 120_000 }
          }
        ],
        balance: [],
        cash_flow: [],
        equity: [],
        comprehensive_income: []
      }
    },
    dimension_bundle: {
      statements: {
        income: [
          {
            rowKey: 'revenue-line',
            concept: 'us-gaap:Revenues',
            periodId: '2025-12-31-0001',
            axis: 'srt:StatementBusinessSegmentsAxis',
            member: 'acme:CloudMember',
            value: 55_000,
            unit: 'USD'
          }
        ],
        balance: [],
        cash_flow: [],
        equity: [],
        comprehensive_income: []
      }
    },
    parse_status: 'ready',
    parse_error: null,
    source: 'sec_filing_summary',
    created_at: '2026-01-01T00:00:00.000Z',
    updated_at: '2026-01-01T00:00:00.000Z'
  };
}

describe('financial statements service internals', () => {
  it('builds sorted periods for selected mode/statement', () => {
    const snapshot = sampleSnapshot();

    const periods = __financialStatementsInternals.buildPeriods(
      [snapshot],
      'standardized',
      'income'
    );

    expect(periods.length).toBe(1);
    expect(periods[0]?.id).toBe('2025-12-31-0001');
  });

  it('builds standardized rows and includes dimensions when requested', () => {
    const snapshot = sampleSnapshot();
    const periods = __financialStatementsInternals.buildPeriods(
      [snapshot],
      'standardized',
      'income'
    );

    const result = __financialStatementsInternals.buildRows(
      [snapshot],
      periods,
      'standardized',
      'income',
      true
    );

    expect(result.rows.length).toBe(1);
    expect(result.rows[0]?.hasDimensions).toBe(true);
    expect(result.dimensions).not.toBeNull();
    expect(result.dimensions?.['revenue-line']?.length).toBe(1);
  });

  it('returns default sync limits by window', () => {
    expect(__financialStatementsInternals.defaultFinancialSyncLimit('10y')).toBe(60);
    expect(__financialStatementsInternals.defaultFinancialSyncLimit('all')).toBe(120);
  });
});