import { describe, expect, it } from 'bun:test';
import { __secCompanyProfileInternals, deriveValuationSnapshot } from './sec-company-profile';

describe('sec company profile helpers', () => {
  it('formats fiscal year end values', () => {
    expect(__secCompanyProfileInternals.formatFiscalYearEnd('0630')).toBe('06/30');
    expect(__secCompanyProfileInternals.formatFiscalYearEnd('1231')).toBe('12/31');
    expect(__secCompanyProfileInternals.formatFiscalYearEnd('')).toBeNull();
  });

  it('picks the latest numeric fact across supported namespaces', () => {
    const payload = {
      facts: {
        dei: {
          EntityCommonStockSharesOutstanding: {
            units: {
              shares: [
                { val: 7_400_000_000, filed: '2025-10-31' },
                { val: 7_500_000_000, filed: '2026-01-31' }
              ]
            }
          }
        }
      }
    };

    expect(
      __secCompanyProfileInternals.pickLatestNumericFact(
        payload,
        ['dei'],
        ['EntityCommonStockSharesOutstanding']
      )
    ).toBe(7_500_000_000);
  });

  it('derives valuation metrics from free inputs only', () => {
    const snapshot = deriveValuationSnapshot({
      quote: 200,
      sharesOutstanding: 1_000_000,
      revenue: 50_000_000,
      cash: 5_000_000,
      debt: 15_000_000,
      netIncome: 10_000_000
    });

    expect(snapshot.marketCap).toBe(200_000_000);
    expect(snapshot.enterpriseValue).toBe(210_000_000);
    expect(snapshot.evToRevenue).toBe(4.2);
    expect(snapshot.trailingPe).toBe(20);
    expect(snapshot.source).toBe('derived');
  });

  it('marks valuation as unavailable when core inputs are missing', () => {
    const snapshot = deriveValuationSnapshot({
      quote: null,
      sharesOutstanding: null,
      revenue: null,
      cash: null,
      debt: null,
      netIncome: null
    });

    expect(snapshot.marketCap).toBeNull();
    expect(snapshot.enterpriseValue).toBeNull();
    expect(snapshot.source).toBe('unavailable');
  });
});