import { describe, expect, it } from 'bun:test';
import { __filingTaxonomyInternals } from './filing-taxonomy';

describe('filing taxonomy snapshot normalization', () => {
  it('normalizes legacy snake_case nested snapshot payloads in toSnapshotRecord', () => {
    const record = __filingTaxonomyInternals.toSnapshotRecord({
      id: 1,
      filing_id: 10,
      ticker: 'MSFT',
      filing_date: '2026-01-28',
      filing_type: '10-Q',
      parse_status: 'ready',
      parse_error: null,
      source: 'xbrl_instance',
      parser_engine: 'fiscal-xbrl',
      parser_version: '0.1.0',
      taxonomy_regime: 'us-gaap',
      fiscal_pack: 'core',
      periods: [{
        id: 'fy-2025',
        filing_id: 10,
        accession_number: '0001',
        filing_date: '2026-01-28',
        period_start: '2025-01-01',
        period_end: '2025-12-31',
        filing_type: '10-Q',
        period_label: 'FY 2025'
      }],
      faithful_rows: {
        income: [{
          key: 'revenue',
          label: 'Revenue',
          concept_key: 'us-gaap:Revenue',
          qname: 'us-gaap:Revenue',
          namespace_uri: 'http://fasb.org/us-gaap/2025',
          local_name: 'Revenue',
          is_extension: false,
          statement: 'income',
          role_uri: 'income',
          order: 10,
          depth: 0,
          parent_key: null,
          values: { 'fy-2025': 10 },
          units: { 'fy-2025': 'iso4217:USD' },
          has_dimensions: false,
          source_fact_ids: [1]
        }],
        balance: [],
        cash_flow: [],
        equity: [],
        comprehensive_income: []
      },
      statement_rows: null,
      surface_rows: {
        income: [{
          key: 'revenue',
          label: 'Revenue',
          category: 'revenue',
          template_section: 'revenue',
          order: 10,
          unit: 'currency',
          values: { 'fy-2025': 10 },
          source_concepts: ['us-gaap:Revenue'],
          source_row_keys: ['revenue'],
          source_fact_ids: [1],
          formula_key: null,
          has_dimensions: false,
          resolved_source_row_keys: { 'fy-2025': 'revenue' },
          statement: 'income',
          detail_count: 1,
          resolution_method: 'direct',
          confidence: 'high',
          warning_codes: ['legacy_surface']
        }],
        balance: [],
        cash_flow: [],
        equity: [],
        comprehensive_income: []
      },
      detail_rows: {
        income: {
          revenue: [{
            key: 'revenue_detail',
            parent_surface_key: 'revenue',
            label: 'Revenue Detail',
            concept_key: 'us-gaap:RevenueDetail',
            qname: 'us-gaap:RevenueDetail',
            namespace_uri: 'http://fasb.org/us-gaap/2025',
            local_name: 'RevenueDetail',
            unit: 'iso4217:USD',
            values: { 'fy-2025': 10 },
            source_fact_ids: [2],
            is_extension: false,
            dimensions_summary: ['region:americas'],
            residual_flag: false
          }]
        },
        balance: {},
        cash_flow: {},
        equity: {},
        comprehensive_income: {}
      },
      kpi_rows: [{
        key: 'cloud_growth',
        label: 'Cloud Growth',
        category: 'operating_kpi',
        unit: 'percent',
        order: 10,
        segment: null,
        axis: null,
        member: null,
        values: { 'fy-2025': 0.25 },
        source_concepts: ['msft:CloudGrowth'],
        source_fact_ids: [3],
        provenance_type: 'taxonomy',
        has_dimensions: false
      }],
      derived_metrics: null,
      validation_result: null,
      normalization_summary: {
        surface_row_count: 1,
        detail_row_count: 1,
        kpi_row_count: 1,
        unmapped_row_count: 0,
        material_unmapped_row_count: 0,
        warnings: ['legacy_warning']
      },
      facts_count: 3,
      concepts_count: 3,
      dimensions_count: 1,
      created_at: '2026-01-28T00:00:00.000Z',
      updated_at: '2026-01-28T00:00:00.000Z'
    } as never);

    expect(record.periods[0]).toMatchObject({
      filingId: 10,
      accessionNumber: '0001',
      filingDate: '2026-01-28',
      periodStart: '2025-01-01',
      periodEnd: '2025-12-31',
      periodLabel: 'FY 2025'
    });
    expect(record.faithful_rows.income[0]).toMatchObject({
      conceptKey: 'us-gaap:Revenue',
      namespaceUri: 'http://fasb.org/us-gaap/2025',
      localName: 'Revenue',
      roleUri: 'income',
      parentKey: null,
      hasDimensions: false,
      sourceFactIds: [1]
    });
    expect(record.surface_rows.income[0]).toMatchObject({
      templateSection: 'revenue',
      sourceConcepts: ['us-gaap:Revenue'],
      sourceRowKeys: ['revenue'],
      sourceFactIds: [1],
      formulaKey: null,
      hasDimensions: false,
      resolvedSourceRowKeys: { 'fy-2025': 'revenue' },
      detailCount: 1,
      resolutionMethod: 'direct',
      warningCodes: ['legacy_surface']
    });
    expect(record.detail_rows.income.revenue?.[0]).toMatchObject({
      parentSurfaceKey: 'revenue',
      conceptKey: 'us-gaap:RevenueDetail',
      namespaceUri: 'http://fasb.org/us-gaap/2025',
      sourceFactIds: [2],
      dimensionsSummary: ['region:americas'],
      residualFlag: false
    });
    expect(record.kpi_rows[0]).toMatchObject({
      sourceConcepts: ['msft:CloudGrowth'],
      sourceFactIds: [3],
      provenanceType: 'taxonomy',
      hasDimensions: false
    });
    expect(record.normalization_summary).toEqual({
      surfaceRowCount: 1,
      detailRowCount: 1,
      kpiRowCount: 1,
      unmappedRowCount: 0,
      materialUnmappedRowCount: 0,
      warnings: ['legacy_warning']
    });
  });

  it('keeps mixed camelCase and snake_case payloads compatible', () => {
    const normalized = __filingTaxonomyInternals.normalizeFilingTaxonomySnapshotPayload({
      periods: [{
        id: 'fy-2025',
        filingId: 10,
        accessionNumber: '0001',
        filingDate: '2026-01-28',
        periodStart: '2025-01-01',
        periodEnd: '2025-12-31',
        filingType: '10-K',
        periodLabel: 'FY 2025'
      }],
      faithful_rows: {
        income: [{
          key: 'revenue',
          label: 'Revenue',
          conceptKey: 'us-gaap:Revenue',
          qname: 'us-gaap:Revenue',
          namespaceUri: 'http://fasb.org/us-gaap/2025',
          localName: 'Revenue',
          isExtension: false,
          statement: 'income',
          roleUri: 'income',
          order: 10,
          depth: 0,
          parentKey: null,
          values: { 'fy-2025': 10 },
          units: { 'fy-2025': 'iso4217:USD' },
          hasDimensions: false,
          sourceFactIds: [1]
        }],
        balance: [],
        cash_flow: [],
        equity: [],
        comprehensive_income: []
      },
      statement_rows: null,
      surface_rows: {
        income: [{
          key: 'revenue',
          label: 'Revenue',
          category: 'revenue',
          order: 10,
          unit: 'currency',
          values: { 'fy-2025': 10 },
          source_concepts: ['us-gaap:Revenue'],
          source_row_keys: ['revenue'],
          source_fact_ids: [1],
          formula_key: null,
          has_dimensions: false,
          resolved_source_row_keys: { 'fy-2025': 'revenue' }
        }],
        balance: [],
        cash_flow: [],
        equity: [],
        comprehensive_income: []
      },
      detail_rows: {
        income: {
          revenue: [{
            key: 'revenue_detail',
            parentSurfaceKey: 'revenue',
            label: 'Revenue Detail',
            conceptKey: 'us-gaap:RevenueDetail',
            qname: 'us-gaap:RevenueDetail',
            namespaceUri: 'http://fasb.org/us-gaap/2025',
            localName: 'RevenueDetail',
            unit: 'iso4217:USD',
            values: { 'fy-2025': 10 },
            sourceFactIds: [2],
            isExtension: false,
            dimensionsSummary: [],
            residualFlag: false
          }]
        },
        balance: {},
        cash_flow: {},
        equity: {},
        comprehensive_income: {}
      },
      kpi_rows: [],
      normalization_summary: {
        surfaceRowCount: 1,
        detail_row_count: 1,
        kpiRowCount: 0,
        unmapped_row_count: 0,
        materialUnmappedRowCount: 0,
        warnings: []
      }
    });

    expect(normalized.periods[0]?.filingId).toBe(10);
    expect(normalized.surface_rows.income[0]?.sourceConcepts).toEqual(['us-gaap:Revenue']);
    expect(normalized.detail_rows.income.revenue?.[0]?.parentSurfaceKey).toBe('revenue');
    expect(normalized.normalization_summary).toEqual({
      surfaceRowCount: 1,
      detailRowCount: 1,
      kpiRowCount: 0,
      unmappedRowCount: 0,
      materialUnmappedRowCount: 0,
      warnings: []
    });
  });
});