import { describe, expect, it, mock } from 'bun:test';
import type {
  CompanyAnalysis,
  Filing,
  ResearchMemo
} from '@/lib/types';
import {
  __companyAnalysisInternals,
  getCompanyAnalysisPayload
} from './company-analysis';

function buildFiling(updatedAt = '2026-03-10T00:00:00.000Z'): Filing {
  return {
    id: 1,
    ticker: 'MSFT',
    filing_type: '10-K',
    filing_date: '2026-02-01',
    accession_number: '0000000000-26-000001',
    cik: '0000789019',
    company_name: 'Microsoft Corporation',
    filing_url: 'https://www.sec.gov/Archives/test.htm',
    submission_url: 'https://www.sec.gov/submissions/test.json',
    primary_document: 'test.htm',
    metrics: null,
    analysis: null,
    created_at: updatedAt,
    updated_at: updatedAt
  };
}

function buildMemo(updatedAt = '2026-03-10T00:00:00.000Z', thesis = 'Azure remains durable.'): ResearchMemo {
  return {
    id: 1,
    user_id: 'user-1',
    organization_id: null,
    ticker: 'MSFT',
    rating: 'buy',
    conviction: 'high',
    time_horizon_months: 24,
    packet_title: null,
    packet_subtitle: null,
    thesis_markdown: thesis,
    variant_view_markdown: '',
    catalysts_markdown: '',
    risks_markdown: '',
    disconfirming_evidence_markdown: '',
    next_actions_markdown: '',
    created_at: updatedAt,
    updated_at: updatedAt
  };
}

function buildLocalInputs(overrides: Partial<Parameters<typeof __companyAnalysisInternals.buildCompanyAnalysisSourceSignature>[0]['localInputs']> = {}) {
  return {
    filings: [buildFiling()],
    holding: null,
    watchlistItem: null,
    journalPreview: [],
    memo: null,
    ...overrides
  };
}

function buildAnalysisPayload(companyName: string): CompanyAnalysis {
  return {
    company: {
      ticker: 'MSFT',
      companyName,
      sector: null,
      category: null,
      tags: [],
      cik: null
    },
    quote: { value: 100, stale: false },
    position: null,
    priceHistory: { value: [], stale: false },
    benchmarkHistory: { value: [], stale: false },
    financials: [],
    filings: [],
    aiReports: [],
    coverage: null,
    journalPreview: [],
    recentAiReports: [],
    latestFilingSummary: null,
    keyMetrics: {
      referenceDate: null,
      revenue: null,
      netIncome: null,
      totalAssets: null,
      cash: null,
      debt: null,
      netMargin: null
    },
    companyProfile: {
      description: null,
      exchange: null,
      industry: null,
      country: null,
      website: null,
      fiscalYearEnd: null,
      employeeCount: null,
      source: 'unavailable'
    },
    valuationSnapshot: {
      sharesOutstanding: null,
      marketCap: null,
      enterpriseValue: null,
      trailingPe: null,
      evToRevenue: null,
      evToEbitda: null,
      source: 'unavailable'
    },
    bullBear: {
      source: 'unavailable',
      bull: [],
      bear: [],
      updatedAt: null
    },
    recentDevelopments: {
      status: 'unavailable',
      items: [],
      weeklySnapshot: null
    }
  };
}

function buildCacheRecord(payload: CompanyAnalysis, sourceSignature: string) {
  return {
    id: 1,
    user_id: 'user-1',
    ticker: 'MSFT',
    cache_version: 1,
    source_signature: sourceSignature,
    payload,
    created_at: '2026-03-13T11:55:00.000Z',
    updated_at: '2026-03-13T11:55:00.000Z'
  };
}

describe('company analysis cache orchestration', () => {
  it('changes the source signature when local inputs change', () => {
    const base = __companyAnalysisInternals.buildCompanyAnalysisSourceSignature({
      ticker: 'MSFT',
      localInputs: buildLocalInputs()
    });
    const memoChanged = __companyAnalysisInternals.buildCompanyAnalysisSourceSignature({
      ticker: 'MSFT',
      localInputs: buildLocalInputs({ memo: buildMemo('2026-03-11T00:00:00.000Z') })
    });
    const filingChanged = __companyAnalysisInternals.buildCompanyAnalysisSourceSignature({
      ticker: 'MSFT',
      localInputs: buildLocalInputs({ filings: [buildFiling('2026-03-11T00:00:00.000Z')] })
    });
    const journalChanged = __companyAnalysisInternals.buildCompanyAnalysisSourceSignature({
      ticker: 'MSFT',
      localInputs: buildLocalInputs({
        journalPreview: [{
          id: 7,
          user_id: 'user-1',
          ticker: 'MSFT',
          accession_number: null,
          entry_type: 'note',
          title: 'Updated note',
          body_markdown: 'Body',
          metadata: null,
          created_at: '2026-03-01T00:00:00.000Z',
          updated_at: '2026-03-11T00:00:00.000Z'
        }]
      })
    });

    expect(memoChanged).not.toBe(base);
    expect(filingChanged).not.toBe(base);
    expect(journalChanged).not.toBe(base);
  });

  it('returns a fresh cached payload when signature and ttl match', async () => {
    const localInputs = buildLocalInputs();
    const sourceSignature = __companyAnalysisInternals.buildCompanyAnalysisSourceSignature({
      ticker: 'MSFT',
      localInputs
    });
    const buildOverview = mock(async () => buildAnalysisPayload('Built Corp'));
    const upsertCachedOverview = mock(async () => buildCacheRecord(buildAnalysisPayload('Cached Corp'), sourceSignature));

    const analysis = await getCompanyAnalysisPayload({
      userId: 'user-1',
      ticker: 'MSFT',
      now: new Date('2026-03-13T12:00:00.000Z')
    }, {
      getLocalInputs: async () => localInputs,
      getCachedOverview: async () => buildCacheRecord(buildAnalysisPayload('Cached Corp'), sourceSignature),
      buildOverview,
      upsertCachedOverview
    });

    expect(analysis.company.companyName).toBe('Cached Corp');
    expect(buildOverview).not.toHaveBeenCalled();
    expect(upsertCachedOverview).not.toHaveBeenCalled();
  });

  it('bypasses the cache when refresh is requested', async () => {
    const localInputs = buildLocalInputs();
    const sourceSignature = __companyAnalysisInternals.buildCompanyAnalysisSourceSignature({
      ticker: 'MSFT',
      localInputs
    });
    const buildOverview = mock(async () => buildAnalysisPayload('Refreshed Corp'));
    const upsertCachedOverview = mock(async () => buildCacheRecord(buildAnalysisPayload('Refreshed Corp'), sourceSignature));

    const analysis = await getCompanyAnalysisPayload({
      userId: 'user-1',
      ticker: 'MSFT',
      refresh: true,
      now: new Date('2026-03-13T12:00:00.000Z')
    }, {
      getLocalInputs: async () => localInputs,
      getCachedOverview: async () => buildCacheRecord(buildAnalysisPayload('Cached Corp'), sourceSignature),
      buildOverview,
      upsertCachedOverview
    });

    expect(analysis.company.companyName).toBe('Refreshed Corp');
    expect(buildOverview).toHaveBeenCalledTimes(1);
    expect(upsertCachedOverview).toHaveBeenCalledTimes(1);
  });

  it('rebuilds when local inputs invalidate the cached signature', async () => {
    const cachedInputs = buildLocalInputs({ memo: buildMemo('2026-03-10T00:00:00.000Z', 'Old memo') });
    const freshInputs = buildLocalInputs({ memo: buildMemo('2026-03-11T00:00:00.000Z', 'New memo') });
    const staleSignature = __companyAnalysisInternals.buildCompanyAnalysisSourceSignature({
      ticker: 'MSFT',
      localInputs: cachedInputs
    });
    const buildOverview = mock(async () => buildAnalysisPayload('Rebuilt Corp'));

    const analysis = await getCompanyAnalysisPayload({
      userId: 'user-1',
      ticker: 'MSFT',
      now: new Date('2026-03-13T12:00:00.000Z')
    }, {
      getLocalInputs: async () => freshInputs,
      getCachedOverview: async () => buildCacheRecord(buildAnalysisPayload('Cached Corp'), staleSignature),
      buildOverview,
      upsertCachedOverview: async () => buildCacheRecord(buildAnalysisPayload('Rebuilt Corp'), staleSignature)
    });

    expect(analysis.company.companyName).toBe('Rebuilt Corp');
    expect(buildOverview).toHaveBeenCalledTimes(1);
  });
});