import { describe, expect, it, vi } from 'vitest';
import { AUTO_ACCEPT_COMMENT, RegulatoryMappingService } from '../../server/compliance/regulatory-mapping-service';
import { RegulatoryFindingRetrievalService } from '../../server/compliance/regulatory-finding-retrieval';
import { acceptedControlIds, REGULATORY_GPO_QUERY_VERSION, REGULATORY_MAPPING_PROMPT_VERSION, type RegulatoryMappingBatchRun, type RegulatoryMappingDecision, type RegulatoryMappingRun } from '../../src/compliance/regulatory-mapping';
import type { RegulatoryChunk, RegulatoryRetrievalRequest } from '../../src/compliance/regulatory-rag';
import { filterUnifiedResults, type UnifiedResultProjection } from '../../src/domain/unified-result';
import type { ComplianceReadPort, ComplianceStore } from '../../src/compliance/compliance-store';

type EngineRepository = ComplianceReadPort & ComplianceStore;
import { removeResultDbScopeIdentifiers } from '../../src/domain/result-db-disclosure';
import { complianceWorkFacetIndex } from '../../src/compliance/ui/compliance-work-facets';
import type { FindingRecord } from '../../src/domain/finding';

const stamp = '2026-09-15T10:00:00.000Z';
// Result-table / occurrence data that must never reach the model or the query.
const resultTableAsset = 'DC01.customer.local';
const customerPolicyValue = 'CUSTOMER\synthetic.account';

function finding(overrides: Partial<UnifiedResultProjection> = {}): UnifiedResultProjection {
  return {
    resultProjectionId: 'scanner-finding:occurrence-1', sourceKind: 'scanner-finding', sourceResultId: 'occurrence-1',
    projectId: 'project-1', assessmentId: 'assessment-1', collectionRunId: 'run-1', scanRunId: 'run-1',
    sourceTool: 'purple-knight', sourceRuleId: 'A-SmbSigning', title: 'SMB signing is not required on domain controllers',
    description: 'The SMB server permits unsigned sessions, allowing relay attacks.', affectedAsset: resultTableAsset,
    severityOriginal: 'high', severityNormalized: 'high', outcomeOriginal: 'fail', outcomeNormalized: 'fail',
    technicalExecutionState: 'completed', resultType: 'compliance_check', isIoe: false, isDeviation: true,
    lifecycleState: 'new', mappingConfidence: 1, reviewStatus: 'unreviewed', importedAt: stamp, createdAt: stamp, frameworkReferences: [], categories: [],
    ...overrides
  };
}

function chunk(sourceStandard: 'ISO/IEC 27001' | 'ISO/IEC 27002'): RegulatoryChunk {
  const reference = sourceStandard === 'ISO/IEC 27001';
  return {
    schemaVersion: 2, corpusId: 'iso-test', corpusVersion: 'v2', documentId: reference ? '27001-5.1' : '27002-5.1-purpose',
    framework: 'ISO/IEC 27002', frameworkVersion: '2022', controlId: '5.1', annexAControlId: 'A.5.1',
    controlTheme: 'organizational', sourceStandard, sourceEdition: '2022', nationalEdition: 'DIN 2024',
    sectionKind: reference ? 'control' : 'purpose', sourcePageStart: 1, sourcePageEnd: 1,
    retrievalRole: reference ? 'reference' : 'semantic', parserVersion: 'test', sourceSha256: reference ? '1'.repeat(64) : '2'.repeat(64),
    chunkId: reference ? 'reference-5.1' : 'semantic-5.1', chunkIndex: 0, language: 'de', title: 'Synthetic control',
    text: reference ? 'Synthetic normative statement.' : 'Synthetic semantic evidence.', textSha256: 'a'.repeat(64)
  };
}

/** In-memory repository keyed like the global (rule-keyed) schema. */
function mockRepository(findings: UnifiedResultProjection[]) {
  const byProjection = new Map(findings.map(item => [item.resultProjectionId, item]));
  const runs = new Map<string, RegulatoryMappingRun>();
  const batches: RegulatoryMappingBatchRun[] = [];
  const decisions: RegulatoryMappingDecision[] = [];
  return {
    getProject: vi.fn(async (projectId: string) => findings.some(item => item.projectId === projectId) ? { id: projectId, name: 'Synthetic project' } : null),
    listProjects: vi.fn(async () => [...new Set(findings.map(item => item.projectId))].map(id => ({ id, name: 'Synthetic project' }))),
    listAssessments: vi.fn(async (projectId: string) => [...new Set(findings.filter(item => item.projectId === projectId).map(item => item.assessmentId).filter(Boolean))]
      .map(id => ({ id: id!, projectId, label: 'Synthetic assessment', createdAt: stamp }))),
    listProjectScanRuns: vi.fn(async (projectId: string) => [...new Map(findings.filter(item => item.projectId === projectId && item.scanRunId)
      .map(item => [item.scanRunId!, { id: item.scanRunId!, assessmentId: item.assessmentId!, sequence: 1, startedAt: stamp }])).values()]),
    queryUnifiedResults: vi.fn(async (query = {}) => {
      const filtered = filterUnifiedResults(findings, query);
      const offset = query.offset ?? 0;
      return { total: filtered.length, items: filtered.slice(offset, offset + (query.limit ?? filtered.length)) };
    }),
    // Mirrors the real Result DB read: scoped to the project, returned without real scope ids.
    getUnifiedResultById: vi.fn(async (id: string, projectId?: string) => {
      const item = byProjection.get(id);
      return item && (projectId === undefined || item.projectId === projectId) ? removeResultDbScopeIdentifiers(item) : null;
    }),
    getRegulatoryMappingRun: vi.fn(async (id: string) => runs.get(id) ?? null),
    claimRegulatoryMappingRun: vi.fn(async (run: RegulatoryMappingRun, force: boolean) => {
      const existing = runs.get(run.id);
      if (existing && (['queued', 'running'].includes(existing.status) || existing.status === 'succeeded' && !force)) {
        return { run: existing, claimed: false };
      }
      runs.set(run.id, run);
      return { run, claimed: true };
    }),
    saveRegulatoryMappingRun: vi.fn(async (run: RegulatoryMappingRun) => { runs.set(run.id, run); return run; }),
    listRegulatoryMappingRuns: vi.fn(async () => [...runs.values()]),
    createRegulatoryMappingBatchRun: vi.fn(async (run: RegulatoryMappingBatchRun) => {
      const existing = batches.find(item => item.projectId === run.projectId && (item.idempotencyKey === run.idempotencyKey
        || item.scopeKey === run.scopeKey && ['queued', 'running'].includes(item.status)));
      if (existing) return existing;
      batches.push(run);
      return run;
    }),
    updateRegulatoryMappingBatchRun: vi.fn(async (run: RegulatoryMappingBatchRun) => {
      const index = batches.findIndex(item => item.id === run.id);
      if (index < 0) throw new Error('missing batch');
      batches[index] = run;
      return run;
    }),
    listRegulatoryMappingBatchRuns: vi.fn(async (projectId: string, scopeKey?: string) => batches
      .filter(item => item.projectId === projectId && (!scopeKey || item.scopeKey === scopeKey))
      .slice().reverse()),
    createRegulatoryMappingDecision: vi.fn(async (decision: RegulatoryMappingDecision, expected?: string) => {
      const run = runs.get(decision.mappingId);
      if (!run || run.ruleKey !== decision.ruleKey || run.status !== 'succeeded') throw new Error('missing mapping');
      if (!run.candidates.some(c => c.controlId === decision.controlId)) throw new Error('ungrounded control');
      const latest = decisions.filter(d => d.ruleKey === decision.ruleKey && d.controlId === decision.controlId)
        .sort((a, b) => b.createdAt.localeCompare(a.createdAt) || b.id.localeCompare(a.id))[0];
      if ((expected ?? undefined) !== (latest?.id ?? undefined)) throw new Error('conflict');
      const stored = { ...decision, ...(latest ? { previousDecisionId: latest.id } : {}) };
      decisions.push(stored);
      return stored;
    }),
    listRegulatoryMappingDecisions: vi.fn(async (ruleKey: string) => decisions.filter(d => d.ruleKey === ruleKey)
      .sort((a, b) => b.createdAt.localeCompare(a.createdAt) || b.id.localeCompare(a.id)))
  } as unknown as EngineRepository;
}

function service(repository: EngineRepository, complete: (system: string, input: string) => Promise<unknown>) {
  return new RegulatoryMappingService(repository, repository, {
    findingRetrieval: new RegulatoryFindingRetrievalService({ retrieve: vi.fn(async (_r: RegulatoryRetrievalRequest) => [{ score: 0.9, chunk: chunk('ISO/IEC 27002') }]) }),
    index: { ensureCollection: vi.fn(), replaceDocuments: vi.fn(), searchDense: vi.fn(), list: vi.fn(async () => [chunk('ISO/IEC 27001')]) },
    client: { model: 'work-model', complete: complete as never }, corpusId: 'iso-test', corpusVersion: 'v2', embeddingModel: 'bge-m3',
    now: () => new Date(stamp)
  });
}

describe('regulatory mapping service', () => {
  it('shares one global mapping and decision across projects and sends no result-table data', async () => {
    const findingB = finding({ resultProjectionId: 'scanner-finding:occurrence-2', sourceResultId: 'occurrence-2', projectId: 'project-2', affectedAsset: 'DC02.other.local' });
    const repository = mockRepository([finding(), findingB]);
    const complete = vi.fn(async (_system: string, _input: string) => ({ value: {
      schemaVersion: 1, outcome: 'mapped', mappings: [{ controlId: '5.1', relationship: 'primary', confidence: 'high',
        rationale: 'Synthetic rationale.', evidenceChunkIds: ['semantic-5.1', 'reference-5.1'] }]
    }, usage: { totalTokens: 12 } }));
    const svc = service(repository, complete);

    await svc.start('project-1', { resultProjectionId: 'scanner-finding:occurrence-1' });
    await svc.close();

    // The same rule mapped once in project-1 is visible to project-2 (global sharing).
    const shared = await svc.get('project-2', 'scanner-finding:occurrence-2');
    expect(shared).toMatchObject({ state: 'succeeded', run: { ruleKey: 'purple-knight:A-SmbSigning', sourceTool: 'purple-knight', embeddingModel: 'bge-m3', tokenUsage: { totalTokens: 12 } } });
    expect(shared.run?.result?.mappings[0].controlId).toBe('5.1');
    expect(shared.run?.promptVersion).toBe(REGULATORY_MAPPING_PROMPT_VERSION);
    expect(complete).toHaveBeenCalledOnce();

    // The copyrighted ISO clause text is stripped from the response but still reaches the model.
    expect(shared.run?.candidates.every(c => c.evidence.every(item => item.text === undefined))).toBe(true);
    expect(complete.mock.calls[0][0]).toContain('governs the same security subject');
    expect(complete.mock.calls[0][1]).toContain('Synthetic semantic evidence.');
    expect(complete.mock.calls[0][1]).toContain('SMB signing is not required');
    expect(complete.mock.calls[0][1]).not.toContain(resultTableAsset);
    expect(complete.mock.calls[0][1]).not.toContain('DC02.other.local');
    expect(complete.mock.calls[0][1]).not.toContain('A.5.1');

    // The automatic acceptance in project-1 is visible to project-2 (global decisions), and so is a later manual decision.
    expect(shared.decisions.map(d => ({ controlId: d.controlId, decision: d.decision }))).toEqual([{ controlId: '5.1', decision: 'accepted' }]);
    await svc.decide('project-1', { resultProjectionId: 'scanner-finding:occurrence-1', controlId: '5.1', decision: 'rejected', expectedLatestDecisionId: shared.decisions[0].id });
    const afterDecision = await svc.get('project-2', 'scanner-finding:occurrence-2');
    const rejected = afterDecision.decisions.find(d => d.decision === 'rejected');
    expect(rejected).toMatchObject({ controlId: '5.1', previousDecisionId: shared.decisions[0].id });
    expect(acceptedControlIds(afterDecision.decisions)).toEqual([]);
  });

  it('maps a finding although the Result DB row carries no real project id, but never across projects', async () => {
    const repository = mockRepository([finding()]);
    const complete = vi.fn(async (_system: string, _input: string) => ({ value: {
      schemaVersion: 1, outcome: 'mapped', mappings: [{ controlId: '5.1', relationship: 'primary', confidence: 'high',
        rationale: 'Synthetic rationale.', evidenceChunkIds: ['semantic-5.1', 'reference-5.1'] }]
    } }));
    const svc = service(repository, complete);
    expect((await repository.getUnifiedResultById('scanner-finding:occurrence-1'))?.projectId).toBe('scoped-project');

    await expect(svc.get('project-1', 'scanner-finding:occurrence-1')).resolves.toMatchObject({ generationEnabled: true });
    await svc.start('project-1', { resultProjectionId: 'scanner-finding:occurrence-1' });
    await svc.close();
    const automatic = (await svc.get('project-1', 'scanner-finding:occurrence-1')).decisions[0];
    await expect(svc.decide('project-1', { resultProjectionId: 'scanner-finding:occurrence-1', controlId: '5.1', decision: 'rejected', expectedLatestDecisionId: automatic.id }))
      .resolves.toMatchObject({ state: 'succeeded' });

    await expect(svc.get('project-2', 'scanner-finding:occurrence-1')).rejects.toThrow('does not exist in this project');
    await expect(svc.start('project-2', { resultProjectionId: 'scanner-finding:occurrence-1' })).rejects.toThrow('does not exist in this project');
    await expect(svc.decide('project-2', { resultProjectionId: 'scanner-finding:occurrence-1', controlId: '5.1', decision: 'rejected' }))
      .rejects.toThrow('does not exist in this project');
  });

  it('counts accepted controls once per finding for the timeslot deviations of a client', async () => {
    const gpo = (id: string) => finding({ resultProjectionId: `policy-evaluation-comparison:${id}`, sourceResultId: `comparison-${id}`,
      sourceKind: 'policy-evaluation', sourceTool: 'GPOs', sourceRuleId: 'registry:machine:software\policies\synthetic:mode',
      policyScope: 'computer', title: 'Synthetic policy mode' });
    const findings = [
      finding(),
      finding({ resultProjectionId: 'scanner-finding:occurrence-2', sourceResultId: 'occurrence-2' }),
      finding({ resultProjectionId: 'scanner-finding:not-deviation', sourceResultId: 'not-deviation', isDeviation: false }),
      finding({ resultProjectionId: 'scanner-finding:rejected', sourceResultId: 'rejected', sourceRuleId: 'A-Rejected', title: 'SMB signing is not enforced' }),
      // Two baseline packages of one GPO setting are one Work record and count once.
      gpo('one'), gpo('two')
    ];
    const repository = mockRepository(findings);
    const svc = service(repository, vi.fn(async () => ({ value: {
      schemaVersion: 1, outcome: 'mapped', mappings: [{ controlId: '5.1', relationship: 'primary', confidence: 'high',
        rationale: 'Synthetic rationale.', evidenceChunkIds: ['semantic-5.1', 'reference-5.1'] }]
    } })));
    for (const resultProjectionId of ['scanner-finding:occurrence-1', 'scanner-finding:rejected', 'policy-evaluation-comparison:one']) {
      await svc.start('project-1', { resultProjectionId });
      await svc.close();
    }
    const accepted = (await svc.get('project-1', 'scanner-finding:rejected')).decisions[0];
    await svc.decide('project-1', { resultProjectionId: 'scanner-finding:rejected', controlId: '5.1', decision: 'rejected', expectedLatestDecisionId: accepted.id });

    const overview = await svc.controlOverview('project-1', { assessmentIds: ['assessment-1'], scanRunIds: ['run-1'] });
    expect(overview).toMatchObject({ version: 1, projectId: 'project-1', findingCount: 3,
      controls: [{ controlId: '5.1', annexAControlId: 'A.5.1', title: 'Synthetic control', theme: 'Organizational' }] });
    expect(overview.controls[0].findings.map(item => item.resultProjectionId))
      .toEqual(['scanner-finding:occurrence-1', 'scanner-finding:occurrence-2', 'policy-evaluation-comparison:one']);
    // Only the timeslot deviations are read, and only through the read-only port.
    expect(vi.mocked(repository.queryUnifiedResults).mock.calls.at(-1)![0]).toMatchObject({ audience: 'result-db', deviation: true, projectId: 'project-1' });
    // The Work filters read every mappable finding, so the status filter in Work decides what is shown.
    const assignments = await svc.controlAssignments('project-1', { assessmentIds: ['assessment-1'], scanRunIds: ['run-1'] });
    expect(assignments.findingCount).toBe(4);
    expect(assignments.controls[0].findings.map(item => item.resultProjectionId)).toContain('scanner-finding:not-deviation');
    expect(vi.mocked(repository.queryUnifiedResults).mock.calls.at(-1)?.[0]?.deviation).toBeUndefined();
    await expect(svc.controlOverview('project-1', { assessmentIds: [], scanRunIds: [] })).rejects.toThrow('timeslot scope is required');
    await expect(svc.controlOverview('project-1', { assessmentIds: ['foreign-assessment'], scanRunIds: [] })).rejects.toThrow('outside this project');
  });

  it('counts a GPO setting once and gives Work its setting ID although the Result DB withholds it', async () => {
    // Internal comparisons carry the setting ID; the Result DB rows of the same comparisons do not.
    const comparison = (id: string, settingId: string, title: string, policyScope: 'computer' | 'user') => finding({
      resultProjectionId: `policy-evaluation-comparison:${id}`, sourceResultId: `comparison-${id}`, sourceKind: 'policy-evaluation',
      sourceTool: 'GPOs', sourceRuleId: settingId, policyScope, title });
    const findings = [
      // Three baseline packages of one setting, a second setting, the same title in the other scope and
      // a different setting that shares the first setting's title.
      comparison('a1', 'gpo-policy-identity-aaaa', 'Synthetic · Mode', 'computer'),
      comparison('a2', 'gpo-policy-identity-aaaa', 'Synthetic · Mode', 'computer'),
      comparison('a3', 'gpo-policy-identity-aaaa', 'Synthetic · Mode', 'computer'),
      comparison('b1', 'gpo-policy-identity-bbbb', 'Security Options · SyntheticKey', 'computer'),
      comparison('b2', 'gpo-policy-identity-bbbb', 'Security Options · SyntheticKey', 'computer'),
      comparison('c1', 'gpo-policy-identity-cccc', 'Synthetic · Mode', 'user'),
      comparison('d1', 'gpo-policy-identity-dddd', 'Synthetic · Mode', 'computer')
    ];
    const repository = mockRepository(findings);
    const internal = vi.mocked(repository.queryUnifiedResults).getMockImplementation()!;
    vi.mocked(repository.queryUnifiedResults).mockImplementation(async (query = {}) => {
      const page = await internal(query);
      return query.audience === 'internal-analysis' ? page
        : { ...page, items: page.items.map(item => ({ ...item, sourceRuleId: undefined })) };
    });
    const svc = service(repository, vi.fn(async () => ({ value: {
      schemaVersion: 1, outcome: 'mapped', mappings: [{ controlId: '5.1', relationship: 'primary', confidence: 'high',
        rationale: 'Synthetic rationale.', evidenceChunkIds: ['semantic-5.1', 'reference-5.1'] }]
    } })));
    const scope = { assessmentIds: ['assessment-1'], scanRunIds: ['run-1'], filters: { deviation: true } };
    await svc.startBatch('project-1', { ...scope, idempotencyKey: 'batch-gpo-settings' });
    await svc.close();

    // Mapping stays one global rule per disclosed title; counting follows the Work settings.
    expect((await svc.getBatch('project-1', scope)).run?.counts)
      .toMatchObject({ filteredResultCount: 7, eligibleFindingCount: 4, distinctRuleCount: 2 });
    const overview = await svc.controlOverview('project-1', { assessmentIds: ['assessment-1'], scanRunIds: ['run-1'] });
    expect(overview.findingCount).toBe(4);
    expect(overview.controls[0].findings.map(item => `${item.policyScope}:${item.sourceRuleId}`).sort()).toEqual([
      'computer:gpo-policy-identity-aaaa', 'computer:gpo-policy-identity-bbbb',
      'computer:gpo-policy-identity-dddd', 'user:gpo-policy-identity-cccc']);
    // The internal read is limited to GPO comparisons of the same timeslot.
    const internalQueries = vi.mocked(repository.queryUnifiedResults).mock.calls.map(call => call[0] ?? {})
      .filter(query => query.audience === 'internal-analysis');
    expect(internalQueries.length).toBeGreaterThan(0);
    expect(internalQueries.every(query => query.projectId === 'project-1' && query.sourceKind?.join() === 'policy-evaluation'
      && query.assessmentIds?.join() === 'assessment-1' && query.scanRunIds?.join() === 'run-1')).toBe(true);

    // The Work ISO filter finds the rolled-up GPO setting by scope and setting ID.
    const workSetting = { id: `gpo-work-setting:${encodeURIComponent(JSON.stringify(['project-1', 'aggregation-1', 'computer', 'gpo-policy-identity-aaaa']))}` } as FindingRecord;
    expect(complianceWorkFacetIndex(overview).facets[0].valuesFor!(workSetting)).toEqual(['5.1']);
  });

  it('accepts the first two proposals automatically, keeps existing decisions and accepts nothing without a proposal', async () => {
    const semantic = (controlId: string): RegulatoryChunk => ({ ...chunk('ISO/IEC 27002'), controlId, annexAControlId: `A.${controlId}`,
      documentId: `27002-${controlId}`, chunkId: `semantic-${controlId}` });
    const proposal = (controlId: string) => ({ controlId, relationship: 'supporting', confidence: 'medium', rationale: 'Synthetic rationale.',
      evidenceChunkIds: [`semantic-${controlId}`] });
    const build = (repository: EngineRepository, value: unknown) => new RegulatoryMappingService(repository, repository, {
      findingRetrieval: new RegulatoryFindingRetrievalService({ retrieve: vi.fn(async (_r: RegulatoryRetrievalRequest) =>
        ['8.20', '5.15', '5.1'].map((controlId, index) => ({ score: 0.9 - index / 10, chunk: semantic(controlId) }))) }),
      index: { ensureCollection: vi.fn(), replaceDocuments: vi.fn(), searchDense: vi.fn(), list: vi.fn(async () => [chunk('ISO/IEC 27001')]) },
      client: { model: 'work-model', complete: vi.fn(async () => ({ value })) as never }, corpusId: 'iso-test', corpusVersion: 'v2',
      embeddingModel: 'bge-m3', now: () => new Date(stamp)
    });
    const accepted = async (svc: RegulatoryMappingService) => acceptedControlIds((await svc.get('project-1', 'scanner-finding:occurrence-1')).decisions).sort();
    const mapped = (...controls: string[]) => ({ schemaVersion: 1, outcome: 'mapped', mappings: controls.map(proposal) });

    // Three proposals: the first two in the model's order are accepted, the third stays undecided.
    const three = build(mockRepository([finding()]), mapped('5.15', '8.20', '5.1'));
    await three.start('project-1', { resultProjectionId: 'scanner-finding:occurrence-1' });
    await three.close();
    expect(await accepted(three)).toEqual(['5.15', '8.20']);
    expect((await three.get('project-1', 'scanner-finding:occurrence-1')).decisions.every(item => item.comment === AUTO_ACCEPT_COMMENT)).toBe(true);

    // A single proposal is accepted alone.
    const one = build(mockRepository([finding()]), mapped('8.20'));
    await one.start('project-1', { resultProjectionId: 'scanner-finding:occurrence-1' });
    await one.close();
    expect(await accepted(one)).toEqual(['8.20']);

    // Regenerating never overrides a manual reject; a still undecided first proposal is accepted.
    const automatic = (await three.get('project-1', 'scanner-finding:occurrence-1')).decisions.find(item => item.controlId === '5.15')!;
    await three.decide('project-1', { resultProjectionId: 'scanner-finding:occurrence-1', controlId: '5.15', decision: 'rejected', expectedLatestDecisionId: automatic.id });
    await three.start('project-1', { resultProjectionId: 'scanner-finding:occurrence-1' });
    await three.close();
    expect(await accepted(three)).toEqual(['8.20']);

    // Without a proposal nothing is accepted.
    const none = build(mockRepository([finding()]), { schemaVersion: 1, outcome: 'no_relevant_control', mappings: [], reason: 'Synthetic refusal.' });
    await none.start('project-1', { resultProjectionId: 'scanner-finding:occurrence-1' });
    await none.close();
    expect((await none.get('project-1', 'scanner-finding:occurrence-1')).decisions).toEqual([]);
  });

  it('keeps a control decided by an earlier run reviewable after a new pipeline version stops retrieving it', async () => {
    const semantic = (controlId: string): RegulatoryChunk => ({ ...chunk('ISO/IEC 27002'), controlId, annexAControlId: `A.${controlId}`,
      documentId: `27002-${controlId}`, chunkId: `semantic-${controlId}` });
    const repository = mockRepository([finding()]);
    const build = (corpusVersion: string, controlId: string) => new RegulatoryMappingService(repository, repository, {
      findingRetrieval: new RegulatoryFindingRetrievalService({ retrieve: vi.fn(async (_r: RegulatoryRetrievalRequest) => [{ score: 0.9, chunk: semantic(controlId) }]) }),
      index: { ensureCollection: vi.fn(), replaceDocuments: vi.fn(), searchDense: vi.fn(), list: vi.fn(async () => [chunk('ISO/IEC 27001')]) },
      client: { model: 'work-model', complete: vi.fn(async () => ({ value: { schemaVersion: 1, outcome: 'mapped', mappings: [{ controlId,
        relationship: 'primary', confidence: 'high', rationale: 'Synthetic rationale.', evidenceChunkIds: [`semantic-${controlId}`] }] } })) as never },
      corpusId: 'iso-test', corpusVersion, embeddingModel: 'bge-m3', now: () => new Date(stamp)
    });
    const older = build('v1', '8.3');
    await older.start('project-1', { resultProjectionId: 'scanner-finding:occurrence-1' });
    await older.close();
    const current = build('v2', '8.2');
    await current.start('project-1', { resultProjectionId: 'scanner-finding:occurrence-1' });
    await current.close();

    const response = await current.get('project-1', 'scanner-finding:occurrence-1');
    expect(acceptedControlIds(response.decisions).sort()).toEqual(['8.2', '8.3']);
    expect(response.run?.candidates.map(item => item.controlId)).toEqual(['8.2']);
    expect(response.earlierControls).toEqual([{ controlId: '8.3', annexAControlId: 'A.8.3', title: semantic('8.3').title }]);

    // Rejecting the earlier control is grounded by the older run that retrieved it.
    const earlier = response.decisions.find(item => item.controlId === '8.3')!;
    const rejected = await current.decide('project-1', { resultProjectionId: 'scanner-finding:occurrence-1', controlId: '8.3', decision: 'rejected', expectedLatestDecisionId: earlier.id });
    expect(acceptedControlIds(rejected.decisions)).toEqual(['8.2']);
    expect(rejected.decisions.find(item => item.controlId === '8.3' && item.previousDecisionId === earlier.id)).toMatchObject({ decision: 'rejected', mappingId: earlier.mappingId });
  });

  it('keeps a saved mapping readable when the retrieval index is unavailable', async () => {
    const repository = mockRepository([finding()]);
    const complete = vi.fn(async (_system: string, _input: string) => ({ value: {
      schemaVersion: 1, outcome: 'mapped', mappings: [{ controlId: '5.1', relationship: 'primary', confidence: 'high',
        rationale: 'Synthetic rationale.', evidenceChunkIds: ['semantic-5.1', 'reference-5.1'] }]
    } }));
    const online = service(repository, complete);
    await online.start('project-1', { resultProjectionId: 'scanner-finding:occurrence-1' });
    await online.close();

    const offline = new RegulatoryMappingService(repository, repository, {
      findingRetrieval: {} as never,
      index: { list: vi.fn(async () => { throw new Error('Index unavailable'); }) } as never,
      client: { model: 'work-model', complete } as never,
      corpusId: 'iso-test', corpusVersion: 'v2', embeddingModel: 'bge-m3'
    });
    const response = await offline.get('project-1', 'scanner-finding:occurrence-1');
    expect(response).toMatchObject({ generationEnabled: false, state: 'succeeded', run: { status: 'succeeded' } });
    expect(response.run?.result?.mappings[0].controlId).toBe('5.1');
    expect(response.run?.candidates.every(candidate => candidate.evidence.every(item => item.text === undefined))).toBe(true);
  });

  it('drops one ungrounded evidence id but keeps the otherwise-valid mapping', async () => {
    const { svc } = await runWith({
      schemaVersion: 1, outcome: 'mapped', mappings: [{ controlId: '5.1', relationship: 'primary', confidence: 'high',
        rationale: 'Synthetic rationale.', evidenceChunkIds: ['semantic-5.1', 'not-a-supplied-chunk'] }]
    });
    const completed = await svc.get('project-1', 'scanner-finding:occurrence-1');
    expect(completed.run?.status).toBe('succeeded');
    expect(completed.run?.result?.mappings[0].evidenceChunkIds).toEqual(['semantic-5.1']);
    expect(completed.run?.errorCode).toBeUndefined();
  });

  it('fails safely with a structural detail when the model maps to an unknown control', async () => {
    const { svc } = await runWith({
      schemaVersion: 1, outcome: 'mapped', mappings: [{ controlId: 'A.5.1', relationship: 'primary', confidence: 'high',
        rationale: 'Synthetic rationale.', evidenceChunkIds: ['semantic-5.1'] }]
    });
    const completed = await svc.get('project-1', 'scanner-finding:occurrence-1');
    expect(completed.run?.status).toBe('failed');
    expect(completed.run?.errorCode).toBe('regulatory_mapping_invalid_output');
    expect(completed.run?.errorDetail).toContain('unknown candidate control');
    expect(completed.run?.errorDetail).not.toContain(resultTableAsset);
  });

  it('maps the complete filtered timeslot including GPO comparisons, excludes context rows and deduplicates global rules', async () => {
    const findings = [
      finding(),
      finding({ resultProjectionId: 'scanner-finding:occurrence-2', sourceResultId: 'occurrence-2' }),
      finding({ resultProjectionId: 'scanner-finding:occurrence-3', sourceResultId: 'occurrence-3', sourceRuleId: 'A-Second', title: 'Second synthetic check' }),
      finding({ resultProjectionId: 'policy-observation:one', sourceResultId: 'policy-one', sourceKind: 'policy-observation', sourceRuleId: undefined }),
      // Two baseline packages of one GPO setting share one global rule.
      ...['one', 'two'].map(id => finding({ resultProjectionId: `policy-evaluation-comparison:${id}`, sourceResultId: `comparison-${id}`,
        sourceKind: 'policy-evaluation', sourceTool: 'GPOs', sourceRuleId: 'registry:machine:software\policies\synthetic:mode',
        title: 'Synthetic policy mode', policyActualValue: { principals: [customerPolicyValue] } })),
      finding({ resultProjectionId: 'scanner-finding:unsupported', sourceResultId: 'unsupported', sourceRuleId: 'A-Unsupported', title: '' }),
      finding({ resultProjectionId: 'scanner-finding:not-deviation', sourceResultId: 'not-deviation', sourceRuleId: 'A-Ignored', isDeviation: false })
    ];
    const repository = mockRepository(findings);
    const complete = vi.fn(async (_system: string, _input: string) => ({ value: {
      schemaVersion: 1, outcome: 'mapped', mappings: [{ controlId: '5.1', relationship: 'primary', confidence: 'high',
        rationale: 'Synthetic rationale.', evidenceChunkIds: ['semantic-5.1', 'reference-5.1'] }]
    } }));
    const svc = service(repository, complete);

    await svc.startBatch('project-1', {
      assessmentIds: ['assessment-1'], scanRunIds: ['run-1'], filters: { deviation: true, affectedAsset: resultTableAsset },
      idempotencyKey: 'batch-filtered-1'
    });
    await svc.close();

    const response = await svc.getBatch('project-1', {
      assessmentIds: ['assessment-1'], scanRunIds: ['run-1'], filters: { deviation: true, affectedAsset: resultTableAsset }
    });
    expect(response.run).toMatchObject({ status: 'completed', counts: {
      filteredResultCount: 7,
      excludedNonScannerCount: 1,
      // The two baseline comparisons of one GPO setting are one eligible finding, like its Work record.
      eligibleFindingCount: 4,
      unsupportedFindingCount: 1,
      distinctRuleCount: 3,
      scheduledRuleCount: 3,
      succeededRuleCount: 3,
      failedRuleCount: 0
    } });
    expect(complete).toHaveBeenCalledTimes(3);
    expect(complete.mock.calls.every(call => !String(call[1]).includes(resultTableAsset) && !String(call[1]).includes('synthetic.account'))).toBe(true);
  });

  it('maps a single GPO baseline comparison under its technical setting and refuses a raw observation', async () => {
    const gpo = finding({ resultProjectionId: 'policy-evaluation-comparison:one', sourceResultId: 'comparison-one',
      sourceKind: 'policy-evaluation', sourceTool: 'GPOs', sourceRuleId: 'registry:machine:software\policies\synthetic:mode',
      title: 'Synthetic policy mode', policyActualValue: { principals: [customerPolicyValue] } });
    const observation = finding({ resultProjectionId: 'policy-observation:one', sourceResultId: 'observation-one', sourceKind: 'policy-observation' });
    const complete = vi.fn(async (_system: string, _input: string) => ({ value: {
      schemaVersion: 1, outcome: 'mapped', mappings: [{ controlId: '5.1', relationship: 'primary', confidence: 'high',
        rationale: 'Synthetic rationale.', evidenceChunkIds: ['semantic-5.1', 'reference-5.1'] }]
    } }));
    const svc = service(mockRepository([gpo, observation]), complete);

    await svc.start('project-1', { resultProjectionId: gpo.resultProjectionId });
    await svc.close();
    const mapped = await svc.get('project-1', gpo.resultProjectionId);
    expect(mapped).toMatchObject({ generationEnabled: true, state: 'succeeded', run: { ruleKey: 'GPOs:registry:machine:software\policies\synthetic:mode' } });
    // The stored identity tuple must differ per GPO query version, or a version bump collides with the older row.
    expect(mapped.run?.promptVersion).toBe(`${REGULATORY_MAPPING_PROMPT_VERSION}+${REGULATORY_GPO_QUERY_VERSION}`);
    expect(complete).toHaveBeenCalledTimes(1);
    expect(String(complete.mock.calls[0][1])).not.toContain('synthetic.account');

    expect(await svc.get('project-1', observation.resultProjectionId)).toMatchObject({ generationEnabled: false, state: 'unsupported' });
    await expect(svc.start('project-1', { resultProjectionId: observation.resultProjectionId })).rejects.toThrow('GPO baseline comparisons');
  });

  it('bounds concurrent mapping completions across a batch', async () => {
    const findings = Array.from({ length: 5 }, (_, index) => finding({
      resultProjectionId: `scanner-finding:occurrence-${index}`,
      sourceResultId: `occurrence-${index}`,
      sourceRuleId: `A-Rule-${index}`,
      title: `Synthetic check ${index}`
    }));
    let active = 0;
    let maximum = 0;
    const complete = vi.fn(async () => {
      active += 1;
      maximum = Math.max(maximum, active);
      await new Promise(resolve => setTimeout(resolve, 5));
      active -= 1;
      return { value: { schemaVersion: 1, outcome: 'no_relevant_control', reason: 'Synthetic.', mappings: [] } };
    });
    const svc = service(mockRepository(findings), complete);
    await svc.startBatch('project-1', {
      assessmentIds: ['assessment-1'], scanRunIds: ['run-1'], filters: { deviation: true }, idempotencyKey: 'batch-concurrency-1'
    });
    await svc.close();
    expect(complete).toHaveBeenCalledTimes(5);
    expect(maximum).toBe(2);
  });

  it('reads every server page independently of loaded rows', async () => {
    const findings = Array.from({ length: 501 }, (_, index) => finding({
      resultProjectionId: `scanner-finding:occurrence-${index}`,
      sourceResultId: `occurrence-${index}`
    }));
    const repository = mockRepository(findings);
    const complete = vi.fn(async () => ({ value: {
      schemaVersion: 1, outcome: 'no_relevant_control', reason: 'Synthetic.', mappings: []
    } }));
    const svc = service(repository, complete);
    await svc.startBatch('project-1', {
      assessmentIds: ['assessment-1'], scanRunIds: ['run-1'], filters: { deviation: true }, idempotencyKey: 'batch-many-pages-1'
    });
    await svc.close();
    const response = await svc.getBatch('project-1', {
      assessmentIds: ['assessment-1'], scanRunIds: ['run-1'], filters: { deviation: true }
    });
    expect(response.run?.counts).toMatchObject({ filteredResultCount: 501, eligibleFindingCount: 501, distinctRuleCount: 1 });
    expect(repository.queryUnifiedResults).toHaveBeenCalledTimes(2);
    expect(complete).toHaveBeenCalledOnce();
  });

  it('fails the batch safely when the filtered total changes between pages', async () => {
    const findings = Array.from({ length: 501 }, (_, index) => finding({
      resultProjectionId: `scanner-finding:occurrence-${index}`,
      sourceResultId: `occurrence-${index}`
    }));
    const repository = mockRepository(findings);
    let page = 0;
    vi.mocked(repository.queryUnifiedResults).mockImplementation(async (query = {}) => {
      page += 1;
      const offset = query.offset ?? 0;
      return { total: page === 1 ? 501 : 500, items: findings.slice(offset, offset + (query.limit ?? findings.length)) };
    });
    const complete = vi.fn();
    const svc = service(repository, complete);
    await svc.startBatch('project-1', {
      assessmentIds: ['assessment-1'], scanRunIds: ['run-1'], filters: { deviation: true }, idempotencyKey: 'batch-changing-total-1'
    });
    await svc.close();
    const response = await svc.getBatch('project-1', {
      assessmentIds: ['assessment-1'], scanRunIds: ['run-1'], filters: { deviation: true }
    });
    expect(response.run).toMatchObject({ status: 'failed', errorCode: 'regulatory_mapping_batch_scope_changed' });
    expect(complete).not.toHaveBeenCalled();
  });

  it('completes with partial failures, then reuses success and retries only the failed rule', async () => {
    const findings = [finding(), finding({
      resultProjectionId: 'scanner-finding:occurrence-2', sourceResultId: 'occurrence-2', sourceRuleId: 'A-Second', title: 'Second synthetic check'
    })];
    let secondAttempts = 0;
    const complete = vi.fn(async (_system: string, input: string) => {
      if (input.includes('Second synthetic check') && ++secondAttempts === 1) throw new Error('synthetic provider failure');
      return { value: { schemaVersion: 1, outcome: 'no_relevant_control', reason: 'Synthetic.', mappings: [] } };
    });
    const svc = service(mockRepository(findings), complete);
    const scope = { assessmentIds: ['assessment-1'], scanRunIds: ['run-1'], filters: { deviation: true } };
    await svc.startBatch('project-1', { ...scope, idempotencyKey: 'batch-partial-1' });
    await svc.close();
    expect((await svc.getBatch('project-1', scope)).run).toMatchObject({
      status: 'completed', counts: { scheduledRuleCount: 2, succeededRuleCount: 1, failedRuleCount: 1 }
    });

    await svc.startBatch('project-1', { ...scope, idempotencyKey: 'batch-partial-2' });
    await svc.close();
    expect((await svc.getBatch('project-1', scope)).run).toMatchObject({
      status: 'completed', counts: {
        distinctRuleCount: 2, reusedSucceededRuleCount: 1, scheduledRuleCount: 1, succeededRuleCount: 1, failedRuleCount: 0
      }
    });
    expect(complete).toHaveBeenCalledTimes(3);
  });

  it('reuses an active single-finding mapping without a duplicate model call', async () => {
    let release!: () => void;
    const gate = new Promise<void>(resolve => { release = resolve; });
    const complete = vi.fn(async () => {
      await gate;
      return { value: { schemaVersion: 1, outcome: 'no_relevant_control', reason: 'Synthetic.', mappings: [] } };
    });
    const svc = service(mockRepository([finding()]), complete);
    await svc.start('project-1', { resultProjectionId: 'scanner-finding:occurrence-1' });
    const scope = { assessmentIds: ['assessment-1'], scanRunIds: ['run-1'], filters: { deviation: true } };
    await svc.startBatch('project-1', { ...scope, idempotencyKey: 'batch-active-reuse-1' });
    release();
    await svc.close();
    expect((await svc.getBatch('project-1', scope)).run?.counts).toMatchObject({
      distinctRuleCount: 1, reusedActiveRuleCount: 1, scheduledRuleCount: 0
    });
    expect(complete).toHaveBeenCalledOnce();
  });
});

async function runWith(value: unknown): Promise<{ svc: RegulatoryMappingService }> {
  const repository = mockRepository([finding()]);
  const svc = service(repository, vi.fn(async () => ({ value })));
  await svc.start('project-1', { resultProjectionId: 'scanner-finding:occurrence-1' });
  await svc.close();
  return { svc };
}