const assert = require('node:assert/strict')
const crypto = require('node:crypto')
const fs = require('node:fs')
const path = require('node:path')
const { sixthRecoveryScope, candidateSourceTreeHash } = require('./wiki_sixth_recovery_review.cjs')

const seventhRecoveryScope = Object.freeze({ ...sixthRecoveryScope })
const seventhPins = Object.freeze({
  kind: 'wiki_source_name_correction_v1',
  evidence_directory: 'acceptance/wiki-source-name-correction-private-20260921',
  build_directory: 'acceptance/wiki-identity-repair-build-20260921',
  baseline_release: 'public-20260921-113500',
  baseline_image: 'sha256:c1755b2884652da1046da5e86b9cbc613435236ce98ea8b204b30d6981dda094',
  baseline_published_at: '2026-09-21T03:41:42.894Z',
  previous_release: 'public-20260921-040700',
  previous_image: 'sha256:a3dbc9cecfca4d4143805a91a961e137da148ef3b8cc2211ba90cefb78207449',
  previous_queued_at: '2026-09-20T20:28:12.142388+00:00',
  checkpoint_fingerprint: '037c70fedd18d2fa1ec3d5017d290630b0fea0421e8b6224c425283cbed0e7c7',
  previous_source_tree_hash: '7f09d5510b1d4d93f1b10d2697e536df96d7a0b93da3c75b6226d62e5af7b305',
  previous_binary_sha256: '89ae673a89587a8d47b855f2a73b58afb2fdddc2d831aa710906316873cc42c2',
  test_package: 'github.com/Tencent/WeKnora/internal/application/service',
})
const seventhRequiredTests = Object.freeze([
  'TestWikiIdentityRepairPatchesOnlyRejectedNamesUnderExistingBudget',
  'TestWikiIdentityRepairRejectsPartialOrUnsupportedPatchesWithoutMutation',
  'TestWikiIdentityRepairNeverDeletesUnsupportedAliases',
  'TestWikiIdentityRepairFailureKeepsOriginalErrorAndNeverRetriesProvider',
  'TestWikiIdentityRepairCompletesWindowAndPreservesEarlierCheckpoint',
])
const seventhGraphDifference = Object.freeze({ path: 'internal/application/repository/retriever/legacygraph/repository.go',
  source_sha256: '9ef94e82f4c3ea9e15ff8621d14be4a32309745ab4b4a98f8af5f3ce93987da4',
  build_sha256: 'b3f5fb78a6f28b8a05af999976dd593e345a1a15262f01848e3c92f285fd2c19' })
const seventhPausedOperation = Object.freeze({ id: 4145, tenant_id: seventhRecoveryScope.tenant_id,
  task_type: 'wiki:ingest', scope: 'knowledge_base', scope_id: seventhRecoveryScope.knowledge_base_id,
  op: 'ingest', dedup_key: seventhRecoveryScope.knowledge_id, fail_count: 5,
  payload: Object.freeze({ op: 'ingest', language: 'zh-CN', knowledge_id: seventhRecoveryScope.knowledge_id,
    recovery_dead_letter_id: 10, recovery_attempt: 6, recovery_pending_op_id: 4145, recovery_budget_version: 1 }) })
const seventhReadProgress = Object.freeze({ stage: 'candidates', status: 'reading', version: 'wiki-full-read-v1',
  source_runes: 227094, total_windows: 7, stage_complete: false, processed_runes: 32750,
  completed_windows: 1, evidence_verified: false, source_windows_complete: false })
const sha = value => crypto.createHash('sha256').update(value).digest('hex')
const hash = (value, message) => assert.match(value || '', /^[a-f0-9]{64}$/, message)

function validateSeventhRecoveryReview(review, now = Date.now()) {
  assert.equal(review?.max_attempt, 7, 'Seventh recovery requires its own review')
  for (const [key, value] of Object.entries(seventhRecoveryScope)) assert.equal(review[key], value, `Seventh recovery scope mismatch: ${key}`)
  for (const [key, value] of Object.entries({ previous_attempt: 6, previous_pending_op_id: 4145,
    previous_error_code: 'EXTRACT_FAILED', budget_version: 1, public_gates_passed: true })) {
    assert.equal(review[key], value, `Seventh recovery review mismatch: ${key}`)
  }
  assert.ok(Number.isSafeInteger(review.max_provider_requests) && review.max_provider_requests >= 1 && review.max_provider_requests <= 1000, 'Seventh recovery request limit must be 1..1000')
  const start = Date.parse(review.budget_started_at), deadline = Date.parse(review.deadline_at)
  assert.ok(Number.isFinite(start) && start <= now && deadline > start && deadline - start <= 120 * 60000, 'Seventh recovery needs a fixed duration of at most 120 minutes')
  assert.match(review.fix_release || '', /^public-\d{8}-\d{6}$/)
  assert.ok(review.fix_release > seventhPins.baseline_release, 'Seventh recovery requires the newly published source identity correction')
  assert.match(review.api_image_id || '', /^sha256:[a-f0-9]{64}$/)
  assert.ok(![seventhPins.baseline_image, seventhPins.previous_image].includes(review.api_image_id), 'Seventh recovery cannot use a pre-correction image')
  const candidate = review.candidate_diagnostic
  assert.equal(candidate?.kind, seventhPins.kind, 'Seventh recovery requires fresh source identity correction evidence')
  assert.match(candidate.run_id || '', /^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/)
  for (const key of ['evidence_sha256', 'source_tree_hash', 'binary_sha256', 'build_manifest_sha256']) hash(candidate[key], `Missing correction ${key}`)
  assert.notEqual(candidate.source_tree_hash, seventhPins.previous_source_tree_hash, 'Old replay source cannot prove the new correction')
  assert.notEqual(candidate.binary_sha256, seventhPins.previous_binary_sha256, 'Old binary cannot prove the new correction')
  assert.equal(candidate.semantic_reviewed, true, 'Source identity correction requires separate semantic review')
}

function validateSeventhRecovery(source, previous, review) {
  validateSeventhRecoveryReview(review)
  for (const [key, value] of Object.entries(seventhRecoveryScope)) {
    assert.equal(source[key === 'dead_letter_id' ? 'id' : key], value, `Seventh recovery source mismatch: ${key}`)
  }
  for (const [key, value] of Object.entries({ attempt_number: 6, pending_op_id: 4145, recovery_status: 'stopped_budget',
    error_code: 'EXTRACT_FAILED', span_status: 'failed', new_failures: 0, pending: false, pending_finalize: 0 })) {
    assert.equal(previous?.[key], value, `Seventh recovery predecessor mismatch: ${key}`)
  }
  assert.equal(Date.parse(previous.queued_at), Date.parse(seventhPins.previous_queued_at), 'Preceding receipt time changed')
  const budget = previous.recovery_budget
  for (const [key, value] of Object.entries({ ...seventhRecoveryScope, attempt_number: 6, pending_op_id: 4145,
    status: 'stopped_budget', stop_reason: 'phase_failed', last_phase: 'wiki_candidate_slug', reserved_provider_requests: 3,
    reviewed_release: seventhPins.previous_release, reviewed_api_image: seventhPins.previous_image })) {
    assert.equal(budget?.[key], value, `Seventh recovery preceding budget mismatch: ${key}`)
  }
  assert.equal(typeof budget.paused_payload, 'string', 'Preceding paused operation is missing')
  const paused = JSON.parse(budget.paused_payload)
  assert.ok(Array.isArray(paused) && paused.length === 1, 'Expected exactly one preceding paused operation')
  for (const [key, value] of Object.entries(seventhPausedOperation)) {
    if (key === 'payload') {
      for (const [field, expected] of Object.entries(value)) assert.equal(paused[0]?.payload?.[field], expected, `Preceding paused payload changed: ${field}`)
    } else assert.equal(paused[0]?.[key], value, `Preceding paused operation changed: ${key}`)
  }
  const progress = previous.read_progress?.candidates
  assert.equal(Object.keys(progress || {}).length, Object.keys(seventhReadProgress).length, 'Preceding source reading checkpoint changed')
  for (const [key, value] of Object.entries(seventhReadProgress)) assert.equal(progress?.[key], value, `Preceding source reading checkpoint changed: ${key}`)
}

function validateSeventhCorrectionEvidence(review, bytes, sourceTreeHash, binarySHA, testBytes, semanticBytes, buildManifestBytes, frozenBinarySHA) {
  validateSeventhRecoveryReview(review)
  const candidate = review.candidate_diagnostic
  assert.equal(sha(bytes), candidate.evidence_sha256, 'Correction evidence changed after review')
  const evidence = JSON.parse(bytes)
  for (const key of ['kind', 'run_id', 'source_tree_hash', 'binary_sha256', 'build_manifest_sha256']) assert.equal(evidence[key], candidate[key], `Correction evidence mismatch: ${key}`)
  assert.equal(sourceTreeHash, evidence.source_tree_hash, 'Current source differs from the tested correction')
  assert.equal(binarySHA, evidence.binary_sha256, 'Running binary differs from the tested correction build')
  assert.equal(frozenBinarySHA, evidence.binary_sha256, 'Frozen binary differs from the reviewed correction build')
  assert.equal(sha(buildManifestBytes), evidence.build_manifest_sha256, 'Frozen build manifest changed after review')
  const build = JSON.parse(buildManifestBytes)
  for (const key of ['source_tree_hash', 'binary_sha256', 'fix_release', 'api_image_id', 'regression_tests_sha256']) assert.equal(build[key], evidence[key], `Frozen build mismatch: ${key}`)
  assert.equal(build.source_kind, 'frozen_published_candidate', 'Recovery requires the tested frozen source')
  for (const [key, value] of Object.entries(seventhGraphDifference)) assert.equal(build.baseline_graph_difference?.[key], value, `Unreviewed frozen source difference: ${key}`)
  for (const [key, value] of Object.entries({ status: 'passed', model_calls: 0, production_writes: 0, prior_evidence_preserved: true,
    fix_release: review.fix_release, api_image_id: review.api_image_id })) assert.equal(evidence[key], value, `Correction evidence mismatch: ${key}`)
  const start = Date.parse(evidence.started_at), end = Date.parse(evidence.completed_at), published = Date.parse(review.published_at)
  assert.ok(start > Date.parse(seventhPins.baseline_published_at) && end >= start && published > end && published <= Date.now(), 'Correction tests must be fresh and precede publication')
  assert.equal(sha(testBytes), evidence.regression_tests_sha256, 'Correction regression output changed')
  assert.equal(sha(semanticBytes), evidence.semantic_review_sha256, 'Correction semantic review changed')
  const events = String(testBytes).trim().split('\n').map(line => JSON.parse(line))
  assert.ok(events.length > 0, 'Correction test output is empty')
  for (const event of events) {
    assert.ok(typeof event.Package === 'string' && event.Package.startsWith('github.com/Tencent/WeKnora/'), 'Correction test package changed')
    assert.ok(Date.parse(event.Time) >= start && Date.parse(event.Time) <= end, 'Correction test event is outside the fresh run')
    assert.notEqual(event.Action, 'fail', 'Correction regression failed')
  }
  for (const name of seventhRequiredTests) {
    const runs = events.filter(event => event.Package === seventhPins.test_package && event.Test === name && event.Action === 'run')
    const ends = events.filter(event => event.Package === seventhPins.test_package && event.Test === name && ['pass', 'skip', 'fail'].includes(event.Action))
    assert.ok(runs.length === 1 && ends.length === 1 && ends[0].Action === 'pass' && Date.parse(ends[0].Time) >= Date.parse(runs[0].Time), `Fresh correction regression did not pass: ${name}`)
  }
  assert.ok(events.some(event => event.Package === seventhPins.test_package && !event.Test && event.Action === 'pass'), 'Correction package did not pass')
  const semantic = JSON.parse(semanticBytes)
  for (const key of ['kind', 'run_id', 'source_tree_hash', 'binary_sha256', 'regression_tests_sha256']) assert.equal(semantic[key], evidence[key], `Semantic review mismatch: ${key}`)
  for (const key of ['approved', 'candidate_count_preserved', 'aliases_not_removed', 'no_extra_retry', 'prior_evidence_preserved']) assert.equal(semantic[key], true, `Semantic review did not confirm ${key}`)
  assert.ok(typeof semantic.reviewed_by === 'string' && semantic.reviewed_by.trim().length > 0, 'Semantic reviewer is required')
  assert.ok(typeof semantic.notes === 'string' && semantic.notes.trim().length >= 20, 'Concrete semantic review notes are required')
  assert.ok(Date.parse(semantic.reviewed_at) >= end && Date.parse(semantic.reviewed_at) < published, 'Semantic review must follow tests and precede publication')
  return evidence
}

function verifySeventhBuildFiles(runtimeDirectory) {
  const buildDirectory = path.join(runtimeDirectory, seventhPins.build_directory)
  const buildManifestBytes = fs.readFileSync(path.join(buildDirectory, 'build-manifest.json'))
  const build = JSON.parse(buildManifestBytes)
  const sourceManifest = fs.readFileSync(path.join(buildDirectory, 'source-manifest.json'))
  assert.equal(sha(sourceManifest), build.source_manifest_sha256, 'Frozen source manifest changed')
  const files = JSON.parse(sourceManifest)
  assert.ok(Array.isArray(files) && files.length > 0, 'Frozen source manifest is empty')
  const seen = new Set()
  for (const file of files) {
    assert.ok(typeof file.path === 'string' && !path.isAbsolute(file.path) && !file.path.split('/').includes('..') && !seen.has(file.path), 'Invalid frozen source path')
    seen.add(file.path)
    const frozen = path.join(buildDirectory, 'source', file.path)
    const live = path.join(runtimeDirectory, 'src', file.path)
    assert.ok(fs.lstatSync(frozen).isFile() && fs.lstatSync(live).isFile(), 'Frozen source cannot contain symlinks')
    assert.equal(sha(fs.readFileSync(frozen)), file.build_sha256, 'Frozen build source changed')
    assert.equal(sha(fs.readFileSync(live)), file.source_sha256, 'Tested live source changed')
    if (file.path === seventhGraphDifference.path) {
      for (const [key, value] of Object.entries(seventhGraphDifference)) assert.equal(file[key], value, `Unreviewed graph difference: ${key}`)
    } else assert.equal(file.source_sha256, file.build_sha256, 'Unreviewed live/build source difference')
  }
  assert.ok(seen.has(seventhGraphDifference.path), 'Frozen graph difference missing')
  for (const file of ['go.mod', 'go.sum', 'internal/application/service/wiki_source_identity_repair.go', 'internal/application/service/wiki_source_identity_repair_test.go', 'internal/application/service/wiki_structured_output.go']) assert.ok(seen.has(file), 'Correction source is missing from the build manifest')
  return { buildManifestBytes, sourceTreeHash: candidateSourceTreeHash(path.join(buildDirectory, 'source')),
    frozenBinarySHA: sha(fs.readFileSync(path.join(buildDirectory, 'WeKnora'))) }
}

function seventhRecoveryEnqueueSQL(review, table, literal) {
  validateSeventhRecoveryReview(review)
  assert.equal(table, 'wiki_dead_letter_recoveries')
  return `AND d.id=10 AND d.tenant_id=10059 AND d.fail_count=6
    AND ${review.max_provider_requests} BETWEEN 1 AND 1000
    AND ${literal(review.budget_started_at)}::timestamptz<=now()
    AND ${literal(review.deadline_at)}::timestamptz>${literal(review.budget_started_at)}::timestamptz
    AND ${literal(review.deadline_at)}::timestamptz<=${literal(review.budget_started_at)}::timestamptz+interval '120 minutes'
    AND EXISTS (SELECT 1 FROM ${table} p JOIN wiki_recovery_budgets b
      ON b.tenant_id=p.tenant_id AND b.dead_letter_id=p.dead_letter_id AND b.attempt_number=p.attempt_number AND b.pending_op_id=p.pending_op_id
      WHERE p.tenant_id=d.tenant_id AND p.dead_letter_id=d.id AND p.attempt_number=6 AND p.pending_op_id=4145
        AND p.queued_at=${literal(seventhPins.previous_queued_at)}::timestamptz
        AND p.knowledge_id=d.related_id AND p.knowledge_base_id=d.scope_id AND p.model_id=k.wiki_config->>'synthesis_model_id'
        AND b.status='stopped_budget' AND b.stop_reason='phase_failed' AND b.last_phase='wiki_candidate_slug' AND b.reserved_provider_requests=3
        AND b.knowledge_id=d.related_id AND b.knowledge_base_id=d.scope_id AND b.model_id=k.wiki_config->>'synthesis_model_id'
        AND b.embedding_model_id=k.embedding_model_id AND b.source_fingerprint=${literal(review.source_fingerprint)} AND b.model_fingerprint=${literal(review.model_fingerprint)}
        AND b.reviewed_release=${literal(seventhPins.previous_release)} AND b.reviewed_api_image=${literal(seventhPins.previous_image)}
        AND jsonb_typeof(b.paused_payload::jsonb)='array' AND jsonb_array_length(b.paused_payload::jsonb)=1
        AND b.paused_payload::jsonb @> ${literal(JSON.stringify([seventhPausedOperation]))}::jsonb
        AND NOT EXISTS (SELECT 1 FROM task_dead_letters failure WHERE failure.tenant_id=p.tenant_id AND failure.task_type='wiki:ingest'
          AND failure.scope_id=p.knowledge_base_id AND failure.related_id=p.knowledge_id AND failure.id>p.dead_letter_highwater)
        AND (SELECT span.status='failed' AND span.error_code='EXTRACT_FAILED' FROM knowledge_processing_spans span
          WHERE span.knowledge_id=p.knowledge_id AND span.name='postprocess.wiki' AND span.started_at>=p.queued_at
          ORDER BY span.started_at DESC,span.id DESC LIMIT 1)
        AND (SELECT checkpoint.fingerprint=${literal(seventhPins.checkpoint_fingerprint)} AND checkpoint.payload::jsonb=${literal(JSON.stringify(seventhReadProgress))}::jsonb
          FROM wiki_ingest_checkpoints checkpoint WHERE checkpoint.tenant_id=p.tenant_id AND checkpoint.knowledge_base_id=p.knowledge_base_id
            AND checkpoint.knowledge_id=p.knowledge_id AND checkpoint.stage='read_progress' AND checkpoint.item_key='candidates' AND checkpoint.updated_at>=p.queued_at
          ORDER BY checkpoint.updated_at DESC,checkpoint.fingerprint LIMIT 1))
    AND NOT EXISTS (SELECT 1 FROM ${table} later WHERE later.tenant_id=d.tenant_id AND later.dead_letter_id=d.id AND later.attempt_number>6)`
}

module.exports = { seventhRecoveryScope, seventhPins, seventhRequiredTests, seventhPausedOperation, seventhReadProgress, seventhGraphDifference,
  validateSeventhRecoveryReview, validateSeventhRecovery, validateSeventhCorrectionEvidence, verifySeventhBuildFiles, seventhRecoveryEnqueueSQL }