import assert from 'node:assert/strict'
import crypto from 'node:crypto'
import fs from 'node:fs'
import os from 'node:os'
import path from 'node:path'
import test from 'node:test'

import { activateRelease, verifyReleaseBundle } from '../server/release-broadcast/operator.mjs'
import { loadRuntimeState } from '../server/release-broadcast/server.mjs'

const sha256 = (bytes) => crypto.createHash('sha256').update(bytes).digest('hex')
const writeJson = (file, value) => fs.writeFileSync(file, `${JSON.stringify(value, null, 2)}\n`, { mode: 0o600 })

function buildOperatorFixture() {
  const fixtureRoot = fs.mkdtempSync(path.join(os.tmpdir(), 'hololake-release-operator-fixture-'))
  const source = path.join(fixtureRoot, 'source')
  const approvals = path.join(fixtureRoot, 'approvals')
  const stateRoot = path.join(fixtureRoot, 'state')
  for (const directory of [source, approvals, stateRoot]) fs.mkdirSync(directory, { mode: 0o700 })
  const packageName = 'HoloLake.app.tar.gz'
  const packageBytes = Buffer.from('signed-notarized-updater-package')
  const sourceCommit = '2'.repeat(40)
  fs.writeFileSync(path.join(source, packageName), packageBytes, { mode: 0o600 })
  writeJson(path.join(source, 'HOLOLAKE-CODESIGN.json'), {
    schema: 'hololake.platform-code-signature-receipt/v1',
    state: 'DEVELOPER_ID_SIGNATURE_STRICT_AND_GATEKEEPER_ACCEPTED',
    sourceCommit,
  })
  writeJson(path.join(source, 'HOLOLAKE-NOTARIZATION.json'), {
    schema: 'hololake.apple-notarization-receipt/v1',
    state: 'APPLE_NOTARIZATION_ACCEPTED_AND_STAPLED',
    sourceCommit,
  })
  const broadcast = {
    schema: 'hololake.release-broadcast/v1',
    releaseId: 'GH-HOLOLAKE-RELEASE-0.2.0',
    version: '0.2.0',
    pub_date: '2026-08-13T10:00:00.000Z',
    notes: 'Signed release',
    platforms: {
      'darwin-aarch64': {
        url: `https://guanghulab.com/hololake/releases/0.2.0/${packageName}`,
        signature: 'trusted-updater-signature',
        size: packageBytes.length,
        sha256: sha256(packageBytes),
        platformCodeSignatureReceipt: 'HOLOLAKE-CODESIGN',
        notarizationReceipt: 'HOLOLAKE-NOTARIZATION',
      },
    },
    hololake: {
      features: ['Stage one'],
      fixes: [],
      compatibility: { minimumVersion: '0.1.0', dataMigrationRequired: false },
      restart: { required: true, automaticAllowed: false },
      rollback: { supported: true, healthReceiptRequired: true, previousVersion: '0.1.0' },
    },
  }
  const broadcastPath = path.join(source, 'latest.json')
  writeJson(broadcastPath, broadcast)
  const broadcastSha256 = sha256(fs.readFileSync(broadcastPath))
  writeJson(path.join(source, 'pipeline-receipt.json'), {
    schema: 'hololake.signed-release-pipeline-receipt/v1',
    state: 'SIGNED_NOTARIZED_RELEASE_BROADCAST_READY_FOR_JD_CONTROLLER_UPLOAD',
    sourceCommit,
    broadcastSha256,
    automaticUpload: false,
    automaticActivation: false,
  })
  const approval = path.join(approvals, 'approval.json')
  writeJson(approval, {
    schema: 'hololake.release-broadcast-human-approval/v1',
    state: 'HUMAN_APPROVED_EXACT_SIGNED_NOTARIZED_RELEASE',
    approvalId: 'GH-HUMAN-RELEASE-APPROVAL-002',
    releaseId: broadcast.releaseId,
    version: broadcast.version,
    broadcastSha256,
  })
  return {
    fixtureRoot,
    source,
    approval,
    stateRoot,
    expected: { releaseId: broadcast.releaseId, version: broadcast.version, sourceCommit, broadcastSha256 },
  }
}

test('verify reconstructs and validates an exact private candidate without mutating state', () => {
  const fixture = buildOperatorFixture()
  try {
    const result = verifyReleaseBundle(fixture.source, fixture.approval)
    assert.equal(result.state, 'EXACT_SIGNED_NOTARIZED_HUMAN_APPROVED_BUNDLE_VERIFIED')
    assert.equal(result.broadcastSha256, fixture.expected.broadcastSha256)
    assert.equal(result.artifacts.some((artifact) => artifact.name === 'HoloLake.app.tar.gz'), true)
    assert.deepEqual(fs.readdirSync(fixture.stateRoot), [])
  } finally {
    fs.rmSync(fixture.fixtureRoot, { recursive: true, force: true })
  }
})

test('activation repeats expected facts, commits atomically, and still requires explicit restart', () => {
  const fixture = buildOperatorFixture()
  try {
    const receipt = activateRelease({
      sourceDirectory: fixture.source,
      humanApprovalPath: fixture.approval,
      stateRoot: fixture.stateRoot,
      expected: fixture.expected,
      enforceRootOwner: false,
    })
    assert.equal(receipt.state, 'ACTIVATED_EXPLICIT_SERVICE_RESTART_REQUIRED')
    assert.equal(receipt.automaticUpload, false)
    assert.equal(receipt.automaticActivation, false)
    assert.equal(receipt.automaticRestart, false)
    assert.equal(loadRuntimeState(fixture.stateRoot).state, 'READY_SIGNED_NOTARIZED_BROADCAST')
    assert.equal(fs.existsSync(path.join(fixture.stateRoot, '.operator-lock')), false)
  } finally {
    fs.rmSync(fixture.fixtureRoot, { recursive: true, force: true })
  }
})

test('expected-fact mismatch performs no activation or release staging', () => {
  const fixture = buildOperatorFixture()
  try {
    assert.throws(() => activateRelease({
      sourceDirectory: fixture.source,
      humanApprovalPath: fixture.approval,
      stateRoot: fixture.stateRoot,
      expected: { ...fixture.expected, broadcastSha256: '3'.repeat(64) },
      enforceRootOwner: false,
    }), /HOLOLAKE_RELEASE_OPERATOR_EXPECTED_BROADCAST_SHA256_MISMATCH/)
    assert.deepEqual(fs.readdirSync(fixture.stateRoot), [])
  } finally {
    fs.rmSync(fixture.fixtureRoot, { recursive: true, force: true })
  }
})

test('human approval cannot be reused after broadcast bytes change', () => {
  const fixture = buildOperatorFixture()
  try {
    const latestPath = path.join(fixture.source, 'latest.json')
    const latest = JSON.parse(fs.readFileSync(latestPath, 'utf8'))
    latest.notes = 'Changed after approval'
    writeJson(latestPath, latest)
    assert.throws(
      () => verifyReleaseBundle(fixture.source, fixture.approval),
      /HOLOLAKE_RELEASE_OPERATOR_PIPELINE_RECEIPT_INVALID/,
    )
  } finally {
    fs.rmSync(fixture.fixtureRoot, { recursive: true, force: true })
  }
})

test('symlinked package inputs are rejected instead of followed', () => {
  const fixture = buildOperatorFixture()
  try {
    const packagePath = path.join(fixture.source, 'HoloLake.app.tar.gz')
    const moved = path.join(fixture.fixtureRoot, 'moved-package')
    fs.renameSync(packagePath, moved)
    fs.symlinkSync(moved, packagePath)
    assert.throws(
      () => verifyReleaseBundle(fixture.source, fixture.approval),
      /HOLOLAKE_RELEASE_OPERATOR_FILE_INVALID/,
    )
  } finally {
    fs.rmSync(fixture.fixtureRoot, { recursive: true, force: true })
  }
})