const t = require('tap')
const localeCompare = require('@isaacs/string-locale-compare')('en')
const AuditReport = require('../lib/audit-report.js')
const { auditToBulk } = AuditReport
const Node = require('../lib/node.js')
const Arborist = require('../')

const {
  start,
  stop,
  registry,
  auditResponse,
  failAudit,
  advisoryBulkResponse,
} = require('./fixtures/registry-mocks/server.js')
t.before(start)
t.teardown(stop)

const { resolve } = require('path')
const fixtures = resolve(__dirname, 'fixtures')

const cache = t.testdir()
const newArb = (path, opts = {}) =>
  new Arborist({ path, registry, cache, ...opts })

const sortReport = report => {
  const entries = Object.entries(report.vulnerabilities)
  const vulns = entries.sort(([a], [b]) => localeCompare(a, b))
    .map(([name, vuln]) => [
      name,
      {
        ...vuln,
        via: (vuln.via || []).sort((a, b) =>
          localeCompare(String(a.source || a), String(b.source || b))),
        effects: (vuln.effects || []).sort(localeCompare),
      },
    ])
  report.vulnerabilities = vulns.reduce((set, [k, v]) => {
    set[k] = v
    return set
  }, {})
}

t.test('all severity levels', async t => {
  const path = resolve(fixtures, 'audit-all-severities')
  const auditFile = resolve(path, 'audit.json')
  t.teardown(auditResponse(auditFile))
  const arb = newArb(path)

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.matchSnapshot(JSON.stringify(report, 0, 2), 'json version')
  t.equal(report.topVulns.size, 2)
})

t.test('vulnerable dep not from registry', async t => {
  const path = resolve(fixtures, 'minimist-git-dep')
  const auditFile = resolve(path, 'audit.json')
  t.teardown(auditResponse(auditFile))
  const arb = newArb(path)

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.matchSnapshot(JSON.stringify(report, 0, 2), 'json version')
  t.equal(report.has('minimist'), true)
  t.equal(report.topVulns.has('minimist'), true)
  t.equal(report.isVulnerable(tree.children.get('minimist')), true)
})

t.test('metavuln where dep is not a registry dep', async t => {
  const path = resolve(fixtures, 'minimist-git-metadep')
  const auditFile = resolve(path, 'audit.json')
  t.teardown(auditResponse(auditFile))
  const arb = newArb(path)

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.matchSnapshot(JSON.stringify(report, 0, 2), 'json version')

  t.equal(report.has('@isaacs/minimist-git-dep'), true)
  t.equal(report.has('minimist'), true)
  t.equal(report.topVulns.has('@isaacs/minimist-git-dep'), true)
})

t.test('metavuln where a dep is not on the registry at all', async t => {
  const path = resolve(fixtures, 'audit-missing-packument')
  const auditFile = resolve(path, 'audit.json')
  t.teardown(auditResponse(auditFile))
  const arb = newArb(path)

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.matchSnapshot(JSON.stringify(report, 0, 2), 'json version')
  t.equal(report.topVulns.size, 1)
})

t.test('get advisory about node not in tree', async t => {
  // this should never happen, but if it does, we're prepared for it
  const path = resolve(fixtures, 'audit-nyc-mkdirp')
  const auditFile = resolve(path, 'audit.json')
  t.teardown(auditResponse(auditFile))

  const arb = newArb(path)

  const tree = await arb.loadVirtual()
  tree.children.get('mkdirp').parent = null
  tree.children.get('nyc').parent = null
  tree.children.get('minimist').parent = null
  new Node({
    parent: tree,
    path: resolve(path, 'node_modules/fooo'),
    pkg: { name: 'fooo', version: '1.2.3' },
  })
  tree.package = { dependencies: {
    fooo: '',
  } }

  const report = await AuditReport.load(tree, arb.options)
  // just a gut-check that the registry server is actually doing stuff
  t.match(report.report, auditToBulk(require(auditFile)), 'got expected response')
  t.equal(report.topVulns.size, 0, 'one top node found vulnerable')
  t.equal(report.size, 0, 'no vulns that were relevant')
  t.equal(report.get('nyc'), undefined)
  t.equal(report.get('mkdirp'), undefined)
})

t.test('unfixable, but not a semver major forced fix', async t => {
  const path = resolve(fixtures, 'mkdirp-pinned')
  const auditFile = resolve(fixtures, 'audit-nyc-mkdirp/audit.json')
  t.teardown(auditResponse(auditFile))
  const arb = newArb(path)

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.matchSnapshot(JSON.stringify(report, 0, 2), 'json version')

  t.equal(report.topVulns.size, 1)
})

t.test('audit outdated nyc and mkdirp', async t => {
  const path = resolve(fixtures, 'audit-nyc-mkdirp')
  const auditFile = resolve(path, 'audit.json')
  t.teardown(auditResponse(auditFile))

  const arb = newArb(path)

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.matchSnapshot(JSON.stringify(report, 0, 2), 'json version')

  // just a gut-check that the registry server is actually doing stuff
  t.match(report.report, auditToBulk(require(auditFile)), 'got expected response')

  t.throws(() => report.set('foo', 'bar'), {
    message: 'do not call AuditReport.set() directly',
  })

  t.equal(report.topVulns.size, 1, 'one top node found vulnerable')
  t.equal(report.get('nyc').simpleRange, '6.2.0-alpha - 13.1.0')
  t.equal(report.get('mkdirp').simpleRange, '0.4.1 - 0.5.1')
})

t.test('audit outdated nyc and mkdirp with newer endpoint', async t => {
  const path = resolve(fixtures, 'audit-nyc-mkdirp')
  const auditFile = resolve(path, 'advisory-bulk.json')
  t.teardown(advisoryBulkResponse(auditFile))

  const arb = newArb(path)

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.matchSnapshot(JSON.stringify(report, 0, 2), 'json version')

  // just a gut-check that the registry server is actually doing stuff
  t.match(report.report, require(auditFile), 'got expected response')

  t.throws(() => report.set('foo', 'bar'), {
    message: 'do not call AuditReport.set() directly',
  })

  t.equal(report.topVulns.size, 1, 'one top node found vulnerable')
  t.equal(report.get('nyc').simpleRange, '6.2.0-alpha - 13.1.0')
  t.equal(report.get('mkdirp').simpleRange, '0.4.1 - 0.5.1')
})

t.test('audit outdated nyc and mkdirp with before: option', async t => {
  const path = resolve(fixtures, 'audit-nyc-mkdirp')
  const auditFile = resolve(path, 'audit.json')
  t.teardown(auditResponse(auditFile))

  const arb = newArb(path, { before: new Date('2020-01-01') })

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.matchSnapshot(JSON.stringify(report, 0, 2), 'json version')

  // just a gut-check that the registry server is actually doing stuff
  t.match(report.report, auditToBulk(require(auditFile)), 'got expected response')

  t.equal(report.topVulns.size, 1, 'one top node found vulnerable')
  t.equal(report.get('nyc').simpleRange, '6.2.0-alpha - 13.1.0')
  t.equal(report.get('mkdirp').simpleRange, '0.4.1 - 0.5.1')
})

t.test('audit returns an error', async t => {
  const path = resolve(fixtures, 'audit-nyc-mkdirp')
  t.teardown(failAudit())

  const logs = []
  const onlog = (...msg) => {
    if (msg[0] === 'http') {
      return
    }
    logs.push(msg)
  }
  process.on('log', onlog)
  t.teardown(() => process.removeListener('log', onlog))

  const arb = newArb(path)

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.equal(report.report, null, 'did not get audit response')
  t.equal(report.size, 0, 'did not find any vulnerabilities')
  t.match(logs, [
    [
      'silly',
      'audit',
      'bulk request',
    ],
    [
      'silly',
      'audit',
      'bulk request failed',
    ],
    [
      'verbose',
      'audit error',
      report.error,
    ],
    ['silly', 'audit error', 'no audit for you'],
  ], 'logged audit failure')
  t.match(report.error, Error)
})

t.test('audit disabled by config', async t => {
  const path = resolve(fixtures, 'audit-nyc-mkdirp')

  const logs = []
  const onlog = (...msg) => logs.push(msg)
  process.on('log', onlog)
  t.teardown(() => process.removeListener('log', onlog))

  const arb = newArb(path, { audit: false })

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.equal(report.report, null, 'did not get audit response')
  t.equal(report.size, 0, 'did not find any vulnerabilities')
  t.match(logs, [], 'no logs of error')
  t.equal(report.error, null, 'no error encountered')
})

t.test('audit disabled by offline mode', async t => {
  const path = resolve(fixtures, 'audit-nyc-mkdirp')

  const logs = []
  const onlog = (...msg) => logs.push(msg)
  process.on('log', onlog)
  t.teardown(() => process.removeListener('log', onlog))

  const arb = newArb(path, { offline: true })

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.equal(report.report, null, 'did not get audit response')
  t.equal(report.size, 0, 'did not find any vulnerabilities')
  t.match(logs, [], 'no logs of error')
  t.equal(report.error, null, 'no error encountered')
})

t.test('one vulnerability', async t => {
  const path = resolve(fixtures, 'audit-one-vuln')
  const auditFile = resolve(path, 'audit.json')
  t.teardown(auditResponse(auditFile))
  const arb = newArb(path)

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.matchSnapshot(JSON.stringify(report, 0, 2), 'json version')

  t.equal(report.topVulns.size, 0)
})

t.test('a dep vuln that also has its own advisory against it', async t => {
  const path = resolve(fixtures, 'audit-dep-vuln-with-own-advisory')
  const auditFile = resolve(path, 'audit.json')
  t.teardown(auditResponse(auditFile))
  const arb = newArb(path)

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.matchSnapshot(JSON.stringify(report, 0, 2), 'json version')

  t.equal(report.topVulns.size, 0)
})

t.test('get default opts when loaded without opts', async t => {
  const ar = new AuditReport()
  t.equal(ar.tree, undefined)
  t.strictSame(ar.options, {})
})

t.test('error on audit response with no advisories object', async t => {
  const dir = t.testdir({
    'audit.json': JSON.stringify({ no: 'advisories', at: 'all' }),
  })
  const path = resolve(fixtures, 'audit-nyc-mkdirp')
  const auditFile = resolve(dir, 'audit.json')
  t.teardown(auditResponse(auditFile))

  const arb = newArb(path)

  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  t.match(report.error, {
    message: 'Invalid advisory report',
    body: JSON.stringify({ no: 'advisories', at: 'all' }),
  })
})

t.test('audit report with a lying v5 lockfile', async t => {
  // npm v5 stored the resolved dependency version in the `requires`
  // set, rather than the spec that is actually required.  As a result,
  // a dep may _appear_ to be a metavuln, but when we scan the
  // packument, it turns out that it matches no nodes, and gets deleted.
  const path = resolve(fixtures, 'eslintme')
  const arb = newArb(path)
  const auditFile = resolve(path, 'audit.json')
  t.teardown(advisoryBulkResponse(auditFile))
  const tree = await arb.loadVirtual()
  const report = await AuditReport.load(tree, arb.options)
  // also try to delete something that just very much is not present
  report.delete('eslint')
  report.delete('eslint')
  t.matchSnapshot(report.toJSON())
})

t.test('omit options', async t => {
  const path = resolve(fixtures, 'audit-omit')
  const quick = resolve(path, 'quick.json')
  // quick response doesn't change for omit args
  t.teardown(auditResponse(quick))
  const omits = [
    [],
    ['dev'],
    ['optional'],
    ['dev', 'optional'],
    ['peer'],
    ['peer', 'dev'],
    ['peer', 'dev', 'optional'], // empty
  ]
  const arb = newArb(path)
  const tree = await arb.loadVirtual()

  for (const omit of omits) {
    t.test(`omit=[${omit.join(',')}]`, async t => {
      const s = omit.map(o => `-omit${o}`).join('')
      const bulk = resolve(path, `bulk${s}.json`)
      const rmBulk = advisoryBulkResponse(bulk)
      const r1 = (await AuditReport.load(tree, { ...arb.options, omit }))
        .toJSON()
      sortReport(r1)
      rmBulk()
      t.matchSnapshot(r1, 'bulk')
      const r2 = (await AuditReport.load(tree, { ...arb.options, omit }))
        .toJSON()
      sortReport(r2)
      t.strictSame(r1, r2, 'same results')
      t.end()
    })
  }
  t.end()
})

t.test('audit when tree is empty', async t => {
  const tree = new Node({
    path: '/path/to/tree',
  })
  const auditReport = new AuditReport(tree)
  const { report } = await auditReport.run()
  t.strictSame(report, null)
})

t.test('audit when bulk report doenst have anything in it', async t => {
  const tree = new Node({
    path: '/path/to/tree',
    pkg: {
      name: 'tree',
      version: '1.2.3',
      devDependencies: { something: '1.2.3' },
    },
    children: [
      { pkg: { name: 'something', version: '1.2.3' } },
    ],
  })
  const auditReport = new AuditReport(tree, { omit: ['dev'] })
  const { report } = await auditReport.run()
  t.strictSame(report, null)
})

t.test('default severity=high, vulnerable_versions=*', async t => {
  const audit = {
    actions: [],
    advisories: {
      755: {
        findings: [
          {
            version: '1.2.3',
            paths: [
              'something',
            ],
          },
        ],
        id: 755,
        title: 'no severity or vulnerable versions',
        module_name: 'something',
        overview: 'should default severity=high, vulnerable_versions=*',
        recommendation: "don't use this thing",
        url: 'https://npmjs.com/advisories/755',
      },
    },
    muted: [],
    metadata: {
      vulnerabilities: {},
      dependencies: 1,
      devDependencies: 0,
      optionalDependencies: 0,
      totalDependencies: 1,
    },
    runId: 'just-some-unique-identifier',
  }

  const bulk = auditToBulk(audit)
  t.match(bulk, { something: [{ severity: 'high', vulnerable_versions: '*' }] })
  t.end()
})

t.test('audit supports alias deps', async t => {
  const path = resolve(fixtures, 'audit-nyc-mkdirp')
  const auditFile = resolve(path, 'advisory-bulk.json')
  t.teardown(advisoryBulkResponse(auditFile))
  const tree = new Node({
    path,
    pkg: {
      name: 'mkdirp',
      version: '0.5.0',
      dependencies: {
        novulnshereiswear: 'npm:mkdirp@*',
        mkdirp: 'npm:mkdirp@0.5.1',
      },
    },
    children: [
      {
        name: 'novulnshereiswear',
        pkg: {
          name: 'mkdirp',
          version: '0.5.1',
          dependencies: {
            minimist: '0.0.8',
          },
        },
      },
      {
        pkg: {
          name: 'mkdirp',
          version: '0.5.1',
          dependencies: {
            minimist: '0.0.8',
          },
        },
      },
      { pkg: { name: 'minimist', version: '0.0.8' } },
    ],
  })

  const report = await AuditReport.load(tree, { path, registry, cache })
  t.matchSnapshot(JSON.stringify(report, 0, 2), 'json version')
  t.equal(report.get('mkdirp').simpleRange, '0.4.1 - 0.5.1')
})

t.test('audit with filterSet limiting to only mkdirp and minimist', async t => {
  const path = resolve(fixtures, 'audit-nyc-mkdirp')
  const auditFile = resolve(path, 'advisory-bulk.json')
  t.teardown(advisoryBulkResponse(auditFile))

  const arb = newArb(path)

  const tree = await arb.loadVirtual()
  const filterSet = new Set([
    tree.children.get('mkdirp'),
    tree.children.get('minimist'),
  ])
  const options = { ...arb.options, filterSet }
  const report = await AuditReport.load(tree, options)
  t.matchSnapshot(JSON.stringify(report, 0, 2), 'json version')

  t.equal(report.topVulns.size, 0, 'no top nodes reported')
  t.equal(report.get('nyc'), undefined, 'no nyc vuln reported')
  t.equal(report.get('mkdirp').simpleRange, '0.4.1 - 0.5.1', 'mkdirp vuln reported')
})