'use strict'

const tap = require('tap')
const { BerReader, BerWriter } = require('@ldapjs/asn1')
const controls = require('.')

tap.test('#getControl', t => {
  t.test('requires a BER to parse', async t => {
    try {
      controls.getControl()
      t.fail('should throw exception')
    } catch (error) {
      t.match(error, /ber must be provided/)
    }
  })

  t.test('returns null for empty BER', async t => {
    const result = controls.getControl(new BerReader(Buffer.alloc(0)))
    t.equal(result, null)
  })

  t.test('parses a BER (control)', async t => {
    const ber = new BerWriter()
    ber.startSequence()
    ber.writeString('2.16.840.1.113730.3.4.2')
    ber.writeBoolean(true)
    ber.writeString('foo')
    ber.endSequence()

    const control = controls.getControl(new BerReader(ber.buffer))

    t.ok(control)
    t.equal(control.type, '2.16.840.1.113730.3.4.2')
    t.ok(control.criticality)
    t.equal(control.value.toString('utf8'), 'foo')
    t.end()
  })

  t.test('parses BER with no value', function (t) {
    const ber = new BerWriter()
    ber.startSequence()
    ber.writeString('2.16.840.1.113730.3.4.2')
    ber.endSequence()

    const control = controls.getControl(new BerReader(ber.buffer))

    t.ok(control)
    t.equal(control.type, '2.16.840.1.113730.3.4.2')
    t.equal(control.criticality, false)
    t.notOk(control.value, null)
    t.end()
  })

  t.test('returns a EntryChangeNotificationControl', async t => {
    const ecnc = new controls.EntryChangeNotificationControl({
      type: controls.EntryChangeNotificationControl.OID,
      criticality: true,
      value: {
        changeType: 8,
        previousDN: 'cn=foobarbazcar',
        changeNumber: 123456789
      }
    })

    const ber = new BerWriter()
    ecnc.toBer(ber)

    const c = controls.getControl(new BerReader(ber.buffer))
    t.ok(c)
    t.equal(c.type, controls.EntryChangeNotificationControl.OID)
    t.ok(c.criticality)
    t.equal(c.value.changeType, 8)
    t.equal(c.value.previousDN, 'cn=foobarbazcar')
    t.equal(c.value.changeNumber, 123456789)
  })

  t.test('returns a PagedResultsControl', async t => {
    const prc = new controls.PagedResultsControl({
      type: controls.PagedResultsControl.OID,
      criticality: true,
      value: {
        size: 20,
        cookie: Buffer.alloc(0)
      }
    })

    const ber = new BerWriter()
    prc.toBer(ber)

    const c = controls.getControl(new BerReader(ber.buffer))
    t.ok(c)
    t.equal(c.type, controls.PagedResultsControl.OID)
    t.ok(c.criticality)
    t.equal(c.value.size, 20)
    t.equal(Buffer.compare(c.value.cookie, Buffer.alloc(0)), 0)
  })

  t.test('returns a PasswordPolicyControl', async t => {
    const ppc = new controls.PasswordPolicyControl({
      type: controls.PasswordPolicyControl.OID,
      criticality: true,
      value: {
        error: 1,
        timeBeforeExpiration: 2
      }
    })

    const ber = new BerWriter()
    ppc.toBer(ber)

    const c = controls.getControl(new BerReader(ber.buffer))
    t.ok(c)
    t.equal(c.type, controls.PasswordPolicyControl.OID)
    t.ok(c.criticality)
    t.equal(c.value.error, 1)
    t.equal(c.value.timeBeforeExpiration, 2)
  })

  t.test('returns a PersistentSearchControl', async t => {
    const buf = Buffer.from([
      0x30, 0x26, 0x04, 0x17, 0x32, 0x2e, 0x31, 0x36, 0x2e, 0x38, 0x34, 0x30,
      0x2e, 0x31, 0x2e, 0x31, 0x31, 0x33, 0x37, 0x33, 0x30, 0x2e, 0x33, 0x2e,
      0x34, 0x2e, 0x33, 0x04, 0x0b, 0x30, 0x09, 0x02, 0x01, 0x0f, 0x01, 0x01,
      0xff, 0x01, 0x01, 0xff])

    const ber = new BerReader(buf)
    const psc = controls.getControl(ber)
    t.ok(psc)
    t.equal(psc.type, controls.PersistentSearchControl.OID)
    t.equal(psc.criticality, false)
    t.equal(psc.value.changeTypes, 15)
    t.equal(psc.value.changesOnly, true)
    t.equal(psc.value.returnECs, true)
  })

  t.test('returns a ServerSideSortingRequestControl', async t => {
    const sssc = new controls.ServerSideSortingRequestControl()
    const ber = new BerWriter()
    sssc.toBer(ber)

    const c = controls.getControl(new BerReader(ber.buffer))
    t.ok(c)
    t.equal(c.type, controls.ServerSideSortingRequestControl.OID)
    t.equal(c.value.length, 0)
  })

  t.test('returns a ServerSideSortingResponseControl', async t => {
    const sssc = new controls.ServerSideSortingResponseControl()
    const ber = new BerWriter()
    sssc.toBer(ber)

    const c = controls.getControl(new BerReader(ber.buffer))
    t.ok(c)
    t.equal(c.type, controls.ServerSideSortingResponseControl.OID)
    t.equal(c.criticality, false)
    t.notOk(c.value.result)
    t.notOk(c.value.failedAttribute)
  })

  t.end()
})