var test = require('tap').test
var crypto = require('crypto')
var fs = require('fs')

var server = require('./lib/server.js')
var common = require('./lib/common.js')
var client = common.freshClient()

function nop () {}

var URI = 'http://localhost:1337/'
var USERNAME = 'username'
var PASSWORD = '%1234@asdf%'
var EMAIL = 'i@izs.me'
var METADATA = require('../package.json')
var ACCESS = 'public'
// not really a tarball, but doesn't matter
var BODY_PATH = require.resolve('../package.json')
var BODY = fs.createReadStream(BODY_PATH)
var AUTH = {
  username: USERNAME,
  password: PASSWORD,
  email: EMAIL
}
var PARAMS = {
  metadata: METADATA,
  access: ACCESS,
  body: BODY,
  auth: AUTH
}

test('publish call contract', function (t) {
  t.throws(function () {
    client.publish(undefined, PARAMS, nop)
  }, 'requires a URI')

  t.throws(function () {
    client.publish([], PARAMS, nop)
  }, 'requires URI to be a string')

  t.throws(function () {
    client.publish(URI, undefined, nop)
  }, 'requires params object')

  t.throws(function () {
    client.publish(URI, '', nop)
  }, 'params must be object')

  t.throws(function () {
    client.publish(URI, PARAMS, undefined)
  }, 'requires callback')

  t.throws(function () {
    client.publish(URI, PARAMS, 'callback')
  }, 'callback must be function')

  t.throws(
    function () {
      var params = {
        access: ACCESS,
        body: BODY,
        auth: AUTH
      }
      client.publish(URI, params, nop)
    },
    { name: 'AssertionError', message: 'must pass package metadata to publish' },
    'params must include metadata for package'
  )

  t.throws(
    function () {
      var params = {
        metadata: METADATA,
        access: ACCESS,
        auth: AUTH
      }
      client.publish(URI, params, nop)
    },
    { name: 'AssertionError', message: 'must pass package body to publish' },
    'params must include body of package to publish'
  )

  t.throws(
    function () {
      var params = {
        metadata: METADATA,
        access: ACCESS,
        body: BODY
      }
      client.publish(URI, params, nop)
    },
    { name: 'AssertionError', message: 'must pass auth to publish' },
    'params must include auth'
  )

  t.throws(
    function () {
      var params = {
        metadata: -1,
        access: ACCESS,
        body: BODY,
        auth: AUTH
      }
      client.publish(URI, params, nop)
    },
    { name: 'AssertionError', message: 'must pass package metadata to publish' },
    'metadata must be object'
  )

  t.throws(
    function () {
      var params = {
        metadata: METADATA,
        access: 'hamchunx',
        body: BODY,
        auth: AUTH
      }
      client.publish(URI, params, nop)
    },
    {
      name: 'AssertionError',
      message: "if present, access level must be either 'public' or 'restricted'"
    },
    "access level must be 'public' or 'restricted'"
  )

  t.throws(
    function () {
      var params = {
        metadata: METADATA,
        access: ACCESS,
        body: -1,
        auth: AUTH
      }
      client.publish(URI, params, nop)
    },
    {
      name: 'AssertionError',
      message: 'package body passed to publish must be a stream'
    },
    'body must be a Stream'
  )

  t.test('malformed semver in publish', function (t) {
    var metadata = JSON.parse(JSON.stringify(METADATA))
    metadata.version = '%!@#$'
    var params = {
      metadata: metadata,
      access: ACCESS,
      message: BODY,
      auth: AUTH
    }
    client.publish(URI, params, function (err) {
      t.equal(
        err && err.message,
        'invalid semver: %!@#$',
        'got expected semver validation failure'
      )
      t.end()
    })
  })

  t.end()
})

test('publish', function (t) {
  var pd = fs.readFileSync(BODY_PATH)

  server.expect('/npm-registry-client', function (req, res) {
    t.equal(req.method, 'PUT')
    var b = ''
    req.setEncoding('utf8')
    req.on('data', function (d) {
      b += d
    })

    req.on('end', function () {
      var o = JSON.parse(b)
      t.equal(o._id, 'npm-registry-client')
      t.equal(o['dist-tags'].latest, METADATA.version)
      t.equal(o.access, ACCESS)
      t.has(o.versions[METADATA.version], METADATA)
      t.same(o.maintainers, [{ name: 'username', email: 'i@izs.me' }])
      t.same(o.maintainers, o.versions[METADATA.version].maintainers)

      var att = o._attachments[METADATA.name + '-' + METADATA.version + '.tgz']
      t.same(att.data, pd.toString('base64'))

      var hash = crypto.createHash('sha1').update(pd).digest('hex')
      t.equal(o.versions[METADATA.version].dist.shasum, hash)

      res.statusCode = 201
      res.json({ created: true })
    })
  })

  client.publish(URI, PARAMS, function (er, data) {
    if (er) throw er

    t.deepEqual(data, { created: true })
    server.close()
    t.end()
  })
})