var Buffer = require('safe-buffer').Buffer
var Client = require('../')
var common = require('./common')
var test = require('tape')
var wrtc = require('electron-webrtc')()

var wrtcReady = false
wrtc.electronDaemon.once('ready', function () {
  wrtcReady = true
})

var infoHash = '4cb67059ed6bd08362da625b3ae77f6f4a075705'
var peerId = Buffer.from('01234567890123456789')
var peerId2 = Buffer.from('12345678901234567890')
var peerId3 = Buffer.from('23456789012345678901')

function serverTest (t, serverType, serverFamily) {
  t.plan(36)

  var hostname = serverFamily === 'inet6'
    ? '[::1]'
    : '127.0.0.1'
  var clientIp = serverFamily === 'inet6'
    ? '::1'
    : '127.0.0.1'

  var opts = {
    serverType: serverType,
    peersCacheLength: 2
  }

  common.createServer(t, opts, function (server) {
    // Not using announceUrl param from `common.createServer()` since we
    // want to control IPv4 vs IPv6.
    var port = server[serverType].address().port
    var announceUrl = serverType + '://' + hostname + ':' + port + '/announce'

    var client1 = new Client({
      infoHash: infoHash,
      announce: [ announceUrl ],
      peerId: peerId,
      port: 6881,
      wrtc: wrtc
    })
    if (serverType === 'ws') common.mockWebsocketTracker(client1)

    client1.start()

    server.once('start', function () {
      t.pass('got start message from client1')
    })

    client1.once('update', function (data) {
      t.equal(data.announce, announceUrl)
      t.equal(data.complete, 0)
      t.equal(data.incomplete, 1)

      server.getSwarm(infoHash, function (err, swarm) {
        t.error(err)

        t.equal(Object.keys(server.torrents).length, 1)
        t.equal(swarm.complete, 0)
        t.equal(swarm.incomplete, 1)
        t.equal(swarm.peers.length, 1)

        var id = serverType === 'ws'
          ? peerId.toString('hex')
          : hostname + ':6881'

        var peer = swarm.peers.peek(id)
        t.equal(peer.type, serverType)
        t.equal(peer.ip, clientIp)
        t.equal(peer.peerId, peerId.toString('hex'))
        t.equal(peer.complete, false)
        if (serverType === 'ws') {
          t.equal(typeof peer.port, 'number')
          t.ok(peer.socket)
        } else {
          t.equal(peer.port, 6881)
          t.notOk(peer.socket)
        }

        client1.complete()

        client1.once('update', function (data) {
          t.equal(data.announce, announceUrl)
          t.equal(data.complete, 1)
          t.equal(data.incomplete, 0)

          client1.scrape()

          client1.once('scrape', function (data) {
            t.equal(data.announce, announceUrl)
            t.equal(data.complete, 1)
            t.equal(data.incomplete, 0)
            t.equal(typeof data.downloaded, 'number')

            var client2 = new Client({
              infoHash: infoHash,
              announce: [ announceUrl ],
              peerId: peerId2,
              port: 6882,
              wrtc: wrtc
            })
            if (serverType === 'ws') common.mockWebsocketTracker(client2)

            client2.start()

            server.once('start', function () {
              t.pass('got start message from client2')
            })

            client2.once('update', function (data) {
              t.equal(data.announce, announceUrl)
              t.equal(data.complete, 1)
              t.equal(data.incomplete, 1)

              var client3 = new Client({
                infoHash: infoHash,
                announce: [ announceUrl ],
                peerId: peerId3,
                port: 6880,
                wrtc: wrtc
              })
              if (serverType === 'ws') common.mockWebsocketTracker(client3)

              client3.start()

              server.once('start', function () {
                t.pass('got start message from client3')
              })

              client3.once('update', function (data) {
                t.equal(data.announce, announceUrl)
                t.equal(data.complete, 1)
                t.equal(data.incomplete, 2)

                client2.stop()
                client2.once('update', function (data) {
                  t.equal(data.announce, announceUrl)
                  t.equal(data.complete, 1)
                  t.equal(data.incomplete, 1)

                  client2.destroy(function () {
                    client3.stop()
                    client3.once('update', function (data) {
                      t.equal(data.announce, announceUrl)
                      t.equal(data.complete, 1)
                      t.equal(data.incomplete, 0)

                      client3.destroy(function () {
                        client1.destroy(function () {
                          server.close()
                        })
                      })
                    })
                  })
                })
              })
            })
          })
        })
      })
    })
  })
}

test('http ipv4 server', function (t) {
  serverTest(t, 'http', 'inet')
})

test('http ipv6 server', function (t) {
  serverTest(t, 'http', 'inet6')
})

test('udp server', function (t) {
  serverTest(t, 'udp', 'inet')
})

test('ws server', function (t) {
  if (wrtcReady) {
    runTest()
  } else {
    wrtc.electronDaemon.once('ready', runTest)
  }
  function runTest () {
    t.once('end', function () {
      wrtc.close()
    })
    serverTest(t, 'ws', 'inet')
  }
})