/* eslint-env mocha */

const mc = require('../')
const assert = require('power-assert')

const { firstVersion, lastVersion } = require('./common/parallel')

mc.supportedVersions.forEach(function (supportedVersion, i) {
  if (!(i >= firstVersion && i <= lastVersion)) { return }

  const PORT = Math.round(30000 + Math.random() * 20000)
  const mcData = require('minecraft-data')(supportedVersion)
  const version = mcData.version

  describe('mc-server ' + version.minecraftVersion, function () {
    this.timeout(5000)
    it('starts listening and shuts down cleanly', function (done) {
      const server = mc.createServer({
        'online-mode': false,
        version: version.minecraftVersion,
        port: PORT
      })
      let listening = false
      server.on('listening', function () {
        listening = true
        server.close()
      })
      server.on('close', function () {
        assert.ok(listening)
        done()
      })
    })
    it('kicks clients that do not log in', function (done) {
      const server = mc.createServer({
        'online-mode': false,
        kickTimeout: 100,
        checkTimeoutInterval: 10,
        version: version.minecraftVersion,
        port: PORT
      })
      let count = 2
      server.on('connection', function (client) {
        client.on('end', function (reason) {
          assert.strictEqual(reason, '{"text":"LoginTimeout"}')
          server.close()
        })
      })
      server.on('close', function () {
        resolve()
      })
      server.on('listening', function () {
        const client = new mc.Client(false, version.minecraftVersion)
        client.on('end', function () {
          resolve()
        })
        client.connect(PORT, '127.0.0.1')
      })

      function resolve () {
        count -= 1
        if (count <= 0) done()
      }
    })
    it('kicks clients that do not send keepalive packets', function (done) {
      const server = mc.createServer({
        'online-mode': false,
        kickTimeout: 100,
        checkTimeoutInterval: 10,
        version: version.minecraftVersion,
        port: PORT
      })
      let count = 2
      server.on('connection', function (client) {
        client.on('end', function (reason) {
          assert.strictEqual(reason, '{"text":"KeepAliveTimeout"}')
          server.close()
        })
      })
      server.on('close', function () {
        resolve()
      })
      server.on('listening', function () {
        const client = mc.createClient({
          username: 'superpants',
          host: '127.0.0.1',
          port: PORT,
          keepAlive: false,
          version: version.minecraftVersion
        })
        client.on('end', function () {
          resolve()
        })
      })
      function resolve () {
        count -= 1
        if (count <= 0) done()
      }
    })
    it('responds to ping requests', function (done) {
      const server = mc.createServer({
        'online-mode': false,
        motd: 'test1234',
        'max-players': 120,
        version: version.minecraftVersion,
        port: PORT
      })
      server.on('listening', function () {
        mc.ping({
          host: '127.0.0.1',
          version: version.minecraftVersion,
          port: PORT
        }, function (err, results) {
          if (err) return done(err)
          assert.ok(results.latency >= 0)
          assert.ok(results.latency <= 1000)
          delete results.latency
          assert.deepEqual(results, {
            version: {
              name: version.minecraftVersion,
              protocol: version.version
            },
            players: {
              max: 120,
              online: 0,
              sample: []
            },
            description: { text: 'test1234' }
          })
          server.close()
        })
      })
      server.on('close', done)
    })
    it('clients can log in and chat', function (done) {
      const server = mc.createServer({
        'online-mode': false,
        version: version.minecraftVersion,
        port: PORT
      })
      const username = ['player1', 'player2']
      let index = 0
      server.on('login', function (client) {
        assert.notEqual(client.id, null)
        assert.strictEqual(client.username, username[index++])
        broadcast(client.username + ' joined the game.')
        client.on('end', function () {
          broadcast(client.username + ' left the game.', client)
          if (client.username === 'player2') server.close()
        })
        client.write('login', {
          entityId: client.id,
          levelType: 'default',
          gameMode: 1,
          dimension: 0,
          difficulty: 2,
          maxPlayers: server.maxPlayers,
          reducedDebugInfo: 0
        })
        client.on('chat', function (packet) {
          const message = '<' + client.username + '>' + ' ' + packet.message
          broadcast(message)
        })
      })
      server.on('close', done)
      server.on('listening', function () {
        const player1 = mc.createClient({
          username: 'player1',
          host: '127.0.0.1',
          version: version.minecraftVersion,
          port: PORT
        })
        player1.on('login', function (packet) {
          assert.strictEqual(packet.gameMode, 1)
          assert.strictEqual(packet.levelType, 'default')
          assert.strictEqual(packet.dimension, 0)
          player1.once('chat', function (packet) {
            assert.strictEqual(packet.message, '{"text":"player2 joined the game."}')
            player1.once('chat', function (packet) {
              assert.strictEqual(packet.message, '{"text":"<player2> hi"}')
              player2.once('chat', fn)
              function fn (packet) {
                if (/<player2>/.test(packet.message)) {
                  player2.once('chat', fn)
                  return
                }
                assert.strictEqual(packet.message, '{"text":"<player1> hello"}')
                player1.once('chat', function (packet) {
                  assert.strictEqual(packet.message, '{"text":"player2 left the game."}')
                  player1.end()
                })
                player2.end()
              }

              player1.write('chat', { message: 'hello' })
            })
            player2.write('chat', { message: 'hi' })
          })
          const player2 = mc.createClient({
            username: 'player2',
            host: '127.0.0.1',
            version: version.minecraftVersion,
            port: PORT
          })
        })
      })

      function broadcast (message, exclude) {
        let client
        for (const clientId in server.clients) {
          if (server.clients[clientId] === undefined) continue

          client = server.clients[clientId]
          if (client !== exclude) client.write('chat', { message: JSON.stringify({ text: message }), position: 0 })
        }
      }
    })
    it('kicks clients when invalid credentials', function (done) {
      this.timeout(10000)
      const server = mc.createServer({
        version: version.minecraftVersion,
        port: PORT
      })
      let count = 4
      server.on('connection', function (client) {
        client.on('end', function (reason) {
          resolve()
          server.close()
        })
      })
      server.on('close', function () {
        resolve()
      })
      server.on('listening', function () {
        resolve()
        const client = mc.createClient({
          username: 'lalalal',
          host: '127.0.0.1',
          version: version.minecraftVersion,
          port: PORT
        })
        client.on('end', function () {
          resolve()
        })
      })
      function resolve () {
        count -= 1
        if (count <= 0) done()
      }
    })
    it('gives correct reason for kicking clients when shutting down', function (done) {
      const server = mc.createServer({
        'online-mode': false,
        version: version.minecraftVersion,
        port: PORT
      })
      let count = 2
      server.on('login', function (client) {
        client.on('end', function (reason) {
          assert.strictEqual(reason, '{"text":"ServerShutdown"}')
          resolve()
        })
        client.write('login', {
          entityId: client.id,
          levelType: 'default',
          gameMode: 1,
          dimension: 0,
          difficulty: 2,
          maxPlayers: server.maxPlayers,
          reducedDebugInfo: 0
        })
      })
      server.on('close', function () {
        resolve()
      })
      server.on('listening', function () {
        const client = mc.createClient({
          username: 'lalalal',
          host: '127.0.0.1',
          version: version.minecraftVersion,
          port: PORT
        })
        client.on('login', function () {
          server.close()
        })
      })
      function resolve () {
        count -= 1
        if (count <= 0) done()
      }
    })
  })
})