var Lab = require('lab')
var Code = require('code')
var lab = exports.lab = Lab.script()

var experiment = lab.experiment
var test = lab.test
var expect = Code.expect

var multiaddr = require('multiaddr')
var Id = require('peer-id')
var Peer = require('peer-info')
var Swarm = require('../src')
var tcp = require('libp2p-tcp')
var Spdy = require('libp2p-spdy')

/* TODO
experiment('Basics', function () {
  test('enforces creation with new', function (done) {done() })
})
*/

// because of Travis-CI
process.on('uncaughtException', function (err) {
  console.log('Caught exception: ' + err)
})

experiment('Without a Stream Muxer', function () {
  experiment('tcp', function () {
    test('add the transport', function (done) {
      var mh = multiaddr('/ip4/127.0.0.1/tcp/8010')
      var p = new Peer(Id.create(), [])
      var sw = new Swarm(p)

      sw.addTransport('tcp', tcp,
          { multiaddr: mh }, {}, {port: 8010}, function () {
        expect(sw.transports['tcp'].options).to.deep.equal({ multiaddr: mh })
        expect(sw.transports['tcp'].dialOptions).to.deep.equal({})
        expect(sw.transports['tcp'].listenOptions).to.deep.equal({port: 8010})
        expect(sw.transports['tcp'].transport).to.deep.equal(tcp)
        sw.closeListener('tcp', function () {
          done()
        })
      })
    })

    test('dial a conn', function (done) {
      var mh1 = multiaddr('/ip4/127.0.0.1/tcp/8010')
      var p1 = new Peer(Id.create(), [])
      var sw1 = new Swarm(p1)
      sw1.addTransport('tcp', tcp, { multiaddr: mh1 }, {}, {port: 8010}, ready)

      var mh2 = multiaddr('/ip4/127.0.0.1/tcp/8020')
      var p2 = new Peer(Id.create(), [])
      var sw2 = new Swarm(p2)
      sw2.addTransport('tcp', tcp, { multiaddr: mh2 }, {}, {port: 8020}, ready)

      var readyCounter = 0

      function ready () {
        readyCounter++
        if (readyCounter < 2) {
          return
        }

        sw1.dial(p2, {}, function (err) {
          expect(err).to.equal(undefined)
          expect(Object.keys(sw1.conns).length).to.equal(1)
          var cleaningCounter = 0
          sw1.closeConns(cleaningUp)
          sw2.closeConns(cleaningUp)

          sw1.closeListener('tcp', cleaningUp)
          sw2.closeListener('tcp', cleaningUp)

          function cleaningUp () {
            cleaningCounter++
            if (cleaningCounter < 4) {
              return
            }

            done()
          }
        })
      }
    })

    test('dial a conn on a protocol', function (done) {
      var mh1 = multiaddr('/ip4/127.0.0.1/tcp/8010')
      var p1 = new Peer(Id.create(), [])
      var sw1 = new Swarm(p1)
      sw1.addTransport('tcp', tcp, { multiaddr: mh1 }, {}, {port: 8010}, ready)

      var mh2 = multiaddr('/ip4/127.0.0.1/tcp/8020')
      var p2 = new Peer(Id.create(), [])
      var sw2 = new Swarm(p2)
      sw2.addTransport('tcp', tcp, { multiaddr: mh2 }, {}, {port: 8020}, ready)

      sw2.handleProtocol('/sparkles/1.0.0', function (conn) {
        conn.end()
        conn.on('end', function () {
          var cleaningCounter = 0
          sw1.closeConns(cleaningUp)
          sw2.closeConns(cleaningUp)

          sw1.closeListener('tcp', cleaningUp)
          sw2.closeListener('tcp', cleaningUp)

          function cleaningUp () {
            cleaningCounter++
            if (cleaningCounter < 4) {
              return
            }

            done()
          }
        })
      })

      var count = 0

      function ready () {
        count++
        if (count < 2) {
          return
        }

        sw1.dial(p2, {}, '/sparkles/1.0.0', function (err, conn) {
          expect(err).to.equal(null)
          expect(Object.keys(sw1.conns).length).to.equal(0)
          conn.end()
        })
      }
    })

    test('dial a protocol on a previous created conn', function (done) {
      var mh1 = multiaddr('/ip4/127.0.0.1/tcp/8010')
      var p1 = new Peer(Id.create(), [])
      var sw1 = new Swarm(p1)
      sw1.addTransport('tcp', tcp, { multiaddr: mh1 }, {}, {port: 8010}, ready)

      var mh2 = multiaddr('/ip4/127.0.0.1/tcp/8020')
      var p2 = new Peer(Id.create(), [])
      var sw2 = new Swarm(p2)
      sw2.addTransport('tcp', tcp, { multiaddr: mh2 }, {}, {port: 8020}, ready)

      var readyCounter = 0

      sw2.handleProtocol('/sparkles/1.0.0', function (conn) {
        conn.end()
        conn.on('end', function () {
          var cleaningCounter = 0
          sw1.closeConns(cleaningUp)
          sw2.closeConns(cleaningUp)

          sw1.closeListener('tcp', cleaningUp)
          sw2.closeListener('tcp', cleaningUp)

          function cleaningUp () {
            cleaningCounter++
            if (cleaningCounter < 4) {
              return
            }

            done()
          }
        })
      })

      function ready () {
        readyCounter++
        if (readyCounter < 2) {
          return
        }

        sw1.dial(p2, {}, function (err) {
          expect(err).to.equal(undefined)
          expect(Object.keys(sw1.conns).length).to.equal(1)

          sw1.dial(p2, {}, '/sparkles/1.0.0', function (err, conn) {
            expect(err).to.equal(null)
            expect(Object.keys(sw1.conns).length).to.equal(0)
            conn.end()
          })
        })
      }
    })

    test('add an upgrade', function (done) { done() })
    test('dial a conn on top of a upgrade', function (done) { done() })
    test('dial a conn on a protocol on top of a upgrade', function (done) { done() })
  })

  /* TODO
  experiment('udp', function () {
    test('add the transport', function (done) { done() })
    test('dial a conn', function (done) { done() })
    test('dial a conn on a protocol', function (done) { done() })
    test('add an upgrade', function (done) { done() })
    test('dial a conn on top of a upgrade', function (done) { done() })
    test('dial a conn on a protocol on top of a upgrade', function (done) { done() })
  }) */

  /* TODO
  experiment('udt', function () {
      test('add the transport', function (done) { done() })
      test('dial a conn', function (done) { done() })
      test('dial a conn on a protocol', function (done) { done() })
      test('add an upgrade', function (done) { done() })
      test('dial a conn on top of a upgrade', function (done) { done() })
      test('dial a conn on a protocol on top of a upgrade', function (done) { done() })
  }) */

  /* TODO
  experiment('utp', function () {
    test('add the transport', function (done) { done() })
    test('dial a conn', function (done) { done() })
    test('dial a conn on a protocol', function (done) { done() })
    test('add an upgrade', function (done) { done() })
    test('dial a conn on top of a upgrade', function (done) { done() })
    test('dial a conn on a protocol on top of a upgrade', function (done) { done() })
  }) */
})

experiment('With a SPDY Stream Muxer', function () {
  experiment('tcp', function () {
    test('add Stream Muxer', function (done) {
      // var mh = multiaddr('/ip4/127.0.0.1/tcp/8010')
      var p = new Peer(Id.create(), [])
      var sw = new Swarm(p)
      sw.addStreamMuxer('spdy', Spdy, {})

      done()
    })

    test('dial a conn on a protocol', function (done) {
      var mh1 = multiaddr('/ip4/127.0.0.1/tcp/8010')
      var p1 = new Peer(Id.create(), [])
      var sw1 = new Swarm(p1)
      sw1.addTransport('tcp', tcp, { multiaddr: mh1 }, {}, {port: 8010}, ready)
      sw1.addStreamMuxer('spdy', Spdy, {})

      var mh2 = multiaddr('/ip4/127.0.0.1/tcp/8020')
      var p2 = new Peer(Id.create(), [])
      var sw2 = new Swarm(p2)
      sw2.addTransport('tcp', tcp, { multiaddr: mh2 }, {}, {port: 8020}, ready)
      sw2.addStreamMuxer('spdy', Spdy, {})

      sw2.handleProtocol('/sparkles/1.0.0', function (conn) {
        // formallity so that the conn starts flowing
        conn.on('data', function (chunk) {})

        conn.end()
        conn.on('end', function () {
          expect(Object.keys(sw1.muxedConns).length).to.equal(1)
          expect(Object.keys(sw2.muxedConns).length).to.equal(0)
          var cleaningCounter = 0
          sw1.closeConns(cleaningUp)
          sw2.closeConns(cleaningUp)

          sw1.closeListener('tcp', cleaningUp)
          sw2.closeListener('tcp', cleaningUp)

          function cleaningUp () {
            cleaningCounter++
            // TODO FIX: here should be 4, but because super wrapping of
            // streams, it makes it so hard to properly close the muxed
            // streams - https://github.com/indutny/spdy-transport/issues/14
            if (cleaningCounter < 3) {
              return
            }

            done()
          }
        })
      })

      var count = 0

      function ready () {
        count++
        if (count < 2) {
          return
        }

        sw1.dial(p2, {}, '/sparkles/1.0.0', function (err, conn) {
          conn.on('data', function () {})
          expect(err).to.equal(null)
          expect(Object.keys(sw1.conns).length).to.equal(0)
          conn.end()
        })
      }
    })
    test('dial two conns (transport reuse)', function (done) {
      var mh1 = multiaddr('/ip4/127.0.0.1/tcp/8010')
      var p1 = new Peer(Id.create(), [])
      var sw1 = new Swarm(p1)
      sw1.addTransport('tcp', tcp, { multiaddr: mh1 }, {}, {port: 8010}, ready)
      sw1.addStreamMuxer('spdy', Spdy, {})

      var mh2 = multiaddr('/ip4/127.0.0.1/tcp/8020')
      var p2 = new Peer(Id.create(), [])
      var sw2 = new Swarm(p2)
      sw2.addTransport('tcp', tcp, { multiaddr: mh2 }, {}, {port: 8020}, ready)
      sw2.addStreamMuxer('spdy', Spdy, {})

      sw2.handleProtocol('/sparkles/1.0.0', function (conn) {
        // formallity so that the conn starts flowing
        conn.on('data', function (chunk) {})

        conn.end()
        conn.on('end', function () {
          expect(Object.keys(sw1.muxedConns).length).to.equal(1)
          expect(Object.keys(sw2.muxedConns).length).to.equal(0)
          conn.end()

          var cleaningCounter = 0
          sw1.closeConns(cleaningUp)
          sw2.closeConns(cleaningUp)

          sw1.closeListener('tcp', cleaningUp)
          sw2.closeListener('tcp', cleaningUp)

          function cleaningUp () {
            cleaningCounter++
            // TODO FIX: here should be 4, but because super wrapping of
            // streams, it makes it so hard to properly close the muxed
            // streams - https://github.com/indutny/spdy-transport/issues/14
            if (cleaningCounter < 3) {
              return
            }

            done()
          }
        })
      })

      var count = 0

      function ready () {
        count++
        if (count < 2) {
          return
        }

        sw1.dial(p2, {}, '/sparkles/1.0.0', function (err, conn) {
          // TODO Improve clarity
          sw1.dial(p2, {}, '/sparkles/1.0.0', function (err, conn) {
            conn.on('data', function () {})
            expect(err).to.equal(null)
            expect(Object.keys(sw1.conns).length).to.equal(0)
            conn.end()
          })

          conn.on('data', function () {})
          expect(err).to.equal(null)
          expect(Object.keys(sw1.conns).length).to.equal(0)
          conn.end()
        })
      }
    })

    test('identify', function (done) {
      var mh1 = multiaddr('/ip4/127.0.0.1/tcp/8010')
      var p1 = new Peer(Id.create(), [])
      var sw1 = new Swarm(p1)
      sw1.addTransport('tcp', tcp, { multiaddr: mh1 }, {}, {port: 8010}, ready)
      sw1.addStreamMuxer('spdy', Spdy, {})
      sw1.enableIdentify()

      var mh2 = multiaddr('/ip4/127.0.0.1/tcp/8020')
      var p2 = new Peer(Id.create(), [])
      var sw2 = new Swarm(p2)
      sw2.addTransport('tcp', tcp, { multiaddr: mh2 }, {}, {port: 8020}, ready)
      sw2.addStreamMuxer('spdy', Spdy, {})
      sw2.enableIdentify()

      sw2.handleProtocol('/sparkles/1.0.0', function (conn) {
        // formallity so that the conn starts flowing
        conn.on('data', function (chunk) {})

        conn.end()
        conn.on('end', function () {
          expect(Object.keys(sw1.muxedConns).length).to.equal(1)

          var cleaningCounter = 0
          sw1.closeConns(cleaningUp)
          sw2.closeConns(cleaningUp)

          sw1.closeListener('tcp', cleaningUp)
          sw2.closeListener('tcp', cleaningUp)

          function cleaningUp () {
            cleaningCounter++
            // TODO FIX: here should be 4, but because super wrapping of
            // streams, it makes it so hard to properly close the muxed
            // streams - https://github.com/indutny/spdy-transport/issues/14
            if (cleaningCounter < 3) {
              return
            }
            // give time for identify to finish
            setTimeout(function () {
              expect(Object.keys(sw2.muxedConns).length).to.equal(1)
              done()
            }, 500)
          }
        })
      })

      var count = 0

      function ready () {
        count++
        if (count < 2) {
          return
        }

        sw1.dial(p2, {}, '/sparkles/1.0.0', function (err, conn) {
          conn.on('data', function () {})
          expect(err).to.equal(null)
          expect(Object.keys(sw1.conns).length).to.equal(0)
          conn.end()
        })
      }
    })
  })
})