// 'use strict'
// /* eslint-env mocha */

// const { expect } = require('aegir/utils/chai')
// const sinon = require('sinon')

// const { Multiaddr } = require('multiaddr')
// const { collect } = require('streaming-iterables')
// const pipe = require('it-pipe')
// const AggregateError = require('aggregate-error')
// const { fromString: uint8ArrayFromString } = require('uint8arrays/from-string')

// const { createPeerId } = require('../utils/creators/peer')
// const baseOptions = require('../utils/base-options')
// const Libp2p = require('../../src')
// const { codes: Errors } = require('../../src/errors')

// const listenAddr = '/ip4/0.0.0.0/tcp/0'

// describe('Dialing (via relay, TCP)', () => {
//   let srcLibp2p
//   let relayLibp2p
//   let dstLibp2p

//   beforeEach(async () => {
//     const peerIds = await createPeerId({ number: 3 })
//     // Create 3 nodes, and turn HOP on for the relay
//     ;[srcLibp2p, relayLibp2p, dstLibp2p] = peerIds.map((peerId, index) => {
//       const opts = baseOptions
//       index === 1 && (opts.config.relay.hop.enabled = true)
//       return new Libp2p({
//         ...opts,
//         addresses: {
//           listen: [listenAddr]
//         },
//         peerId
//       })
//     })

//     dstLibp2p.handle('/echo/1.0.0', ({ stream }) => pipe(stream, stream))
//   })

//   beforeEach(() => {
//     // Start each node
//     return Promise.all([srcLibp2p, relayLibp2p, dstLibp2p].map(libp2p => libp2p.start()))
//   })

//   afterEach(async () => {
//     // Stop each node
//     return Promise.all([srcLibp2p, relayLibp2p, dstLibp2p].map(libp2p => libp2p.stop()))
//   })

//   it('should be able to connect to a peer over a relay with active connections', async () => {
//     const relayAddr = relayLibp2p.transportManager.getAddrs()[0]
//     const relayIdString = relayLibp2p.peerId.toB58String()

//     const dialAddr = relayAddr
//       .encapsulate(`/p2p/${relayIdString}`)
//       .encapsulate(`/p2p-circuit/p2p/${dstLibp2p.peerId}`)

//     const tcpAddrs = dstLibp2p.transportManager.getAddrs()
//     sinon.stub(dstLibp2p.addressManager, 'listen').value([new Multiaddr(`/p2p-circuit${relayAddr}/p2p/${relayIdString}`)])
//     await relayLibp2p.transportManager._transports.get('Circuit')._reservationStore.reserve(dstLibp2p.peerId, new Multiaddr())
//     await dstLibp2p.transportManager.listen(dstLibp2p.addressManager.getListenAddrs())
//     expect(dstLibp2p.transportManager.getAddrs()).to.have.deep.members([...tcpAddrs, dialAddr.decapsulate('p2p')])
//     const connection = await srcLibp2p.dial(dialAddr)
//     expect(connection).to.exist()
//     expect(connection.remotePeer.toBytes()).to.eql(dstLibp2p.peerId.toBytes())
//     expect(connection.localPeer.toBytes()).to.eql(srcLibp2p.peerId.toBytes())
//     expect(connection.remoteAddr).to.eql(dialAddr)
//     expect(connection.localAddr).to.eql(
//       relayAddr // the relay address
//         .encapsulate(`/p2p/${relayIdString}`) // with its peer id
//         .encapsulate('/p2p-circuit') // the local peer is connected over the relay
//         .encapsulate(`/p2p/${srcLibp2p.peerId.toB58String()}`) // and the local peer id
//     )

//     const { stream: echoStream } = await connection.newStream('/echo/1.0.0')
//     const input = uint8ArrayFromString('hello')
//     const [output] = await pipe(
//       [input],
//       echoStream,
//       collect
//     )

//     expect(output.slice()).to.eql(input)
//   })

//   it('should fail to connect without reservation', async () => {
//     const relayAddr = relayLibp2p.transportManager.getAddrs()[0]
//     const relayIdString = relayLibp2p.peerId.toB58String()

//     const dialAddr = relayAddr
//       .encapsulate(`/p2p/${relayIdString}`)
//       .encapsulate(`/p2p-circuit/p2p/${dstLibp2p.peerId}`)

//     const tcpAddrs = dstLibp2p.transportManager.getAddrs()
//     sinon.stub(dstLibp2p.addressManager, 'listen').value([new Multiaddr(`/p2p-circuit${relayAddr}/p2p/${relayIdString}`)])

//     await dstLibp2p.transportManager.listen(dstLibp2p.addressManager.getListenAddrs())
//     expect(dstLibp2p.transportManager.getAddrs()).to.have.deep.members([...tcpAddrs, dialAddr.decapsulate('p2p')])
//     await expect(srcLibp2p.dial(dialAddr))
//       .to.eventually.be.rejectedWith(AggregateError)
//       .and.to.have.nested.property('._errors[0].code', Errors.ERR_HOP_REQUEST_FAILED)
//   })

//   it('should fail to connect to a peer over a relay with inactive connections', async () => {
//     const relayAddr = relayLibp2p.transportManager.getAddrs()[0]
//     const relayIdString = relayLibp2p.peerId.toB58String()
//     sinon.stub(relayLibp2p.connectionManager, 'get').withArgs(dstLibp2p.peerId).returns(null)
//     const dialAddr = relayAddr
//       .encapsulate(`/p2p/${relayIdString}`)
//       .encapsulate(`/p2p-circuit/p2p/${dstLibp2p.peerId.toB58String()}`)

//     await expect(srcLibp2p.dial(dialAddr))
//       .to.eventually.be.rejectedWith(AggregateError)
//       .and.to.have.nested.property('._errors[0].code', Errors.ERR_HOP_REQUEST_FAILED)
//   })

//   it('should not stay connected to a relay when not already connected and HOP fails', async () => {
//     const relayAddr = relayLibp2p.transportManager.getAddrs()[0]
//     const relayIdString = relayLibp2p.peerId.toB58String()

//     const dialAddr = relayAddr
//       .encapsulate(`/p2p/${relayIdString}`)
//       .encapsulate(`/p2p-circuit/p2p/${dstLibp2p.peerId.toB58String()}`)

//     await expect(srcLibp2p.dial(dialAddr))
//       .to.eventually.be.rejectedWith(AggregateError)
//       .and.to.have.nested.property('._errors[0].code', Errors.ERR_HOP_REQUEST_FAILED)

//     // We should not be connected to the relay, because we weren't before the dial
//     const srcToRelayConn = srcLibp2p.connectionManager.get(relayLibp2p.peerId)
//     expect(srcToRelayConn).to.not.exist()
//   })

//   it('dialer should stay connected to an already connected relay on hop failure', async () => {
//     const relayIdString = relayLibp2p.peerId.toB58String()
//     const relayAddr = relayLibp2p.transportManager.getAddrs()[0].encapsulate(`/p2p/${relayIdString}`)

//     const dialAddr = relayAddr
//       .encapsulate(`/p2p-circuit/p2p/${dstLibp2p.peerId.toB58String()}`)

//     await srcLibp2p.dial(relayAddr)

//     await expect(srcLibp2p.dial(dialAddr))
//       .to.eventually.be.rejectedWith(AggregateError)
//       .and.to.have.nested.property('._errors[0].code', Errors.ERR_HOP_REQUEST_FAILED)

//     const srcToRelayConn = srcLibp2p.connectionManager.get(relayLibp2p.peerId)
//     expect(srcToRelayConn).to.exist()
//     expect(srcToRelayConn.stat.status).to.equal('open')
//   })

//   it('destination peer should stay connected to an already connected relay on hop failure', async () => {
//     const relayIdString = relayLibp2p.peerId.toB58String()
//     const relayAddr = relayLibp2p.transportManager.getAddrs()[0].encapsulate(`/p2p/${relayIdString}`)

//     const dialAddr = relayAddr
//       .encapsulate(`/p2p-circuit/p2p/${dstLibp2p.peerId.toB58String()}`)

//     // Connect the destination peer and the relay
//     const tcpAddrs = dstLibp2p.transportManager.getAddrs()
//     sinon.stub(dstLibp2p.addressManager, 'getListenAddrs').returns([new Multiaddr(`${relayAddr}/p2p-circuit`)])

//     await dstLibp2p.transportManager.listen(dstLibp2p.addressManager.getListenAddrs())
//     expect(dstLibp2p.transportManager.getAddrs()).to.have.deep.members([...tcpAddrs, dialAddr.decapsulate('p2p')])

//     sinon.stub(relayLibp2p.connectionManager, 'get').withArgs(dstLibp2p.peerId).returns(null)

//     await expect(srcLibp2p.dial(dialAddr))
//       .to.eventually.be.rejectedWith(AggregateError)
//       .and.to.have.nested.property('._errors[0].code', Errors.ERR_HOP_REQUEST_FAILED)

//     const dstToRelayConn = dstLibp2p.connectionManager.get(relayLibp2p.peerId)
//     expect(dstToRelayConn).to.exist()
//     expect(dstToRelayConn.stat.status).to.equal('open')
//   })
// })