// startOnlineServicesWithHost  is the set of services which need to be
// initialized with the host and _before_ we start listening.
func (n *IpfsNode) startOnlineServicesWithHost(ctx context.Context, host p2phost.Host, routingOption RoutingOption) error {
	// setup diagnostics service
	n.Diagnostics = diag.NewDiagnostics(n.Identity, host)
	n.Ping = ping.NewPingService(host)

	// setup routing service
	r, err := routingOption(ctx, host, n.Repo.Datastore())
	if err != nil {
		return err
	}
	n.Routing = r

	// Wrap standard peer host with routing system to allow unknown peer lookups
	n.PeerHost = rhost.Wrap(host, n.Routing)

	// setup exchange service
	const alwaysSendToPeer = true // use YesManStrategy
	bitswapNetwork := bsnet.NewFromIpfsHost(n.PeerHost, n.Routing)
	n.Exchange = bitswap.New(ctx, n.Identity, bitswapNetwork, n.Blockstore, alwaysSendToPeer)

	// setup name system
	n.Namesys = namesys.NewNameSystem(n.Routing)

	return nil
}

func setupIpnsTest(t *testing.T, node *core.IpfsNode) (*core.IpfsNode, *fstest.Mount) {
	maybeSkipFuseTests(t)

	var err error
	if node == nil {
		node, err = core.NewNode(context.Background(), nil)
		if err != nil {
			t.Fatal(err)
		}

		err = node.LoadPrivateKey()
		if err != nil {
			t.Fatal(err)
		}

		node.Routing = offroute.NewOfflineRouter(node.Repo.Datastore(), node.PrivateKey)
		node.Namesys = namesys.NewNameSystem(node.Routing, node.Repo.Datastore(), 0)

		err = InitializeKeyspace(node, node.PrivateKey)
		if err != nil {
			t.Fatal(err)
		}
	}

	fs, err := NewFileSystem(node, node.PrivateKey, "", "")
	if err != nil {
		t.Fatal(err)
	}
	mnt, err := fstest.MountedT(t, fs)
	if err != nil {
		t.Fatal(err)
	}

	return node, mnt
}

// NewMockNode constructs an IpfsNode for use in tests.
func NewMockNode() (*core.IpfsNode, error) {
	ctx := context.Background()

	// Generate Identity
	ident, err := testutil.RandIdentity()
	if err != nil {
		return nil, err
	}
	p := ident.ID()

	c := config.Config{
		Identity: config.Identity{
			PeerID: p.String(),
		},
	}

	nd, err := core.Offline(&repo.Mock{
		C: c,
		D: ds2.CloserWrap(syncds.MutexWrap(datastore.NewMapDatastore())),
	})(ctx)
	if err != nil {
		return nil, err
	}

	nd.PrivateKey = ident.PrivateKey()
	nd.Peerstore = peer.NewPeerstore()
	nd.Peerstore.AddPrivKey(p, ident.PrivateKey())
	nd.Peerstore.AddPubKey(p, ident.PublicKey())
	nd.Identity = p

	nd.PeerHost, err = mocknet.New(nd.Context()).AddPeer(ident.PrivateKey(), ident.Address()) // effectively offline
	if err != nil {
		return nil, err
	}

	// Routing
	nd.Routing = offrt.NewOfflineRouter(nd.Repo.Datastore(), nd.PrivateKey)

	// Bitswap
	bstore := blockstore.NewBlockstore(nd.Repo.Datastore())
	bserv, err := blockservice.New(bstore, offline.Exchange(bstore))
	if err != nil {
		return nil, err
	}

	nd.DAG = mdag.NewDAGService(bserv)

	nd.Pinning = pin.NewPinner(nd.Repo.Datastore(), nd.DAG)

	// Namespace resolver
	nd.Namesys = nsys.NewNameSystem(nd.Routing)

	// Path resolver
	nd.Resolver = &path.Resolver{DAG: nd.DAG}

	return nd, nil
}

// SetupOfflineRouting loads the local nodes private key and
// uses it to instantiate a routing system in offline mode.
// This is primarily used for offline ipns modifications.
func (n *IpfsNode) SetupOfflineRouting() error {
	err := n.LoadPrivateKey()
	if err != nil {
		return err
	}

	n.Routing = offroute.NewOfflineRouter(n.Repo.Datastore(), n.PrivateKey)

	n.Namesys = namesys.NewNameSystem(n.Routing)

	return nil
}

// SetupOfflineRouting loads the local nodes private key and
// uses it to instantiate a routing system in offline mode.
// This is primarily used for offline ipns modifications.
func (n *IpfsNode) SetupOfflineRouting() error {
	if n.Routing != nil {
		// Routing was already set up
		return nil
	}
	err := n.LoadPrivateKey()
	if err != nil {
		return err
	}

	n.Routing = offroute.NewOfflineRouter(n.Repo.Datastore(), n.PrivateKey)

	size, err := n.getCacheSize()
	if err != nil {
		return err
	}

	n.Namesys = namesys.NewNameSystem(n.Routing, n.Repo.Datastore(), size)

	return nil
}

		// default to nodes namesys resolver
		var resolver namesys.Resolver = n.Namesys

		if local && nocache {
			res.SetError(errors.New("cannot specify both local and nocache"), cmds.ErrNormal)
			return
		}

		if local {
			offroute := offline.NewOfflineRouter(n.Repo.Datastore(), n.PrivateKey)
			resolver = namesys.NewRoutingResolver(offroute, 0)
		}

		if nocache {
			resolver = namesys.NewNameSystem(n.Routing, n.Repo.Datastore(), 0)
		}

		var name string
		if len(req.Arguments()) == 0 {
			if n.Identity == "" {
				res.SetError(errors.New("Identity not loaded!"), cmds.ErrNormal)
				return
			}
			name = n.Identity.Pretty()

		} else {
			name = req.Arguments()[0]
		}

		recursive, _, _ := req.Option("recursive").Bool()

// Test externally unmounting, then trying to unmount in code
func TestExternalUnmount(t *testing.T) {
	if testing.Short() {
		t.SkipNow()
	}

	// TODO: needed?
	maybeSkipFuseTests(t)

	node, err := core.NewNode(context.Background(), nil)
	if err != nil {
		t.Fatal(err)
	}

	err = node.LoadPrivateKey()
	if err != nil {
		t.Fatal(err)
	}

	node.Routing = offroute.NewOfflineRouter(node.Repo.Datastore(), node.PrivateKey)
	node.Namesys = namesys.NewNameSystem(node.Routing, node.Repo.Datastore(), 0)

	err = ipns.InitializeKeyspace(node, node.PrivateKey)
	if err != nil {
		t.Fatal(err)
	}

	// get the test dir paths (/tmp/fusetestXXXX)
	dir, err := ioutil.TempDir("", "fusetest")
	if err != nil {
		t.Fatal(err)
	}

	ipfsDir := dir + "/ipfs"
	ipnsDir := dir + "/ipns"
	mkdir(t, ipfsDir)
	mkdir(t, ipnsDir)

	err = Mount(node, ipfsDir, ipnsDir)
	if err != nil {
		t.Fatal(err)
	}

	// Run shell command to externally unmount the directory
	cmd := "fusermount"
	args := []string{"-u", ipnsDir}
	if err := exec.Command(cmd, args...).Run(); err != nil {
		t.Fatal(err)
	}

	// TODO(noffle): it takes a moment for the goroutine that's running fs.Serve to be notified and do its cleanup.
	time.Sleep(time.Millisecond * 100)

	// Attempt to unmount IPNS; check that it was already unmounted.
	err = node.Mounts.Ipns.Unmount()
	if err != mount.ErrNotMounted {
		t.Fatal("Unmount should have failed")
	}

	// Attempt to unmount IPFS; it should unmount successfully.
	err = node.Mounts.Ipfs.Unmount()
	if err != nil {
		t.Fatal(err)
	}
}

func TestRepublish(t *testing.T) {
	// set cache life to zero for testing low-period repubs

	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	// create network
	mn := mocknet.New(ctx)

	var nodes []*core.IpfsNode
	for i := 0; i < 10; i++ {
		nd, err := core.NewNode(ctx, &core.BuildCfg{
			Online: true,
			Host:   mock.MockHostOption(mn),
		})
		if err != nil {
			t.Fatal(err)
		}

		nd.Namesys = namesys.NewNameSystem(nd.Routing, nd.Repo.Datastore(), 0)

		nodes = append(nodes, nd)
	}

	mn.LinkAll()

	bsinf := core.BootstrapConfigWithPeers(
		[]pstore.PeerInfo{
			nodes[0].Peerstore.PeerInfo(nodes[0].Identity),
		},
	)

	for _, n := range nodes[1:] {
		if err := n.Bootstrap(bsinf); err != nil {
			t.Fatal(err)
		}
	}

	// have one node publish a record that is valid for 1 second
	publisher := nodes[3]
	p := path.FromString("/ipfs/QmUNLLsPACCz1vLxQVkXqqLX5R1X345qqfHbsf67hvA3Nn") // does not need to be valid
	rp := namesys.NewRoutingPublisher(publisher.Routing, publisher.Repo.Datastore())
	err := rp.PublishWithEOL(ctx, publisher.PrivateKey, p, time.Now().Add(time.Second))
	if err != nil {
		t.Fatal(err)
	}

	name := "/ipns/" + publisher.Identity.Pretty()
	if err := verifyResolution(nodes, name, p); err != nil {
		t.Fatal(err)
	}

	// Now wait a second, the records will be invalid and we should fail to resolve
	time.Sleep(time.Second)
	if err := verifyResolutionFails(nodes, name); err != nil {
		t.Fatal(err)
	}

	// The republishers that are contained within the nodes have their timeout set
	// to 12 hours. Instead of trying to tweak those, we're just going to pretend
	// they dont exist and make our own.
	repub := NewRepublisher(publisher.Routing, publisher.Repo.Datastore(), publisher.Peerstore)
	repub.Interval = time.Second
	repub.RecordLifetime = time.Second * 5
	repub.AddName(publisher.Identity)

	proc := goprocess.Go(repub.Run)
	defer proc.Close()

	// now wait a couple seconds for it to fire
	time.Sleep(time.Second * 2)

	// we should be able to resolve them now
	if err := verifyResolution(nodes, name, p); err != nil {
		t.Fatal(err)
	}
}