// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.

package kademlia_test

import (
	"context"
	"testing"
	"time"

	"github.com/google/go-cmp/cmp"
	"github.com/stretchr/testify/require"
	"go.uber.org/zap/zaptest"

	"storj.io/storj/internal/memory"
	"storj.io/storj/internal/testcontext"
	"storj.io/storj/internal/testplanet"
	"storj.io/storj/pkg/kademlia"
	"storj.io/storj/pkg/pb"
	"storj.io/storj/pkg/peertls/tlsopts"
	"storj.io/storj/pkg/transport"
)

func TestFetchPeerIdentity(t *testing.T) {
	testplanet.Run(t, testplanet.Config{
		SatelliteCount: 1, StorageNodeCount: 1, UplinkCount: 0,
	}, func(t *testing.T, ctx *testcontext.Context, planet *testplanet.Planet) {
		sat := planet.Satellites[0]
		peerID, err := planet.StorageNodes[0].Kademlia.Service.FetchPeerIdentity(ctx, sat.ID())
		require.NoError(t, err)
		require.Equal(t, sat.ID(), peerID.ID)
		require.True(t, sat.Identity.Leaf.Equal(peerID.Leaf))
		require.True(t, sat.Identity.CA.Equal(peerID.CA))
	})
}

func TestRequestInfo(t *testing.T) {
	testplanet.Run(t, testplanet.Config{
		SatelliteCount: 1, StorageNodeCount: 1, UplinkCount: 0,
	}, func(t *testing.T, ctx *testcontext.Context, planet *testplanet.Planet) {
		node := planet.StorageNodes[0]
		info, err := planet.Satellites[0].Kademlia.Service.FetchInfo(ctx, node.Local().Node)
		require.NoError(t, err)
		require.Equal(t, node.Local().Type, info.GetType())
		require.Empty(t, cmp.Diff(node.Local().Operator, *info.GetOperator(), cmp.Comparer(pb.Equal)))
		require.Empty(t, cmp.Diff(node.Local().Capacity, *info.GetCapacity(), cmp.Comparer(pb.Equal)))
		require.Empty(t, cmp.Diff(node.Local().Version, *info.GetVersion(), cmp.Comparer(pb.Equal)))
	})
}

func TestPingTimeout(t *testing.T) {
	testplanet.Run(t, testplanet.Config{
		SatelliteCount: 1, StorageNodeCount: 4, UplinkCount: 0,
	}, func(t *testing.T, ctx *testcontext.Context, planet *testplanet.Planet) {

		self := planet.StorageNodes[0]
		routingTable := self.Kademlia.RoutingTable

		tlsOpts, err := tlsopts.NewOptions(self.Identity, tlsopts.Config{})
		require.NoError(t, err)

		self.Transport = transport.NewClientWithTimeout(tlsOpts, 1*time.Millisecond)

		network := &transport.SimulatedNetwork{
			DialLatency:    300 * time.Second,
			BytesPerSecond: 1 * memory.KB,
		}

		slowClient := network.NewClient(self.Transport)
		require.NotNil(t, slowClient)

		newService, err := kademlia.NewService(zaptest.NewLogger(t), slowClient, routingTable, kademlia.Config{})
		require.NoError(t, err)

		target := pb.Node{
			Id: planet.StorageNodes[2].ID(),
			Address: &pb.NodeAddress{
				Transport: pb.NodeTransport_TCP_TLS_GRPC,
				Address:   planet.StorageNodes[2].Addr(),
			},
		}

		_, err = newService.Ping(ctx, target)
		require.Error(t, err, context.DeadlineExceeded)
		require.True(t, kademlia.NodeErr.Has(err) && transport.Error.Has(err))

	})
}