package test

import (
	"reflect"
	"testing"
	"time"

	peering "forge.cadoles.com/wpetit/go-http-peering"
	"forge.cadoles.com/wpetit/go-http-peering/client"
	"forge.cadoles.com/wpetit/go-http-peering/crypto"
	peeringCrypto "forge.cadoles.com/wpetit/go-http-peering/crypto"
	"forge.cadoles.com/wpetit/go-http-peering/memory"
	"forge.cadoles.com/wpetit/go-http-peering/server"
)

func TestUpdate(t *testing.T) {

	if t.Skipped() {
		t.SkipNow()
	}

	store := memory.NewStore()
	serverPK := mustGeneratePrivateKey()
	clientPK := mustGeneratePrivateKey()
	peerID := peering.NewPeerID()

	// Generate a server token for the peer client
	serverToken, err := peeringCrypto.CreateServerToken(serverPK, "test", peerID)
	if err != nil {
		t.Fatal(err)
	}

	advertise := server.AdvertiseHandler(store, &serverPK.PublicKey)
	// Create advertise client
	c := client.New(
		client.WithHTTPClient(NewHTTPClientMock(advertise)),
		client.WithPrivateKey(clientPK),
		client.WithServerToken(serverToken),
	)

	// Advertise client with empty peer attributes
	attrs := peering.PeerAttributes{}
	if err := c.Advertise(attrs); err != nil {
		t.Fatal(err)
	}

	// Accept peer
	if err := store.Accept(peerID); err != nil {
		t.Error(err)
	}

	// Create authenticated update handler
	update := server.Authenticate(store, &serverPK.PublicKey)(server.UpdateHandler(store))

	// Create update client
	c = client.New(
		client.WithHTTPClient(NewHTTPClientMock(update)),
		client.WithPrivateKey(clientPK),
		client.WithServerToken(serverToken),
	)

	// Update local attributes
	attrs["Label"] = "Foo Bar"

	// Update attributes
	if err := c.UpdateAttributes(attrs); err != nil {
		t.Fatal(err)
	}

	// Retrieve peer from store
	peer, err := store.Get(peerID)
	if err != nil {
		t.Fatal(err)
	}

	// Assert that peer's ID did not change
	if g, e := peer.ID, peerID; g != e {
		t.Errorf("peer.ID: got '%v', expected '%v'", g, e)
	}

	// Assert that stored attributes are the same as the local ones
	if g, e := peer.Attributes, attrs; !reflect.DeepEqual(g, e) {
		t.Errorf("peer.Attributes: got '%v', expected '%v'", g, e)
	}

	// Assert that lastContact has changed
	var defaultTime time.Time
	if peer.LastContact == defaultTime {
		t.Error("peer.LastContact should not be time.Time zero value")
	}

	pem, err := crypto.EncodePublicKeyToPEM(clientPK.Public())
	if err != nil {
		t.Fatal(err)
	}

	if g, e := peer.PublicKey, pem; !reflect.DeepEqual(g, e) {
		t.Errorf("peer.PublicKey: got '%v', expected '%v'", g, e)
	}

}