move gotd fork into repo. (#111)

- update to latest telegram layer
- remove some references to fields in tg.Entities that don't exist in
the schema
- originally added here:
https://github.com/beeper/td/commit/820929062a2ba0104397bc01235ab58a9cff780e
  - referenced here
-
https://github.com/mautrix/telegramgo/commit/124f0967ed195b5a380c9bd02e170ada9710dde3
-
https://github.com/mautrix/telegramgo/commit/4205047aab2e0639217148b5d125bfaab668bd8e

pkg/gotd/telegram/client_external_test.go

@@ -0,0 +1,120 @@
+package telegram_test
+
+import (
+	"context"
+	"os"
+	"strconv"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/go-faster/errors"
+	"github.com/stretchr/testify/require"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+	"go.uber.org/zap/zaptest"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/session"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tdsync"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram/dcs"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram/internal/e2etest"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/testutil"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tg"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/transport"
+)
+
+func tryConnect(ctx context.Context, opts telegram.Options) error {
+	client := telegram.NewClient(telegram.TestAppID, telegram.TestAppHash, opts)
+	return client.Run(ctx, func(ctx context.Context) error {
+		_, err := client.API().HelpGetNearestDC(ctx)
+		return err
+	})
+}
+
+func testTransportExternal(resolver dcs.Resolver, storage session.Storage) func(t *testing.T) {
+	return func(t *testing.T) {
+		ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
+		defer cancel()
+
+		log := zaptest.NewLogger(t)
+		defer func() { _ = log.Sync() }()
+
+		require.NoError(t, tryConnect(ctx, telegram.Options{
+			Logger:         log.Named("client"),
+			SessionStorage: storage,
+			Resolver:       resolver,
+		}))
+	}
+}
+
+func TestExternalE2EConnect(t *testing.T) {
+	testutil.SkipExternal(t)
+	// To re-use session.
+	storage := &session.StorageMemory{}
+
+	tcp := func(p dcs.Protocol) func(t *testing.T) {
+		return testTransportExternal(dcs.Plain(dcs.PlainOptions{Protocol: p}), storage)
+	}
+
+	t.Run("Abridged", tcp(transport.Abridged))
+	t.Run("Intermediate", tcp(transport.Intermediate))
+	t.Run("PaddedIntermediate", tcp(transport.PaddedIntermediate))
+	t.Run("Full", tcp(transport.Full))
+
+	wsOpts := dcs.WebsocketOptions{}
+	t.Run("Websocket", testTransportExternal(dcs.Websocket(wsOpts), storage))
+}
+
+const dialog = `— Да?
+— Алё!
+— Да да?
+— Ну как там с деньгами?
+— А?
+— Как с деньгами-то там?
+— Чё с деньгами?
+— Чё?
+— Куда ты звонишь?
+— Тебе звоню.
+— Кому?
+— Ну тебе.`
+
+func TestExternalE2EUsersDialog(t *testing.T) {
+	testutil.SkipExternal(t)
+	if v, _ := strconv.ParseBool(os.Getenv("GOTD_E2E_DIALOGS_BROKEN")); v {
+		// TODO(ernado): enable when fixed
+		t.Skip("Dialogs are broken.")
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
+	defer cancel()
+	log := zaptest.NewLogger(t).WithOptions(zap.IncreaseLevel(zapcore.InfoLevel))
+
+	cfg := e2etest.TestOptions{
+		Logger: log,
+	}
+	suite := e2etest.NewSuite(t, cfg)
+
+	auth := make(chan *tg.User, 1)
+	g := tdsync.NewLogGroup(ctx, log.Named("group"))
+
+	g.Go("echobot", func(ctx context.Context) error {
+		if err := e2etest.NewEchoBot(suite, auth).Run(ctx); err != nil {
+			return errors.Wrap(err, "echo bot")
+		}
+		return nil
+	})
+
+	user, ok := <-auth
+	if ok {
+		g.Go("terentyev", func(ctx context.Context) error {
+			defer g.Cancel()
+			if err := e2etest.NewUser(suite, strings.Split(dialog, "\n"), user.Username).Run(ctx); err != nil {
+				return errors.Wrap(err, "user")
+			}
+			return nil
+		})
+	}
+
+	require.NoError(t, g.Wait())
+}