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/fileid/e2e_test.go

@@ -0,0 +1,87 @@
+package fileid_test
+
+import (
+	"context"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/go-faster/errors"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zaptest"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/fileid"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/telegram/downloader"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/testutil"
+)
+
+func runBot(ctx context.Context, token, fileID string, logger *zap.Logger) error {
+	bot := telegram.NewClient(telegram.TestAppID, telegram.TestAppHash, telegram.Options{
+		Logger: logger,
+	})
+	d := downloader.NewDownloader()
+
+	return bot.Run(ctx, func(ctx context.Context) error {
+		auth, err := bot.Auth().Bot(ctx, token)
+		if err != nil {
+			return errors.Wrap(err, "auth bot")
+		}
+		user, ok := auth.User.AsNotEmpty()
+		if !ok {
+			return errors.Errorf("unexpected type %T", auth.User)
+		}
+		_ = user
+
+		decoded, err := fileid.DecodeFileID(fileID)
+		if err != nil {
+			return errors.Wrap(err, "decode FileID")
+		}
+
+		loc, ok := decoded.AsInputFileLocation()
+		if !ok {
+			return errors.Errorf("can't map %q", fileID)
+		}
+
+		filename := "file.dat"
+		switch decoded.Type {
+		case fileid.Thumbnail, fileid.ProfilePhoto, fileid.Photo:
+			filename = "file.jpg"
+		case fileid.Video,
+			fileid.Animation,
+			fileid.VideoNote:
+			filename = "file.mp4"
+		case fileid.Audio:
+			filename = "file.mp3"
+		case fileid.Voice:
+			filename = "file.ogg"
+		case fileid.Sticker:
+			filename = "file.png"
+		}
+
+		if _, err := d.Download(bot.API(), loc).ToPath(ctx, filename); err != nil {
+			return errors.Wrap(err, "download")
+		}
+		return nil
+	})
+}
+
+func TestExternalE2ECheckFileID(t *testing.T) {
+	testutil.SkipExternal(t)
+	token := os.Getenv("GOTD_E2E_BOT_TOKEN")
+	if token == "" {
+		t.Skip("Set GOTD_E2E_BOT_TOKEN env to run test.")
+	}
+	fileID := os.Getenv("GOTD_E2E_FILE_ID")
+	if fileID == "" {
+		t.Skip("Set GOTD_E2E_FILE_ID env to run test.")
+	}
+	logger := zaptest.NewLogger(t)
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
+	defer cancel()
+
+	if err := runBot(ctx, token, fileID, logger.Named("bot")); err != nil {
+		t.Error(err)
+	}
+}