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/message/upload.go

@@ -0,0 +1,91 @@
+package message
+
+import (
+	"context"
+
+	"github.com/go-faster/errors"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tg"
+)
+
+// Upload creates new UploadBuilder to upload and send attachments.
+// Given option will be called only once, even if you call upload functions.
+func (b *Builder) Upload(upd UploadOption) *UploadBuilder {
+	return &UploadBuilder{
+		builder: b.copy(),
+		option:  upd,
+	}
+}
+
+// UploadBuilder is an attachment uploading helper.
+type UploadBuilder struct {
+	builder *Builder
+	option  UploadOption
+}
+
+func (u *UploadBuilder) file(ctx context.Context) (tg.InputFileClass, error) {
+	return u.option.apply(ctx, uploadBuilder{upload: u.builder.sender.uploader})
+}
+
+// AsInputFile uploads and returns uploaded file entity.
+func (u *UploadBuilder) AsInputFile(ctx context.Context) (tg.InputFileClass, error) {
+	return u.file(ctx)
+}
+
+func (u *UploadBuilder) send(
+	ctx context.Context,
+	using func(ctx context.Context, file tg.InputFileClass, caption ...StyledTextOption) (tg.UpdatesClass, error),
+	caption []StyledTextOption,
+) (tg.UpdatesClass, error) {
+	f, err := u.file(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "upload")
+	}
+
+	return using(ctx, f, caption...)
+}
+
+// Photo uploads and sends photo.
+func (u *UploadBuilder) Photo(ctx context.Context, caption ...StyledTextOption) (tg.UpdatesClass, error) {
+	return u.send(ctx, u.builder.UploadedPhoto, caption)
+}
+
+// Audio uploads and sends audio file.
+func (u *UploadBuilder) Audio(ctx context.Context, caption ...StyledTextOption) (tg.UpdatesClass, error) {
+	return u.send(ctx, u.builder.Audio, caption)
+}
+
+// Voice uploads and sends voice message.
+func (u *UploadBuilder) Voice(ctx context.Context) (tg.UpdatesClass, error) {
+	f, err := u.file(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "upload")
+	}
+
+	return u.builder.Voice(ctx, f)
+}
+
+// Video uploads and sends video.
+func (u *UploadBuilder) Video(ctx context.Context, caption ...StyledTextOption) (tg.UpdatesClass, error) {
+	return u.send(ctx, u.builder.Video, caption)
+}
+
+// RoundVideo uploads and sends round video.
+func (u *UploadBuilder) RoundVideo(ctx context.Context, caption ...StyledTextOption) (tg.UpdatesClass, error) {
+	return u.send(ctx, u.builder.RoundVideo, caption)
+}
+
+// GIF uploads and sends gif file.
+func (u *UploadBuilder) GIF(ctx context.Context, caption ...StyledTextOption) (tg.UpdatesClass, error) {
+	return u.send(ctx, u.builder.GIF, caption)
+}
+
+// Sticker uploads and sends sticker.
+func (u *UploadBuilder) Sticker(ctx context.Context, caption ...StyledTextOption) (tg.UpdatesClass, error) {
+	return u.send(ctx, u.builder.UploadedSticker, caption)
+}
+
+// File uploads and sends plain file.
+func (u *UploadBuilder) File(ctx context.Context, caption ...StyledTextOption) (tg.UpdatesClass, error) {
+	return u.send(ctx, u.builder.File, caption)
+}