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/audio.go

@@ -0,0 +1,99 @@
+package message
+
+import (
+	"context"
+	"time"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tg"
+)
+
+// Audio creates new AudioDocumentBuilder to create audio attachment.
+func (u *UploadedDocumentBuilder) Audio() *AudioDocumentBuilder {
+	b := u
+	if u.doc.MimeType == "" {
+		b = u.MIME(DefaultAudioMIME)
+	}
+	return &AudioDocumentBuilder{
+		doc:  b,
+		attr: tg.DocumentAttributeAudio{},
+	}
+}
+
+// Voice creates new AudioDocumentBuilder to create voice attachment.
+func (u *UploadedDocumentBuilder) Voice() *AudioDocumentBuilder {
+	return u.MIME(DefaultVoiceMIME).Audio().Voice()
+}
+
+// AudioDocumentBuilder is an Audio media option.
+type AudioDocumentBuilder struct {
+	doc  *UploadedDocumentBuilder
+	attr tg.DocumentAttributeAudio
+}
+
+// Voice sets flag to mark this audio as voice message.
+func (u *AudioDocumentBuilder) Voice() *AudioDocumentBuilder {
+	u.attr.Voice = true
+	return u
+}
+
+// Duration sets duration of audio file.
+func (u *AudioDocumentBuilder) Duration(duration time.Duration) *AudioDocumentBuilder {
+	return u.DurationSeconds(int(duration.Seconds()))
+}
+
+// DurationSeconds sets duration in seconds.
+func (u *AudioDocumentBuilder) DurationSeconds(duration int) *AudioDocumentBuilder {
+	u.attr.Duration = duration
+	return u
+}
+
+// Title sets name of song.
+func (u *AudioDocumentBuilder) Title(title string) *AudioDocumentBuilder {
+	u.attr.Title = title
+	return u
+}
+
+// Performer sets performer.
+func (u *AudioDocumentBuilder) Performer(performer string) *AudioDocumentBuilder {
+	u.attr.Performer = performer
+	return u
+}
+
+// Waveform sets waveform representation of the voice message.
+func (u *AudioDocumentBuilder) Waveform(waveform []byte) *AudioDocumentBuilder {
+	u.attr.Waveform = waveform
+	return u
+}
+
+// apply implements MediaOption.
+func (u *AudioDocumentBuilder) apply(ctx context.Context, b *multiMediaBuilder) error {
+	return u.doc.Attributes(&u.attr).apply(ctx, b)
+}
+
+// applyMulti implements MultiMediaOption.
+func (u *AudioDocumentBuilder) applyMulti(ctx context.Context, b *multiMediaBuilder) error {
+	return u.doc.Attributes(&u.attr).applyMulti(ctx, b)
+}
+
+// Audio adds audio attachment.
+func Audio(file tg.InputFileClass, caption ...StyledTextOption) *AudioDocumentBuilder {
+	return UploadedDocument(file, caption...).Audio()
+}
+
+// Voice adds voice attachment.
+func Voice(file tg.InputFileClass) *AudioDocumentBuilder {
+	return UploadedDocument(file).Voice()
+}
+
+// Audio sends audio file.
+func (b *Builder) Audio(
+	ctx context.Context,
+	file tg.InputFileClass, caption ...StyledTextOption,
+) (tg.UpdatesClass, error) {
+	return b.Media(ctx, Audio(file, caption...))
+}
+
+// Voice sends voice message.
+func (b *Builder) Voice(ctx context.Context, file tg.InputFileClass) (tg.UpdatesClass, error) {
+	return b.Media(ctx, Voice(file))
+}