media: bridge GIFs as documents rather than images

This allows them to be animated.

Closes PLAT-25990

Signed-off-by: Sumner Evans <sumner.evans@automattic.com>

pkg/connector/matrix.go

@@ -49,7 +49,7 @@ func (t *TelegramClient) transferMediaToTelegram(ctx context.Context, content *e
 		return nil, fmt.Errorf("failed to upload media to Telegram: %w", err)
 	}
 
-	if content.MsgType == event.MsgImage {
+	if content.MsgType == event.MsgImage && (content.Info.MimeType == "image/jpeg" || content.Info.MimeType == "image/png") {
 		return &tg.InputMediaUploadedPhoto{File: upload}, nil
 	}
 
@@ -100,7 +100,7 @@ func (t *TelegramClient) HandleMatrixMessage(ctx context.Context, msg *bridgev2.
 
 	var updates tg.UpdatesClass
 	switch msg.Content.MsgType {
-	case event.MsgText, event.MsgNotice:
+	case event.MsgText, event.MsgNotice, event.MsgEmote:
 		updates, err = t.client.API().MessagesSendMessage(ctx, &tg.MessagesSendMessageRequest{
 			Peer:      peer,
 			NoWebpage: noWebpage,

pkg/connector/matrixfmt/convert.go

@@ -82,7 +82,7 @@ func toTelegramEntity(br telegramfmt.BodyRange) tg.MessageEntityClass {
 }
 
 func Parse(ctx context.Context, parser *HTMLParser, content *event.MessageEventContent) (string, []tg.MessageEntityClass) {
-	if content.MsgType.IsMedia() && content.FileName == "" {
+	if content.MsgType.IsMedia() && (content.FileName == "" || content.FileName == content.Body) {
 		// The body is the filename.
 		return "", nil
 	}