X-Git-Url: http://git.giacomolli.uk/onechat/blobdiff_plain/a345df4e4bbf9dbaf3da1ce548896eef8f515de3..f80b058ae0550a56b4e62f8e65c2a74349b970e4:/botapi.go

diff --git a/botapi.go b/botapi.go
index d02aff0..f48465c 100644
--- a/botapi.go
+++ b/botapi.go
@@ -87,6 +87,17 @@ type botChat struct {
 	Type string `json:"type"`
 }
 
+// botEntity is a message entity of sendMessage: a part of the text with a
+// format, such as bold or a link. Offset and Length count UTF-16 code units.
+// URL is the target of a text_link, and Language the language of a pre.
+type botEntity struct {
+	Type     string `json:"type"`
+	Offset   int    `json:"offset"`
+	Length   int    `json:"length"`
+	URL      string `json:"url,omitempty"`
+	Language string `json:"language,omitempty"`
+}
+
 // botUser is the sender of a message.
 type botUser struct {
 	ID int64 `json:"id"`
@@ -119,16 +130,23 @@ func (b *botAPI) GetUpdates(ctx context.Context, offset int64) ([]botUpdate, err
 	return updates, err
 }
 
-// SendMessage sends text to chat as plain text, with no parse mode. A call that
-// takes longer than sendTimeout fails with errBotNetwork.
-func (b *botAPI) SendMessage(ctx context.Context, chat int64, text string) error {
+// SendMessage sends text to chat with the format of entities, with no parse
+// mode, so the text needs no escaping. With no entities, the text is plain. A
+// call that takes longer than sendTimeout fails with errBotNetwork.
+func (b *botAPI) SendMessage(ctx context.Context, chat int64, text string, entities []botEntity) error {
 	ctx, cancel := context.WithTimeout(ctx, b.sendTimeout)
 	defer cancel()
 
-	return b.call(ctx, "sendMessage", map[string]any{
+	params := map[string]any{
 		"chat_id": chat,
 		"text":    text,
-	}, nil)
+	}
+
+	if len(entities) > 0 {
+		params["entities"] = entities
+	}
+
+	return b.call(ctx, "sendMessage", params, nil)
 }
 
 // SendTyping shows the typing action in chat for about five seconds. A call