diff --git a/pkg/channels/telegram/telegram.go b/pkg/channels/telegram/telegram.go index a11cf53b8..ef0a1ef30 100644 --- a/pkg/channels/telegram/telegram.go +++ b/pkg/channels/telegram/telegram.go @@ -175,17 +175,22 @@ func (c *TelegramChannel) Send(ctx context.Context, msg bus.OutboundMessage) err htmlContent := markdownToTelegramHTML(msg.Content) - // Typing/placeholder handled by Manager.preSend — just send the message - tgMsg := tu.Message(tu.ID(chatID), htmlContent) - tgMsg.ParseMode = telego.ModeHTML + // Split HTML content into chunks that fit within Telegram's message limit. + // Use 4000 to leave headroom for HTML tag overhead beyond the 4096 limit. + chunks := channels.SplitMessage(htmlContent, 4000) + + for _, chunk := range chunks { + tgMsg := tu.Message(tu.ID(chatID), chunk) + tgMsg.ParseMode = telego.ModeHTML - if _, err = c.bot.SendMessage(ctx, tgMsg); err != nil { - logger.ErrorCF("telegram", "HTML parse failed, falling back to plain text", map[string]any{ - "error": err.Error(), - }) - tgMsg.ParseMode = "" if _, err = c.bot.SendMessage(ctx, tgMsg); err != nil { - return fmt.Errorf("telegram send: %w", channels.ErrTemporary) + logger.ErrorCF("telegram", "HTML parse failed, falling back to plain text", map[string]any{ + "error": err.Error(), + }) + tgMsg.ParseMode = "" + if _, err = c.bot.SendMessage(ctx, tgMsg); err != nil { + return fmt.Errorf("telegram send: %w", channels.ErrTemporary) + } } }