fix: telegram sendPayload and plugin auth (#1917) (thanks @JoshuaLelon)

src/channels/plugins/outbound/telegram.ts

@@ -18,6 +18,7 @@ function parseThreadId(threadId?: string | number | null) {
   const parsed = Number.parseInt(trimmed, 10);
   return Number.isFinite(parsed) ? parsed : undefined;
 }
+
 export const telegramOutbound: ChannelOutboundAdapter = {
   deliveryMode: "direct",
   chunker: markdownToTelegramHtmlChunks,
@@ -54,20 +55,42 @@ export const telegramOutbound: ChannelOutboundAdapter = {
     const send = deps?.sendTelegram ?? sendMessageTelegram;
     const replyToMessageId = parseReplyToMessageId(replyToId);
     const messageThreadId = parseThreadId(threadId);
-
-    // Extract Telegram-specific data from channelData
     const telegramData = payload.channelData?.telegram as
       | { buttons?: Array<Array<{ text: string; callback_data: string }>> }
       | undefined;
-
-    const result = await send(to, payload.text ?? "", {
+    const text = payload.text ?? "";
+    const mediaUrls = payload.mediaUrls?.length
+      ? payload.mediaUrls
+      : payload.mediaUrl
+        ? [payload.mediaUrl]
+        : [];
+    const baseOpts = {
       verbose: false,
-      textMode: "html",
+      textMode: "html" as const,
       messageThreadId,
       replyToMessageId,
       accountId: accountId ?? undefined,
-      buttons: telegramData?.buttons,
-    });
-    return { channel: "telegram", ...result };
+    };
+
+    if (mediaUrls.length === 0) {
+      const result = await send(to, text, {
+        ...baseOpts,
+        buttons: telegramData?.buttons,
+      });
+      return { channel: "telegram", ...result };
+    }
+
+    // Telegram allows reply_markup on media; attach buttons only to first send.
+    let finalResult: Awaited<ReturnType<typeof send>> | undefined;
+    for (let i = 0; i < mediaUrls.length; i += 1) {
+      const mediaUrl = mediaUrls[i];
+      const isFirst = i === 0;
+      finalResult = await send(to, isFirst ? text : "", {
+        ...baseOpts,
+        mediaUrl,
+        ...(isFirst ? { buttons: telegramData?.buttons } : {}),
+      });
+    }
+    return { channel: "telegram", ...(finalResult ?? { messageId: "unknown", chatId: to }) };
   },
 };