Add Telegram reply button

server.js

@@ -1169,7 +1169,10 @@ async function notifyTelegramVisitorMessage(conversation, messageId) {
   const sent = await telegramSendMessage(settings, {
     text: telegramVisitorMessageText(details.conversation, message, attachmentCount),
     replyMarkup: {
-      inline_keyboard: [[{ text: "Otevrit BO", url: `${PUBLIC_BASE_URL}/admin` }]]
+      inline_keyboard: [[
+        { text: "Reply", callback_data: `reply:${conversation.public_id}` },
+        { text: "Otevrit BO", url: `${PUBLIC_BASE_URL}/admin` }
+      ]]
     }
   });
   const telegramMessageId = sent?.result?.message_id;
@@ -1183,6 +1186,10 @@ async function notifyTelegramVisitorMessage(conversation, messageId) {
 }
 
 async function handleTelegramUpdate(update, settings) {
+  if (update?.callback_query) {
+    await handleTelegramCallback(update.callback_query, settings);
+    return;
+  }
   const message = update?.message;
   if (!message || !message.text || !message.reply_to_message) return;
   const chatId = String(message.chat?.id || "");
@@ -1212,6 +1219,28 @@ async function handleTelegramUpdate(update, settings) {
   await telegramSendMessage(settings, { chatId, text: "MaalFlows: odpoved odeslana zakaznikovi." });
 }
 
+async function handleTelegramCallback(callbackQuery, settings) {
+  const data = String(callbackQuery?.data || "");
+  if (!data.startsWith("reply:")) return;
+  const chatId = String(callbackQuery.message?.chat?.id || "");
+  if (String(settings.chatId) && chatId !== String(settings.chatId)) return;
+  const conversation = findConversation(data.slice("reply:".length));
+  await telegramAnswerCallback(settings, callbackQuery.id, conversation ? "Napis odpoved." : "Konverzace nenalezena.");
+  if (!conversation) return;
+  const sent = await telegramSendMessage(settings, {
+    chatId,
+    text: "Napis odpoved pro zakaznika:",
+    replyMarkup: { force_reply: true, selective: true }
+  });
+  const promptMessageId = sent?.result?.message_id;
+  if (!promptMessageId) return;
+  db.prepare(`
+    INSERT OR REPLACE INTO telegram_message_links
+      (site_id, conversation_id, telegram_chat_id, telegram_message_id, source_message_id)
+    VALUES (?, ?, ?, ?, ?)
+  `).run(conversation.site_id, conversation.id, chatId, promptMessageId, null);
+}
+
 async function telegramSendMessage(settings, options) {
   const token = settings.botToken;
   const chatId = options.chatId || settings.chatId;
@@ -1232,6 +1261,23 @@ async function telegramSendMessage(settings, options) {
   return data;
 }
 
+async function telegramAnswerCallback(settings, callbackQueryId, text) {
+  if (!callbackQueryId) return;
+  const response = await fetch(`https://api.telegram.org/bot${settings.botToken}/answerCallbackQuery`, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({
+      callback_query_id: callbackQueryId,
+      text
+    })
+  });
+  const data = await response.json().catch(() => ({}));
+  if (!response.ok || data.ok === false) {
+    throw new Error(data.description || `Telegram callback HTTP ${response.status}`);
+  }
+  return data;
+}
+
 async function telegramSetWebhook(settings) {
   const response = await fetch(`https://api.telegram.org/bot${settings.botToken}/setWebhook`, {
     method: "POST",