Link: Open unsupported t.me links (#4880)

src/global/actions/api/chats.ts

@@ -1244,7 +1244,7 @@ addActionHandler('openChatByPhoneNumber', async (global, actions, payload): Prom
   }
 });
 
-addActionHandler('openTelegramLink', (global, actions, payload): ActionReturnType => {
+addActionHandler('openTelegramLink', async (global, actions, payload): Promise<void> => {
   const {
     url,
     tabId = getCurrentTabId(),
@@ -1361,6 +1361,10 @@ addActionHandler('openTelegramLink', (global, actions, payload): ActionReturnTyp
   const messageId = part3 ? Number(part3) : undefined;
   const commentId = params.comment ? Number(params.comment) : undefined;
 
+  const isWebApp = await checkWebAppExists(global, part1, part2);
+
+  const shouldTryOpenChat = (part1 && !part2) || isWebApp;
+
   if (params.hasOwnProperty('voicechat') || params.hasOwnProperty('livestream')) {
     joinVoiceChatByLink({
       username: part1,
@@ -1410,7 +1414,7 @@ addActionHandler('openTelegramLink', (global, actions, payload): ActionReturnTyp
       startParam: params.startattach || params.startapp,
       tabId,
     });
-  } else {
+  } else if (shouldTryOpenChat) {
     openChatByUsernameAction({
       username: part1,
       messageId: messageId || Number(chatOrChannelPostId),
@@ -1423,6 +1427,10 @@ addActionHandler('openTelegramLink', (global, actions, payload): ActionReturnTyp
       originalParts: [part1, part2, part3],
       tabId,
     });
+  } else {
+    actions.openUrl({
+      url, shouldSkipModal: true, tabId, ignoreDeepLinks: true,
+    });
   }
 });
 
@@ -2954,6 +2962,20 @@ export async function fetchChatByUsername<T extends GlobalState>(
   return chat;
 }
 
+export async function checkWebAppExists<T extends GlobalState>(
+  global: T, botName: string, appName: string,
+) {
+  if (!botName || !appName) return false;
+  global = getGlobal();
+  const chatByUsername = await fetchChatByUsername(global, botName);
+  const bot = chatByUsername && selectUser(global, chatByUsername.id);
+  const botApp = bot && await callApi('fetchBotApp', {
+    bot,
+    appName,
+  });
+  return Boolean(botApp);
+}
+
 export async function fetchChatByPhoneNumber<T extends GlobalState>(global: T, phoneNumber: string) {
   global = getGlobal();
   const localUser = selectUserByPhoneNumber(global, phoneNumber);

src/global/actions/api/messages.ts

@@ -1752,10 +1752,12 @@ addActionHandler('readAllMentions', (global, actions, payload): ActionReturnType
 });
 
 addActionHandler('openUrl', (global, actions, payload): ActionReturnType => {
-  const { url, shouldSkipModal, tabId = getCurrentTabId() } = payload;
+  const {
+    url, shouldSkipModal, ignoreDeepLinks, tabId = getCurrentTabId(),
+  } = payload;
   const urlWithProtocol = ensureProtocol(url)!;
 
-  if (isDeepLink(urlWithProtocol)) {
+  if (!ignoreDeepLinks && isDeepLink(urlWithProtocol)) {
     actions.closeStoryViewer({ tabId });
     actions.closePaymentModal({ tabId });
 

src/global/types.ts

@@ -3050,6 +3050,7 @@ export interface ActionPayloads {
   openUrl: {
     url: string;
     shouldSkipModal?: boolean;
+    ignoreDeepLinks?: boolean;
   } & WithTabId;
   openMapModal: {
     geoPoint: ApiGeoPoint;