Support t.me/joinchat (#1035)

src/api/gramjs/methods/chats.ts

@@ -885,6 +885,22 @@ export async function migrateChat(chat: ApiChat) {
   return buildApiChatFromPreview(result.chats[1]);
 }
 
+export async function openChatByInvite(hash: string) {
+  const result = await invokeRequest(new GramJs.messages.CheckChatInvite({ hash }));
+
+  if (!result) {
+    return undefined;
+  }
+
+  if (result instanceof GramJs.ChatInvite) {
+    await invokeRequest(new GramJs.messages.ImportChatInvite({ hash }), true);
+
+    return undefined;
+  } else {
+    return buildApiChatFromPreview(result.chat);
+  }
+}
+
 function preparePeers(
   result: GramJs.messages.Dialogs | GramJs.messages.DialogsSlice | GramJs.messages.PeerDialogs,
 ) {

src/api/gramjs/methods/index.ts

@@ -12,7 +12,7 @@ export {
   fetchChatFolders, editChatFolder, deleteChatFolder, fetchRecommendedChatFolders,
   getChatByUsername, togglePreHistoryHidden, updateChatDefaultBannedRights, updateChatMemberBannedRights,
   updateChatTitle, updateChatAbout, toggleSignatures, updateChatAdmin, fetchGroupsForDiscussion, setDiscussionGroup,
-  migrateChat,
+  migrateChat, openChatByInvite,
 } from './chats';
 
 export {

src/components/common/SafeLink.tsx

@@ -3,7 +3,7 @@ import { withGlobal } from '../../lib/teact/teactn';
 import convertPunycode from '../../lib/punycode';
 import { GlobalActions } from '../../global/types';
 
-import { DEBUG, RE_TME_LINK } from '../../config';
+import { DEBUG, RE_TME_INVITE_LINK, RE_TME_LINK } from '../../config';
 import { pick } from '../../util/iteratees';
 import buildClassName from '../../util/buildClassName';
 
@@ -26,7 +26,7 @@ const SafeLink: FC<OwnProps & DispatchProps> = ({
   const handleClick = useCallback((e: React.MouseEvent<HTMLAnchorElement, MouseEvent>) => {
     if (
       e.ctrlKey || e.altKey || e.shiftKey || e.metaKey
-      || !url || !url.match(RE_TME_LINK)
+      || !url || (!url.match(RE_TME_LINK) && !url.match(RE_TME_INVITE_LINK))
     ) {
       return true;
     }

src/components/common/WebLink.tsx

@@ -10,6 +10,7 @@ import { formatPastTimeShort } from '../../util/dateFormat';
 
 import Media from './Media';
 import Link from '../ui/Link';
+import SafeLink from './SafeLink';
 
 import './WebLink.scss';
 
@@ -75,9 +76,13 @@ const WebLink: FC<OwnProps> = ({ message, senderTitle, onMessageClick }) => {
         {truncatedDescription && (
           <Link className="site-description" onClick={handleMessageClick}>{renderText(truncatedDescription)}</Link>
         )}
-        <a href={url} target="_blank" rel="noopener noreferrer" className="site-name">
+        <SafeLink
+          url={url}
+          className="site-name"
+          text=""
+        >
           {url.replace('mailto:', '') || displayUrl}
-        </a>
+        </SafeLink>
         {senderTitle && <div className="sender-name">{renderText(senderTitle)}</div>}
       </div>
       {senderTitle && (

src/config.ts

@@ -106,6 +106,7 @@ export const CONTENT_TYPES_FOR_QUICK_UPLOAD = 'image/png,image/gif,image/jpeg,vi
 // eslint-disable-next-line max-len
 export const RE_LINK_TEMPLATE = '((ftp|https?):\\/\\/)?((www\\.)?[-a-zA-Z0-9@:%._+~#=]{1,256}\\.[a-zA-Z0-9()]{1,6})\\b([-a-zA-Z0-9()@:%_+.~#?&/=]*)';
 export const RE_TME_LINK = /^(?:https?:\/\/)?(?:t\.me\/)([\d\w_]+)(?:\/([\d]+))?$/gm;
+export const RE_TME_INVITE_LINK = /^(?:https?:\/\/)?(?:t\.me\/joinchat\/)([\d\w_]+)?$/gm;
 
 // MTProto constants
 export const SERVICE_NOTIFICATIONS_USER_ID = 777000;

src/lib/gramjs/tl/apiTl.js

@@ -901,6 +901,8 @@ messages.getStickers#43d4f2c emoticon:string hash:int = messages.Stickers;
 messages.getAllStickers#1c9618b1 hash:int = messages.AllStickers;
 messages.getWebPagePreview#8b68b0cc flags:# message:string entities:flags.3?Vector<MessageEntity> = MessageMedia;
 messages.exportChatInvite#df7534c peer:InputPeer = ExportedChatInvite;
+messages.checkChatInvite#3eadb1bb hash:string = ChatInvite;
+messages.importChatInvite#6c50051c hash:string = Updates;
 messages.getStickerSet#2619a90e stickerset:InputStickerSet = messages.StickerSet;
 messages.installStickerSet#c78fe460 stickerset:InputStickerSet archived:Bool = messages.StickerSetInstallResult;
 messages.uninstallStickerSet#f96e55de stickerset:InputStickerSet = Bool;

src/lib/gramjs/tl/static/api.reduced.tl

@@ -901,6 +901,8 @@ messages.getStickers#43d4f2c emoticon:string hash:int = messages.Stickers;
 messages.getAllStickers#1c9618b1 hash:int = messages.AllStickers;
 messages.getWebPagePreview#8b68b0cc flags:# message:string entities:flags.3?Vector<MessageEntity> = MessageMedia;
 messages.exportChatInvite#df7534c peer:InputPeer = ExportedChatInvite;
+messages.checkChatInvite#3eadb1bb hash:string = ChatInvite;
+messages.importChatInvite#6c50051c hash:string = Updates;
 messages.getStickerSet#2619a90e stickerset:InputStickerSet = messages.StickerSet;
 messages.installStickerSet#c78fe460 stickerset:InputStickerSet archived:Bool = messages.StickerSetInstallResult;
 messages.uninstallStickerSet#f96e55de stickerset:InputStickerSet = Bool;

src/modules/actions/api/bots.ts

@@ -2,7 +2,7 @@ import { addReducer, getDispatch } from '../../../lib/teact/teactn';
 
 import { ApiChat } from '../../../api/types';
 
-import { RE_TME_LINK } from '../../../config';
+import { RE_TME_INVITE_LINK, RE_TME_LINK } from '../../../config';
 import { callApi } from '../../../api/gramjs';
 import { selectChatMessage, selectCurrentChat } from '../../selectors';
 
@@ -14,7 +14,7 @@ addReducer('clickInlineButton', (global, actions, payload) => {
       actions.sendBotCommand({ command: button.value });
       break;
     case 'url':
-      if (button.value.match(RE_TME_LINK)) {
+      if (button.value.match(RE_TME_INVITE_LINK) || button.value.match(RE_TME_LINK)) {
         actions.openTelegramLink({ url: button.value });
       } else {
         window.open(button.value);

src/modules/actions/api/chats.ts

@@ -12,6 +12,7 @@ import {
   ARCHIVED_FOLDER_ID,
   TOP_CHAT_MESSAGES_PRELOAD_LIMIT,
   CHAT_LIST_LOAD_SLICE,
+  RE_TME_INVITE_LINK,
   RE_TME_LINK,
   TIPS_USERNAME,
 } from '../../../config';
@@ -380,12 +381,28 @@ addReducer('toggleChatUnread', (global, actions, payload) => {
 
 addReducer('openTelegramLink', (global, actions, payload) => {
   const { url } = payload!;
-  const match = RE_TME_LINK.exec(url)!;
+  let match = RE_TME_INVITE_LINK.exec(url);
 
-  const username = match[1];
-  const channelPostId = match[2] ? Number(match[2]) : undefined;
+  if (match) {
+    const hash = match[1];
 
-  void openChatByUsername(actions, username, channelPostId);
+    (async () => {
+      const chat = await callApi('openChatByInvite', hash);
+
+      if (!chat) {
+        return;
+      }
+
+      actions.openChat({ id: chat.id });
+    })();
+  } else {
+    match = RE_TME_LINK.exec(url)!;
+
+    const username = match[1];
+    const channelPostId = match[2] ? Number(match[2]) : undefined;
+
+    void openChatByUsername(actions, username, channelPostId);
+  }
 });
 
 addReducer('openChatByUsername', (global, actions, payload) => {

src/util/getReadableErrorText.ts

@@ -55,6 +55,11 @@ const READABLE_ERROR_MESSAGES: Record<string, string> = {
   USER_KICKED: 'This user was kicked from this supergroup/channel',
   USER_NOT_MUTUAL_CONTACT: 'The provided user is not a mutual contact',
   USER_PRIVACY_RESTRICTED: 'The user\'s privacy settings do not allow you to do this',
+  INVITE_HASH_EMPTY: 'The invite hash is empty',
+  INVITE_HASH_EXPIRED: 'The invite link has expired',
+  INVITE_HASH_INVALID: 'The invite hash is invalid',
+  CHANNELS_TOO_MUCH: 'You have joined too many channels/supergroups',
+  USER_ALREADY_PARTICIPANT: 'You already in the group',
 };
 
 export default function getReadableErrorText(error: ApiError) {