Fix loading messages if list is too short

Show 'migrated from' & 'migrated to' service messages

src/components/chat/bubbles.ts

@@ -73,7 +73,8 @@ import { EmoticonsDropdown } from "../emoticonsDropdown";
 const USE_MEDIA_TAILS = false;
 const IGNORE_ACTIONS: Set<Message.messageService['action']['_']> = new Set([
   'messageActionHistoryClear',
-  'messageActionChatCreate'
+  'messageActionChatCreate'/* ,
+  'messageActionChannelMigrateFrom' */
 ]);
 
 const TEST_SCROLL_TIMES: number = undefined;
@@ -1724,6 +1725,8 @@ export default class ChatBubbles {
 
       // this.ladderDeferred.resolve();
 
+      this.scrollable.lastScrollDirection = 0;
+      this.scrollable.lastScrollTop = 0;
       replaceContent(this.scrollable.container, this.chatInner);
 
       animationIntersector.unlockGroup(CHAT_ANIMATION_GROUP);
@@ -1775,6 +1778,12 @@ export default class ChatBubbles {
 
       this.onScroll();
 
+      const middleware = this.getMiddleware();
+      const afterSetPromise = Promise.all([setPeerPromise, getHeavyAnimationPromise()]);
+      afterSetPromise.then(() => { // check whether list isn't full
+        this.scrollable.checkForTriggers();
+      });
+
       this.chat.dispatchEvent('setPeer', lastMsgId, !isJump);
 
       const needFetchInterval = this.appMessagesManager.isFetchIntervalNeeded(peerId);
@@ -1785,8 +1794,7 @@ export default class ChatBubbles {
           this.setLoaded('bottom', true);
         }
       } else {
-        const middleware = this.getMiddleware();
-        Promise.all([setPeerPromise, getHeavyAnimationPromise()]).then(() => {
+        afterSetPromise.then(() => {
           if(!middleware()) {
             return;
           }
@@ -2108,7 +2116,13 @@ export default class ChatBubbles {
       const s = document.createElement('div');
       s.classList.add('service-msg');
       if(action) {
-        s.append(this.appMessagesManager.wrapMessageActionTextNew(message));
+        if(action._ === 'messageActionChannelMigrateFrom') {
+          s.append(i18n('ChatMigration.From', [new PeerTitle({peerId: -action.chat_id}).element]));
+        } else if(action._ === 'messageActionChatMigrateTo') {
+          s.append(i18n('ChatMigration.To', [new PeerTitle({peerId: -action.channel_id}).element]));
+        } else {
+          s.append(this.appMessagesManager.wrapMessageActionTextNew(message));
+        }
       }
       bubbleContainer.append(s);
 

src/components/chat/chat.ts

@@ -55,7 +55,7 @@ export default class Chat extends EventListenerBase<{
   public contextMenu: ChatContextMenu;
 
   public wasAlreadyUsed = false;
-  public initPeerId = 0;
+  // public initPeerId = 0;
   public peerId = 0;
   public threadId: number;
   public setPeerPromise: Promise<void>;
@@ -66,6 +66,8 @@ export default class Chat extends EventListenerBase<{
   public type: ChatType = 'chat';
 
   public noAutoDownloadMedia: boolean;
+
+  public inited = false;
   
   constructor(public appImManager: AppImManager, 
     public appChatsManager: AppChatsManager, 
@@ -166,8 +168,8 @@ export default class Chat extends EventListenerBase<{
     }
   }
 
-  public init(peerId: number) {
-    this.initPeerId = peerId;
+  public init(/* peerId: number */) {
+    // this.initPeerId = peerId;
 
     this.topbar = new ChatTopbar(this, appSidebarRight, this.appMessagesManager, this.appPeersManager, this.appChatsManager, this.appNotificationsManager);
     this.bubbles = new ChatBubbles(this, this.appMessagesManager, this.appStickersManager, this.appUsersManager, this.appInlineBotsManager, this.appPhotosManager, this.appPeersManager, this.appProfileManager);
@@ -246,9 +248,15 @@ export default class Chat extends EventListenerBase<{
   }
 
   public setPeer(peerId: number, lastMsgId?: number) {
-    if(this.init) {
-      this.init(peerId);
-      this.init = null;
+    if(!peerId) {
+      this.inited = false;
+    } else if(!this.inited) {
+      if(this.init) {
+        this.init(/* peerId */);
+        this.init = null;
+      }
+
+      this.inited = true;
     }
 
     const samePeer = this.peerId === peerId;

src/components/sidebarRight/tabs/sharedMedia.ts

@@ -1168,7 +1168,7 @@ export default class AppSharedMediaTab extends SliderSuperTab {
       }
     } else {
       const chat: Chat = appChatsManager.getChat(-this.peerId);
-      if(chat._ === 'chat' || (chat as Chat.channel).admin_rights) {
+      if((chat._ === 'chat' || (chat as Chat.channel).admin_rights) && !(chat as Chat.chat).pFlags.deactivated) {
         this.editBtn.style.display = '';
       }
     }

src/config/app.ts

@@ -17,7 +17,7 @@ const App = {
   id: 1025907,
   hash: '452b0359b988148995f22ff0f4229750',
   version: '0.6.0',
-  langPackVersion: '0.3.0',
+  langPackVersion: '0.3.1',
   langPack: 'macos',
   langPackCode: 'en',
   domains: [MAIN_DOMAIN] as string[],

src/lang.ts

@@ -46,6 +46,8 @@ const lang = {
   //"ChatList.Menu.Archived": "Archived",
   "ChatList.Menu.SwitchTo.Webogram": "Switch to Old Version",
   "ChatList.Menu.SwitchTo.Z": "Switch to Z version",
+  "ChatMigration.From": "Migrated from %s",
+  "ChatMigration.To": "Migrated to %s",
   "ConnectionStatus.ForceReconnect": "force reconnect",
   "ConnectionStatus.ReconnectIn": "Reconnect in %ds, %s",
   "ConnectionStatus.Reconnect": "reconnect",

src/lib/appManagers/appChatsManager.ts

@@ -217,6 +217,10 @@ export class AppChatsManager {
       return false;
     }
 
+    if((chat as Chat.chat).pFlags.deactivated && action !== 'view_messages') {
+      return false;
+    }
+
     if(chat.pFlags.creator && rights === undefined) {
       return true;
     }

src/lib/appManagers/appImManager.ts

@@ -1025,7 +1025,7 @@ export class AppImManager {
     }
 
     const chat = this.chat;
-    if(!chat.init) { // * use first not inited chat
+    if(chat.inited) { // * use first not inited chat
       this.createNewChat();
     }