Support deleting service chat with Telegram (#1867)

src/config.ts

@@ -197,6 +197,7 @@ export const COUNTRIES_WITH_12H_TIME_FORMAT = new Set(['AU', 'BD', 'CA', 'CO', '
 
 // MTProto constants
 export const SERVICE_NOTIFICATIONS_USER_ID = '777000';
+export const SERVICE_NOTIFICATIONS_NUMBER = '42777';
 export const REPLIES_USER_ID = '1271266957'; // TODO For Test connection ID must be equal to 708513
 export const ALL_FOLDER_ID = 0;
 export const ARCHIVED_FOLDER_ID = 1;

src/global/actions/api/chats.ts

@@ -15,7 +15,7 @@ import {
   CHAT_LIST_LOAD_SLICE,
   RE_TG_LINK,
   SERVICE_NOTIFICATIONS_USER_ID,
-  TMP_CHAT_ID, ALL_FOLDER_ID, DEBUG,
+  TMP_CHAT_ID, ALL_FOLDER_ID, DEBUG, SERVICE_NOTIFICATIONS_NUMBER,
 } from '../../../config';
 import { callApi } from '../../../api/gramjs';
 import {
@@ -1068,14 +1068,14 @@ async function loadChats(
   listType: 'active' | 'archived', offsetId?: string, offsetDate?: number, shouldReplace = false,
 ) {
   let global = getGlobal();
-
+  const lastLocalServiceMessage = selectLastServiceNotification(global)?.message;
   const result = await callApi('fetchChats', {
     limit: CHAT_LIST_LOAD_SLICE,
     offsetDate,
     archived: listType === 'archived',
     withPinned: shouldReplace,
     serverTimeOffset: global.serverTimeOffset,
-    lastLocalServiceMessage: selectLastServiceNotification(global)?.message,
+    lastLocalServiceMessage,
   });
 
   if (!result) {
@@ -1091,6 +1091,18 @@ async function loadChats(
   global = getGlobal();
 
   if (shouldReplace && listType === 'active') {
+    // Always include service notifications chat
+    if (!chatIds.includes(SERVICE_NOTIFICATIONS_USER_ID)) {
+      const chat = await callApi('getChatByPhoneNumber', SERVICE_NOTIFICATIONS_NUMBER);
+      global = getGlobal();
+      if (chat) {
+        chatIds.unshift(chat.id);
+        result.chats.unshift(chat);
+        if (lastLocalServiceMessage) {
+          chat.lastMessage = lastLocalServiceMessage;
+        }
+      }
+    }
     const currentChat = selectCurrentChat(global);
     const visibleChats = currentChat ? [currentChat] : [];
 

src/global/actions/apiUpdaters/messages.ts

@@ -4,8 +4,10 @@ import type {
   ApiChat,
   ApiMessage, ApiPollResult, ApiReactions, ApiThreadInfo,
 } from '../../../api/types';
+import type { ActiveEmojiInteraction, GlobalActions, GlobalState } from '../../types';
 import { MAIN_THREAD_ID } from '../../../api/types';
 
+import { SERVICE_NOTIFICATIONS_USER_ID } from '../../../config';
 import { unique } from '../../../util/iteratees';
 import { areDeepEqual } from '../../../util/areDeepEqual';
 import { notifyAboutMessage } from '../../../util/notifications';
@@ -21,7 +23,6 @@ import {
   deleteChatScheduledMessages,
   updateThreadUnreadFromForwardedMessage,
 } from '../../reducers';
-import type { ActiveEmojiInteraction, GlobalActions, GlobalState } from '../../types';
 import {
   selectChatMessage,
   selectChatMessages,
@@ -346,9 +347,22 @@ addActionHandler('apiUpdate', (global, actions, update) => {
     case 'deleteHistory': {
       const { chatId } = update;
       const chatMessages = global.messages.byChatId[chatId];
+      if (chatId === SERVICE_NOTIFICATIONS_USER_ID) {
+        const lastNotification = global.serviceNotifications.sort((a, b) => b.id - a.id)?.[0];
+        const serviceNotifications = lastNotification ? [{
+          ...lastNotification,
+          isHidden: true,
+        }] : [];
+
+        setGlobal({
+          ...global,
+          serviceNotifications,
+        });
+      }
+
       if (chatMessages) {
         const ids = Object.keys(chatMessages.byId).map(Number);
-        deleteMessages(chatId, ids, actions, global);
+        deleteMessages(chatId, ids, actions, getGlobal());
       } else {
         actions.requestChatUpdate({ chatId });
       }

src/global/selectors/messages.ts

@@ -894,7 +894,7 @@ export function selectLastServiceNotification(global: GlobalState) {
   const { serviceNotifications } = global;
   const maxId = Math.max(...serviceNotifications.map(({ id }) => id));
 
-  return serviceNotifications.find(({ id }) => id === maxId);
+  return serviceNotifications.find(({ id, isHidden }) => !isHidden && id === maxId);
 }
 
 export function selectIsMessageProtected(global: GlobalState, message?: ApiMessage) {

src/global/types.ts

@@ -122,6 +122,7 @@ export interface ServiceNotification {
   message: ApiMessage;
   version?: string;
   isUnread?: boolean;
+  isHidden?: boolean;
 }
 
 export type ApiLimitType = (