Handled case of all members deactivated

app/screens/convert_gm_to_channel/convert_gm_to_channel.tsx

@@ -6,19 +6,18 @@ import React, {useEffect, useRef, useState} from 'react';
 import {fetchChannelMemberships, getGroupMessageMembersCommonTeams} from '@actions/remote/channel';
 import {PER_PAGE_DEFAULT} from '@app/client/rest/constants';
 import {useServerUrl} from '@app/context/server';
-import {logDebug} from '@app/utils/log';
 
 import {ConvertGMToChannelForm} from './convert_gm_to_channel_form';
 import {Loader} from './loader';
-import UserProfile from '../user_profile/user_profile';
 
 type Props = {
     channelId: string;
+    currentUserId?: string;
 }
 
 const loadingIndicatorTimeout = 1200;
 
-const ConvertGMToChannel = ({channelId}: Props) => {
+const ConvertGMToChannel = ({channelId, currentUserId}: Props) => {
     const [loadingAnimationTimeout, setLoadingAnimationTimeout] = useState(false);
     const [commonTeamsFetched, setCommonTeamsFetched] = useState(false);
     const [channelMembersFetched, setChannelMembersFetched] = useState(false);
@@ -42,8 +41,11 @@ const ConvertGMToChannel = ({channelId}: Props) => {
         }
 
         work();
+    }, []);
 
+    useEffect(() => {
         mounted.current = true;
+
         const options: GetUsersOptions = {sort: 'admin', active: true, per_page: PER_PAGE_DEFAULT};
         fetchChannelMemberships(serverUrl, channelId, options, true).then(({users, members}) => {
             if (!mounted.current) {
@@ -51,14 +53,25 @@ const ConvertGMToChannel = ({channelId}: Props) => {
             }
 
             if (users.length) {
+                // Gotta make sure we use profiles that are in members.
+                // See comment in fetchChannelMemberships for more details.
+
                 const usersById: {[id: string]: UserProfile} = {};
                 // eslint-disable-next-line max-nested-callbacks
                 users.forEach((profile) => {
-                    usersById[profile.id] = profile;
+                    if (profile.id !== currentUserId) {
+                        usersById[profile.id] = profile;
+                    }
                 });
 
                 // eslint-disable-next-line max-nested-callbacks
-                const filteredUsers = members.map((member) => usersById[member.user_id]);
+                const filteredUsers: UserProfile[] = [];
+                // eslint-disable-next-line max-nested-callbacks
+                members.forEach((member) => {
+                    if (usersById[member.user_id]) {
+                        filteredUsers.push(usersById[member.user_id]);
+                    }
+                });
                 setProfiles(filteredUsers);
             }
 

app/screens/convert_gm_to_channel/index.tsx

@@ -1,6 +1,21 @@
 // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
 // See LICENSE.txt for license information.
 
+import {withDatabase} from '@nozbe/watermelondb/DatabaseProvider';
+import withObservables from '@nozbe/with-observables';
+
+import {observeCurrentUserId} from '@app/queries/servers/system';
+
 import ConvertGMToChannel from './convert_gm_to_channel';
 
-export default ConvertGMToChannel;
+import type {WithDatabaseArgs} from '@typings/database/database';
+
+const enhance = withObservables([], ({database}: WithDatabaseArgs) => {
+    const currentUserId = observeCurrentUserId(database);
+
+    return {
+        currentUserId,
+    };
+});
+
+export default withDatabase(enhance(ConvertGMToChannel));

assets/base/i18n/en.json

@@ -1090,6 +1090,7 @@
   "channel_info.convert_gm_to_channel": "Convert to a Private Channel",
   "channel_info.convert_gm_to_channel.warning.header": "Conversation history will be visible to any channel members",
   "channel_info.convert_gm_to_channel.warning.body": "You are about to convert the Group Message with {memberNames} to a Channel. This cannot be undone.",
+  "channel_info.convert_gm_to_channel.warning.body.yourself": "yourself",
   "channel_into.convert_gm_to_channel.team_selector.label": "Team",
   "channel_into.convert_gm_to_channel.team_selector.placeholder": "Select a Team",
   "channel_info.convert_gm_to_channel.button_text": "Convert to Private Channel",