Chats: make chatsExpiration a conditional feature

app/soapbox/features/chats/components/chat-page/components/chat-page-main.tsx

@@ -7,7 +7,7 @@ import List, { ListItem } from 'soapbox/components/list';
 import { Avatar, HStack, Icon, IconButton, Menu, MenuButton, MenuItem, MenuList, Stack, Text } from 'soapbox/components/ui';
 import VerificationBadge from 'soapbox/components/verification_badge';
 import { useChatContext } from 'soapbox/contexts/chat-context';
-import { useAppDispatch, useAppSelector } from 'soapbox/hooks';
+import { useAppDispatch, useAppSelector, useFeatures } from 'soapbox/hooks';
 import { MessageExpirationValues, useChatActions } from 'soapbox/queries/chats';
 import { secondsToDays } from 'soapbox/utils/numbers';
 
@@ -41,6 +41,7 @@ const messages = defineMessages({
 const ChatPageMain = () => {
   const dispatch = useAppDispatch();
   const intl = useIntl();
+  const features = useFeatures();
 
   const inputRef = useRef<HTMLTextAreaElement | null>(null);
 
@@ -138,6 +139,7 @@ const ChatPageMain = () => {
                 </Stack>
               </HStack>
 
+              {features.chatsExpiration && (
                 <List>
                   <ListItem
                     label={intl.formatMessage(messages.autoDeleteLabel)}
@@ -164,6 +166,7 @@ const ChatPageMain = () => {
                     isSelected={chat.message_expiration === MessageExpirationValues.NINETY}
                   />
                 </List>
+              )}
 
               <Stack space={2}>
                 <MenuItem

app/soapbox/features/chats/components/chat-widget/chat-settings.tsx

@@ -6,7 +6,7 @@ import { openModal } from 'soapbox/actions/modals';
 import List, { ListItem } from 'soapbox/components/list';
 import { Avatar, HStack, Icon, Select, Stack, Text } from 'soapbox/components/ui';
 import { useChatContext } from 'soapbox/contexts/chat-context';
-import { useAppDispatch, useAppSelector } from 'soapbox/hooks';
+import { useAppDispatch, useAppSelector, useFeatures } from 'soapbox/hooks';
 import { messageExpirationOptions, MessageExpirationValues, useChatActions } from 'soapbox/queries/chats';
 import { secondsToDays } from 'soapbox/utils/numbers';
 
@@ -33,6 +33,7 @@ const messages = defineMessages({
 const ChatSettings = () => {
   const dispatch = useAppDispatch();
   const intl = useIntl();
+  const features = useFeatures();
 
   const { chat, setEditing, toggleChatPane } = useChatContext();
   const { deleteChat, updateChat } = useChatActions(chat?.id as string);
@@ -113,6 +114,7 @@ const ChatSettings = () => {
           </Stack>
         </HStack>
 
+        {features.chatsExpiration && (
           <List>
             <ListItem label={intl.formatMessage(messages.autoDeleteLabel)}>
               <Select defaultValue={chat.message_expiration} onChange={(event) => handleUpdateChat(Number(event.target.value))}>
@@ -128,6 +130,7 @@ const ChatSettings = () => {
               </Select>
             </ListItem>
           </List>
+        )}
 
         <Stack space={5}>
           <button onClick={isBlocking ? handleUnblockUser : handleBlockUser} className='w-full flex items-center space-x-2 font-bold text-sm text-primary-600 dark:text-accent-blue'>

app/soapbox/utils/features.ts

@@ -204,6 +204,12 @@ const getInstanceFeatures = (instance: Instance) => {
      */
     chats: v.software === TRUTHSOCIAL || (v.software === PLEROMA && gte(v.version, '2.1.0')),
 
+    /**
+     * Ability to set disappearing messages on chats.
+     * @see PATCH /api/v1/pleroma/chats/:id
+     */
+    chatsExpiration: v.software === TRUTHSOCIAL,
+
     /**
      * Ability to search among chats.
      * @see GET /api/v1/pleroma/chats