Delete chat: Allow to leave; Seen By: Better view (#1749)

src/components/common/DeleteChatModal.tsx

@@ -108,6 +108,15 @@ const DeleteChatModal: FC<OwnProps & StateProps> = ({
     deleteChannel,
   ]);
 
+  const handleLeaveChat = useCallback(() => {
+    if (isChannel || isSuperGroup) {
+      leaveChannel({ chatId: chat.id });
+      onClose();
+    } else {
+      handleDeleteChat();
+    }
+  }, [chat.id, handleDeleteChat, isChannel, isSuperGroup, leaveChannel, onClose]);
+
   function renderHeader() {
     return (
       <div className="modal-header" dir={lang.isRtl ? 'rtl' : undefined}>
@@ -183,7 +192,17 @@ const DeleteChatModal: FC<OwnProps & StateProps> = ({
           {contactName ? renderText(lang('ChatList.DeleteForEveryone', contactName)) : lang('DeleteForAll')}
         </Button>
       )}
-      <Button color="danger" className="confirm-dialog-button" isText onClick={handleDeleteChat}>
+      {!isPrivateChat && chat.isCreator && (
+        <Button color="danger" className="confirm-dialog-button" isText onClick={handleDeleteChat}>
+          {lang('DeleteForAll')}
+        </Button>
+      )}
+      <Button
+        color="danger"
+        className="confirm-dialog-button"
+        isText
+        onClick={isPrivateChat ? handleDeleteChat : handleLeaveChat}
+      >
         {lang(renderActionText())}
       </Button>
       <Button className="confirm-dialog-button" isText onClick={onClose}>{lang('Cancel')}</Button>

src/components/common/SeenByModal.tsx

@@ -46,7 +46,7 @@ const SeenByModal: FC<OwnProps & StateProps> = ({
       isOpen={isOpen}
       onClose={closeSeenByModal}
       className="narrow"
-      title="Which users read the message"
+      title={`Seen by ${memberIds?.length} users`}
     >
       <div dir={lang.isRtl ? 'rtl' : undefined}>
         {renderingMemberIds && renderingMemberIds.map((userId) => (

src/components/middle/message/MessageContextMenu.tsx

@@ -7,6 +7,7 @@ import { IAnchorPosition } from '../../../types';
 
 import { getMessageCopyOptions } from './helpers/copyOptions';
 import { disableScrolling, enableScrolling } from '../../../util/scrollLock';
+import { getUserFullName } from '../../../modules/helpers';
 import useContextMenuPosition from '../../../hooks/useContextMenuPosition';
 import useLang from '../../../hooks/useLang';
 import buildClassName from '../../../util/buildClassName';
@@ -259,9 +260,12 @@ const MessageContextMenu: FC<OwnProps> = ({
                 ? lang('Chat.OutgoingContextMixedReactionCount', [message.reactors.count, message.seenByUserIds.length])
                 : lang('Chat.ContextReactionCount', message.reactors.count, 'i')
             ) : (
-              message.seenByUserIds?.length
-                ? lang('Conversation.ContextMenuSeen', message.seenByUserIds.length, 'i')
-                : lang('Conversation.ContextMenuNoViews')
+              message.seenByUserIds?.length === 1 && seenByRecentUsers
+                ? getUserFullName(seenByRecentUsers[0])
+                : (message.seenByUserIds?.length
+                  ? lang('Conversation.ContextMenuSeen', message.seenByUserIds.length, 'i')
+                  : lang('Conversation.ContextMenuNoViews')
+                )
             )}
             <div className="avatars">
               {seenByRecentUsers?.map((user) => (