fix(group): treat empty peer names like empty friend names, by showing pk

Fix #5660

src/friendlist.cpp

@@ -81,12 +81,14 @@ QList<Friend*> FriendList::getAllFriends()
     return friendList.values();
 }
 
-QString FriendList::decideNickname(const ToxPk& friendPk, const QString origName)
+QString FriendList::decideNickname(const ToxPk& friendPk, const QString& origName)
 {
     Friend* f = FriendList::findFriend(friendPk);
-    if (f != nullptr && f->hasAlias()) {
+    if (f != nullptr) {
         return f->getDisplayedName();
-    } else {
+    } else if (!origName.isEmpty()) {
         return origName;
+    } else {
+        return friendPk.toString();
     }
 }

src/friendlist.h

@@ -40,7 +40,7 @@ public:
     static QList<Friend*> getAllFriends();
     static void removeFriend(const ToxPk& friendPk, bool fake = false);
     static void clear();
-    static QString decideNickname(const ToxPk& friendPk, const QString origName);
+    static QString decideNickname(const ToxPk& friendPk, const QString& origName);
 
 private:
     static QHash<ToxPk, Friend*> friendList;

src/model/friend.cpp

@@ -19,9 +19,7 @@
 
 
 #include "friend.h"
-#include "src/model/group.h"
 #include "src/model/status.h"
-#include "src/grouplist.h"
 #include "src/persistence/profile.h"
 #include "src/widget/form/chatform.h"
 
@@ -66,6 +64,7 @@ void Friend::setName(const QString& _name)
         emit displayedNameChanged(newDisplayed);
     }
 }
+
 /**
  * @brief Friend::setAlias sets the alias for the friend
  * @param alias new alias, removes it if set to an empty string
@@ -85,12 +84,6 @@ void Friend::setAlias(const QString& alias)
     if (oldDisplayed != newDisplayed) {
         emit displayedNameChanged(newDisplayed);
     }
-
-    for (Group* g : GroupList::getAllGroups()) {
-        if (g->getPeerList().contains(friendPk)) {
-            g->updateUsername(friendPk, newDisplayed);
-        }
-    }
 }
 
 void Friend::setStatusMessage(const QString& message)
@@ -126,6 +119,11 @@ bool Friend::hasAlias() const
     return !userAlias.isEmpty();
 }
 
+QString Friend::getUserName() const
+{
+    return userName;
+}
+
 const ToxPk& Friend::getPublicKey() const
 {
     return friendPk;

src/model/friend.h

@@ -40,7 +40,7 @@ public:
     void setAlias(const QString& name);
     QString getDisplayedName() const override;
     bool hasAlias() const;
-
+    QString getUserName() const;
     void setStatusMessage(const QString& message);
     QString getStatusMessage() const;
 

src/model/group.cpp

@@ -97,11 +97,7 @@ void Group::regeneratePeerList()
         }
 
         empty_nick[pk] = peers[i].isEmpty();
-        if (empty_nick[pk]) {
-            toxpks[pk] = tr("<Empty>", "Placeholder when someone's name in a group chat is empty");
-        } else {
-            toxpks[pk] = peers[i];
-        }
+        toxpks[pk] = FriendList::decideNickname(pk, peers[i]);
     }
     if (avGroupchat) {
         stopAudioOfDepartedPeers(oldPeers, toxpks);

src/widget/widget.cpp

@@ -1100,8 +1100,14 @@ void Widget::onFriendStatusMessageChanged(int friendId, const QString& message)
 void Widget::onFriendDisplayedNameChanged(const QString& displayed)
 {
     Friend* f = qobject_cast<Friend*>(sender());
-    FriendWidget* friendWidget = friendWidgets[f->getPublicKey()];
+    const auto& friendPk = f->getPublicKey();
+    for (Group* g : GroupList::getAllGroups()) {
+        if (g->getPeerList().contains(friendPk)) {
+            g->updateUsername(friendPk, displayed);
+        }
+    }
 
+    FriendWidget* friendWidget = friendWidgets[f->getPublicKey()];
     if (friendWidget->isActive()) {
         GUI::setWindowTitle(displayed);
     }
@@ -1533,6 +1539,12 @@ void Widget::removeFriend(Friend* f, bool fake)
     FriendList::removeFriend(friendPk, fake);
     if (!fake) {
         core->removeFriend(f->getId());
+        // aliases aren't supported for non-friend peers in groups, revert to basic username
+        for (Group* g : GroupList::getAllGroups()) {
+            if (g->getPeerList().contains(friendPk)) {
+                g->updateUsername(friendPk, f->getUserName());
+            }
+        }
     }
 
     friendWidgets.remove(friendPk);
@@ -1778,11 +1790,7 @@ void Widget::onGroupPeerNameChanged(uint32_t groupnumber, const ToxPk& peerPk, c
     Group* g = GroupList::findGroup(groupId);
     assert(g);
 
-    QString setName = newName;
-    if (newName.isEmpty()) {
-        setName = tr("<Empty>", "Placeholder when someone's name in a group chat is empty");
-    }
-
+    const QString setName = FriendList::decideNickname(peerPk, newName);
     g->updateUsername(peerPk, newName);
 }