fix: Correct member-added info messages

src/chat.rs

@@ -4065,7 +4065,15 @@ pub(crate) async fn add_contact_to_chat_ex(
         msg.viewtype = Viewtype::Text;
 
         let contact_addr = contact.get_addr().to_lowercase();
-        msg.text = stock_str::msg_add_member_local(context, contact.id, ContactId::SELF).await;
+        let added_by = if from_handshake && chat.is_out_broadcast() {
+            // The contact was added via a QR code rather than explicit user action,
+            // and there is added information in saying 'You added member Alice'
+            // if self is the only one who can add members.
+            ContactId::UNDEFINED
+        } else {
+            ContactId::SELF
+        };
+        msg.text = stock_str::msg_add_member_local(context, contact.id, added_by).await;
         msg.param.set_cmd(SystemMessage::MemberAddedToGroup);
         msg.param.set(Param::Arg, contact_addr);
         msg.param.set_int(Param::Arg2, from_handshake.into());

src/receive_imf.rs

@@ -3504,6 +3504,17 @@ async fn apply_out_broadcast_changes(
             silent: true,
             extra_msgs: vec![],
         });
+    } else if let Some(added_addr) = mime_parser.get_header(HeaderDef::ChatGroupMemberAdded) {
+        // TODO this may lookup the wrong contact if multiple contacts have the same email addr.
+        // We can send sync messages instead,
+        // lookup the fingerprint by gossip header (like it's done for groups right now)
+        // or add a header ChatGroupMemberAddedFpr.
+        let contact = lookup_key_contact_by_address(context, added_addr, None).await?;
+        if let Some(contact) = contact {
+            better_msg.get_or_insert(
+                stock_str::msg_add_member_local(context, contact, ContactId::UNDEFINED).await,
+            );
+        }
     }
 
     if send_event_chat_modified {
@@ -3546,6 +3557,12 @@ async fn apply_in_broadcast_changes(
             better_msg
                 .get_or_insert(stock_str::msg_group_left_local(context, ContactId::SELF).await);
         }
+    } else if let Some(added_addr) = mime_parser.get_header(HeaderDef::ChatGroupMemberAdded) {
+        if context.is_self_addr(added_addr).await? {
+            better_msg.get_or_insert(
+                stock_str::msg_add_member_local(context, ContactId::SELF, from_id).await,
+            );
+        }
     }
 
     if send_event_chat_modified {