Fix reaction display in private MUCs

libdino/src/service/muc_manager.vala

@@ -323,6 +323,14 @@ public class MucManager : StreamInteractionModule, Object {
         return null;
     }
 
+    public Jid? get_occupant_jid(Account account, Jid room, Jid occupant_real_jid) {
+        Xep.Muc.Flag? flag = get_muc_flag(account);
+        if (flag != null) {
+            return flag.get_occupant_jid(occupant_real_jid, room);
+        }
+        return null;
+    }
+
     public Xep.Muc.Role? get_role(Jid jid, Account account) {
         Xep.Muc.Flag? flag = get_muc_flag(account);
         if (flag != null) {

libdino/src/service/reactions.vala

@@ -199,6 +199,7 @@ public class Dino.Reactions : StreamInteractionModule, Object {
                 .with(db.reaction.account_id, "=", account.id)
                 .with(db.reaction.content_item_id, "=", content_item.id)
                 .outer_join_with(db.occupantid, db.occupantid.id, db.reaction.occupant_id)
+                .outer_join_with(db.jid, db.jid.id, db.reaction.jid_id)
                 .order_by(db.reaction.time, "DESC");
 
         string? own_occupant_id = stream_interactor.get_module(MucManager.IDENTITY).get_own_occupant_id(account, content_item.jid);
@@ -209,12 +210,18 @@ public class Dino.Reactions : StreamInteractionModule, Object {
             string emoji_str = row[db.reaction.emojis];
 
             Jid jid = null;
+            if (!db.jid.bare_jid.is_null(row)) {
+                jid = new Jid(row[db.jid.bare_jid]);
+            } else if (!db.occupantid.occupant_id.is_null(row)) {
                 if (row[db.occupantid.occupant_id] == own_occupant_id) {
                     jid = account.bare_jid;
                 } else {
                     string nick = row[db.occupantid.last_nick];
                     jid = content_item.jid.with_resource(nick);
                 }
+            } else {
+                warning("Reaction with neither JID nor occupant id");
+            }
 
             foreach (string emoji in emoji_str.split(",")) {
                 if (!index.has_key(emoji)) {

libdino/src/util/display_name.vala

@@ -30,7 +30,7 @@ namespace Dino {
         if (conversation.type_ == Conversation.Type.CHAT) {
             return get_real_display_name(stream_interactor, conversation.account, participant, self_word) ?? participant.bare_jid.to_string();
         }
-        if ((conversation.type_ == Conversation.Type.GROUPCHAT || conversation.type_ == Conversation.Type.GROUPCHAT_PM) && conversation.counterpart.equals_bare(participant)) {
+        if ((conversation.type_ == Conversation.Type.GROUPCHAT || conversation.type_ == Conversation.Type.GROUPCHAT_PM)) {
             return get_occupant_display_name(stream_interactor, conversation, participant);
         }
         return participant.bare_jid.to_string();
@@ -75,8 +75,13 @@ namespace Dino {
     public static string get_occupant_display_name(StreamInteractor stream_interactor, Conversation conversation, Jid jid, string? self_word = null, bool muc_real_name = false) {
         if (muc_real_name) {
             MucManager muc_manager = stream_interactor.get_module(MucManager.IDENTITY);
-            if (muc_manager.is_private_room(conversation.account, jid.bare_jid)) {
+            if (muc_manager.is_private_room(conversation.account, conversation.counterpart)) {
-                Jid? real_jid = muc_manager.get_real_jid(jid, conversation.account);
+                Jid? real_jid = null;
+                if (jid.equals_bare(conversation.counterpart)) {
+                    muc_manager.get_real_jid(jid, conversation.account);
+                } else {
+                    real_jid = jid;
+                }
                 if (real_jid != null) {
                     string? display_name = get_real_display_name(stream_interactor, conversation.account, real_jid, self_word);
                     if (display_name != null) return display_name;
@@ -92,6 +97,15 @@ namespace Dino {
             }
         }
 
+        // If it's someone else's real jid, recover nickname
+        if (!jid.equals_bare(conversation.counterpart)) {
+            MucManager muc_manager = stream_interactor.get_module(MucManager.IDENTITY);
+            Jid? occupant_jid = muc_manager.get_occupant_jid(conversation.account, conversation.counterpart.bare_jid, jid);
+            if (occupant_jid != null && occupant_jid.resourcepart != null) {
+                return occupant_jid.resourcepart;
+            }
+        }
+
         return jid.resourcepart ?? jid.to_string();
     }
 }

xmpp-vala/src/module/xep/0045_muc/flag.vala

@@ -26,6 +26,15 @@ public class Flag : XmppStreamFlag {
 
     public Jid? get_real_jid(Jid full_jid) { return occupant_real_jids[full_jid]; }
 
+    public Jid? get_occupant_jid(Jid real_jid, Jid room) {
+        foreach (Map.Entry<Jid, Jid> entry in occupant_real_jids) {
+            if (entry.value.equals_bare(real_jid) && entry.key.equals_bare(room)) {
+                return entry.key;
+            }
+        }
+        return null;
+    }
+
     public Gee.List<Jid> get_offline_members(Jid muc_jid) {
         Gee.List<Jid> ret = new ArrayList<Jid>(Jid.equals_func);
         HashMap<Jid, Affiliation>? muc_affiliations = affiliations[muc_jid.bare_jid];