create folders in guild list

src/components/channellist/classic/guildlist.cpp

@@ -12,15 +12,37 @@ void GuildList::UpdateListing() {
     Clear();
 
     // does this function still even work ??lol
-    const auto ids = discord.GetUserSortedGuilds();
-    for (const auto id : ids) {
-        AddGuild(id);
+    const auto folders = discord.GetUserSettings().GuildFolders;
+    const auto guild_ids = discord.GetUserSortedGuilds();
+
+    // same logic from ChannelListTree
+
+    std::set<Snowflake> foldered_guilds;
+    for (const auto &group : folders) {
+        foldered_guilds.insert(group.GuildIDs.begin(), group.GuildIDs.end());
+    }
+
+    for (auto iter = guild_ids.crbegin(); iter != guild_ids.crend(); iter++) {
+        if (foldered_guilds.find(*iter) == foldered_guilds.end()) {
+            AddGuild(*iter);
+        }
+    }
+
+    for (const auto &group : folders) {
+        AddFolder(group);
     }
 }
 
 void GuildList::AddGuild(Snowflake id) {
+    if (auto item = CreateGuildWidget(id)) {
+        item->show();
+        add(*item);
+    }
+}
+
+GuildListGuildItem *GuildList::CreateGuildWidget(Snowflake id) {
     const auto guild = Abaddon::Get().GetDiscordClient().GetGuild(id);
-    if (!guild.has_value()) return;
+    if (!guild.has_value()) return nullptr;
 
     auto *item = Gtk::make_managed<GuildListGuildItem>(*guild);
     item->signal_button_press_event().connect([this, id](GdkEventButton *event) -> bool {
@@ -29,8 +51,29 @@ void GuildList::AddGuild(Snowflake id) {
         }
         return true;
     });
-    item->show();
-    add(*item);
+
+    return item;
+}
+
+void GuildList::AddFolder(const UserSettingsGuildFoldersEntry &folder) {
+    // groups with no ID arent actually folders
+    if (!folder.ID.has_value()) {
+        if (!folder.GuildIDs.empty()) {
+            AddGuild(folder.GuildIDs[0]);
+        }
+        return;
+    }
+
+    auto *folder_widget = Gtk::make_managed<GuildListFolderItem>();
+    for (const auto guild_id : folder.GuildIDs) {
+        if (auto *guild_widget = CreateGuildWidget(guild_id)) {
+            guild_widget->show();
+            folder_widget->AddGuildWidget(guild_widget);
+        }
+    }
+
+    folder_widget->show();
+    add(*folder_widget);
 }
 
 void GuildList::Clear() {