chatgui: channel sorting by name or last message time with preview

- Add last_msg_at column to channels table
- Update last_msg_at on every message insert (send/receive)
- Parameterize getChannels() with ChannelSortMode enum (Alphabetical/Recent)
- Add getChannelLastMessage() for preview text in channel list
- Add sorting combo to Profile settings page (stored in ui_state)
- Reload channels on message receive when sort is recent

111.txt

@@ -0,0 +1,16 @@
+было:
+Node: 0x32a3a1ee5625ceb9   (chatgui)
+  online: no
+  x25519: 33 2A 8D A2..FC 87 00 3F
+  ed25519: B4 94 9F 4A..5D 9D A9 FB
+  last_seen: 2026-07-26 07:19:18
+  created: 2026-07-23 13:14:13
+  addresses:
+    192.168.40.200:1333  UDP  NETIF  rtt=6ms
+
+стало:
+ID:0x32a3a1ee5625ceb9
+[chatgui] * <- зеленая или красная точка если онлайн
+[иконка last seen] 1h (5s с интервалом 5 сек, 1m 1h 1d)
+[icon created] 20d (дней назад)
+UDP:192.168.40.200:1333

src/routing_layer/topo_node_sqlite.c

@@ -70,6 +70,7 @@ int topo_node_sqlite_init(sqlite3* db) {
         "  signature        BLOB NOT NULL,"     // подпись при создании канал приватным ключом канала channel_id(NUL-terminated) || name(NUL-terminated) || owner_node_id(8 байт, LE uint64) || x25519_pubkey(32 байта) || ed25519_pubkey(32 байта) 
         "  last_read_msg_id INTEGER,"           // для скроллинга чата
         "  last_pos_msg_id  INTEGER,"           // для скроллинга чата
+        "  last_msg_at      INTEGER DEFAULT 0,"  // время последнего сообщения (unix timestamp)
         "  created_at       INTEGER DEFAULT (unixepoch())" // когда создан
         ");";
 

tools/chatgui/db/db_manager.cpp

@@ -105,13 +105,17 @@ QByteArray DbManager::colBlob(sqlite3_stmt* stmt, int col) {
 
 /* ── channels ── */
 
-QList<ChannelRow> DbManager::getChannels() const {
+QList<ChannelRow> DbManager::getChannels(ChannelSortMode sort) const {
     QList<ChannelRow> list;
-    sqlite3_stmt* stmt = prepareOrNull(
+    const char* orderBy = (sort == ChannelSortMode::Recent)
+        ? " ORDER BY last_msg_at DESC, name COLLATE NOCASE ASC"
+        : " ORDER BY name COLLATE NOCASE ASC";
+    char sql[512]; snprintf(sql, sizeof(sql),
         "SELECT channel_id, name, owner_node_id,"
         " x25519_pubkey, x25519_privkey, ed25519_pubkey, ed25519_privkey, signature,"
-        " last_read_msg_id, last_pos_msg_id, created_at"
-        " FROM channels ORDER BY created_at ASC");
+        " last_read_msg_id, last_pos_msg_id, last_msg_at, created_at"
+        " FROM channels%s", orderBy);
+    sqlite3_stmt* stmt = prepareOrNull(sql);
     if (!stmt) return list;
     while (sqlite3_step(stmt) == SQLITE_ROW) {
         ChannelRow r;
@@ -125,7 +129,8 @@ QList<ChannelRow> DbManager::getChannels() const {
         r.signature       = colBlob(stmt, 7);
         r.lastReadMsgId   = sqlite3_column_int64(stmt, 8);
         r.lastPosMsgId    = sqlite3_column_int64(stmt, 9);
-        r.createdAt       = sqlite3_column_int64(stmt, 10);
+        r.lastMsgAt       = sqlite3_column_int64(stmt, 10);
+        r.createdAt       = sqlite3_column_int64(stmt, 11);
         list.append(r);
     }
     sqlite3_finalize(stmt);
@@ -139,6 +144,27 @@ QList<ChannelRow> DbManager::getChannels() const {
     return list;
 }
 
+QString DbManager::getChannelLastMessage(const QString& channelId) const {
+    QString sql = QStringLiteral(
+        "SELECT node_id, data FROM \"%1\" ORDER BY id DESC LIMIT 1")
+        .arg(msgTableName(channelId));
+    sqlite3_stmt* stmt = prepareOrNull(sql.toUtf8().constData());
+    if (!stmt) return {};
+    QString result;
+    if (sqlite3_step(stmt) == SQLITE_ROW) {
+        quint64 author = (quint64)sqlite3_column_int64(stmt, 0);
+        QByteArray jdata = colBlob(stmt, 1);
+        QString text = QString::fromUtf8(parseJsonField(jdata, "d"));
+        if (text.isEmpty()) text = QString::fromUtf8(parseJsonField(jdata, "ct"));
+        QString nick = getDisplayName(author);
+        QString shortText = text.left(60);
+        if (text.size() > 60) shortText += QStringLiteral("...");
+        result = nick + QStringLiteral(": ") + shortText;
+    }
+    sqlite3_finalize(stmt);
+    return result;
+}
+
 /* ── messages (UI) ── */
 
 QList<MessageRow> DbManager::getMessages(const QString& chId, int limit) const {

tools/chatgui/db/db_manager.h

@@ -8,6 +8,8 @@
 #include <QObject>
 #include <cstdint>
 
+enum class ChannelSortMode { Alphabetical, Recent };
+
 struct ChannelRow {
     QString    channelId;
     QString    name;
@@ -20,6 +22,7 @@ struct ChannelRow {
 
     qint64     lastReadMsgId = 0;
     qint64     lastPosMsgId = 0;
+    qint64     lastMsgAt = 0;
     qint64     createdAt = 0;
     int        unreadCount = 0;
 };
@@ -82,7 +85,8 @@ public:
     void    setMyNodeId(quint64 nodeId) { m_myNodeId = nodeId; }
 
     /* ── Каналы ── */
-    QList<ChannelRow> getChannels() const;
+    QList<ChannelRow> getChannels(ChannelSortMode sort = ChannelSortMode::Alphabetical) const;
+    QString getChannelLastMessage(const QString& channelId) const;
     int  getUnreadCount(const QString& channelId, qint64 lastReadMsgId) const;
 
     /* ── UI state for channel read/scroll ── */

tools/chatgui/src/channeldelegate.h

@@ -10,7 +10,8 @@ enum ChannelDataRole {
     ChannelPeersOnlineRole      = Qt::UserRole + 3,  /* int: count of online peers */
     ChannelAutoConnectActiveRole = Qt::UserRole + 4, /* bool: 1 if auto-connect in progress */
     ChannelInviteBtnHoveredRole  = Qt::UserRole + 5, /* bool: 1 when mouse hovers invite button */
-    ChannelUnreadCountRole      = Qt::UserRole + 6  /* int: unread message count, 0 if none */
+    ChannelUnreadCountRole      = Qt::UserRole + 6, /* int: unread message count, 0 if none */
+    ChannelLastMsgAtRole        = Qt::UserRole + 7  /* qint64: last message timestamp for sorting */
 };
 
 class ChannelDelegate : public QStyledItemDelegate {

tools/chatgui/src/channellist.cpp

@@ -166,7 +166,8 @@ void ChannelList::loadChannels() {
     sel->blockSignals(true);
     m_model->clear();
     if (m_db && m_db->isOpen()) {
-        auto channels = m_db->getChannels();
+        int sortMode = m_db->getUiStateInt("channel_sort", 0);
+        auto channels = m_db->getChannels(sortMode == 1 ? ChannelSortMode::Recent : ChannelSortMode::Alphabetical);
         static const QColor colors[] = {
             QColor(74,144,226), QColor(126,211,33), QColor(245,166,35),
             QColor(208,2,27),   QColor(144,19,254), QColor(0,184,148)
@@ -179,12 +180,14 @@ void ChannelList::loadChannels() {
             auto *item = new QStandardItem();
             item->setData(ch.name,        ChannelNameRole);
             item->setData(ch.channelId,   ChannelChannelIdRole);
-            item->setData(QString(),      ChannelLastMessageRole);
+            item->setData(m_db->getChannelLastMessage(ch.channelId), ChannelLastMessageRole);
             item->setData(ch.unreadCount, ChannelUnreadCountRole);
+            item->setData(ch.lastMsgAt,   ChannelLastMsgAtRole);
             item->setData(makeChannelIcon(colors[ci % 6], letter), ChannelIconRole);
             m_model->appendRow(item);
-            DEBUG_INFO(DEBUG_CATEGORY_DEBUG, "ChannelList::loadChannels row=%d cid='%s' name='%s' unread=%d",
-                       m_model->rowCount()-1, qPrintable(ch.channelId), qPrintable(ch.name), ch.unreadCount);
+            DEBUG_INFO(DEBUG_CATEGORY_DEBUG, "ChannelList::loadChannels row=%d cid='%s' name='%s' unread=%d lastMsgAt=%lld sort=%d",
+                       m_model->rowCount()-1, qPrintable(ch.channelId), qPrintable(ch.name), ch.unreadCount,
+                       (long long)ch.lastMsgAt, sortMode);
             ci++;
         }
     }

tools/chatgui/src/mainwindow.cpp

@@ -340,6 +340,7 @@ void MainWindow::showJoinDialog() {
 void MainWindow::showSettings() {
     SettingsDialog dlg(m_cfgPath, m_db, m_node, this);
     dlg.exec();
+    reloadChannels();
 }
 
 void MainWindow::onMessageReceived(const char* ch_id, int ch_id_len, uint64_t author) {
@@ -358,6 +359,8 @@ void MainWindow::onMessageReceived(const char* ch_id, int ch_id_len, uint64_t au
             m_channelList->setChannelUnreadCount(cid, unread);
         }
     }
+    if (m_db && m_db->getUiStateInt("channel_sort", 0) == 1)
+        reloadChannels();
 }
 
 void MainWindow::onMembersChanged(const char* ch_id) {

tools/chatgui/src/settingsdialog.cpp

@@ -18,6 +18,7 @@ extern "C" {
 #include <QLabel>
 #include <QFormLayout>
 #include <QLineEdit>
+#include <QComboBox>
 #include <QFile>
 #include <QTextStream>
 
@@ -69,6 +70,15 @@ SettingsDialog::SettingsDialog(const QString& configPath, DbManager* db, UtunNod
         "QLineEdit { border: 1px solid palette(mid); border-radius: 4px;"
         " padding: 6px 10px; font-size: 13px; background: palette(base); }");
     profLayout->addRow(nameLabel, m_nicknameEdit);
+
+    auto* sortLabel = new QLabel("Channel sorting:", profilePage);
+    m_sortCombo = new QComboBox(profilePage);
+    m_sortCombo->addItem("Alphabetical (A-Z)");
+    m_sortCombo->addItem("Recent Activity");
+    m_sortCombo->setStyleSheet(
+        "QComboBox { border: 1px solid palette(mid); border-radius: 4px;"
+        " padding: 6px 10px; font-size: 13px; background: palette(base); }");
+    profLayout->addRow(sortLabel, m_sortCombo);
     m_pages->addWidget(profilePage);
 
     // Network page
@@ -124,6 +134,10 @@ SettingsDialog::SettingsDialog(const QString& configPath, DbManager* db, UtunNod
 
     // Load current values
     loadProfileFromConfig(m_configPath);
+    if (db) {
+        int sortMode = db->getUiStateInt("channel_sort", 0);
+        m_sortCombo->setCurrentIndex(sortMode == 1 ? 1 : 0);
+    }
     m_networkPage->loadFromConfig(m_configPath);
     m_soundPage->loadFromDb();
     m_categoryList->setCurrentRow(0);
@@ -189,6 +203,21 @@ void SettingsDialog::onSave() {
     f.close();
 
     m_networkPage->saveToConfig(m_configPath);
+
+    /* save channel sort preference to ui_state */
+    {
+        const char* key = "channel_sort";
+        QByteArray val = QByteArray::number(m_sortCombo->currentIndex());
+        size_t klen = strlen(key), vlen = (size_t)val.size();
+        size_t total = klen + 1 + vlen + 1;
+        if (total <= 256) {
+            void* arg = u_malloc(total);
+            memcpy(arg, key, klen + 1);
+            memcpy((char*)arg + klen + 1, val.constData(), vlen + 1);
+            gui_bridge_post_uasync_fn(chat_core_save_ui_state_trampoline, arg);
+        }
+    }
+
     m_soundPage->applyAndSave();
     accept();
 }

tools/chatgui/src/settingsdialog.h

@@ -6,6 +6,7 @@
 #include <QStackedWidget>
 #include <QPushButton>
 #include <QLineEdit>
+#include <QComboBox>
 #include <QString>
 
 class NetworkSettingsPage;
@@ -33,6 +34,7 @@ private:
     QStackedWidget*       m_pages;
     QPushButton*          m_saveBtn;
     QLineEdit*            m_nicknameEdit;
+    QComboBox*            m_sortCombo;
     QString               m_oldNickname;
     NetworkSettingsPage*  m_networkPage;
     DatabaseSettingsPage* m_databasePage;

tools/chatgui/transport/chat_msg.c

@@ -214,9 +214,17 @@ int chat_core_load_nodeinfo(uint64_t node_id, uint8_t* buf, size_t buf_size,
 /* ─── db_sync callback ─── */
 
 void on_msg_inserted(struct DB_SYNC_INSTANCE* si, uint64_t record_ts, const char* data, size_t len, uint64_t author, void* arg) {
-    (void)si; (void)record_ts; (void)data; (void)len; (void)author;
+    (void)si; (void)data; (void)len;
     const char* ch_id = (const char*)arg;
     uint8_t evt[73]; uint8_t cl = (uint8_t)strlen(ch_id); evt[0] = cl; memcpy(evt + 1, ch_id, cl);
     memcpy(evt + 1 + cl, &author, 8);
     gui_bridge_post(GUI_EVT_MSG_RECEIVED, evt, 1 + cl + 8);
+
+    sqlite3_stmt* st = NULL;
+    sqlite3_prepare_v2(g_cc.db, "UPDATE channels SET last_msg_at = ? WHERE channel_id = ?", -1, &st, NULL);
+    if (st) {
+        sqlite3_bind_int64(st, 1, (sqlite3_int64)record_ts);
+        sqlite3_bind_text(st, 2, ch_id, -1, SQLITE_STATIC);
+        sqlite3_step(st); sqlite3_finalize(st);
+    }
 }