Fix remaining review threads on the user alts tab

- Switch to the User Alts tab when it is created, so the first investigate
  click does not open it in the background.
- Treat an empty RespOk as "user not found" and use a generic message for
  error codes, matching what the server actually returns.
- Exclude the depth-0 seed row from the related-account count.
- Guard the reply with the requested user name so a stale response cannot
  overwrite a newer one.
- Move the duplicated formatEpoch body into widgets/utility/epoch_format.h.

cockatrice/CMakeLists.txt

@@ -285,6 +285,7 @@ set(cockatrice_SOURCES
     src/interface/widgets/settings_page/storage_settings_page.cpp
     src/interface/widgets/settings_page/user_interface_settings_page.cpp
     src/interface/widgets/utility/custom_line_edit.cpp
+    src/interface/widgets/utility/epoch_format.h
     src/interface/widgets/utility/get_text_with_max.cpp
     src/interface/widgets/utility/report_utils.cpp
     src/interface/widgets/utility/report_utils.h

cockatrice/src/interface/widgets/tabs/tab_alts.cpp

@@ -1,5 +1,6 @@
 #include "tab_alts.h"
 
+#include "../utility/epoch_format.h"
 #include "abstract_client.h"
 #include "libcockatrice/protocol/pb/response.pb.h"
 #include "libcockatrice/protocol/pb/response_user_alts.pb.h"
@@ -99,10 +100,7 @@ void TabAlts::retranslateUi()
 
 QString TabAlts::formatEpoch(quint64 ts) const
 {
-    if (ts == 0) {
-        return tr("Unknown");
-    }
-    return QDateTime::fromSecsSinceEpoch(ts).toLocalTime().toString("yyyy-MM-dd HH:mm");
+    return formatEpochTimestamp(ts, tr("Unknown"));
 }
 
 void TabAlts::investigate(const QString &userName)
@@ -132,7 +130,11 @@ void TabAlts::requestAlts(const QString &userName, int depth)
     cmd.set_user_name(userName.toStdString());
     cmd.set_depth(static_cast<google::protobuf::uint32>(depth));
     PendingCommand *pend = client->prepareModeratorCommand(cmd);
-    connect(pend, &PendingCommand::finished, this, &TabAlts::altsResponse);
+    connect(pend, &PendingCommand::finished, this, [this, userName](const Response &response) {
+        if (userName == currentUser) {
+            altsResponse(response);
+        }
+    });
     client->sendCommand(pend);
 }
 
@@ -140,14 +142,25 @@ void TabAlts::altsResponse(const Response &response)
 {
     altsTable->setRowCount(0);
     if (response.response_code() != Response::RespOk) {
-        statusLabel->setText(tr("User %1 not found.").arg(currentUser));
+        statusLabel->setText(tr("Could not load alts for %1.").arg(currentUser));
         return;
     }
 
     const Response_UserAlts &resp = response.GetExtension(Response_UserAlts::ext);
+    // The server answers RespOk with no rows when the user does not exist.
+    if (resp.alts_size() == 0) {
+        statusLabel->setText(tr("User %1 not found.").arg(currentUser));
+        return;
+    }
+
     altsTable->setRowCount(resp.alts_size());
+    int relatedCount = 0;
     for (int i = 0; i < resp.alts_size(); ++i) {
         const ServerInfo_UserAlt &alt = resp.alts(i);
+        // The server appends the frontier user as a depth-0 seed row.
+        if (!alt.has_depth() || alt.depth() > 0) {
+            ++relatedCount;
+        }
         altsTable->setItem(i, COL_ALTS_USER, new QTableWidgetItem(QString::fromStdString(alt.user_name())));
         altsTable->setItem(i, COL_ALTS_VIA,
                            new QTableWidgetItem(alt.has_match_reason() && !alt.match_reason().empty()
@@ -166,5 +179,5 @@ void TabAlts::altsResponse(const Response &response)
         altsTable->setItem(i, COL_ALTS_BANS, new QTableWidgetItem(QString::number(alt.ban_count())));
         altsTable->setItem(i, COL_ALTS_ACTIVE, new QTableWidgetItem(alt.is_active() ? tr("yes") : tr("no")));
     }
-    statusLabel->setText(tr("%1 account(s) related to %2.").arg(resp.alts_size()).arg(currentUser));
+    statusLabel->setText(tr("%1 account(s) related to %2.").arg(relatedCount).arg(currentUser));
 }

cockatrice/src/interface/widgets/tabs/tab_moderation.cpp

@@ -1,5 +1,6 @@
 #include "tab_moderation.h"
 
+#include "../utility/epoch_format.h"
 #include "abstract_client.h"
 #include "libcockatrice/protocol/pb/admin_commands.pb.h"
 #include "libcockatrice/protocol/pb/response.pb.h"
@@ -215,10 +216,7 @@ void TabModeration::retranslateUi()
 
 QString TabModeration::formatEpoch(quint64 ts) const
 {
-    if (ts == 0) {
-        return tr("Unknown");
-    }
-    return QDateTime::fromSecsSinceEpoch(ts).toLocalTime().toString("yyyy-MM-dd HH:mm");
+    return formatEpochTimestamp(ts, tr("Unknown"));
 }
 
 void TabModeration::clearUserData()

cockatrice/src/interface/widgets/tabs/tab_supervisor.cpp

@@ -933,6 +933,7 @@ void TabSupervisor::openTabAlts(const QString &userName)
     }
     tabAlts = new TabAlts(this, client, userName);
     myAddTab(tabAlts);
+    setCurrentWidget(tabAlts);
     connect(tabAlts, &QObject::destroyed, this, [this] { tabAlts = nullptr; });
 }
 

cockatrice/src/interface/widgets/utility/epoch_format.h

@@ -0,0 +1,27 @@
+/**
+ * @file epoch_format.h
+ * @brief Shared timestamp formatting for the moderation tables.
+ */
+
+#ifndef EPOCH_FORMAT_H
+#define EPOCH_FORMAT_H
+
+#include <QDateTime>
+#include <QString>
+
+/**
+ * @brief Format a unix timestamp the way the moderation tabs show dates.
+ *
+ * @param ts          Seconds since the epoch; 0 means "unknown".
+ * @param unknownText Label returned for 0, translated by the caller so the
+ *                    translation context stays with the tab.
+ */
+inline QString formatEpochTimestamp(quint64 ts, const QString &unknownText)
+{
+    if (ts == 0) {
+        return unknownText;
+    }
+    return QDateTime::fromSecsSinceEpoch(ts).toLocalTime().toString(QStringLiteral("yyyy-MM-dd HH:mm"));
+}
+
+#endif // EPOCH_FORMAT_H