fix: 优化客户端错误提示和校验诊断信息

Launcher/main.cpp

@@ -176,9 +176,29 @@ int main(int argc, char* argv[])
             QCoreApplication::translate("Launcher", "Select Offline Update Package"),
             QString(),
             QCoreApplication::translate("Launcher", "Marsco offline update package (*.upd)"));
-        return package.isEmpty() ? false : QProcess::startDetached(updaterPath, QStringList{QString("--offline-package=%1").arg(package)});
+        if (package.isEmpty())
+            return false;
+        if (!QFileInfo::exists(updaterPath)) {
+            QMessageBox::critical(nullptr,
+                QCoreApplication::translate("Launcher", "Updater Startup Failed"),
+                QCoreApplication::translate(
+                    "Launcher",
+                    "Cannot import the offline update package because the updater executable does not exist.\nUpdater: %1\nOffline package: %2")
+                    .arg(updaterPath, package));
+            return false;
+        }
+        if (!QProcess::startDetached(updaterPath, QStringList{QString("--offline-package=%1").arg(package)})) {
+            QMessageBox::critical(nullptr,
+                QCoreApplication::translate("Launcher", "Updater Startup Failed"),
+                QCoreApplication::translate(
+                    "Launcher",
+                    "Cannot start the updater for offline package import.\nUpdater: %1\nOffline package: %2\nCheck file permissions and dependent DLLs/shared libraries.")
+                    .arg(updaterPath, package));
+            return false;
+        }
+        return true;
     };
-    const QString deviceId = config.getValue("Update", "device_id");
+    const QString deviceId = config.getValue("Update", "device_id");
     if (QCoreApplication::arguments().contains("--import-offline")) {
         progress.close();
         if (!importOfflinePackage())
@@ -188,21 +208,40 @@ int main(int argc, char* argv[])
         return 0;
     }
 
+    QString mainStartupError;
     const auto startMainApp = [&]() {
         // 只允许 Launcher 启动业务主程序：先生成一次性 ticket，再通过 --ticket-file 传给主程序。
         // 业务主程序必须消费并校验 ticket，避免用户直接双击 SimCAE/MainApp 绕过更新和授权检查。
+        mainStartupError.clear();
+        if (!QFileInfo::exists(mainAppPath)) {
+            mainStartupError = QCoreApplication::translate(
+                "Launcher",
+                "Cannot start the main application because the executable file does not exist.\nExecutable: %1\nCheck main_executable and install_root in the generated client configuration.")
+                .arg(mainAppPath);
+            return false;
+        }
         QString ticketPath;
-        QString ticketError;
-        if (!TicketHelper::createTicket(logic.getAppId(), deviceId, currentVersion,
-                                        launchToken, &ticketPath, &ticketError)) {
-            qDebug() << "Cannot create launch ticket:" << ticketError;
-            return false;
-        }
-        const bool started = QProcess::startDetached(mainAppPath,
-            QStringList{QString("--ticket-file=%1").arg(ticketPath)});
-        if (!started) QFile::remove(ticketPath);
-        return started;
-    };
+        QString ticketError;
+        if (!TicketHelper::createTicket(logic.getAppId(), deviceId, currentVersion,
+                                        launchToken, &ticketPath, &ticketError)) {
+            qDebug() << "Cannot create launch ticket:" << ticketError;
+            mainStartupError = QCoreApplication::translate(
+                "Launcher",
+                "Cannot start the main application because the one-time launch ticket could not be created.\nExecutable: %1\nDetails: %2")
+                .arg(mainAppPath, ticketError);
+            return false;
+        }
+        const bool started = QProcess::startDetached(mainAppPath,
+            QStringList{QString("--ticket-file=%1").arg(ticketPath)});
+        if (!started) {
+            QFile::remove(ticketPath);
+            mainStartupError = QCoreApplication::translate(
+                "Launcher",
+                "Cannot start the main application process.\nExecutable: %1\nTicket file: %2\nCheck file permissions, dependent DLLs/shared libraries, and whether the executable can run independently.")
+                .arg(mainAppPath, ticketPath);
+        }
+        return started;
+    };
 
     progress.setLabelText(QCoreApplication::translate("Launcher", "Verifying local runtime policy..."));
     QApplication::processEvents();
@@ -294,23 +333,38 @@ int main(int argc, char* argv[])
             accepted = QMessageBox::question(nullptr, dialogTitle, prompt,
                 QMessageBox::Yes | QMessageBox::No, QMessageBox::No) == QMessageBox::Yes;
         }
-        if (!accepted) {
+        if (!accepted) {
             if (!startMainApp()) {
                 QMessageBox::critical(nullptr,
                     QCoreApplication::translate("Launcher", "Startup Failed"),
-                    QCoreApplication::translate("Launcher", "Cannot start the main application: %1").arg(mainAppPath));
+                    mainStartupError.isEmpty()
+                        ? QCoreApplication::translate("Launcher", "Cannot start the main application: %1").arg(mainAppPath)
+                        : mainStartupError);
                 return -1;
             }
-            return 0;
-        }
-        const QStringList updaterArgs{appId, channel, latestVer, QString::number(targetVersionId)};
+            return 0;
+        }
+        const QStringList updaterArgs{appId, channel, latestVer, QString::number(targetVersionId)};
+        if (!QFileInfo::exists(updaterPath))
+        {
+            QMessageBox::critical(nullptr,
+                QCoreApplication::translate("Launcher", "Updater Startup Failed"),
+                QCoreApplication::translate(
+                    "Launcher",
+                    "Cannot start the updater because the executable file does not exist.\nExecutable: %1\nCheck updater_executable and install_root in the generated client configuration.")
+                    .arg(updaterPath));
+            return -1;
+        }
         if (!QProcess::startDetached(updaterPath, updaterArgs))
         {
             QMessageBox::critical(nullptr,
                 QCoreApplication::translate("Launcher", "Updater Startup Failed"),
-                QCoreApplication::translate("Launcher", "Cannot start the updater: %1").arg(updaterPath));
+                QCoreApplication::translate(
+                    "Launcher",
+                    "Cannot start the updater process.\nExecutable: %1\nArguments: %2\nCheck file permissions, dependent DLLs/shared libraries, and whether the updater can run independently.")
+                    .arg(updaterPath, updaterArgs.join(QStringLiteral(" "))));
             return -1;
-        }
+        }
         return 0;
     }
 
@@ -357,14 +411,16 @@ int main(int argc, char* argv[])
         ? QCoreApplication::translate("Launcher", "The application is up to date. Starting...")
         : QCoreApplication::translate("Launcher", "Offline mode is active. Starting..."));
     QApplication::processEvents();
-    if (!startMainApp())
-    {
-        progress.close();
+    if (!startMainApp())
+    {
+        progress.close();
         QMessageBox::critical(nullptr,
             QCoreApplication::translate("Launcher", "Startup Failed"),
-            QCoreApplication::translate("Launcher", "Cannot start the main application: %1").arg(mainAppPath));
-        return -1;
-    }
+            mainStartupError.isEmpty()
+                ? QCoreApplication::translate("Launcher", "Cannot start the main application: %1").arg(mainAppPath)
+                : mainStartupError);
+        return -1;
+    }
     progress.close();
     return 0;
 }