[impl] Implement support to preserve last configured port number

[impl] Allow port number to be overriden by command line argument

CCEngine/conanfile.txt

@@ -4,6 +4,7 @@ libcurl/7.61.1@bincrafters/stable
 boost/1.69.0@conan/stable
 cryptopp/7.0.0@bincrafters/stable
 qt/5.12.0@bincrafters/stable
+yaml-cpp/0.6.2@bincrafters/stable
 
 [generators]
 visual_studio

CCEngine/project-common.props

@@ -8,7 +8,7 @@
     <ClCompile>
       <AdditionalIncludeDirectories>$(ProjectDir)..\..\libLicenseClient\api;$(ProjectDir)GeneratedFiles;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>%(AdditionalOptions)</AdditionalOptions>
-      <PreprocessorDefinitions>_SILENCE_CXX17_ALLOCATOR_VOID_DEPRECATION_WARNING;_SILENCE_CXX17_ADAPTOR_TYPEDEFS_DEPRECATION_WARNING;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_SILENCE_CXX17_ALLOCATOR_VOID_DEPRECATION_WARNING;_SILENCE_CXX17_ADAPTOR_TYPEDEFS_DEPRECATION_WARNING;_SILENCE_CXX17_ITERATOR_BASE_CLASS_DEPRECATION_WARNING;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <Link>
       <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>

CCEngine/src/CCEngine.cpp

@@ -3,6 +3,8 @@
 #include "SystemParamsProvider.h"
 #include "SystemParamsDlg.h"
 
+#include <yaml-cpp/yaml.h>
+
 #include <QtWidgets/QMenu>
 #include <QtWidgets/QMessageBox>
 #include <QtGui/QCloseEvent>
@@ -10,12 +12,66 @@
 #include <QtWidgets/QInputDialog>
 #include <QtCore/QTimer>
 
+#include <boost/log/trivial.hpp>
+
 #include <future>
+#include <fstream>
+
+namespace detail
+{
+
+    class CCEngineConfig
+    {
+    public:
+        CCEngineConfig(const boost::filesystem::path& configFilePath)
+            : m_configFilePath(configFilePath)
+        {
+            try
+            {
+                std::ifstream fin(m_configFilePath.native());
+                if (!fin.fail())
+                {
+                    m_yaml = YAML::Load(fin);
+                }
+            }
+            catch (const YAML::ParserException&)
+            {
+                BOOST_LOG_TRIVIAL(warning) << "The yaml configuration file is malformed. Ignoring.";
+            }
+        }
+
+        std::optional<uint16_t> port() const
+        {
+            if (m_yaml["port"])
+            {
+                return m_yaml["port"].as<uint16_t>();
+            }
+            return {};
+        }
+
+        void setPort(uint16_t port)
+        {
+            m_yaml["port"] = port;
+        }
+
+        void save()
+        {
+            std::ofstream fout(m_configFilePath.native());
+            fout << m_yaml;
+        }
+
+    private:
+        boost::filesystem::path m_configFilePath;
+        YAML::Node m_yaml;
+    };
+
+}
 
 CCEngine::CCEngine(
     const boost::filesystem::path& appPath,
     bool justUpdated,
 	bool startBrowser,
+    std::optional<uint16_t> port,
     QWidget *parent)
     : QMainWindow(parent)
     , m_appPath(appPath)
@@ -42,6 +98,20 @@ CCEngine::CCEngine(
     connect(timer, SIGNAL(timeout()), this, SLOT(onLoad()), Qt::ConnectionType::QueuedConnection);
     timer->start(0);
 
+    m_config = std::make_unique<detail::CCEngineConfig>(appPath / "CCEngine.yaml");
+
+    m_port = 8080;
+    if (port)
+    {
+        m_port = port.value();
+    }
+    else if (m_config->port())
+    {
+        m_port = m_config->port().value();
+    }
+
+    ui.txtPort->setText(QString::number(m_port));
+
     // Connect UI
     connect(ui.btnActivate, SIGNAL(clicked(bool)), this, SLOT(onActivate(bool)));
     connect(ui.btnActivationDetail, SIGNAL(clicked(bool)), this, SLOT(onActivationDetail(bool)));
@@ -123,7 +193,13 @@ void CCEngine::onRestartServer(bool)
 {
     if (m_licenseController.isActivated())
     {
-        m_port = ui.txtPort->text().toUShort();
+        uint16_t port = ui.txtPort->text().toUShort();
+        if (port != m_port)
+        {
+            m_port = port;
+            m_config->setPort(port);
+            m_config->save();
+        }
         m_ccServerManager.listen("127.0.0.1", m_port, (boost::filesystem::path(m_appPath) / "data").string(), 4);
     }
 }

CCEngine/src/CCEngine.h

@@ -15,15 +15,23 @@ struct UpdatesInfo
     int updateCount;
 };
 
+namespace detail
+{
+
+    class CCEngineConfig;
+}
+
+
 class CCEngine : public QMainWindow
 {
     Q_OBJECT
 
 public:
-	CCEngine(
-		const boost::filesystem::path& appPath,
-		bool justUpdated,
-		bool startBrowser,
+    CCEngine(
+        const boost::filesystem::path& appPath,
+        bool justUpdated,
+        bool startBrowser,
+        std::optional<uint16_t> port,
         QWidget *parent = Q_NULLPTR);
     virtual ~CCEngine();
 
@@ -72,4 +80,5 @@ private:
     CCServerManager m_ccServerManager;
     uint16_t m_port;
 	bool m_autoStartBrowser;
+    std::unique_ptr<detail::CCEngineConfig> m_config;
 };

CCEngine/src/main.cpp

@@ -58,6 +58,7 @@ int main(int argc, char *argv[])
     bool justUpdated = false;
 	bool minimized = false;
 	bool startBrowser = false;
+    std::optional<uint16_t> port;
     for (int i = 1; i < a.arguments().size(); ++i)
     {
         if (a.arguments().at(i) == "--updated")
@@ -72,9 +73,13 @@ int main(int argc, char *argv[])
 		{
 			startBrowser = true;
 		}
+        if (a.arguments().at(i).startsWith("--port="))
+        {
+            port = a.arguments().at(i).mid(7).toUShort();
+        }
     }
 
-    CCEngine w(appDir, justUpdated, startBrowser);
+    CCEngine w(appDir, justUpdated, startBrowser, port);
 	if (!minimized)
 	{
 		w.show();