Add check for new version

mainwindow.cpp

@@ -19,6 +19,9 @@
 #include <QStatusBar>
 #include <QImageReader>
 #include <QMimeDatabase>
+#include <QDesktopServices>
+#include <QJsonDocument>
+#include <QNetworkReply>
 #include "loadrunable.h"
 #include "markedfiles.h"
 #include "about.h"
@@ -254,6 +257,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     helpMenu->addAction(tr("Help"), QKeySequence::HelpContents, [this]{ HelpDialog help(this); help.exec(); });
     helpMenu->addAction(tr("About Tenmon"), [this]{ About about(this); about.exec(); });
     helpMenu->addAction(tr("About Qt"), [this](){ QMessageBox::aboutQt(this); });
+    helpMenu->addAction(tr("Check update"), this, &MainWindow::checkNewVersion);
 
     setupSigterm();
     QSettings settings;
@@ -692,6 +696,42 @@ void MainWindow::exportCSV()
         m_databaseView->exportCSV(file);
 }
 
+void MainWindow::checkNewVersion()
+{
+    QNetworkAccessManager *manager = new QNetworkAccessManager(this);
+    QNetworkRequest request(QUrl("https://gitea.nouspiro.space/api/v1/repos/nou/tenmon/releases/latest"));
+    request.setRawHeader("accept", "application/json");
+    QNetworkReply *reply = manager->get(request);
+    connect(reply, &QNetworkReply::finished, [this, manager, reply](){
+        QJsonParseError error;
+        QJsonDocument json = QJsonDocument::fromJson(reply->readAll(), &error);
+        if(json.isObject() && json.object().contains("tag_name"))
+        {
+            QString tag = json.object().value("tag_name").toString();
+            QString version = getVersion();
+            if(version < tag)
+                QMessageBox::information(this, tr("Update check"), tr("You have newest version"));
+            else
+            {
+                if(QMessageBox::question(this, tr("Update check"), tr("New version %1 is available. Do you want to download it now?").arg(tag)) == QMessageBox::Yes)
+                {
+                    QUrl url(json.object().value("html_url").toString());
+                    qDebug() << url;
+                    if(url.host() == "gitea.nouspiro.space")
+                        QDesktopServices::openUrl(url);
+                }
+            }
+        }
+        else
+        {
+            QMessageBox::warning(this, tr("Update check"), tr("Failed to check version"));
+        }
+
+        reply->deleteLater();
+        manager->deleteLater();
+    });
+}
+
 void MainWindow::updateWindowTitle()
 {
     ImagePtr ptr = m_ringList->currentImage();