[Oracle] Don't report a cancelled card database update as successful (#3470)

Took 3 minutes

oracle/src/main.cpp

@@ -95,5 +95,6 @@ int main(int argc, char *argv[])
         QTimer::singleShot(0, &wizard, [&wizard]() { wizard.runInBackground(); });
     }
 
-    return app.exec();
+    const int execResult = app.exec();
+    return wizard.wasCancelled() ? 1 : execResult;
 }

oracle/src/oraclewizard.cpp

@@ -110,6 +110,18 @@ void OracleWizard::accept()
     QDialog::accept();
 }
 
+void OracleWizard::reject()
+{
+    cancelled = true;
+
+    const auto replies = nam->findChildren<QNetworkReply *>();
+    for (QNetworkReply *reply : replies) {
+        reply->abort();
+    }
+
+    QDialog::reject();
+}
+
 void OracleWizard::enableButtons()
 {
     button(QWizard::NextButton)->setDisabled(false);

oracle/src/oraclewizard.h

@@ -23,6 +23,11 @@ class OracleWizard : public QWizard
 public:
     explicit OracleWizard(QWidget *parent = nullptr);
     void accept() override;
+    void reject() override;
+    bool wasCancelled()
+    {
+        return cancelled;
+    }
     void enableButtons();
     void disableButtons();
     void retranslateUi();
@@ -74,6 +79,7 @@ private:
     QByteArray tokensData;
     QString cardSourceUrl;
     QString cardSourceVersion;
+    bool cancelled = false;
 
     void migrateOracleSettings();
 

oracle/src/pages.cpp

@@ -350,6 +350,10 @@ void LoadSetsPage::actDownloadFinishedSetsFile()
 {
     // check for a reply
     auto *reply = dynamic_cast<QNetworkReply *>(sender());
+    if (wizard()->wasCancelled()) {
+        reply->deleteLater();
+        return;
+    }
     auto errorCode = reply->error();
     if (errorCode != QNetworkReply::NoError) {
         QMessageBox::critical(this, tr("Error"), tr("Network error: %1.").arg(reply->errorString()));

oracle/src/pagetemplates.cpp

@@ -163,6 +163,10 @@ void SimpleDownloadFilePage::actDownloadFinished()
 {
     // check for a reply
     auto *reply = dynamic_cast<QNetworkReply *>(sender());
+    if (wizard()->wasCancelled()) {
+        reply->deleteLater();
+        return;
+    }
     QNetworkReply::NetworkError errorCode = reply->error();
     if (errorCode != QNetworkReply::NoError) {
         QMessageBox::critical(this, tr("Error"), tr("Network error: %1.").arg(reply->errorString()));