Settings: Rescan wallet cache button

src/libwalletqt/WalletManager.cpp

@@ -11,6 +11,7 @@
 #include <QtConcurrent/QtConcurrent>
 #include <QMutex>
 #include <QMutexLocker>
+#include <QString>
 
 WalletManager * WalletManager::m_instance = nullptr;
 
@@ -338,6 +339,24 @@ QString WalletManager::checkUpdates(const QString &software, const QString &subd
   return QString::fromStdString(std::get<1>(result) + "|" + std::get<2>(result) + "|" + std::get<3>(result) + "|" + std::get<4>(result));
 }
 
+bool WalletManager::clearWalletCache(const QString &wallet_path) const
+{
+
+    QString fileName = wallet_path;
+    // Make sure wallet file is not .keys
+    fileName.replace(".keys","");
+    QFile walletCache(fileName);
+    QString suffix = ".old_cache";
+    QString newFileName = fileName + suffix;
+
+    // create unique file name
+    for (int i = 1; QFile::exists(newFileName); i++) {
+       newFileName = QString("%1%2.%3").arg(fileName).arg(suffix).arg(i);
+    }
+
+    return walletCache.rename(newFileName);
+}
+
 WalletManager::WalletManager(QObject *parent) : QObject(parent)
 {
     m_pimpl =  Monero::WalletManagerFactory::getWalletManager();